HOW TO TEST AN OIL PRESSURE SWITCH. Everything You Need To Know.

[@francoisbadenhorst5791]

Thank you what should the ohms be for the other sensor unit

[@jlt7438]

Thanks for taking the time to help us with this diagnostic... One question that I can't get past is durability of these sensors. I have had Toyotas, Hondas, ford f150 and many more vehicles with more than 150,000 miles with no failure ever of the oil sensor. I have a jeep wrangler that failed after 19,000 miles and this is a common problem for other low mileage FCA vehicles. These sensors seem to be pretty bullet proof except new FCA vehicles. What can possibly make FCA sensors so weak????

[@PistonShack]

Hi JL T, FCT aka Fuel control actuators is electronically controlled solenoid valve controlled by ECM. Valve regulates entering fuel pressure at the high pressure side of the pump. I don't know much about them but solenoids intend to fail way more often than super simple old school membrane oil pressure switches. Plus it could be the manufacture poor design or low quality components used for the solenoid, like wire coils, seal, actuators ect. I don't know if it helped you much. Thanks for watching and subscribing to our channel. Cheers)

[@DericCribbs]

@@PistonShack ,by FCA he was refering to fiat chrysler products

[@feellucky271]

@@DericCribbs Ironically Bosch calls Fuel Control Actuators FCAs and yeah Jeep is made by Fiat Chrysler Automobiles. Wacky world

[@adranyainickson2180]

Thanks so much for the lesson. however, I would like to know to configure the control panel of DSE so as to use either NO or NC Oil sensor/switches.

[@chrisrestifo7010]

Just what I was looking for. Appreciate the knowledge, thanks!

[@PistonShack]

Glad it was helpful Chris!

[@TheAbrunqaj]

Thank a lot for the info. What do people mean when they say ground you oil pressure switch ? Is that just to test the sensor it self ? I have a 1.9 TDI Jetta 03. My engine was rebuilt and now it's throwing the oil warning. It only does it like 10-15 minutes after fully warmed up and smokes a bit more at that time and not while warming up.

[@PistonShack]

Hey Argjent! Ground the switch, means Turn it ON or OFF, depends from the circuit design. I would check actual oil pressure then test the sensor. Seems like you have poorly rebuild engine, main bearings gaps out of specs probably but check oil pressure at idle and 1500-2500 rpm. Cheers!

[@frankmontez6853]

Mine is 2016 Ford Focus SE 2.0 L flex fuel duratech engine. It has no oil pressure gauge so what do you think it does actually? I broke wire going into terminal that connects to it. Seems I need to buy new terminal and splice it into old broken wire?

[@keithrpenny6484]

Brilliant and very informative! good work! Thanks

[@PistonShack]

Thanks Keith! Glad it was helpful)

[@peterswartz9768]

Hi must the sensor be open

[@gustavette8487]

Nice video... Hi, how do you know if your car has one with the normally one or the normally closed, so as to check it?

[@PistonShack]

Check for continuity when pressure is not applied. If you have continuity it means switch is Normally Closed Design. Thanks for subscribing.

[@gustavette8487]

@@PistonShack Thanks!

[@irineodeleon6758]

How about the orps ( pressure sensor on isuzu 4jx1 engine that was the common problem of trooper owner. The mechanic just said we have to replace the orps sensor he does not even check if that's the real problem . Please can you show in your vlog how to test it . Thank you !

[@feellucky271]

I have Merc Grand Marquis. Does the unit normally read open or closed? Thanks much

[@PistonShack]

Hi Gator! Ford oil switch should be normally closed type. But you can easily check it out. Unplug the connector from the sensor. Set multi-meter to Omhs. Place positive probe to the connector negative against the switch body. With engine off, switch contacts should be closed, multi-miter should read "zero"

[@feellucky271]

@@PistonShack Driving home looked and saw oil light was on in my 01 Merc Grand Marquis and starting to rattle under passenger side valve cover. Sat a couple weeks and woke up one night to feel the need to change oil sensor,It read open w no resistance as did the new one but after R and Ring it w a little oil leaking out,I put the old one back in til I could get a new one.Started the car and light stayed out for a couple minutes and came back on. I got the new one and after R and Ring it the light stayed out again a couple minutes but then back on. So I Seafoamed the interior of motor ,flushing it as the oil hadn't been changed in forever.Now the oil light stays off the most part but I need to wait til I get more mone for cab to buy another filter and oil. The wife is sick(lung cancer) she don't even smoke but shes 3 years past her expire date. Any who,been a great car w ice cold air and we're on retirement disability (I lost my legs in '93 in Bosnia)and buying a new one or good used car is out of the question. Any other Idea you have would be appreciated but this is like an engine flush I guess but instead of Marvel Mystery I used Seafoam ,it was on sale and thought I'd try it.Be about $25 for more oil and filter.I don't like Fram as I heard they come apart. Thanks

[@jwol11741]

I need to check the wires off the harness. Any info on this?

