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Old September 23rd, 2006, 07:44
90MJ242 90MJ242 is offline
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WANTED-ECM

Need ECM for 1990 Comanche 4.0 Auto trans, believe any 87-90 Cherokee or Comanche ECM for 4.0 Auto will work (?), my Bendix # is S101140203A. Saw one on e-bay, but ends in B (manual trans?). Did a search for ECM, but found nothing. I'm sure it's my PC technical incompetence (-:
TIA
-Scott
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Old September 23rd, 2006, 08:47
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OverlandZJ OverlandZJ is offline
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Re: WANTED-ECM

I have one from an 88 XJ 4.0 with automatic. Will that work for ya? I will see if there is still a number on it.
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Old September 23rd, 2006, 12:50
90MJ242 90MJ242 is offline
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Re: WANTED-ECM

Thanks for the reply, John B.! From my limited knowledge and research, an ECM from any 4.0 Multi-Point Injection Renix system (not throttle body injection) will work, as long as it is for automatic trans, as manual and auto have different TPS. Send me a PM i you have one, let me know how much $ and if you can ship it to me, and I'll take it!
-Scott
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Old September 23rd, 2006, 13:03
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old_man old_man is offline
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Re: WANTED-ECM

Just to correct some very minor mis-information. The ECU's are the same except that the automatic has an additional input to bump the idle when the auto is in gear. They use the same signal for the TPS. The automatic just has a dual section TPS.

Any Renix automatic ECU should work. There were minor internal changes but nothing you will see from the outside.
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Old September 23rd, 2006, 13:05
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OverlandZJ OverlandZJ is offline
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Re: WANTED-ECM

OK, pulled mine out of the cabinet...Bendix S101 140 202A

PM you..
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Old September 23rd, 2006, 13:26
90MJ242 90MJ242 is offline
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Re: WANTED-ECM

Thank you, Old Man for the correct info! The biggest kick in the pants is that I had a 1989 XJ in my driveway for 4 months while I pulled the engine, AW4, and transfer to rebuild/keep as spares for my 215,000 mile Comanche, but I failed to pull the ECM and the guy towed it away last week! Then I jump started a stuck Range Rover, and toasted my ECM. Isn't that how it always works? John B-I'll PM you with my info, thank you much!!!!
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