Ford P0401 DPFE EGR Pressure Sensor Diagnostics and Repair with a Contest

[@lgninjalo]

Thanks for taking the time to show how to pop that connector off too. 12 years later and your video is still helping people out.

[@GoTechTraining]

Thanks for watching Nih Jack! Mike Becker, Senior Instructor

[@GoTechTraining]

Re-check the DPFE like it shows in the video. The hoses going to the DPFE are special heat resistance type. Be sure you are using the correct hose. If the hoses look like they have gotten hot or the DPFE looks a little melted, it means your catalytic convertor is restricted. Did you clean the tube going to the exhaust pipe? When you do make sure there is flow completely through. There is a small orifice inside the pipe that plugs. Stay in touch, Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

Thank you for the kind words. If you are melting sensors and have a lot of pressure on the hoses, it usually means your catalytic convertor is restricted. I suggest getting the back pressure on the exhaust system tested. I hope this helps and stay in touch, Mark Hicks Wells Vehicle Electronics

[@PIANOSTYLE100]

I'm a semi retired electronic tech. This was very accurate. My wife's 1999 4.6 Liter Ford Expedition has an intermittent more annoying than really worrisome problem. it gets a little rough. it seems to affect shifting..but not always. Auto Zone scanner said it needed to have the DPFE replaced. I am not a parts replacer as such.. I want to know how something works and how it's designed. I now see why the EGR is so necessary.. It is a safety engenering part to prevent damage. I subscribed and rang the bell. I am going to your site.

[@GoTechTraining]

1. Disconnect the shift linkage at the transmission and move the linkage on the transmission by hand. If the transmission still won't engage, there is an internal transmission problem. 2. If the transmission does engage when moving the linkage manually, check for a problem with the shift lever or cable. Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

Check voltage of the Differential Pressure Feedback EGR (DPFE) sensor. Normal voltage should be 0.5-1.2 volts Key On Engine Off (KOEO) or at idle. If voltage is out of range, check voltage again with the sensor disconnected, it should read 5.0 volts. If it does, and there is 5.0 volts measured between the Brown/White (BR/WT) and Grey/Red (GY/RD) wire, replace the sensor. Our largest customers are AutoZone and Carquest. Thanks, Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

The specs for your DPFE should be the same as in the video, 1.0 volts. If the hoses are blowing off and get very hot it means the exhaust system is restricted. This usually means the catalytic convertor is plugged. To be sure have the back pressure on the exhaust checked. Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

It sounds like the catalytic convertor is restricted. Have you had the back pressure in the exhaust checked? One this you can do to do a quick check is remove the front O2 sensor(s). If there is an improvement , most likely the cats are plugged. Don't leave the O2s out for very long. Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

@MsMlarrea 3. Check for a possible backpressure issue which may be damaging the sensor because of exhaust heat melting the sensor internally. To check this, connect a vacuum/pressure gauge to the DPFE sensor tube that connects to the sensors "HI" port. Monitor the reading while brake-torquing the engine. Backpressure should not exceed 2 PSI. 4. If the DPFE sensor connector is ok and there is not excessive exhaust backpressure, replace the DPFE sensor.

[@GoTechTraining]

Is the catalytic convertor(s) partially plugged? Is this why you exhaust leaks? This will cause the P1407. Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

@MsMlarrea 1. Inspect the connection of the Differential Pressure Feedback EGR (DPFE) sensor for good contact to the sensor. 2. Check the Brown/White (BR/W) wire for 5.0 volts to the sensor when the Differential Pressure Feedback EGR (DPFE) sensor signal reading is high, and, that the Grey/Red (GY/R) wire is a good ground. Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

I think you are talking about the DPFE sensor? I think I answered this before? Check voltage of the Differential Pressure Feedback EGR (DPFE) sensor. Normal voltage should be 0.5-1.2 volts Key On Engine Off (KOEO) or at idle. If voltage is out of range, check voltage again with the sensor disconnected, it should read 5.0 volts. If it does, and there is 5.0 volts measured between the Brown/White (BR/WT) and Grey/Red (GY/RD) wire, replace the sensor. Mark Hicks Wells Vehicle Electronics

[@Undertaker331]

thank you, this will really help me, im am currently a student at ohio tech college for their auto-diesel program, and my moms car just put this code on, now i can go fix it today, instead of waiting for monday to take it to school and do it!

[@davidmiller2257]

Thanks Mark you saved me a large repair bill on my 04 Taurus.. The sfi engine.

[@GoTechTraining]

David Miller Excellent! Always happy to hear a successful ending! We are now offering "live" training classes on KZbin you might be interesting in checking out. Here is the info to sign up: Click on this link for more information and to subscribe.www.wellsve.com/webcasts.html Englishes.wellsve.com/webcasts.html EspañolMark Hicks Wells Vehicle Electronics

[@ericthecarguy]

The dancing was the best. The smoke effects were cool too.

