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RednekYJ 01-06-2013 02:05 PM

89 yj ECM
In my 89 2.5 manual trans the ECM, ECU, computer whatever ya want to call it is mounted behind the glove box. To remove the section you need to remove the 4 hex head screws holding the door on, 3 screws holding the top part to the rest of the dash and 4 7/16 nuts 2 on either side of the door

RednekYJ 01-06-2013 02:07 PM

Here is what it looks like removed. The ecm is the silver box in the center. The gold valve near the top left of the opening is part of the heating system

stretch05 09-03-2013 07:27 PM

Difficulty of replacing?

RednekYJ 09-03-2013 07:50 PM

1hr the first time around, very easy even for a beginner

BCDonny 09-03-2013 08:04 PM

are you still using the ECM?

87 Florida YJ 09-03-2013 08:21 PM

Thanks Rednek. I tried to take mine out a couple of weeks ago but didn't know about the two nuts on the inside of each side of the door. i just didn't see them. Thanks for sharing this info.


RednekYJ 09-03-2013 08:38 PM

Yes. I am using it. I thought it was toast but turns out it was filled with water. Dried it out and it's been fine ever since. It was winter when I had this problem and was tricky to figure out. Jeep would start and drive fine, bout 10 min later it would die and not start for 1-2 hrs. On a hunch I pulled the ECM and found it waterlogged.

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