How to replace coolant temperature sensor Toyota Corolla. Defect code PO128 Years 1991 to 2007

How to replace coolant temperature sensor Toyota Corolla. Years 1991 to 2007. And defect code PO128 Toyota

[@iluvreptilez]

This video helped me out so much my radiator fans weren’t turning on I bought every single relay for my 2001 Toyota Corolla and stumbled upon this video, turns out the plug that goes into that sensor was broken and it wasn’t sending info that my engine was overheating

[@PeterFinnTheCarDoctor]

Great job!

[@hkst51rturbocharger13]

Peter you are the best car KZbinr

[@PeterFinnTheCarDoctor]

Thank You my Friend. 👍😃

[@stephenajones4438]

Thanks for the Video. I love listening to your accent

[@PeterFinnTheCarDoctor]

Thanks !

[@AtmsSolRpr]

Thank you sir that was a clear visual of what I needed to do.

[@PeterFinnTheCarDoctor]

Excellent!

[@girohead]

Very good and specific video. I'm trying to analyze a P0128 error, coolant temp seems to be in range on my 2000 Corolla, but I get the check engine light. I suspect this sensor more than the thermostat. I've tried resetting and letting car warm up more, but the light will eventually come back and stay on. Idle seems odd also which might be another symptom.

[@PeterFinnTheCarDoctor]

Thanks for comment. :-)

[@mariogr_eos596]

Excellent explanation. Very practical.

[@PeterFinnTheCarDoctor]

Glad it was helpful!

[@girohead]

I meant PO128, which is 'coolant' something, but coolant is fine, no leaks and temp gauge/level and warmup are all fine. I think idle isn't too good either, which might be another symptom. Due to your video, I know where to look for the sensor in the first place; I'll check this and the PCV valve (as shown in another video you did) as well.

[@PeterFinnTheCarDoctor]

Hi, it could be sensor issue. Look this video : kzbin.info/www/bejne/hX66f6yXd7WVa5Y

[@Flash37207]

i have a 92 corolla can you give me a step by step lis on how to find and fix the sensor I bought the sensor its just that your video is not that detailed thanks your the only one on youtube that seems to have this car model lol

[@carlosmeneses9096]

Greetings Peter Finn I want to know where is located cooland sensor or engine coolant 1zz, thanks.

[@PeterFinnTheCarDoctor]

Hi, I will do new video in future.

[@MarioMartinez-oq7gf]

Hey how do you call this type of wrench?

[@PeterFinnTheCarDoctor]

Noted 👍

[@dimentbarg9793]

Hey, can you help me? I have 2004 Toyota Corolla 1.4 (petrol) and it has starting problems. It cranks but doesn't start when stopping after a short drive. I have taken it to a Toyota dealership but they couldn't find anything. Fuel pump changed. MAF and throttle body are cleaned. Battery and sparks are okay. Today I will change the crankshaft position sensor. Next step is to change the ECT. Also all the relays are okay Any ideas what else it could be?

[@PeterFinnTheCarDoctor]

Hi, please check compression rates ? Look my video : kzbin.info/www/bejne/pYq6qntup9OIras

[@cavalierabouhamma2828]

Thanks to your video i install temp senser by myself but last time i think i forget to put the washer and i notice coolant leak from the sensor, and i crank engine many time to start my 1997 corolla , how can i stop leak from tempreture sensor? Thanks so much.

[@PeterFinnTheCarDoctor]

Please add gasket glue

[@cavalierabouhamma2828]

Peter Finn thanks so much, any gasket glue will do?

[@marcyduggan5193]

It has no washer, use regular pipe thread tape...not "any old gasket glue will do"...

[@girohead]

Who needs to take car to shop? I do my own work and am even more confident reviewing Peter's vids. Peter, you mentioned error 22, I think do you think this ECT sensor my be causing my P028 error? I'm running out of other ideas.

[@PeterFinnTheCarDoctor]

Hi, it could be. Please test.

[@richardnava4141]

MUCHAS gracias Peter..

[@PeterFinnTheCarDoctor]

Gracias y saludos para ti. 👍😀

[@SuperImmortal24]

does aftermarket temperature sensor from autozone makes a big different?

[@PeterFinnTheCarDoctor]

These should work too, but less time. Toyota original parts last 400% more nornally.

[@Go4Gusto]

Which one did you get?

[@boldsign]

Replaced mine, now engine has trouble starting. I replaced it while engine was hot and coolant went out. It'll have a rough idle and I give it gas as it's starting. I'll try to put old sensor on and see if that has anything to do with it.

[@marcosflores2961]

My sensor only has 1 wire and my car is a 1992 toyota corolla

[@PeterFinnTheCarDoctor]

I have read your post! Good comment. Continue in the same way.👍😀

[@therapgame2685]

Great vid

[@PeterFinnTheCarDoctor]

Great info 👍😃

[@girohead]

I was about to take apart to test, but I think I'll order the part first so I don't have to do everything twice. I also wanna test my pcv. Also, when do I know I need spark plugs? I pulled one or two and they look fine, I've for 140k miles but bought it at almost 100k and know the previous owner kept maintained. I was looking at timing chain, but shop said they last forever, as do some vids on here, though I think you have one on replacing.