[@GoTechTraining]

@Coop772 You are very Welcome, Thanks for watching. Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

@IrnMaiden304 Yes they were aluminum cases. In fact we manufactured and sold the aluminum housing until the foundry stop producing them. Reason? On some application the plastic replacement needed a new wiring harness, we wanted to produce a direct replacement for as long as possible. the reason ford updates was because of RFI problems. We updated the circuitry but stayed with the aluminum housing as long as possible. Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

@Undertaker331 You are very welcome, let me know how it turns out or if you need anything else. Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

3. Disconnect the White hose from the vacuum control valve and plug it, connect a vacuum gauge to the port, and with the engine idling there should be at least 6.7" of vacuum. 4. Disconnect the EGR solenoid and apply power to one terminal and ground to the other, the solenoid should block any flow, remove the voltage and ground and vacuum should flow through the valve. It is common for the EGR solenoid to fail. Let me know please, Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

My pleasure! Please let me and everyone else know what happens. Mark Hicks Wells Vehicle Electronics

[@phillyrey8225]

Question! The egr valve is the only code that came up when I had it tested... Should the engine light turn off immediately or does it have to go through a cycle?

[@GoTechTraining]

+phillyrey Good question! The car will have to go through multiple passed test cycles before it will clear the check engine light on its own. Many people will have the code cleared after a repair, either using a scan tool or by disconnecting their battery. Mike Becker, Technical Services Instructor

[@VersDavid]

+markjhicks what's a passed test cycle?

[@GoTechTraining]

Be sure to check the DPFE like I told you. 9 times out of 10 the P1407 is a defective DPFE. Also closely check the hoses coming up from the exhaust. If the Catalytic Converter is restricted the hoses will deform and crack. Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

If some of the ports are restricted, you will get excessive flow on the other open port(s). This is why I asked for the codes. When this occurs you will also most times get misfire codes. The fact that you opened the EGR at idle and only got rough running and not an engine kill, makes me think there is some restriction somewhere. Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

@svt0304cobra You have to get enough misfires in a certian time period to set a code. It might be right on the edge. When you say you smell rotten eggs, it means either it is running rich or you have a misfire or both. Please clean the MAF. Please do as I am telling you, it will give a good starting point if not the answer. Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

The restricted EGR will not cause the engine to run richer. Too much EGR could cause this to happen. It is time to have the back pressure of the cats checked. Let me know what you find, Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

What code(S) are being set? The PFE sensor should have near one volt on one of the pins with it plugged in. Check it that way by back probing it with a pin. Your engine has small orifices above the intake valve that let the EGR gasses into the cylinder. It is common for these orifices to become blocked. What are the codes? Mark Hicks Wells Vehicle Electronics

[@Coop772]

Great tutorial! Thanks for the upload!

[@GoTechTraining]

@svt0304cobra Fist check and clean the MAF sensor. If that does not take care of the problem, I would like to have you put it onto a scan tool. Check the misfire counts. If one or two are particularly high swap the coils on those cylinders and see if the misfire follows the coils. Let me know what you find, Mark Hicks Wells Vehicle Electronics

[@cmccarter2009]

Very informative video!! I have an 01 explorer 4.0 V6 and i had issues with P0401. Replaced the EGR valve, DPFE sensor, cleaned all the vacuum lines to/from EGR system and, intake gaskets. And the problem went away for about 3mos (just to pass state emmissions test) and came back the same. Any ideas? I have noticed a major drop in mileage even after using lucas fuel treatment on every oil change...

[@GoTechTraining]

The signal voltage should be between .8 and 1.2 volts. Sounds like you have a defective sensor. Mark Hicks Wells Vehicle Electronics

[@mariannicolae5778]

Hello Mark! I have a skoda octavia an 2012, engine 2.0 tdi and i have the error P0401, insufficient flow, if i wipe the car pulls well, and after a running time gives a bug and does not pull the engine well.What can I check? Thank you!

[@GoTechTraining]

Hey Marian, chances are when the P0401 code sets it puts the car in some sort of "limp mode" That's probably why it doesn't run well when the code is set. Take a look at the passages for the EGR valve. Maybe they are plugged up with carbon? Mike Becker, Senior Technical Instructor

[@mariannicolae5778]

@@GoTechTraining Thanks a lot!

[@shhallsa]

Great video. I have 96 Continental. When back probing as shown in video, I get 0 readings but car beeps then turns on cooling fan. I'm getting 0 readings when probing other ports as well.

