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Idle fluctuate when cold

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Old 04-12-2010, 12:25 AM
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Join Date: Apr 2010
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Default Idle fluctuate when cold

Dear Friends:

I've got a '91 V6 MPV with 138k on it. I bought it from an elderly man who had it for its life under his meticulous care. But here's the problem...

I can start it with no problem but when it's cold in the morning, the idle would be 2300rpm for 5 seconds then drop to 1200rpm for a second, and then up and down till it's warmed up and comes to normal at 750rpm.

I checked the water thermal sensor, TPS, ISC, and Air Flow meter and they're all within the normal readings. I don't know what else could be wrong..

-Willie
 
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