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Check engine light postmortem 200

posted by  Ryan_R on  Wed Apr 11 12:50 CST 2007
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last visit: Tue Sep 24 13:46 CST 2013
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Interesting story!

Did you clear the codes/reset the ECU after swapping the AMM (but before replacing the ECU)? I'm curious because I had the same codes with a bad AMM. Swapped in a good AMM, reset the ECU, life has been good (in that department) since.

LH 2.4 seems to be able to acclimate fairly significantly to an individual AMM, so if the original one was bad, the ECU wouldn't "know" that you swapped things, and it might have been running on the same "curve" for the previous AMM... but with the "new" AMM... (this could be the most confusing sentence I have ever typed!)

Does the original AMM work with the new ECU?

Either way, the pink -561's definitely have a reputation for getting niggly, so the -951 was a wise preventative swap regardless.

Thanks for the closure, glad it's fixed!

-Ryan (Pink -561 still in the '90, with a -951 doing wonders for me on the shelf...)
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Athens, Ohio
1990 245 DL 133k M47, E-codes, bunch of fun accessories
1991 745 GL 290k (Girlfriend-mobile)
Buckeye Volvo Club






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New Check engine light postmortem [200]
posted by  Five Bricks  on Wed Apr 11 12:24 CST 2007 >


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