[@GoTechTraining]

Hey Scott, do you have your meter hooked up properly? You should get some sort of reading on at least one of the wires. Mike Becker, Senior Technical Instructor

[@shhallsa]

Tried different probe today and got readings of 1.19 at signal wire and 5 volts on other. Think I might have a problem with the device that controls vacuum for the "second" egr valve. Need to find out how to test it. Hard to access.

[@GoTechTraining]

Hey Scott, good, glad you were able to get a reading! You're talking about the EVR? The EGR vacuum regulator solenoid? Mike Becker, Senior Technical Instructor

[@shhallsa]

What I might be calling a "second" egr valve is actually this part in the second pic: www.fordonlyparts.com/1995-1997-lincoln-continental-4-6-dohc-fwd-egr-smog-vacuum-diverter-valve-solenoid-bracket-f57f-9j459-ca-f50e-9f491-aa-f50e-9g426-aa/ The vacuum line that goes to it, originates from a small "sensor" that has two vacuum lines, and is located on engine below coil packs, I want to test it somehow.

[@GoTechTraining]

Scott, how many wires are going to this part that you want to test? I think you're talking about that vacuum control solenoid. It will have only 2 wires going to it. Mike Becker, Senior Technical Instructor

[@cmccarter2009]

thanks for the reply mark!! i checked the DPFE and im getting 1.18-1.22V on it. the EVR shows good resistance and voltage. i ran a stiff copper wire and carb cleaner through the tube that comes from the exh manifold to the EGR vavle to make sure it is clear. i also took out the O2 sensor before the cat and it is almost white. is this a result of overheating cats due to running it richer because of the low egr flow??

[@jp48506]

Haha! I love it when the commentator adds a little humor into it! @3:47. Great video illustration. Keep up the good work!

[@GoTechTraining]

Thanks John! Mike Becker, Technical Services Instructor

[@larryyoung500]

I've been searching on the internet to see what part is what. I don't know what the EGR solenoid or the vacuum control valve looks like on a 2002 Mitsubishi Montero Sport. I looked at 2 different websites and their picture for the VCV were different. I will run the tests once I confirm the those parts from you.

[@GoTechTraining]

What does it read when it is connected to the sensor? What vehicle and engine size and code do you have? It could be normal. Mark Hicks Wells Vehicle Electronics

[@sternbro]

Does the voltage reading you give hold true for a 1999 5.4?

[@GoTechTraining]

Michael, I believe so. Most of the DPFE sensors on Fords used the same readings. Mike Becker, Senior Technical Instructor

[@GoTechTraining]

@DMasterMensionz It may be an early version, but either way we would greatly appreciate getting it back for an analysis. Give us a call on our tech and we will make arrangements to send you a new one and a call tag for you to send the defective one back. This will all be at no cost to you. Our toll free number is 1-800-558-9770 press 3 for the tech department and explain the situation and one of my guys will make the arrangements. Thank you, Mark Hicks Wells Vehicle Electronics

[@aksfilmsusa]

Hi Mark. I have 93 Ranger 3.0L V6 Auto Transmission. I am getting check engine code 332. Insufficient EGR flow detected . I tested the DPFE sensor. First reading was 0.845v and the other reads 5v. Does this reading suggest the DPFE sensor is bad? Please help. Thx

[@GoTechTraining]

Check the voltage of the Pressure Feedback Exhaust Gas Recirculation (PFE) sensor. The voltage should indicate a reading of 3.2-3.3 volts on the Brown/Light Green (BN/LG) wire of the sensor connection. If the voltage is not within the specified range, verify that the Brown/White (BN/WH) wire of the sensor is showing to be a 5.0 volt reference and that the Grey/Red (GY/RD) wire is showing to be a good ground when the sensor is connected. If the VREF signal and ground check to be ok even though the PFE sensor voltage is out of range, it would suggest that either the PFE sensor is defective or it has a connection issue to the wiring harness. From your test results, if properly performed, yes it appears the sensor is defective. Try lifting the EGR valve while the engine is running (idling). The engine should die when you do this, it will prove the passages are open. If the RPM does not change (drop) the passages are restricted. Mark Hicks Wells Vehicle Electronics

[@aksfilmsusa]

markjhicks I checked the voltages as advised. I still get the same reading. The voltage reading that you mention of 3.2 to 3.3v is where I am getting 0.845v? This voltage of mine should be 3.2v correct? The EGR valve is new on the truck. I checked my ground wire to battery terminals and to chasse. Connection is good. The pressure coming from the Exhaust on both the lines are good when I put my finger on it. Waiting for your reply. Thx

[@GoTechTraining]

***** Yes voltage should be near 3.2v. When I told you to open the EGR, it is to test the passage ways in the intake. You do not know if they are open until you test it like I said previously. Mark

[@GoTechTraining]

@svt0304cobra If the service light flashed or came "on". you should have a stored or a pending code. Let me know what you find. Mark Hicks Wells Vehicle Electronics

[@Caveman-k9h]

Great video, I have a 2000 Ford Tuarus with the same problem. I replaced the Egr back pressure sensor cause the old was melted do to the heat from the tubes. I having a problem keeping the sensor on the tubes. It seems there is enough pressure coming out of the tubes to push the heat resistant tubes plus the sensor off. What should I do?