[@عبدالرحمنالحربي-ل4غ]

I took advantage of this video a lot ... Wonderful ... Thank you very much

[@PistonShack]

You are most welcome! Thanks for your feedback.

[@articolo3482]

can you please share me all the testing parameters for oil pressure sw. for new development product...

[@PistonShack]

Hi Articolo! What specific parameters are you interesting. Can you list them down below, thanks.

[@davib7534]

Great video, thx! Can you tell me if a pressure oil sensor like this can be used with a oil pressure gauge instead of just a red light in the dash?

[@PistonShack]

Hi Davib. Yes, absolutely! You can buy aftermarket oil pressure gauge kit and install on your vehicle using with you factory oil alert indicator. You need to connect the signal wire to the sending unit and to the gauge itself in basic words explained. What vehicle do you have, bzw? Let me know how everything is going! Cheers)

[@flinch622]

No. These are open or closed switches in this video, and there is no linear output to drive a gauge [or computer input] with. A proper sending unit may be two or three wire, not one. Two wire is generally not seen in automotive, but marine - as a 4-20mA signal for engine monitoring. In the case of this switch being tested, I would plumb to a regulated air line to see what the actual pressure switching point is - an "idiot" light design may be anywhere from 4 to 15 psi on proper setpoint, depending on vehicle and contact opens on rising pressure to remove return path for the indicator light. Conversely, a safety shutdown [usually tied into a relay somewhere] is going to open on falling pressure [15psi is a pretty good generic number, but will vary between engines - some need higher setpoints, some can get away with lower]. I am not a fan of 4psi designs - I want an indicator on at a bare minimum of 10psi. 4psi usually means my engine has already died and is spinning down and... I need a light for that? No, I don't think so.

[@sotirisathanasakis9804]

No this swich is not sensor for gauge.

[@melvis2017]

Thanks for the update and the way you explain things thanks once again for the efforts and for sharing this with us appreciation. Is just what I need .I was deeging every where and no gave a good explanation like you. I had one on my volvo 240 with b20 engine the one with normal open.when I started the engine sayes almost 0 and when I shut down the engine reeds 100.please can you help me with that👍🇩🇰🙏

[@richarddiaz8248]

Perfect 👌😁 thanks for your knowledge 😊

[@PistonShack]

You're very welcome Richard! I'm glad it helped you a bit. Cheers)

[@meteorology7487]

How will I know if my sensor should be Normally closed or open?

[@PistonShack]

Hi Meteot! You can easily check it out. Unplug the connector from the sensor. Set multi-meter to Omhs. Place positive probe to the connector negative against the switch body. With engine off, switch contacts should be closed, multi-miter should read "zero"

[@jubsofficialvlog1473]

Thanks you sir to given a beautiful explanation.

[@PistonShack]

My Pleasure Jubs!

[@aakudev]

Hi, my Honda Civic had a small short while tapping a fuse to igps oil level sensor to my drl. I checked the fuse is ok but no power in the fuse slot. Good fuse means if the sensor is short? It give a check engine light now. I dont have a multimeter.

[@PistonShack]

Hi Aakash. What year is your Honda Civic? I need to pull the wiring diagram to check load and control of the circuit. Thanks.

[@aakudev]

@@PistonShack Hii, thanks for your reply, mine is a 4 door 1.8 AT 2008 Honda Civic in India.

[@aakudev]

@@PistonShack Also, the fuse location is Fuse 15 under the hood and manual shows it as igps oil level.

[@aakudev]

@@PistonShack Hi buddy, any luck on finding the diagram? Waiting for your reply!

[@PistonShack]

@@aakudev Hi Aakash, Can you get simple test light to do testing. Common problem with fuse box is water intrusion as result rust and corrosion inside the fuse box terminals. Check if you have power at the back of the fuse pins. Check wiring for opens or shorts at the points where wire can rub against metal. I could not find free wiring diagram for your car.

[@legacytrucking]

Try to do one at the time from start to finish

[@AnythingEverythingGh]

Is it the same way to test for cvt transmission fluid pressure sensor?

[@PistonShack]

I'm not sure...

[@frankmontez6853]

How would you fix broken wire at terminal ? Yes I broke the wire right at the point of going into terminal. Get a new terminal and splice wire into the old broken one ?

