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I Read your suggestions and ...
Posted by Pierre in Canada (more from Pierre in Canada) on Fri, 25 Jul 2003 04:54:18
In Reply to: Read this on the AIC :, Lu, Thu, 24 Jul 2003 18:50:30
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Lu, as you suggested. The idle hoovers around ~800 rpm on a stone cold start in the morning for instance. After a highway run, the idle rpm jumps
up to ~1500rpm and stays then solid without any hesitation. If I disconnect
the AIC connector nothing really happens at all and I can't read any voltage between the connector's pins. Tapping on the AIC doesn't lower idle as many here have suggested. I am not much of an electrical literate person but I'm trying to grasp the little pieces.
Which pin on the ECU supplies current to the AIC. I might simply have a defected ECU altogether. Actually, now that I'm thinking about this. shouldn't unplugging the AIC connector trigger the engine light to come on?
If I unplugg the AMM connector, or the coolant temp sensor I got a "check engine light", but unplugging the AIC connector, TPS connector, purge valve (canister) connector doesn't. Is this the way, it is supposed to be ???
Please tell me the facts.
1990 Saab 9000 Turbo 2.0 liter.
posted by 47.248....
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