idle problem!

[spoolin91gsx]

hey guys, the car is finally running, sounds awesome and i've already had my next door neighbor complain that its to loud when I start it up everyday, lol, heres the issue, its starts fine but has a high idle around 1500-1800rpm, there is no visible vacuum leak that I can find anywhere, so heres the question, i'm not sure what its running for timing but thats the one thing that I haven't adjusted yet, and the car isn't tuned and I know its running a little rich. my only question is, could that be an issue that could possibly cause the high idle of not being tuned and the timing being a little off.

[:Quirk:]

nope

[polarisman14]

Does the idle go up and down between 1500 and 1800? If so there's a chance that you're getting some idle surge. The intake manifold on these, on the (I believe) driver's side has a small rubber plug. Under that there is a screw with an O-ring on it that controls the idle. If the O-ring is damaged or has shrunk down/broken down from age, or the rubber plug is missing, it can result in idle surge (or just an overall random/searching idle).

Also if you know anyone that has access to alldata you can reset the idle, provided you already looked for idle leaks and addressed the O-ring and plug.

[Vr4x4]

Does the idle drop when it warms up or does it stay up there??

[spoolin91gsx]

Does the idle go up and down between 1500 and 1800? If so there's a chance that you're getting some idle surge. The intake manifold on these, on the (I believe) driver's side has a small rubber plug. Under that there is a screw with an O-ring on it that controls the idle. If the O-ring is damaged or has shrunk down/broken down from age, or the rubber plug is missing, it can result in idle surge (or just an overall random/searching idle).

Also if you know anyone that has access to alldata you can reset the idle, provided you already looked for idle leaks and addressed the O-ring and plug.

ya, i've looking into almost the whole thing except for that plug on the intake manifold, but i contacted my friend that i bought the car from and he said to look it up on the safc installed on the car and set it to -1 or 0, i believe it is set at -40 right now, so i'm going to give that a shot and take a look at the idle adjustment screw and see what I can work out with that.

[spoolin91gsx]

Does the idle drop when it warms up or does it stay up there??

it stays pretty steady the whole time, but every once in a while i start it up one day and its a like 1500rpm, the next days its like 1800rpm, its strange, but i'm going to look into some things a little more and keep you guys updated on it.