[@PeterFinnTheCarDoctor]

Hi, here is spark plug info: kzbin.info/www/bejne/m2O7pHaLZpd3h6M

[@girohead]

I replaced plugs and get insanely great fuel mileage now. I'll address this P0128 code next. I got new thermostat and will try that first, but I think it's okay since temp is always fine, but maybe doesn't warm up fast enough.

[@rohannokiachambers9369]

Do a video on the Altis

[@dma654]

I just did the test on the ECT sensor by unplugging it to see if the fan would turn on. My car ran a little rough when I did that. When I unplug it it's supposed to turn the fan on right? Is the engine supposed to run and sound different when you do that?

[@PeterFinnTheCarDoctor]

Yes, You are right

[@MuddyAzian]

Thanks for the video. I changed it with a cheap sensor from ebay, but now the temp needle goes almost to H, once the car warms up. Do you think I should use the Toyota OEM sensor instead?

[@PeterFinnTheCarDoctor]

Use only OEM sensor, they are more accurate !

[@brianrobinson8269]

90toyota4runner need to know where the sensors locations are.TY

[@cyrussantonil3889]

Hi Peter, love all your videos :) quick question what's the problem on cold start, the rpm is really low i need to step on the accelerator to gain rpm until it's warm. checked everything already, spark plug, ignition coil, cleaned iacv and tested it but still on cold start it got low rpm and rough idle, it runs smoothly when engine warms though. Thanks!

[@PeterFinnTheCarDoctor]

Hi, what car you have ?

[@cyrussantonil3889]

I have toyota corolla 1995 4afe engine.

[@gletarbhebhe334]

@@cyrussantonil3889 Hie i have the exact same problem on my 4AFE Corolla 97. Did u find out wat was wrong?,if u did can u share with me wat was wrong ,i would greatly appreciate it this problem is now getting on my nerves

[@DJSteboyOfficial]

Good video!

[@PeterFinnTheCarDoctor]

Thanks for info Sir. :-)

[@cooper2278]

What the other coolant sensor underneath the distributor called. I can’t find anything about it

[@jerrybartlett1142]

Yeah same here

[@sergioabundez5652]

Same here

[@moshesheckel7369]

A one wire sensor is for the gauge in the cluster. The other sensor is helping the ecu to get correct air fuel mixture.

[@november720]

Is this sensor usually the issue for P0118 as well?

[@PeterFinnTheCarDoctor]

Thanks for info 👍😀

[@RickHeilmanPeacewarrior]

Hi...I have a 99 Chevy Prism and purchased the Sensor at AutoZone yesterday. The person who sold me the part said he was 90% sure the sensor was on the passenger side and pointed to a wrong part location. I still can not find the Air Temp Sensor. Help. Thanks.

[@PeterFinnTheCarDoctor]

Hi, Could you send me video on your engine, please ?

[@RickHeilmanPeacewarrior]

Hello. Thanks for getting back to me. How would I attach the video?

[@frantzberrouet7810]

.

[@RickHeilmanPeacewarrior]

I would say yes.

[@brianrobinson8269]

what scanner do I need for my 90'4runner?

[@antrifordvlogs4809]

could it be that this sensor is responsible for warm start problems? where the engine wont start while hot? 5A EFI engine

[@PeterFinnTheCarDoctor]

Yes

[@zataralasname8833]

Hello Peter, is this sensor responsible for fuel enrichment on startup? high idle on startup? - and if this sensor is faulty can it cause a misfire, knock sensor code ?

[@PeterFinnTheCarDoctor]

Ok, this adjust fuel enrichment on startup

[@werkka]

I changed mine today, but light still comes up after a while of driving. Do I need to reset manually motor light, or is there probably more problems to come?

[@PeterFinnTheCarDoctor]

Ok, next do these: A code P0128 may mean that one or more of the following has happened: Low engine coolant level ,Leaking or stuck open thermostat (likely), Faulty cooling fan (running too much), Faulty intake air temperature (IAT) sensor. 👍😃

[@werkka]

@@PeterFinnTheCarDoctor kiitos 😁 tarkastin siis myös johdoilla koodin uuden asentamisen jälkeen, ja 22 ilmestyy. Sillon kun valo palaa, tyhjäkäynti kierrokset laskevat hieman. Valo pois, nousevat normaaliksi...

[@happyboysngals9627]

Thanks. please help. my car drives fine in city speed like upto 50 km/h, but overheats at higher speed than that. idling is fine, everything ok. only problem is overheat while over 60km/h. what to do?

[@PeterFinnTheCarDoctor]

Hi, please replace new Radiator

[@JosegpeGutierrez-xt7wd]

Hola cómo se llama la parte donde va ubicado el sensor de temperatura?

