How to Test a Throttle Position Sensor TPS - Without a Wiring Diagram

Here is a quick video on how to test a Throttle Position Sensor TPS with a multimeter. Also I show you how you can figure out what each wire on your sensor is for without the use of a wiring diagram.
Please Consider Supporting My Channel at : / rnwdisclaimer:
Due to factors beyond the control of Ratchetsand Wrenches, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Ratchetsand Wrenches assumes no liability for any property or personal damage that may arise from doing a repair on your vehicle after watching any of my repair video's. Due to factors beyond the control of Ratchetsand Wrenches, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Again Any injury, damage or loss that may result from improper use of tools, equipment, or the information contained in this video is the sole responsibility of the user and not Ratchetsand Wrenches.

[@grahamegoodwin5529]

you do a marvelous job explaining car systems and how to deal with them. I am thinking about putting you in my will.

[@christofortuin1102]

Tps reading is higher on idle speed,.car also missing a lot,.what can be the problem ?

[@justinmcguiness1989]

Hard to find videos that included everything. Def thumbs up

[@kangaroux0]

Thank you! Very clearly presented and thorough! I had to look around for a little bit to find someone with all the data on how to do this.

[@markmarkw1919]

Really great video; Direct, Concise, and thorough! Rivaled only by Eric the Car Guy! No dead air time or hemming and hawing, etc.

[@edwardharvey5839]

Your video was very insightful. Thank you. However, what happens to performance of the engine and transmission if the TPS is bad especially if the TPS is a double with the transmission on one.

[@martystevens8357]

Check the throttle body for excessive space between the valve and the bore. If excessive, it can cause high idle.

[@rsbharley4766]

Another great video, thanks. Cheers

[@tedsegatti6378]

I would just like to say that your video was and is very helpful. I would recommend this to my friends. Thank you for taking your time to help us not so informed people. Lol

[@laohantun7404]

Thanks a lot buddy, its so clearly explained.

[@myRatchets]

+Lao Han Tun np, glad you liked it. cheers

[@hectornyambiya4671]

Very informative !! Thanks

[@hakanbehcan]

Nice explanation. Any short circuit between +5 and ground is possible and gives damage to ECU, instead you can just test the sensor measuring the resistance between pins.

[@pamelavance648]

Explain more please

[@roccozarcone4393]

I like your videos they’re great I was wondering if you can help me out with a problem I have a 2001 Hyundai Santa Fe 2.7. V6 accidentally the input sensor for the transmission had broken but modular I don’t know which way the three wires go how to put it back the right way😊

[@oscarluquin8107]

Great videos!!! I learned so much from painting my car how to use paint guns to auto mechanic ..thank you

[@cotton123ful]

That was the closest to my problem,someone and me messed with that screw that moved the plate,I'm not sure if the plates should be closed alittle open,or the way I did it was till it would idle,thanks.

[@freshstart3555]

Another great video and Detailed. Thanks man and God Bless You

[@LarsGTV6]

From Norway; thumbs up! Good step by step video.

[@mikeautostudent5562]

Thank you for your detailed step by step video.

[@trishamaydannesabino4528]

Hello thus all car TPS reading in full close is 0.95? My engine is k6a 600cc turbo i only calibrated it in 0.81

[@christofortuin1102]

The reading is higher on the idle position and the car is missing a lot,.must I replace the TPS ?

[@robpaul7900]

What would happen if you try to check wire for ohms resistance on the 5v ref. hot wire the one you said not to will this ruin my ECM? Any help need reply ASAP.

[@edgarantonio6717]

Thnx for the info. I did this back probing with enginr on. I got closed throttle valve 0.16v and full throtlle 3.99volts reading. What does it mean sir?

[@pmanol1]

Thank you!

[@joewhatsup]

Thank you sir, great video

[@pedritoc.c.t.665]

Good video . how do you get the commercial adds

[@emmanuelpokana4779]

thank you! in terms of the voltage supply or the expected readings on the multimeter, do all the cars have the same reading or different? i have Mitsubishi pajero io - what should i expect on the multimeter?

[@nickmostlly4952]

Hey, this was great! Replaced my TPS because it was consistantly reading 3.39v on the center wire with little to no variation. After replacing the TPS, same thing! I then diconnected the TPS and found the 3.39 volts is coming from the wire, not the TPS. I got on a corvette forum, tried an Olds forum, got a service manual (89 caprice 305) followed the wiring looked for shorts, replaced the ICM. The code reader is still reading 21, TPS voltage to high and 45, rich exhaust (make sense). Any Ideas? Thanx Much!

