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Re: Drivability issues in 89 SPG when cold
Posted by Kevin O (more from Kevin O) on Tue, 16 Nov 2004 12:51:41
In Reply to: Drivability issues in 89 SPG when cold, Nathan Bracko, Tue, 16 Nov 2004 12:30:41
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Swap out the AIC valve for a known good one. I think the car is in close loop when cold, not really reading from the o2 sensor. I am not sure how "fast" the corrections are being made for the preheater-but did you splice in a ford sensor or stock plug and play? If self-done-check the connections.
How about throttle position sensor? Clicking rick off closed position? Dirty throttle body/butterfly? How are the plugs? If the car runs good when hot, the o2 sensor should be OK.
AMM may be on the fritz-Coolent temp sensor may be broke-but really holds the idle near 1800-2200 RPM then dips, so it doesn't sound like the problem.
Got a volt meter? You can check all the sensors, as well as the aic.
Timing? check for loose fittings/clamps/vacuum lines.
Give the AIC valve a good wack with a screwdriver handle right after start-up and see if the idle changes. Oh yea, does it only spudder when you put a load on it? How does the car rev with the clutch in?
KO
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