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mark houghton mark houghton is offline
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Join Date: Jul 2008
Location: Central Washington State
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Originally Posted by PrimeMvr View Post
Sounds like a very plausible theory. To rule it in/out, do you have an extra battery laying around that you can wire up the LC-1 to and see if isolating it from the car's electrical makes that part of your problem go away?
That's an idea worthy of exploring. I just happen to have a 12V computer UPS battery fully charged.
But the weird thing is that AFR activity is fine, just as predicted, only until I shut the car down and things "heat soak". Upon re-starting is when the AFR's go rich beyond 3000 rpm's with no-load to speak of..just gentle throttle running the rpm's up. Things are cool at about 14.0 AFR, then @ 3000 they drop to the mid-12's.

Slapping an external power source (battery) on would take the alternator charging gremlin out of the equation. Process of elimination, as most everything is with these cars.
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 07-21-2011, 03:29 PM
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