I don?t know about the ?66?s, but later cars have a solenoid to kick up the idle speed when the A/C is on. I know Holley makes an aftermarket one for use with their carbs. Might be easy to adapt on to your car. Is the problem only when idling? Does it run OK going down the road with the A/C on? Rob McCall ?67 LeBaron -----Original Message----- From: mailing-list-owner@xxxxxxxxxxxxxxxx [mailto:mailing-list-owner@xxxxxxxxxxxxxxxx] On Behalf Of mjusten@xxxxxxxxxxx Sent: Sunday, July 16, 2006 12:10 PM To: imperial club Subject: IML: 66 Imperial IDLE Quality Hi Everyone I bought a 66 2dr Crown over a year ago from southern California. It has always had a 'Poor Idle'. When you turn on the A/C, it's awful. Short after the purchase, i installed a rebuilt compressor, new receiver/drier, and new expansion valve. The air is working well now, but I don't like using because of the idle. I just took a compression test and all 8 cylinders were between 140 and 150. The carb was rebuilt just prior to my purchase. I have recently done a full tuneup including plugs, wires, points, and condensor. Recent dual exhaust also. The engine takes off great and accelerates well. Runs COOL, doesn't ping, other exhibit any other performance issues. This car has the CAP system. I have by-passed the system and still can't get any improvement. Any suggestions? Marty 66 Crown 2DR ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm