Idle way high. Cables seem slack but just won't slow down. Can I adjust it myself or do I have to take it in? Thanks

 

Dave

You swapped in a 2.2 motor, complete with intake - is this correct?

 

Mark the IAC position, loosen the 2 screws on the top and move it slightly. As long as you have marked it you can go back to the previous setting.

 

Is this a used motor?

Was it running OK in the previous car?

All the hoses hooked up?

Thanks Imdew,

I purchased a rebuilt 2.2 from CCR in Denver. This engine runs great( had to return first rebuilt but they stood by their warranty) but the idle is a problem.

 

Dave

Check for air leaks.

Wouldn't a air leak do the exact opposite of reving up since it is unmetered air?

Not if the O2 feedback is operating.

 

Whatever you/they try doing in the way of adjusting the idle speed is going to cause problems like surging. The ecu tries to keep the idle speed at the right revs and if you alter anything you will end up with the ISC valve at one end of it's travel or the other. When the valve is at the end of it's travel it sometimes surges and sometimes they either can't bring the revs up enough when cold or down enough in some other situation. Well that's what I have found over the years anyway.

 

Have a read here, down the bottom in particular... http://www.ultimatesubaru.org/forum/showthread.php?t=103947