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Driving with the ECT Sensor Disconnected

FlaminWhite97GTP

FlaminWhite97GTP

New member
I have been driving for about 2 week with the ECT sensor Disconnected because it woulda fried the PCM if I plugged it in. I also havent had the time or money to replace it after spending over $1200 on Gasket & Trans work. I am getting it replaced this week, but will I be fine when I finally replace it. I know it sound like a dumb question to some of you, but don't bash me on this lol, I couldn't find anything in the search forum.

The problem I have been having:

Coolant fans stays on
Runs Uber Rich
High Idle
Hesitation on a take off
Hard to start after immediate shut off
TCC acting a little strange
MPG decrease a little
 


There are quite a few tables in the pcm that run off of the ECT, some of them being AFR. No ECT would definitely cause all of those problems...
 
FoSHO99 said:
There are quite a few tables in the pcm that run off of the ECT, some of them being AFR. No ECT would definitely cause all of those problems...
Click to expand...

Yea that what I thought, I read up on it & I didn't know this sensor control everything because if it shows no tempature everything wont run right.


Rather B Blown said:
how is it gonna fry your pcm if you plug it in?
Click to expand...

Well I looked at the ECT Sensor to try to see if I could connect it, but It looked like the black cover was missing off the tip of the sensor & all I saw was 3 long prongs. So I said F*ck it, I didn't wanna short the PCM out until it was time for me to upgrade it. The mechanic was a great guy & had cheap prices (He's also an ex GTP tuner), but IMO I think he probably broke it when he was replacing the LIM Gaskets. He said he would replace it for $40 total with the sensor, but he like an hour from me & I dont have the time to go out that far.



Can anybody give me instruction on how to replace this sensor myself, I would great appreciate it
 
FlaminWhite97GTP said:
Well I looked at the ECT Sensor to try to see if I could connect it, but It looked like the black cover was missing off the tip of the sensor & all I saw was 3 long prongs. So I said F*ck it, I didn't wanna short the PCM out until it was time for me to upgrade it. The mechanic was a great guy & had cheap prices (He's also an ex GTP tuner), but IMO I think he probably broke it when he was replacing the LIM Gaskets. He said he would replace it for $40 total with the sensor, but he like an hour from me & I dont have the time to go out that far.



Can anybody give me instruction on how to replace this sensor myself, I would great appreciate it
Click to expand...

If he just got done doing the LIM gaskets, then yes, I would say he broke it. It is not necessary to take the sensor out to change the gaskets. But if you are not careful when you remove the LIM, you can easily break the sensor. So I would put my money on him breaking it.

But changing it is very easy. Buy the sensor. Put a little thread sealant on the new sensor. Remove the old one. Put in the new one quick. You shouldn't loose too much coolant, but check it and fill if necessary after a couple days.
 
Zef_66 said:
If he just got done doing the LIM gaskets, then yes, I would say he broke it. It is not necessary to take the sensor out to change the gaskets. But if you are not careful when you remove the LIM, you can easily break the sensor. So I would put my money on him breaking it.

But changing it is very easy. Buy the sensor. Put a little thread sealant on the new sensor. Remove the old one. Put in the new one quick. You shouldn't loose too much coolant, but check it and fill if necessary after a couple days.
Click to expand...

Ok I just bought the sensor today. I see where the old sensor is, but it looks to be in a cramped spot at a wierd angle. Zef do you know the quickest & easiest way to get to the sensor & what tools to use.
 


aww ok, that probably just me being paranoid over this new trans, it shifts great.Ok so 19mm socket, but what should I remove to get to it. because it looks crammed & complicated to get to it
 
If I was changing out mine, I would remove the upper coolant hose from the thermostat housing. First drain some cooling off into a clean container using the petcock. Then remove hose from thermostat hosing only, I would a wrench instead of a socket to loosen/remove the ect. Use either a thread sealant or teflon tape on the ect threads and install. Reconnect upper hose to thermostat neck. Top up coolant level in radiator and overflow if needed.
 


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