[@dereksturdavant8842]

Thanks!! P0402 code for excessive flow had the same fix on my 2002 ford explorer. DPFE read 3.5 volts instead of .8 to 1.2. $32 dollar 20 minute fix in the parking lot of auto-zone.

[@GoTechTraining]

+Derek Sturdavant Good to hear! Glad we could help. Mike Becker, Technical Services Instructor

[@jbddesouza5147]

Hi Does a 4.0 litre v6 Ford Explorer year 2005 also have a DPFE sensor

[@GoTechTraining]

Hi jbd desouze, your Explorer does not have a separate DPFE. It is built in with the EGR assembly and not replaceable separately. Mike Becker, Technical Services Instructor

[@jbddesouza5147]

Thank you very much Mike

[@GoTechTraining]

Well not good news, but at least you know for sure what it is. Thanks for letting us all know! Till next time, take care, Mark Hicks Wells Vehicle Electronics

[@GoTechTraining]

Great news! To make sure the speed sensor is good, connect your meter and drive the vehicle, the sensor should generate an AC voltage that increases with speed. Sorry no video yet ... Mark Hicks Wells Vehicle Electronics

[@rhounico]

ok thanks Mark! Mmm do you know what typical voltage should be? The wires can be the problem too, what do you suggest? Thanks

[@cmccarter2009]

Im leaning on replacing the EGR solenoid. The 2 hoses that lead to the DPFE sensor are NOT being blown off the tube or sensor and the DPFE is not being melted. Im just trying to get ideas as to what i need to do next...

[@rhounico]

Thanks Mark When it is connected the rading is 3.4 volts. Is a 99 ford escort, 2.0, the code p0401.

[@larryyoung500]

Mark, I hooked the vacuum pump up to the EGR and with the engine revved it stayed at zero. When I increased the vacuum to 8.7 the engine did run rough. I disconnected the hose from the vacuum control valve and put on the vacuum pump and with the engine idling it read 6.5. With the EGR solenoid disconnected I'm not sure how to apply power to that solenoid. Please give me instructions on that.

[@albertofierro664]

Any difference between the egr pressure sensor 4.6 and 5.4 2001 Ford f150 other then the shape? Do they Work same or is any difference?

[@timothymaestas7526]

Where does the hoses goes on a 2002 Ford explorer Eddie Bauer edition are located

[@dmont40]

my dfpe code is 327 on my 94 VIC . did it change for ODB II?

[@GoTechTraining]

Most of the old codes were 2 or 3 digits. When they went to OBD2 many codes changed. Did you need help diagnosing your DPFE?

[@dmont40]

+Wells Vehicle Electronics well I had a friend give me a new DPFE for free so I never confirmed with certainty it was the issue. But after replacing the CEL comes on as car starts but goes away with gas applied and back on when gas is released. Very few tools and equipment.

[@GoTechTraining]

1. Disconnect the green striped hose from the Exhaust Gas Recirculation (EGR) valve with the engine warmed up and running. Rev the engine, the vacuum should increase to at least 3.9". 2. With a hand vacuum pump connected to the EGR, increase the vacuum to 8.7", the engine should stall or at least run real rough.

[@rhounico]

I replaced the sensor, it solves the problem! I also cleaned up the egr valve. Thanks Mark This car has another problem is P0715 it seems to be a problem in many cars, do you have a video about this problem? I´m almost sure than the sensor is good (is a magnetic type, the reading from the coil is 450 ohms and it produce voltage) but i want to be sure! Thanks again!

[@jayfox3965]

I can’t seem to find the dpfe sensor on an 89 f350/460 cid.

[@GoTechTraining]

Hello Jay, I don't believe the 89 7.5L runs a DPFE sensor. This system used a EVP sensor mounted on top of the EGR valve. Ryan Wilsing, Technical Instructor

[@larryyoung500]

I have a 2002 Mitsubishi Montero Sport 3.5L and I have the P401 code. I already replaced the EGR valve and took off the manifold and cleaned all the ports. P401 still showing up. I bought a vacuum pump and tested the MAP sensor and with the key to on it read 5 v. I had the red lead on the green wire and black wire to ground. I squeezed the hand pump and went to 5,10, 15 units and voltage still 5 v. I assumed it was bad so I bought a new one. I tested the new one with same results.