[@robertstrickland7098]

Hi and thanks for your fine videos. I checked the terminals of the throttle position sensor on my 1988 Volvo 745, only to find that 5.0 volts was being provided on pins 1 and 3, with no voltage from pin 2. As I understand, the tps on the volvo 240 that you made a video of, only provided one pin with 5.0 volts. What may I conclude?

[@Salinast]

Your doing real good. How about Dodge Ram vans 1500

[@Apocalypse4162]

I've spent a half hour trying to remove my wire connector, can you elaborate on what I need to do to pop it off? Its about to break if i put any more pressure on it. Thanks

[@stevenhyde8399]

Thanks a lot!!!!!!! Clear an simple

[@firstmultimedia5968]

great video i disconnect the cable of the TPS and got 5v reading from ground to supply and and also i got a 3v on signal to ground under ignition key set to on position only engine off. is it normal i got a 3v on signal to ground terminal from the cable of the TPS ? or theres something wrong from the ECU? thanks for the feedback

[@romeolagardon4041]

which one comes first the Engine throttle control or the throttle position sensor? are they the desame?

[@Venkateswaran.]

Hey buddy.. What will happen if we remove the throttle position sensor connector and drive the car as usual? I'm stuck with my Fiat Palio's 1.2 (2002) faulty TPS and couldn't find one. Does removing the cable from the sensor and driving the car as usual causes any problem? Awaiting your response..Thank you!

[@gavinmattingly5969]

What if I have a constant 5 volt wire which is the very right but the middle wire has above 4 volts but less then 4.7 volts and the ground is .03? Then also when I back probe it it starts off at 1.02 and WOT it’s like 3.7-3.9?

[@johnkosheluk1041]

I have a little problem I have a 1992 ford ranger I just did the heads on it replaced cap rotor wires plugs the problem is when I start the engine it sputers and then it cleares up and runs Pirfict but as soon as I shut off the key it happens agin hot or cold and no codes can you give me some info I what to check we allso cleaned the upper intake can it be a tps doing the i am going to check it like your video

[@burnemallfireball1667]

what about changing the fuel filter and running some injector cleaner in the gas tank to clean out fuel injection I did that and myns is still hesitating but ima. try your but other than that what else could it be ???? thanks

[@jr0945]

I am replacing tps, should the reading be 0 or 1 volatge to be correctly calibrated? - Thanks

[@aodhmacraynall8932]

Good video!

[@jgeorges3061]

very good explained and good info as always thank-you from taking the time to share and would be very nice to see more videos on timing belts if u have one on ur hand soon. J.georges ps. been subscriber since the first video you posted.

[@myRatchets]

j georges Wow glad to meet you sir, always a pleasure to meet my most loyal viewers :-) I would love nothing more to do a timing belt job, but currently have nothing that needs it, will talk to my friend and see if he wants to get it done on the Camry though..lol. Cheers

[@user-mn6ze7rm2p]

03 Avalon with A541-E tranny. Have had a hard shift into 3rd for 8 months, now in LIMP. P0751 shift solenoid a performance or stuck off DTC. Found that Shift Solenoids 1, 2 are clicking but one (RED Wire) sounded weaker. Followed your tutorial on TPS, have 5v at Constant Multi Supply Wire, but can't locate ground. One of the other 2 wires produces a very faint sound similar to radio interferrence, but nothing from 3rd wire. Any advice is very appreciated!

[@puffersparadise481]

thank you for posting videos

[@jjmkenya]

Hi, how do you calibrate TPS that has electronic throttle, drive by wire

[@inamrehman8709]

Can u please answer the question below. Throttle plate was sticking, so I turn little bit throttle stop screw. Now no more sticking, idle rpm is now 1000, but problem is continuouse rumbling sound inside my car. Following checks were made. No air leage in intake air. Air Filter is clean. TPS voltage is as per manufacturer recommended. Spark plugs are good no mechanical fault. How can we reduce idle rpm without throttle stop screw adjusting?

[@familyfirst7027]

He never answers smh

[@LIL1DOPES]

If voltage stays at 5.10 and doesn't increase nor decrease could it be a bad tps or the wire harness

[@petercami4351]

Great video. Thanks. I am getting a constant 3.8v on my signal wire when disconnected from tps.plug it in to tps and it drops to zero but as soon as I twist throttle it jumps back up to 3.8v any ideas?

