Bouncing idle since head swap, HELP!

[airbrat]

Recenlty did a head swap from a 97 onto my 95. Everything went smoothly and the car fired up just fine. My only problem is at idle the rpms will bounce from 1500 to 1800.

Does anyone have any ideas?

Thanks

 

[4nturbo]

Sounds like you mite have a vacume leek if the IAC (idle air control)
stepper motor can't control the amount of air comming into the motor at idle it will bounce around trying to control the idle

4nturbo
stemar motorsports

 

[airbrat]

Originally posted by 4nturbo
Sounds like you mite have a vacume leek if the IAC (idle air control)
stepper motor can't control the amount of air comming into the motor at idle it will bounce around trying to control the idle

4nturbo
stemar motorsports

well the bouncing doesn't happen all the time, maybe 90% of time. Assuming it was that vacuum line I would think it would be consistant, right?

 

[4nturbo]

True If its a vacume Line thats leaking it should be constant when do you see the problem most at cold start up or is it randomonce the car is wormed up does the surgeing go away did you try readjusting the biss srew
4nturbo
Stemar Motorsports

 

[airbrat]

even after my car is warm the idle will still bounce. Can you tell me where the biss screw is? I'll try to mess with it when I leave for lunch.

Thanks

EDIT: nm, I found it

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