[@PeterFinnTheCarDoctor]

Gracias por comentar y tomar nota 👍😀

[@drrnbnnr]

CAN YOU TELLME WHAT THE PROBLEM COULD BE I REPLACED THE COOLANT SENSOR IN MY 2001 TOYOTA COROLLA LE BUT CHECKENGIN LIGHT KEEPS SAYING CHECK INGINE COOLANT SESOR. I NEED HELP BECAUSE I HAVE TO GO THROUGH EMI8SSIONAS.

[@PeterFinnTheCarDoctor]

+Darren Bonner Ok, you have still issue on. Check wires too. And if issues is still on, please visit the Toyota dealership center. They know very fast normal issues in Toyota. I visit too !

[@haqmalahmadi1492]

P0125 Engine fault code: After check every things like ECT, ECT wire Thermostat . mean problem is oxygen sensor. It is my experience.

[@PeterFinnTheCarDoctor]

Noted 👍

[@fanpage9142]

Can this shut down Corolla Verso at cold weather? Does the diagnostic show if it doesnt work?

[@PeterFinnTheCarDoctor]

Yes

[@fanpage9142]

@@PeterFinnTheCarDoctor it shows on diagnostics when not working properly?

[@ronaldluna6709]

Hi how are you I have a Toyota Corolla 1996 but now the fan is always on once I turned the vehicle on

[@MarioGarcia-ib9ml]

Have u figured it out? I'm trying to fix that rn on my 2005 model

[@richardyap2117]

Peter, can you recommend an obd2 scan tools for corolla pls.

[@PeterFinnTheCarDoctor]

+Richard Yap Hi, I have use this, it works ok. Look link: www.amazon.com/SainSpeed-Professional-Diagnostic-Backlight-Manufacturer/dp/B0062004GC/ref=sr_1_fkmr1_1?ie=UTF8&qid=1448612502&sr=8-1-fkmr1&keywords=QUICKLYNKS+T79+scanner

[@richardyap2117]

+Peter Finn thank you

[@mykiscool]

I'm not Peter, but I have had a positive experience with bluetooth OBD sensors. Almost everyone has smartphones these days, so you can leverage the hardware you already have to save money and have a more advanced tool. I picked up a bluetooth sensor online for about $10. I used it with the torque app for android and I can read error codes for many types of vehicles although I mainly use on an '05 corolla. It can also use the gps sensor and accelerometer in your phone along with the rpms etc to give you horsepower and torque figures as well as mpg. It's a neat tool.

[@allanramirezramirez9933]

cool!!

[@PeterFinnTheCarDoctor]

Hi and Many Thanks for feedback. :-) Regards Peter

[@dionisiocruz7]

Good nite bro whats is the name the under sensor temperature the other one is next down

[@PeterFinnTheCarDoctor]

Hi. Very good question. Can you give me more information for example video time link.

[@robertparker7441]

How do you replace a engine coolant sensor for a 99 Corolla?

[@PeterFinnTheCarDoctor]

+Robert Parker Hi, I need to do new video. :-)

[@SuperImmortal24]

hey why does my 2007 corolla shakes after i changed the sensor?. and the ideling is very low.

[@PeterFinnTheCarDoctor]

Hi, there is computer maybe looking settings. Please drive 100 miles with high revs. Computer could become better.

[@SuperImmortal24]

+Peter Finn it wont start anymore. it just crankes.

[@mykiscool]

I've had the same problem. I haven't changed the sensor yet though. You might try to use an obd scanner if you or a friend has one. If you really need one, there are many bluetooth models that you can use with your phone online for around $10. (that's how I figured out it was a temp sensor fault)

[@JazzzzyLady]

Peter, do you know the part number for this sensor?

[@PeterFinnTheCarDoctor]

+JazzzzyLady Sorry, no. Please visit here: kzbin.info/www/bejne/g5W9hoN-ltiqpNE

[@AliKhan-nf6hw]

I have diesel engine same corolla how should I find its sensor

[@PeterFinnTheCarDoctor]

Well, sorry. I am not a diesel man.

[@pablopoblete7248]

Falta las traducciones al español ..please!!

[@PeterFinnTheCarDoctor]

😀👍

[@therealspixycat]

were did you see that error code PO128 Peter?

[@rynchitravels1268]

you need to hook up a automotive code reader. Its basically a little computer that will bring up the code and possible symptoms. Most car repair shops will look it up for $10.00

[@steveradanovich4962]

poor Vodka on it.

[@PeterFinnTheCarDoctor]

😁

[@julianortiz699]

It aint the same the pig tails are diffrent for a 2001 Corolla

[@PeterFinnTheCarDoctor]

Great comment, I appreciate your feedback. And please All discuss this topic ! 👍😀

[@marcyduggan5193]

They didn't have PO codes on obd1....1991 until about 1997 was still obd1...again, you have no clue

[@PeterFinnTheCarDoctor]

👍