[@jancarloespinoza3353]

So all of the wires probed on the dpfe sensor all need to be within the same dcv? I probed the first one and it came as .962 dcv, the second wire was at 26.9 dcv and the third wire was at 5.01dvc all of this was done with the key on the on position. Engine off

[@GoTechTraining]

Hey Jancarlo, you are ready 26.9 volts on one wire? That is crazy high! Is this maybe a typo? What kind of vehicle are you working on? Mike Becker, Technical Services Instructor

[@GoTechTraining]

Just meant to get your attention to go to our website. Did you go? Mark Hicks Wells Vehicle Electronics

[@angellizarraga4170]

thanks for the video, will you please to guide me how to chek EGR valve module in my 2006 ford freestar please_ I got P0406 code and my check engine light is on, mtor es 4.2l V6. Thks

[@GoTechTraining]

Hey Angel, The EGR module on those is a complete unit with a map sensor/ flow sensor installed. To test check the DPFEGR output signal from being stuck over 4.5 volts. If it is, the code P0406 code will set. ~Ryan

[@angellizarraga4170]

@@GoTechTraining you aré right, i got 5.06volts in the dpfe sensor, whats Is the spec?

[@GoTechTraining]

It will range depending where the EGR flow is at. Here is a testing procedure.... SIMULATE THE DIFFERENTIAL PRESSURE FEEDBACK EGR SENSOR SIGNAL WITH A VACUUM PUMP Disconnect the downstream differential pressure feedback EGR sensor port hose at the ESM. Verify the hose and port are clear and free of obstructions. Connect a vacuum pump to the downstream differential pressure feedback EGR sensor port. Key ON, engine OFF. Access the PCM and monitor the DPFEGR PID. Apply 27 - 30 kPa (8 - 9 in-Hg) vacuum to the differential pressure feedback EGR sensor and hold for 10 seconds. Quickly release the vacuum. The DPFEGR PID voltage must be between 0.25 and 1.3 volts with the key ON and no vacuum applied. The DPFEGR PID voltage must increase to greater than 4 volts with the vacuum applied. The DPFEGR PID must drop to less than 1.5 volts in less than 3 seconds when the vacuum is released. ~Ryan

[@adadelgado9078]

Please help , I just made the test with a Voltmeter and both readings from both terminals shows 4.9 Volts , When I was expect to have one in 4.9 V and the other Should read less than 1.2

[@adadelgado9078]

For me it represents that the DPFE sensor is in short circuit .

[@GoTechTraining]

It does sound like the DPFE is shorted. Verify that the voltage is gone when you unplug the connector. That will ensure the circuit isn't shorted to power before the DPFE. Mike Becker, Technical Services Instructor

[@adadelgado9078]

You were totally Right !! I just replace the sensor , make the reading again and I got 1.02 Volts on the input signal , , I just disconnect the battery since I don't have a scanner and the Check Engine Signal went away , I can feel the change right Away !! Thank so much MIke !!! I just spend in Autozone $ 20 dollars for the replacement sensor!! Att Happy Man!

[@GoTechTraining]

@artfd Thanks for the information and kind words. Take Care, Mark Hicks Wells Vehicle Electronics

[@UpcomingJedi]

How do you go about checking the sensor without that expensive special scanner?

[@MisterSoulman82]

What is the problem for my Ford Explorer sports Trac the check engine always come out and takes a lot of fuel 27liter per 100kms with in the City.but long distance it takes 20 Liter per 100kms .thanks this video

[@GoTechTraining]

Have you taken a look at the easy stuff? Hows the maintenance items, air filter, spark plugs, fuel filter, etc? Mike Becker, Senior Instructor

[@GoTechTraining]

@svt0304cobra If it is effecting all cylinders, it is very possible to be a crank sensor or a fuel delivery problem. Mark Hicks Wells Vehicle Electronics

[@juanhinojosa9784]

How do I connect my voltmeter to check the volts..... in the video I only see one lead connecting to the pin

[@GoTechTraining]

Juan, you could hook the other lead up to the battery. The volt meter will read a difference between the pins...so If you are checking for power, you can put the black lead on battery negative, and the opposite for checking the ground circuit. Now there is way more in depth testing if you want to get into it...this is a very basic first test. Mike Becker, Technical Services Instructor

[@stopmonkey47452]

I have an 02 focus with a dpfe that mounts to my engine wall. It has the same wire harness as the one in the video. The dpfe died so I bought a new one and went to put it in. The new one has a different wire harness. According to auto zone the new ones need a new harness because ford redesigned. I'm buying the new one soon but wondered if you have heard of the new dpfes needing new harnesses. Also what order should I attach the leads? Thanks