[@kails1941]

Sehr gut! Vielen Dank!! Thank You, Das hat mir sehr geholfen.

[@PistonShack]

Du bist herzlich Willkommen. Vielen Dank fürs Zuschauen und Abonnieren. Prost!

[@duaneshadd1070]

Have you 2016 Tucson oil light flickers when come to stop oil level is okay. How much would it cost to have this piece replaced at a dealer

[@PistonShack]

Hi Shadd, it depends where is oil sensor located. I would say if you can do it yourself. Ir could be the wiring issue down to the sensor, sensor failure or low engine oil pressure. Before replacing the sensor check engine oi pressure with a gauge. Let me know how everything is going!

[@enesb.114]

Thank you so much...

[@PistonShack]

You're most welcome Enes!

[@franciscopinedo1552]

great tutorial thanks

[@PistonShack]

You're so welcome Francisco! I am glad it helped you out)

[@hashimhassan1191]

Hi Can these used with arduino

[@PistonShack]

Well, I'm not sure. Good question. If the work prilcep of the sensor the same, I think so.

[@hashimhassan1191]

PistonShack hi.. Thanks for the reply.. I saw a project online where someone incorporated both oil pressure switch and water temperature switch and a sensor with an alarm to sound failures for the temperature and pressure... I want to try it but i dont know which kind of switches would work

[@PistonShack]

@@hashimhassan1191 That's interesting!

[@hashimhassan1191]

@@PistonShack hi...thank u..i humbly request for your help...so i have obtained all the components but i dont have an engine to test the device...for water temperature sender,i can just use mayb hot water thats about 90 degrees to sound the alarm...but for oil pressure sender,i dont know what to use to reach low pressure to test the sender...any idea on what i can use to test its functionality? Looking forwardto your fast reply,thanks in advance

[@PlamenSimeonovSimo]

My Van does not start. I took out the sensor and i mesure it, it has closed circuit, i tried to blow it with my mouth but id did not change. If if the oil is full and with or without started engine is the sensor going to change state from closed to open? I think probably not and my starting problem should be somewhere else not the switch.

[@ronnieromero7604]

Is it possible for an oil pressure sensor to become stuck on not giving me a low oil pressure warning while at the same time leaking oil due to a blown seal in the switch. therefore causing an oil leak to go unnoticed then causing the engine to run dry of oil and seize?

[@PistonShack]

Hi, Ronnie. Technically, yes. Oil pressure switch failure could lead to potential catastrophic engine failure if oil pressure dropped below 5 psi. Reasons you mention could be one of them. I use Teflon tape to seal switch threats to prevent any leaks. Cheers.

[@ronnieromero7604]

It's truly horrifying knowing that your oil pressure sensor could blow a seal, leak oil and give no warning while on a long highway trip and eventually blow your motor. Is there no fail safe to prevent this from happening?

[@PistonShack]

ECU test oil pressure switch every time you start the car. Low oil indicator should come on for a second then turn off. If light doesn't light up indicates issue with switch, bulb or circuit.

[@larwhelan21]

Really useful, thank you!

[@PistonShack]

Hi Larry! Glad to hear that! Thank you.

[@okukkelly381]

Now I can go back and confidently test the sensor...

[@PistonShack]

You are very welcome Kelly. Let me know if you have any other questions. Cheers!

[@temapProduction]

Nice. Good video...

[@PistonShack]

Thanks you, brotha!

[@NawazKhan-ny1fz]

Hello every one. Kholer diesel generato 1040 kva oli pressure shutdown , what is the problem ? Thanks

[@PistonShack]

@@NawazKhan-ny1fz It means low oil pressure switch turned engine off to prevent serious engine damage. Test the switch first. Check the engine oil level when engine is cold. Look for the potential cause of the low oil pressure as worn oil pump, no oil flow from the sump to the pump, clogged oil filter, worn engine parts due to the large parts clearances ect.. Let me know what do you found. Thanks for your interest to our channel! Cheers.

[@NawazKhan-ny1fz]

@@PistonShack Thanks dear

[@PistonShack]

@@NawazKhan-ny1fz Awesome, Nawaz Khan. I'm glad my video helped you. Thanks for your to my small KZbin channel project.

[@sandracox4341]

Can I test the sensor while it's still in the vehicle

[@PistonShack]

Oh, yeah. You can test when sensor is in the vehicle if you can get to it. Cheers!

[@sandracox4341]

@@PistonShack, thank you. I found out how difficult it was to get to in general. Thank you again.

[@PistonShack]

@@sandracox4341 You are very welcome Sandra!