[@Kickbasser]

Hi, did you find the problem after all?

[@prestonransome5362]

Very clear. Thanks.

[@BorisKid]

I am getting error 41 so I bought a new after market tps. the old TPS brings rpms down to 750 while the new one only brings them down to around 1000

[@salemogla1495]

in simulation test for good sensor you have increase and decrease rapidly what will happen in this case if the sensor is bad

[@samer4977]

i cant understand there are 3 type of air sensor throttle and maf and map what is the different between all of these sensors ???

[@erwinpurigay8263]

Sir my nissan sentra i try to do a relearn prucedure but the checkengine light is not blinking is just steady do you think what is the problem of my t.body kindly help pls. Thank you sir

[@MikeBlezien]

do you have a video on testing TPS on throttle bodies that don't use cable control but have the TB motor instead is there a different procedure to do this or do you need a scanner ?

[@sammycrack0dirt]

Mike Blezien hey man if you find any answers on digital tps, lmk if you remember to. What kind of car you have?

[@i-84grow.49]

I change tps in my 2004 Kia spectra 1.8 engine drive it for 2 months fine now the check engine light come on with code po121 tps again what you Think could be the problem

[@davidlubin7389]

Great videos...subscribed and been watching many...appreciate the content and straight-to-the-point-methods! Quick question. I have a '91 Camaro with an LS1 engine. It has a new throttle body with new IAC & TPS. PCM threw a P0122 code which is low TPS voltage which should be around 0.5v-1v at idle up to 5v at WOT. Using your video, it read 0.13v at idle (which explains the code) and only 3.94v at WOT. Since the TB was new, the manufacturer sent me a new TPS under warranty. When tested, it was perfect...just under 1v at idle and 4.95v at WOT. A day later, the new TPS was back to the same range (0.13v at idle & 3.94v at WOT) which threw the same code P0122. Any ideas as to what could cause this voltage drop? FYI, this is a newly swapped engine. I am at a point of "crank, no start" and am troubleshooting that as well. I do have voltage at injectors and coils, spark and 58psi of fuel at the rail. Thank you!

[@myRatchets]

Hi, if the reference voltage from the pcm to the tps is as it should be (measure with connector unplugged) and there are no other components that use that ref. voltage in the same circuit as the tps than the problem is more than likely the tps again. as far as your crank no start problem I would check for injector pulse next than compression. gl

[@davidlubin7389]

@@myRatchets Thank you...going to check pulse & compression. Think MAP and/or MAF sensor could be a contributor? If so, can they be tested without running engine?

[@davidlast3705]

Thank you. Your the best.

[@vikkingooo]

Will this work on a 08 ford explorer?

[@markgaitan2975]

How do you check ecu and obd2 connection.

[@s0nnyburnett]

I never would have suspected someone tampering with the stop screw. That's the kind of thing that would drive me nuts for days.

[@FroztiProductions]

Can't seem to properly back probe it... But on my obd scanner it shows 9% at closed throttle and 90% at open throttle... Doesn't seem ideal.

[@mike101E]

Can you do a video how to diagnose an Electric throttle body please thank you

[@fieldsofomagh]

What was the reason for tapping the Tps while recording the voltage change ?Would ohm-meter affect Pcm on the signal wire ?

[@isa5537]

he said, to pretend the motor was on....lol

[@davedoris9396]

How do I check the tps for 2001 Altima ? It has 2 connectors,help

[@samanthaburleson4698]

I have a 2002 Dodge Caravan and it throddles up and down. Also it will gear it's self down while I am given it gas. it acts like it isn't getting the gas and I have it to the floor. Also it drinks the gasoline to go 15 miles cost bout 10 dollars. what could this be

[@vincentmokgako9608]

How do I remove the valve cover

[@SaddamHussaintech4u]

how to adjest it when it is moved from its position

[@coils1945]

Can anyone tell me if the voltage coming from the computer through the signal wire to the TPS applies to all vehicles? I own a 93 Grand Cherokee 4.0 L and with the connector disconnected I am getting roughly 4.3 volts coming from th ECM through the return signal wire and to the TPS connector. My constant hot from the ECM is 5 volts and my ground is good it is my understanding that there shouldn't be any voltage aside from just below 1 volt on the signal wire. Can anyone please help. Thank you...also my overdrive is very erratic. It triggers on and off when I accelerate, I can feel it shifting on and off and I can see my overdrive light flickering as it happens almost as if there is a short. These are not DTC codes flashing. It flickers every time the overdrive goes on and off when I accelerate

[@alexteddy1203]

Thank you.

