So I was comparing part numbers to see if by chance the 99 Durango I just got may have a compatible ecm. And doesn’t look like it with a quick review of compatible part numbers between the 2 vehicles.
But it seems this reman ecm may be returned as long as it’s not burnt, modified damaged etc?
Engine Computer fitting all 1996 Jeep Grand Cherokee models. Compatibility will vary for these units, please review the list below to ensure it will fit your vehicle.
www.fs1inc.com
If you do find the 2 vehicles are compatible though, you’re welcome to come down and try a swap.
PS I like reading your diagnostic processes. I learn from what you speak.
Thanks for that:
I like reading your diagnostic processes. I learn from what you speak.
I'm never sure. When I go on and on about something I'm trying to fix, sometimes I think I'm just boring everyone. Anyhow I appreciate the comment and the offer on the swap however the Durango and GC security systems are different and it's unlikely that the Durango ECM would even start the Jeep and visa versa.
Something I discovered last night at about 1AM, both of the alternators I've installed on the Jeep were 90AMP units. My Jeep calls for a 120amp unit which is available from another source. If I add up, headlights, driving lights, running lights, blower motor, rear defroster and seat heaters well that's right around 90 amps. I think I estimated 85 amps. I don't really think that's the cause of my issue but on Monday I will swap it out with the proper unit.
Flagship does free shipping and they will preprogram the vin. I've used them before and that is who I will use if it comes to it. This morning I ran though doing more resistance tests. Wiring from the PCM to the alternator is just fine. However, the ECM has harness grounds, and also grounds though it's body to the Jeep's body. There was some slightly elevated resistance there, so I pulled the ECM bolts, cleaned everything up and also ran a direct ground wire from the ECM body to the battery. Couldn't hurt.
I needed to clean her up from the trip anyway so figured I'd grab a few pictures to share.
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She's really in pretty good shape for 275K I think, in the long run it would be nice to do something with the headliner as it's pretty rough. I need a new set of seat covers, I'm not a fan of leather and the one that was on the D/S is worn out. I keep hoping Seat Cover Man will open back up again, but I'm loosing hope.....