16v into 85.5 woes, no spark, no tach bounce, need to go racing!

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09-30-2020, 12:22 AM

#16

basic 944

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Quote:

Originally Posted by Crenshaw

Just a follow up to this- finally got her started this afternoon. It was a bad ICM all along.

Now on to figure out the noisy lifter noise from the top end....

Contgrats!

So how did you diagnose it was the ICM?

As for the lifters, should go away after some decent running. Mine does that every year after winter storage.

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09-30-2020, 11:11 AM

#17

Crenshaw

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Quote:

Originally Posted by basic 944

Contgrats!

So how did you diagnose it was the ICM?

As for the lifters, should go away after some decent running. Mine does that every year after winter storage.

That's great to hear, it's a little unnerving to hear that sort of clatter after a bunch of work!

I didn't really diagnose it was the ICM, I was pretty well convinced it had something to do with the ECU itself. I had just preventatively ordered a new ICM and reference sensor mostly out of frustration. I tossed the new ICM in yesterday not expecting anything and voila, she lives!