Idle problem
Idle problem Hey everyone, I have a problem at idle. When I start the car up it will rev to about 1,000rpm then settle down to about 600, and when I put it in drive it falls to about 300-400. I changed the IAC valve and TPS sensor and it didn't help any. When I come to a complete stop it just about stalls out, if anyone can help I would greatly appreciate it.
sorry, 99 trans am LS1 - mods, TSP 85mmair lid, SLP 85mm MAF, MAF translator, BBK 80mm throttle body, Hooker Long tube headers, True dual X-pipe exhaust w/2 Borla ProXS mufflers, ASP underdrive pulleys, K&N, 160 Thermostat.....
TECH Addict
Joined: Mar 2004
Posts: 2,336
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From: Fat Chance Hotel
Maybe you need to adjust the idle. There should be a small screw near the cable side of the TB. Try turning a little bit at a time to see if the idle comes up. Don't go too far because the throttle blade will be too open.
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I have adjusted that a few times, and the idles will go up and down depending on how I adjust it, but it ALWAYS settles back down to around 400. I am going to get dyno tuned soon, so maybe that will fix it??
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