Question.

[Nicolosi11480]

I been trying to search and found nothing. On my 90 gt what would make the idle kick up when i turn the ac on? i was told the iac does that can anyone confirm? my idle doesnt change with ac on or off thanks.

[Trojan Horse]

Originally Posted by Nicolosi11480

I been trying to search and found nothing. On my 90 gt what would make the idle kick up when i turn the ac on? i was told the iac does that can anyone confirm? my idle doesnt change with ac on or off thanks.

The IAC & ECU compensate for the extra load, but if your compressor is failing it may be exerting an excessive load that they are unable to compensate for.

[Nicolosi11480]

The compressor is brand new. I find it odd that my idle doesn't bump up when I turn the ac on. Actually I hear that it is supposed to bump up idle it helps with ac cooling at idle and all too. So I guess it's time to clean or replace the iac I guess the iac isn't doing its job.

[Trojan Horse]

Originally Posted by Nicolosi11480

The compressor is brand new. I find it odd that my idle doesn't bump up when I turn the ac on. Actually I hear that it is supposed to bump up idle it helps with ac cooling at idle and all too. So I guess it's time to clean or replace the iac I guess the iac isn't doing its job.

When everything is working properly you may not notice much of anything. The idle will just remain the same and not drop from the extra load. When I turn mine on all I notice is a small fluctuation when it first engages.

[1fst86]

Try resetting the base idle

[Trojan Horse]

Originally Posted by 1fst86

Try resetting the base idle

+1 By the book. Don't just turn the screw to raise or lower the idle.