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Footbone connected to the anklebone...
Posted by Jim Baran [Email] (more from Jim Baran) on Wed, 23 Sep 2009 15:28:19
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'87 900S 250k basic performance mods, solid engine, well maintained and in excellent condition.
I have run down and corrected a couple of performance robbing gremlins recently and have stumped even my most revered gurus with this last one.
This engine is managed by an EZK module that will advance the timing from the idle setting of approximately 14 degrees to 25 or 28 degrees when the revs are above 3200 RPM. I have swapped out the EZK with no change in this condition which means the problem is downline from the module. The questions are:
--what does the EZK talk to?
--what is it telling 'whatever' to do?
--is this symptomatic of another gremlin and if so, what?
TIA for your help,
JIM.
posted by 24.126.17...
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