[@GoTechTraining]

Hello Andrew, Yes I have heard of this. In fact you are purchasing one of our sensors. It was an Original Equipment OE change to the wiring harness. You will probably see the wires to the replacement harness are all one color. This is because it fits several different models and years and each of them have wiring with different colors. First cut the connector from the vehicle about an inch from the connector it self. Then lay the connectors side by side and match up the wires. You will then see which wire goes to which colored wire on the vehicle. I hope this helps, if you need further assistance let me know or give us a call at Wells. 1-800-558-9770 7AM to 7PM M-F Mark Hicks Wells Vehicle Electronics

[@stopmonkey47452]

Thanks. I was thinking that would work but wondered if the other dpfe was wired in another order and didn't want to fry it.

[@GoTechTraining]

Andrew Ratiani Makes sense, it can very blurry sometimes. Always best to make sure! Stay in Touch, Mark Hicks Wells Vehicle Electronics

[@rhounico]

Hi! it is normal to have 5volts in the signal wire? That reading is with the soket unplug and the key on, engine off. Thanks!

[@larryyoung500]

On 2 occasions while testing the solenoid relay was clicking like crazy. Not sure if that means anything or has any control over the map sensor?

[@liceriotemporal4762]

hi mark i have 2002 ford escape what happen is that if i start the car theres a whisltling sound and if i run the car i cant go up to 2000 rpm it looks like it chokes and the whistling sound will turn on again every time i go up to 2000 rpm .i clean the fuel injectors , replace all seals for the maniflod clean the egr valve , clean the MAS check hoses. the egr vavle looks good coz if i pinch it under the engine will stall , is it my DPFE or My egr vaccum solenoid?

[@michaelantoniadis1]

Can you do this same thing for a 1995 FORD CROWN VICTORIA

[@GoTechTraining]

I believe your vehicle has a PFE sensor. I do have a video on this subject. kzbin.info/www/bejne/pWmpg6qwnLSUbLs this is the link. Mark Hicks Wells Vehicle Electronics

[@Tom-wq2mz]

Hello. I bought a 2003 Ford Taurus SES 3.0 24 value dohc. The egr pressure sensor is cracked an right hose gone. I found it today looking for a vacuum leak because car runs rough. What problems would or will this cause. I'm not driving the car till I fix it. Great car low miles family one owner vehicle. Thank you for your time.

[@GoTechTraining]

Without a functioning DPFE, the car will have a check engine light and will not pass emissions. These usually are a pretty easy fix. If the hoses are damaged or worn I would suggest replacing them as well. Mike Becker, Technical Services Instructor

[@salahmohamed8697]

Greetings, does this match the 2007 model?

[@rhounico]

MMM, no sorry i was refering about the other sensor (code error P0715, magnetic type sensor, if you could tell me, what would be the tipical voltage generated and, how to test the harness wires, to check if one or both are cut or have some other error). Thanks Mark!

[@AndromedasTears]

I have a 92 ford taurus that has a problem with the transmission engaging. Periodlically when I drive it, then turn it off, then turn it back on again, it won't engage in reverse or drive even though the gear shift is moving the gears (It will move when pushed, in neutral). As well, sometimes when I am hainvg this problem, if I shift it into reverse first, back up then shift into drive it will move. ANY idea what is causing this??

[@mitzismith1452]

Can i run my car till ii gey the egr sensor put on?

[@wcferguson7925]

my problem is finding dpfe sensor its unpluged ie no circut 87 f150 inline 6

[@Tbabydadon]

If this is off will it cost car not to crank

[@GoTechTraining]

Hey Tbaby Dadon, no, you could have this unplugged and the car should still start and run. Mike Becker, Senior Instructor

[@GoTechTraining]

Same issue, Cat is restricted. Usually caused by either the engine is running rich or a misfire. If you need any further assistance, let me know, Mark Hicks Wells Vehicle Electronics

[@BigGroovyOg]

I just recently change my sensor. Last night I cut the car on and hear a loud pop. Turned it off as soon as it happen. Anyone know what it could be?

[@TheHabibalby]

Thank you for pen pointing the exact issue.

[@mattthomas1369]

Sweet green screen usage! Better than the weatherman :)

[@MegaCesar77]

Ford Explorer 2004 where is ir The pressure feedback exhaust sensor : erg valve , thanks

[@brianmcevoy6734]

my 2001 windstar has ap1401 error code and catalystnot reading plus evaporator system not reading is code p1401 the egr sensor ? and whats not ready mean?

