when i turn my a/c the rpm drop and the motor usallu dies if i cant keep the rpms up myself...i thought the rpm were supposed to compensate when it turn the a/c on??

it been worse lately cuz i put my timing back to stock for using the n2o..however if i advance it for normal driving it gets better but not like it should be. i also have the intake adv 3 degrees and the exh ret 3 degrees.


is there a switch that went bad somewhere??

 

Adjust your throttle cable so it idles just a tad bit faster... My ZC Idles at about 600-700 (at the idle has mark) by looking at the tach

 

ive adjusted it so it idles at 1200 when the a/c is off...then when i trune it on it almost stalls..

 

I had the same problem in a Mustang and the same now in an F-150... maybe your driving a Ford! haha But seriously, there is a little switch or something that bumps up the RPMs when you turn on the A/C, sounds like your part went bad. Shouldn't be an expensive part.

Here's an idea, take out the A/C!

Justin D. Fender

 

Before replacing parts, you should try resetting the ecu. Pull the Hazard and ECU fuses under the hood, replace them, and then start the car. Let the car idle for around 5 minutes and you should be good. If you step on the gas or turn on the a/c the ECU will not 'learn' the proper idle speed and etc..

 

ill give it a try..

 

My old civic did this... the Idle air control valve needed to be adjusted.

 

I thought you couldn't use the AC with a ZC swap?

 

zc is a dseries..ur old stuff will work

 

even though it's the DOHC ZC?


[Modified by Gump, 3:56 PM 9/16/2002]

 

ac? what's that?

 

My ZC swap has a very functional AC. The compressor kicks in properly and works... all it needs is to be charged with refridgerant since i disconnected the lines during swap, but it physically works

 

DOHC ZC will definitely accept the CRX A/C. you just leave the lines and everything in the car when you remove the old motor. mine works perfectly.

 

Damn! And all this time I thought it didn't work! Good thing I found out now, cause I'm doing a ZC swap in a 90 CRX Si on friday

 

FYI the CRX/Civic AC bracket doesnt work... you will need to mount the CRX compressor to the ZC AC bracket. I thought they might be the same but they are different. Too bad I wasted my time polishing out that bracket now its in a junk box in my garage HAHAHA

 

Ummm! Just for your info, I just did the ZC swap and finished, the AC bracket does work, had no problems with it at all, it bolted up perfectly, as if it was susposed to be there.


[Modified by Gump, 2:27 AM 9/21/2002]