idle problems

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03-03-2005, 10:16 PM

1997XLT

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idle problems

i have the 4.6 in my 1997 XLT, when i am at a light it is reving around 600, normal, then will pulsate back and fourth between 600 and 900, why is it doing this, has anyone had a similar problem.

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03-03-2005, 10:23 PM

lees99f150

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Try cleaning the IAC. search here for more info.

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03-04-2005, 12:54 PM

Faster150

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check the MAF IAC and TPS

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