[@sammycrack0dirt]

You have anything in digital tps???

[@AnythingEverythingGh]

I had code P0121, replaced the TPS sensor. Still having code lighted back. What's wrong Help

[@felixliew4332]

good job

[@silkes8511]

Where is your shop located?

[@MrHulk-gy1cd]

Hey Dear, I am pleased to see u delivered knowledge with ur Sincerity in excellent way. I activated my KZbin Profile just to appreciate u and asking u to help me. I have Honda Civic 98 With D-15 B Engine. Whenever I release Pedal after accelerating Car's Engine (RPM) Dies-Off ( RPM Touches 0. Check engine and Battery Indication on and Off . Engine tries to survive sometimes it go Off Sometimes it RPM goes back and engine won't off. I changed my ECU. I changed my Choke. when Mechanic set it to advanced (Open more Fuel adjacment) it works fine at 1200 RPM. I am really worry why engine Dies-Off ? kindly help me I shall b very thankful and appreciate ur concern !

[@pamelavance648]

Link to 4 wire tps with idle switch video 😮

[@ryanstokes1793]

So what if the tps always read 5.00?

[@raulperero]

thanks

[@Andrey11998899]

?hi i have 7 wire on harness to throttle body how to check so much wire

[@philstat100]

Again Thank You for the great video and information. Hey! Joesph Hoffee. It would be nice if You try to grow up! Valuable information given and all You can do is critiise

[@TheSleepyGator]

Why wouldn’t this work on a DBW car?

[@faceentertainment130]

thanks My bro

[@carslover3509]

Great love you frind

[@simonriddick]

I have a 97 Camaro 3.8 and it loses voltage to the tps. I have a brand new Wells tps and a bunch of used ones and they all show the correct voltage. Sometimes when the motor is hot and sometimes even when it's cold it will rev itself but seems worse when hot. 3000rpm sometimes and I have to put the clutch in. When the car revs itself none of the wires at the tps show voltage at all. And usually a off and on will reset and bring the voltage back. To me it almost seems like the pcm could be a cause but I don't know enough. Anyone have any idea?. It actually hasn't done it all this week but i'm sure it'll be back.

[@angelespinosa9843]

simonriddick rsdww

[@aresp2707]

Sounds like it could possibly be your idle air control valve. It is an electronic part, but it is something that can be cleaned usually. While you're in there, you might as well clean it all. Do the Throttle body (Not the sensor, but the actual Mechanical Part), EGR valve, IAC valve, and MAF sensor. If you have never done any of those task before, it should make a hell of a noticeable difference that you will feel in your vehicle's performance. I'm not a Mechanic, but I study as much as I can, and it certainly helps having certified mechanic friends that I have watched work on my vehicles over the years.... You kinda can't help but learn shit. Lol. Hope that helps. You shouldn't have any problem finding videos on how to do each one of those things. Personally I always watch multiple sources for similarities, and differences in what they have to say. Sometimes you just run across someone that really stands out with their knowledge, so if they're are numerous people saying one thing, but that one person says something unlike the others. If they strike me as having a better understanding of the subject.... that's who I'm rolling with...

[@abunaif596]

1000 TANKS

[@JosephHoffee]

how many times can you say throttle position sensor in a row the wrong way!? towards the end there it became throttle posichsensor

[@markmarkw1919]

So, what's your point? Did his enunciation confuse you?

[@andycheatle1732]

He has a foreign accent - big deal - guess what, there are regions of the UK ( where English came from btw - just checking you know that ) where I guarantee you'd understand nothing they say. Why don't you come over here & tell them face to face - you'd be very 'welcome'

[@anthonynicholls8010]

✌️✌️

[@JosephHoffee]

but yeah, it helped alot.. im just givin you shit ;)

[@leontaylor3572]

I was having the same issues and I mean exactly. I changed the fuel filter and nothing. I changed the air filter and it fixed it. No one ever says to change that and air flow especially under a load like putting it in gear is EVERYTHING I repeat E V E R Y T H I N G. Auto experts do not impress me.

[@roadstar499]

Most people always keep their air filters clean as well as change oil on a regular basis thats very basic stuff we learn when we are kids maintaining the lawn mower... believe me there is a lot more to fixing cars...many things cause similar symptoms...

[@mihayelcharity51]

Pj Mask's

[@philstat100]

OOPS! My spelling is just as sad as Hoffee.