302 Idles erractically

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Sep 6, 2003 | 07:26 AM

nuts4hotwheels

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Joined: Aug 2003

Posts: 128

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From: Webster, TX

302 Idles erractically

I have a '86 302 and when I first start it up it idles real low then it revs up erratically, but after about 5 minutes it smooths out and I can drive. If I try to drive it, before it warms up, it does not want to go and makes a loud popping noise. If it anybody knows what the problem could be, please let me know.

Thanks!

Sep 6, 2003 | 06:11 PM

DW2455

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Joined: Jul 2003

Posts: 1,486

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From: Independence, MO

302 Idles erractically

could be EGR could be IAC, you need to do some diagnostic testing, but first you should pull oyur codes. DW

Sep 7, 2003 | 11:19 AM

circledirt

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Joined: Aug 2003

Posts: 122

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From: kansas

302 Idles erractically

fuel injected? test fuel pressure at start up.sounds like pump taking a long time to wind up to full pressure.map sensor or vacumn to it? ign module possible also,or pick up coil in dist.

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