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#2
10-02-2005, 07:47 AM
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Unless you have a carb and not TBI the ecm will handle the idle speed. Even on your 87. The aldl is for diagnostics on your truck, not programming. I think you're confused as to what your friend told you. You disconnect the ECM from the distributor for timing. Not ground the aldl.
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#3
10-02-2005, 12:56 PM
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Re: how to ground ALDL connector
On some model TBs there was an adjustment for min idle speed.
There is a special tool to block off the air port to the IAC and then you can turn the min. idle screw. This is a base adjustment, the PCM controls the idle speed thru the IAC valve position.
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