[@sotirisathanasakis9804]

Oil pressure sensor = variable values in ohms or in mV , oil pressure swich = on off. You test A swich, not sensor.

[@PistonShack]

Yes, you are right! This is just pressure switch.

[@RodneyAppling]

Nice

[@woodyguilkey4047]

Thank u

[@PistonShack]

Welcome!

[@robc3863]

Sensor must have changing resistance with changing pressure, else the meter only shows 2 states, full pressure or zero!

[@PistonShack]

That's correct Rob! Thanks for your feedback.

[@puresmoke8667]

I get it but why show two at the beginning and only test one of the two no matter if it is just opposite.

[@PistonShack]

You right, because test with be the same just operating principal is different. That's good point, bzw!

[@mase202]

i just did this with an old a new sensor and have no reading? 2010 honda accord

[@pascalroy9409]

so si la oil pressure switch marche pa c sa qui ferais monter l,huil dans le vent du crank chaft

[@PistonShack]

No, es necesario tener una presión de aceite real para obtener la lubricación adecuada de las piezas. La bomba de aceite mueve el volumen de aceite, pero la presión creada por los espacios estrechos entre las piezas. Si el motor está desgastado, no necesitará presión de aceite. ¿Cuáles son sus lecturas de presión de aceite en ralentí y 2000 rpm con el motor completamente calentado? ¡Gracias!

[@PulsarTECH]

Thanks!

[@PistonShack]

You are very welcome! Tnx for watching!

[@AnimalFacts21-z9m]

My oil light comes on and off some time and after I switch off the engine and turn it on again it goes off even though the oil level is where it should be

[@PistonShack]

Oil light should turn off after oil pressure build up after 2-3 seconds. Check wiring and connector down to the oil switch it could be an issue. I would also check actual engine oil pressure by using manual gauge.

[@indraaulia4543]

Do you know what brands are normally open?

[@PistonShack]

Hi, most of the oil pressure switches are normally closed. Normally open ones used on Renault, Citroen and some other old made vehicles. Nowadays, most of the vehicles have normally close oil pressure switch. Cheers.

[@maniacalmonster2293]

okay we have continuity because the sensor is normally closed.. Jesus Christ people, how the hell are we supposed to know if it's supposed to be normaly open or closed? is it a good thing if it's open or a bad thing if it's open. does continuity mean it's good or bad? FUCK

[@DeeBee2013]

The word Diaphragm, is pronounced Die-a-fram

[@PistonShack]

Oh, that's so funny! I like it) Cheers!

[@MrElpajita]

English make no sense.

[@feellucky271]

@@PistonShack My wife's diaphragm fell out. We had 3 kids and no rearing diagram. Shoulda never dropped her diaphragm. Did you hear about the newlywed couple that didn't know the difference between window putty and vasoline? Their windows fell out.

[@Bleriotman]

I Google searched info for a 3-pin oil pressure switch. There is NOTHING here about that, so this video was useless. I have no idea why this video even came up.

[@PistonShack]

Hey William, probably this only one Google had to offer to you. 3 wires design is not widely common. You have Ground, Sensor signal ans 5V reference voltage. Checks pretty simple: check sensor ground to battery ground, should be around "0" mV. Check 5 v reference voltage. Then supply power to the sensor to check diaphragm.

[@Bleriotman]

@@PistonShack THANKS VERY MUCH! That gives me something to go on!

[@PistonShack]

@@Bleriotman Oh, no worries. Let me know if you have any questions.

[@jet6374]

you're blowing an indiscriminate amount of air in it. what psi does it switch at ??????????? Need this information to do any kind of meaningful test.

[@PistonShack]

Hi Jet, that's very good point. I forgot to mention in the video. Normally low oil pressure switch turns on at 15-20 psi or low. I set my compressor outlet pressure for the test at 20 psi. Thanks for bringing it up. Cheers.

[@jet6374]

I actually did my own test on a new bwd. brand oil pressure switch and found that it closes at approximately 1.8 PSI ( turns the light on) and opens at approximately 2 PSI ( light goes off)

[@PistonShack]

@@jet6374 that is such a low pressure at 5 psi engine will experience serious oil starvation. Not even talking about 2 psi.

[@jet6374]

@@PistonShack I didn't design the switch, I just tested it with a regulator that had a 15 psi gauge with 1psi graduations. Nowhere near 20 psi. They usually switch at very low to no oil pressure.

[@candicechrestman328]

@@jet6374 Sounds like the at was the bar measurement.

[@Manuqtix.Manuqtix]

This video was bad it jumped and skipped all the time

[@PistonShack]

Thanks for your feedback!