[@GoTechTraining]

Most common cause for this code on your vehicle is the DPFE sensor. Spec is 0.4 V to 0.65 V for the original metal type sensor and 0.4 V to 1.2 V for the Black plastic sensor. If out of range, replace the sensor. Mark Hicks Wells Vehicle Electronics

[@almightygoldensouljas4981]

yes th light is on for check engine n no It's not full we always put water only sometimes we use coolant and Idk where the temp switches are

[@GoTechTraining]

Sounds like you have a cooling system problem. I hope it's not cold where you live. Too much water and not enough coolant will lead a cracked block if it freezes. Address your coolant leak/or burning first. Then worry about your cooling fans. Mike Becker, Technical Services Instructor

[@almightygoldensouljas4981]

n I've checked the relays and the fan a friend said to run wiring from fan to the fuse boxes to stop from overheating jus for now he has a Shop here

[@bruceweigman2798]

Great video. Thank you.

[@GoTechTraining]

+Bruce Weigman Thanks Bruce, glad you liked it. Mike Becker, Technical Services Instructor

[@rhounico]

yes, as soon i can get a new sensor, maybe in a couple of weeks!

[@darrylsmith8710]

i have 2000 ford taurus an that sensor keeps burning off what is my problem is it the egr valve

[@GoTechTraining]

+Darryl Smith Hi Darryl, It could be an egr problem, it could also be a partially plugged up catalytic converter causing your problem. Mike Becker, Technical Services Instructor

[@darrylsmith8710]

how can i fix this partially plugged up catalytic converter an are there 3 of them on this taurus went to auto zone engine light on they say its 3 of them converter

[@jenniferheintz3780]

I was getting P0420 code on my 03 vulcan. The EGR stuck open and melted a hole in the plastic intake plenum. The back cat by the firewall had melted down and plugged up, causing back pressure in the exhaust to force the EGR open all the time until the hot exhaust gasses melted through. I had excessive oil consumption (burning oil) and a failing fuel pump that was causing misfires. I had to drop the tank to replace the fuel pump and I put on new valve seals. If you do indeed have a bad cat, there's always a reason behind why it went bad. Simply replacing the Y pipe and cats will mean a repeat of the same situation in a few weeks. Timing, internal oil leaks(valves, or valve seals), misfires(coil, wires, spark plugs) all have to be rectified. Again, just to be clear, misfires, oil blowby, and heat are all cat killers! You're already at a disadvantage becase 2 of the 3 cats are in the engine bay where heat buildup is much worse. One of those 2 is the likely culprit because of oil, or unburnt hydrocarbons is hitting them first. When you're having these kind of symptoms, it can get expensive to get your car all straightened out.

[@jenniferheintz3780]

One more thing. A muffler shop will use the following method: drill a small hole before and after the suspected bad cat and measure the difference in pressure with the vehicle running. If it's plugged, the hole after the cat would have a lot less pressure coming out of it.

[@AlamoCityPatriot]

I had mine replace and i just got the same code and cel again

[@GoTechTraining]

Hey Southern Texan, maybe you have a wiring issue? Mike Becker, Senior Technical Services Instructor

[@AlamoCityPatriot]

Wells Vehicle Electronics ok ill double check and see if theres a loose wire

[@GoTechTraining]

Good luck!

[@davepotts2897]

hi mark, i need help on my 91 town car 4.6 liter. i got code 332 egr valve opening detected. the shop man checked my egr valve says okay.sometime engine stop after cold start or idle and sometime surge when at cruising speeds or not idle at all. right now i dnt know what to do. the car sitting front drive way. can you please help me. thank you!.

[@GoTechTraining]

Hello Dave, below is the test procedure. It is usually due to clogged passages. 1. Check the Pressure Feedback EGR (PFE) sensor voltage, Key On, Engine Off (KOEO). Voltage should indicate 3.2-3.35 volts. 2. Start the engine and recheck the sensor voltage. It should still indicate 3.2-3.35 volts. 3. Open the EGR valve with a hand-held vacuum pump when the engine is idling. With about 8-10" of vacuum applied, the sensor voltage should decrease to less than 1.0 volt. 4. If there is very little change in the engine RPM and the sensor voltage, remove the intake plenum from the lower intake. Inspect and clean the passages of the lower intake which allow for exhaust to flow into the intake from the Exhaust Gas Recirculation (EGR) valve. 5. If the engine runs very rough but the voltage does not change, verify that the pressure hose of the sensor is connected to the exhaust flow pipe feeding the EGR valve and replace the sensor. 6. If the PFE sensor voltage decreases as stated and the engine RPM is severely affected, perform the Key On, Engine Running (KOER) self-test while monitoring the vacuum signal to the EGR valve. At some point during the self-test there should be at least 2" of vacuum to the valve. 7. If there is never a vacuum signal to the valve, backprobe the Brown/Pink (BR/PK) wire at the EGR Vacuum Regulator (EVR) solenoid and ground it with the engine idling to verify vacuum is then present to the valve. 8. If there is no vacuum to the valve, verify manifold vacuum to the EVR solenoid and that the green vacuum line is not restricted or broken from the solenoid to the valve. 9. If the vacuum lines check to be OK, replace the solenoid. Mark Hicks Wells Vehicle Electronics

[@davepotts2897]

okay, will do that.thanks!

