car idles high on initial start up.?

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Jun 28, 2007 | 03:39 PM

yellowbird

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From: brighton mich.

car idles high on initial start up.?

can anyone give me some guidiance on what might be going on with my idling problem,seems as when i leave my car sit a few days[cold]and go an start it up,it wants to shoot up to around 16-1700 rpms and then start to decline down to around 900. car is a 2002 t.a after market t.b. cam, headers.stall. mods where done a couple of years ago,but the idling issue started this spring. p.s, over the winter i had a battery tender on all winter.anything i can do or look for.? what about turning down the idle screw.?

Jun 28, 2007 | 05:18 PM

1320 killer

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sounds like you have a slight leak. I would check around the intake manifold

Jun 28, 2007 | 05:22 PM

NHRAMAN

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From: Vancouver,[KITSILANO].B.C. Canada *WestCoast*

check EGR gasket.

Jun 28, 2007 | 07:22 PM

99NMB

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From: Springfield, Missouri

if its idleing high then dropping back to normal, i would figure it would be a cold start thing right???

Jun 29, 2007 | 06:12 AM

Fb0dy0nly

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From: Detroit ROCK City

yeah, most engines do this in order to heat things up quicker. It is normal for the engine to idle on start up a bit higher than it does after it is warmed up, especially in the winter but at the same time, 1700rpms is pretty high. When I start mine up in the morning, it will stay around 1000-1100rpms for a minute or two, then drop to normal idle.

Jun 29, 2007 | 06:24 AM

Jon5212

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From: Indianapolis Indiana

^^^+1 I was going to say the same thing, pretty much the "choke" feature when the car is cold. Every car i've owned when I first start it idle goes up to ~1500-1600 rpm.