ECT Sensor & Wiring Diagram

[@PistonShack]

Awesome video. Saved to my Favorites! Thank you so much!

[@ADPTraining]

Thank you, see our website. autodiagnosticsandpublishing.com/

[@coffeedollsvp]

thank u....all these videos on youtube...and this is the most simplified...now i understand y i mite have a 12v reading on harness...

[@frydaddy1984]

When I checked the sensor unplugged I have 4.9 volts with the ignition switch in the on position.. The engine is up to operating temperature. When I plug the sensor back in I only have .9 volts. I am grounding the meter to the frame and putting the red lead on the red and white striped wire. What is the next test I need to perform. From how I interpreted the video. You are saying this would be a grounding issue???

[@ADPTraining]

"When I checked sensor unplugged", you didn't check the sensor, you checked the wiring harness. ECT sensor, two leads 1 sensor ground & 2 five volts disconnected. As ECT changes due to temperature, the 5 volts also changes.

[@frydaddy1984]

@@ADPTraining what test is supposed to be 12 volts? Is that with the sensor plug connected to the harness? Also the vss 12 volt wire at the top of your diagram. Where is that wire located? Thank you for your quick reply and all the help you give.

[@ADPTraining]

Ok, all sensors are 5 volts, some rare ones are 8 volts.

[@ADPTraining]

Why don't you get my Automotive Sensor Ebook. www.autodiagnosticsandpublishing.com/Automotive_Diagnostic_Repair_Book_Catalog.htm

[@CharlieSix]

The temp sensor plug my car came with is a 4 wire plug. The only temp sensor replacements is a 2 wire. I’m wondering how to wire the new 2 wire plug in place of the old 4 wire plug so I can plug into the new temperature sensor

[@ADPTraining]

Email me and we have a service for that.

[@CharlieSix]

@@ADPTraining okay what’s the email

[@onecallmecanique3921]

Very helpful ..thanks..

[@ADPTraining]

👍

[@jojity9462]

i have a chevrolet lumina,my temperature is rising up,then my technician advice me,,to disconnect my coolant sensor,,and its work,,check engine appears...but i can still runs my car even my coolant sensor is disconnect,,,what problems may arise if i continue running my car without a sensor?need advice, thanks

[@davidweum9334]

Jotit, I once had my ECT sensor "jumped" with a paperclip then I just plugged it in to my coolant tank. Both check engine and coolant warnings are on. But, my car runs perfectly year round. I discussed this with my mechanic and he said f*** it!. If it runs don't spend the money. I have a 2003 Saturn Ion. I got for free and put in about $800.00 into into it over 4 years. It never overheats. Runs perfectly. I think it's a ground or the computer is off. I just don't know. And I'm no mechanic though I did most of the work myself. The illustration above is over my head and skill. If it begins to run rough I'll decide whether to take it in, but not now. Hope this helps. David Alberta

[@jasonhunt1310]

hi im working on a mini cooper 1.6 non s done all dinos on it fan checks ok thermosate check ok 2 new sensors right but for some reson no 5volt were do i start as do i check pin on ecu or something

[@ADPTraining]

Ok

[@twinscrew9.047]

I have a 1999 Ford f350 V10 with 11 volts at coolant sensor unplugged they tell me that is right are they right

[@ADPTraining]

All sensors are 5 volt reference. That's probable a coolant switch, not a sensor to the ECM.

[@twinscrew9.047]

@ADPTraining yeah it's the coolant sensor I have 11 volts there with key on can't check it running because I have a supercharger on it and can't reach it so am I supposed to have 11 volts there thanks

[@twinscrew9.047]

@@ADPTraining and it does go to pcm

[@twinscrew9.047]

@ADPTraining and does it matter which way you wire it put a new pigtail on and don't no if I got the wires right thanks

[@Viper81766]

So if the PCM has a bad ground to it would the temperature read higher or lower ?

[@ADPTraining]

Higher or totally high.

[@Viper81766]

ADPTraining like maxed out at 258 on a Ford .

[@ADPTraining]

I suggest my 5 Ebook Starters Pack here... sites.fastspring.com/autodiagnosticsandpublishing/product/auto_tech_starters_training_kit

[@Viper81766]

ADPTraining I have the video series for those and do plan on purchasing the books . The videos are awesome . Thanks

[@jeroldescabusa3221]

Sir gud day,,,, only asking why my electronic engine stops when temperature Guage reading is in 1/2?

[@ADPTraining]

www.autodiagnosticsandpublishing.com/Automotive_Diagnostic_Repair_Book_Catalog.htm

[@Galaxy-ez8mh]

What's the role of the harness continuity wire ?! It didn't react to the sonor test on the multimeter nor does respond to the lamp test ! Please help.

[@ADPTraining]

Harness Continuity Wire, what's that, explain so we can help you out.

[@Galaxy-ez8mh]

@@ADPTraining Hi. On the temperature sensor there are 2 wires to set up, one is the powering wire that has a reading of 5 v. The other is what i'm talking about ( that can be tested only with light test, or sonor test with the multimeter). What is exactly its role? And what would happen if it didn't work correctly? Thank you.

[@ADPTraining]

Ok, ECT engine coolant temp sensor. Two wires, 5volt reference (changes with temp) and ground. Don't use testlight on sensors. On ECT sensor it's ok, you test by grounding 5 volt ref. That's what the ECT Sensor does, changes resistance to ground as temp changes. Makes sense. www.autodiagnosticsandpublishing.com/Automotive_Interactive_Wiring_Diagrams.html

[@prototype9000]

5 volts should be seen with the sensor connected and 12 volts with it disconnected

[@ADPTraining]

Not 12 volt disconnected. See my Ebooks. www.autodiagnosticsandpublishing.com/Automotive_Diagnostic_Repair_Book_Catalog.htm

[@TheUltimate65]

The impanse drops Downs when the wather been heated up..

[@fayleahagly5004]

Disconnected from which side ??? Coolant side or power side ??? So confusing this video !!!

[@ADPTraining]

There is no power on the ECT sensor. Disconnect from ECM. READ MY Ebooks... autodiagnosticsandpublishing.com

[@stevenmcadams17]

Need. More. Money lol. Haha. ,

[@ADPTraining]

Haha