low idle

[jnice]

i have a 91'accord ex,i recently had the head swpped to a built f22b1 vtec head,i also got a p28 chipped with the f22b1 base map...now my problem is i turn the a/c on and the cars rpms drop to about 5-600 rpm's.but with the a/c off the car will idle at like 1,000.i dont know if it has anything to do with a few of the vacuum lines being eliminated or not.any help would be great.

[deevergote]

Adjust the idle. Of course, if the low idle is only with the AC on, that would possibly explain it. The idle should be around 800.


And really? A built F22B1 head? What a waste of money... a built F22A head would run circles around that piece of crap head. The F22B1 head is one of the worst designs as far as performance goes of all the F and H series.

[WagonLX]

When you turn the air conditioner on, your putting a "load" on the motor. Your ECM should sense this and kick idle up. It also sould kick up the ELD=Electronic Load Detector. Or you could just raise the idle screw, depends on how deep you want to go.

[jnice]

could it be a possible intake leak?

[4GAccordH22]

Could be that the map in your P28 doesn't read the ELD or A/C switch. There are settings in the ECU for that.

But I would start by setting the idle by the book. Disconnect the IACV and set the idle. Then go from there.