Car wont hold an idle when it first starts up!!!

[slvrstingray]

ok... got a 92 laser RS Turbo.... with an idle problem. When the car is cold, when you first start it up, it doesn't hold an idle, it wants to die. To keep the car running you have to give it some gas and hold it until it warms up a bit. When the car finally warms up.... it idles just fine! I had the caps in the computer replaced already. Any ideas???

 

[ADrewzki]

Hm.....could it be an O2 sensor going bad maybe? Sounds weird.

 

[terrible]

Does your closed throttle position switch work? If not it can cause idle problems.

 

[ADrewzki]

Does your closed throttle position switch work? If not it can cause idle problems.

Would that cause a different situation when the car had warmed up though?

 

[blackGSX2g]

Any updates on this? My new 6-bolt is doing the same thing.

 

[steve]

What does it idle at once the engine warms up?
Does the engine idle up when you turn on the AC?
Has the coolant lines to FIAV been bypassed?
Do you have a datalogger to check for codes and look at the outputs of the various sensors like the engine coolant sensor.

Steve

 

[slvrstingray]

got it fixed... the green wire connected to the throttle body broke off by the TPS sensor... put a new connector on it... works great!!

 

[blackGSX2g]

What does it idle at once the engine warms up?
Does the engine idle up when you turn on the AC?
Has the coolant lines to FIAV been bypassed?
Do you have a datalogger to check for codes and look at the outputs of the various sensors like the engine coolant sensor.

Steve

Idles at about 750-800 once warmed up

idle increases when I turn on the AC

No coolant lines are bypassed

Coolant sensors look fine, both on the logger and the dash

o2 volts dont' seem to move very much, but would that cause a cold start problem? It's fine once its warmed up.