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My car idles really weird when I have the air conditioner or defrost on, the rpms move between 400-600 and last night I had the radio up, lights on, and the defrost on low fan and the car stalled. I just got a brand new idle air control valve. The car idles fine without the AC/defrost on. When the AC or the defrost is on it also holds rpms longer when I push the clutch in to change gears. Any help is much appreciated
 

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kirpy said:
check your voltage output on the altanetor. Your drawing alot of juice at once.
+1

You can also try upgrading your terminals.
Bigger terminals>Better connection>More secure
Had this problem with my stereo..
 

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Talking about autozone.. I bought these terminals from there, $16 I think for the + and like $6 for the - . Made a huge difference. I can turn on ac + everything else and still hold a steady 13.8 volts. (Note I also have HID's, 2 amps and complete stereo setup.)
 

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I have a similar problem ... Actually it's a little different when I go fast n put it on neutral n just cost down a hill around 50 + mph my car just shuts off and I don't know wtf happens .. Could it be cause I have some really ****ty battery clamps?
 
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