Sensor wiring?

SWIRLO

MEMBER
2000 ACURA INTEGRA
4 CYL
2WD
AUTOMATIC
190,000 MILES

I have had a check engine code for my coolant temperature sensor. It has caused me some little problems for obvious reasons. The temperature sensor is replaced, so I am assuming the problem lays in the wiring. Sadly, I cannot find any videos regarding this specific wiring. I have looked at wiring diagrams but its too complicated for my mind especially since I have no electrical or basic engine knowledge.

So my question is this: would it be too complicated for me to figure out and fix on my own? Also, how do I figure out what is wrong with the wiring? I watched your video on troubleshooting and testing wiring, but it seemed too hard for me to understand and apply to this situation.

Thanks :)

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Hi,

This may be easier than you think. The first thing I need is the code that was retrieved. There are two temp sensors on this vehicle. One is for the computer and the other is for the gauge. Both are right next to each other. If you provide the code, I can confirm that the correct one was replaced.

If you look at the attached pic below, it shows the two sensors and their locations.

Let me know which one was replaced and the code that was found. Also, let me know what symptoms you are experiencing.

Take care,

Joe

See pic below.

Image (Click to make bigger)

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Monday, September 20th, 2021 AT 6:13 PM

SWIRLO

MEMBER
2 POSTS

Hey thanks for the response!
Apologies, I don't know why I didn't include Code P0118. The sensor itself was replaced. The temperature gauge does not work, and the symptoms I have are trouble starting while engine is warm, sputtering/poor drivability, and high idle. That image is very helpful thanks for that. I actually found a informative video about how to check the wires using a code reader and looking at what temperature is being sent to the computer while its unplugged. I am going to try that today.

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Tuesday, September 21st, 2021 AT 10:26 AM

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Hi,

That is a good idea. A live data scan tool should provide the ECT signal and it should be near what you would expect. For example, if the engine is cold, it should be near the ambient temp. If the engine is at operating temperature, it should be around 200 degrees F.

Let me know what you find or if there is something I can do to help.

Take care,

Joe

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Tuesday, September 21st, 2021 AT 4:19 PM