[@almightygoldensouljas4981]

95 mustang radiator fan only turns on with defrost??

[@GoTechTraining]

Hey Tony, Do you have a check engine light on? How is your cooling system, is it full of coolant? It could possibly be the temp switch for the fans. What have you checked so far? Mike Becker, Technical Services Instructor

[@MrUnderEstimated]

our left side of dpfe sensor tube connection got blown and after inspecting right after there is a lot of heat and gas, do you know what caused it?

[@GoTechTraining]

Hey John, many times this is caused by restricted exhaust. Especially if you are noticing the hoses melting. These are special high heat hoses, don't just use standard rubber when replacing. Mike Becker, Technical Services Instructor

[@GoTechTraining]

@jdubb408 Go to our website and submit your answer to win. Just click on the link in the description. Good Luck. Mark Hicks Wells Vehicle Electronics

[@CadillacMan2000]

my sensor is stuck any suggestions on how to get it off

[@GoTechTraining]

The hoses are stuck onto the sensor? If they are melted at all you should replace the hoses with replacement ones. These are not just standard rubber hose. Also if the hoses are melted there could be issues in the exhaust system. If they are simply just stuck on there, a hose removal pliers can help. I have run into vehicles where I had to cut the hoses to get the part off. Hopefully you are able to get yours apart. Let me know how this goes. Mike Becker, Technical Services Instructor

[@Tom-wq2mz]

What type of exhaust problem could their be if melted. ?

[@GoTechTraining]

Commonly when the hoses are melted it is caused by excessive exhaust back-pressure. Most of the time that is due to a plugged up catalytic convertor, or a plugged up muffler. Mike Becker, Technical Services Instructor

[@Tom-wq2mz]

Wells Vehicle Electronics Thank you. That's what I had in mind.

[@edwardedwards4090]

I have a 93vp,3.8ecotec,dies out after w@rmed up. The motor light comes back on after start/idling. plse reply,as i am a mech with a tumour in me rightside of neck nd arm. thanking you, Ed

[@GoTechTraining]

Hey Ed, I am going to guess your Commodore VP is the same as our GM products in the states. In that case two common causes come to mind. One crankshaft position sensor. Should be close the the harmonic balancer. Two is the computer. Start the engine and let it get warm. With the engine running, tap on the crankshaft sensor and the computer. Be careful tapping on the crankshaft sensor. You will need a long extension to do it. Do not let the extension touch the belt or pulley. Mark Hicks Wells Vehicle Electronics

[@edwardedwards4090]

Chur bro, U the man for the knowledge alright, will do asap, Thanking you Mr markjhicks.. will get back to you on progress. thankz, Ed

[@edwardedwards4090]

Can't send a vid-pics of motor running.. How 2 do this????

[@GoTechTraining]

Edward Edwards Sorry i don't have anything. Mark

[@edwardedwards4090]

Algud bro, thank you, Ed

[@lincolnbrown4031]

I have A GM 3.4L V6 2000 Oldsmobile Silhouette with California Emissions with error code P0412 at start up only and once cleared only reappears at startup after 20 to 40 seconds. normal scan results except downstream or 2nd O2 Sensor runaway.

[@GoTechTraining]

A p0412 is related to the secondary air injection system. Simply put, you car uses an air pump, that on cold starts forces air into the catalytic convertor to allow the cat's to warm up faster. This code is showing that the system has a failure in it. Could be a bad air pump, or a bad solenoid or something of the sort. Mike Becker, Technical Services Instructor

[@lincolnbrown4031]

Great Video, Thanks.

[@GoTechTraining]

Thanks Lincoln Brown. Glad you liked it! Mike Becker, Technical Services Instructor

[@phillyrey8225]

$30 bucks at auto zone for a 2001 Ford focus.. easy install! Thanks for the info!!!

[@GoTechTraining]

+phillyrey You're welcome Phillyrey. Glad you were able to get it fixed! Mike Becker, Technical Services Instructor

[@GoTechTraining]

Only way to be sure is to get the back pressure checked. Mark Hicks Wells Vehicle Electronics

[@gtrkhan3678]

isuzu vehicle having turbo whistling noise how correct it v cross