 Turning on A/C makes my car shake, whats wrong? |
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 Jun 5, 2008 - 6:25 PM
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Enthusiast  Joined Apr 18, '08 From Oakland, bay area, California Currently Offline Reputation: 1 (100%)  |
when i turn on my a/c i can feel the car vibrate and when i turn it off it returns to normal. if im in motion, i cant and dont notice the change in vibrations but if im at a standstill my car begins and continues to vibrate more than normal until i turn it off. as soon as its off, the vibrations stop. what do i do? it still blows cold and doesnt blink ever. thanks guys!
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Jun 5, 2008 - 6:47 PM
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Enthusiast Joined May 6, '08 From Lisarow, NSW, Australia Currently Offline Reputation: 0 (0%) |
mine does it too, I think air conditioners take a bit of power when on and make your car slower so shaking on idle may be normal.
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Jun 5, 2008 - 6:51 PM
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 Enthusiast Joined Jan 25, '06 From MN Currently Offline Reputation: 19 (100%) |
The A/C drains alot out of your car, if its little vibration its normal.
-------------------- "To Protect And To Serve The Wealthy" -POLICE
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Jun 6, 2008 - 1:00 AM
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Enthusiast Joined May 13, '07 From riverside, ca Currently Offline Reputation: 0 (0%) |
i know that when u turn on your A/C, it is supposed to adjust your car's idle accordingly in order to counter the stress the A/c puts on your engine. But i still dont know which vacuum line does it and how it control it , so my car shakes as well
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Jun 9, 2008 - 9:52 PM
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 Enthusiast Joined Jan 13, '06 From UnderTheGround403 Currently Offline Reputation: 2 (100%) |
Check you AC idle up. can't get onto bgb again for some reason, so I can't tell you 100% what to do. The A/C idle up is a VSV AFAIK, and is located against the firewall, by the diagnostic box. Check the vac lines running to/from there, and try adjusting the screw on it.
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Jun 10, 2008 - 12:18 AM
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 Enthusiast Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
on my ST the AC idle up valve is on the firewall right behind the intake manifold.
-------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
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