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Old 06-01-2012, 05:32 PM   #1
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Help fix my problem maybe?

When I turn my air to defrost or AC. Really any of then except floor I think, why does my car rev it's self. Even while I'm driving?
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Old 06-01-2012, 07:22 PM   #2
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Quote:
Originally Posted by GrabbinGEARZ
When I turn my air to defrost or AC. Really any of then except floor I think, why does my car rev it's self. Even while I'm driving?
Vacuum line. What year is ur ride?
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Old 06-01-2012, 07:26 PM   #3
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Quote:
Originally Posted by GrabbinGEARZ
When I turn my air to defrost or AC. Really any of then except floor I think, why does my car rev it's self. Even while I'm driving?
Your A/C compressor kicks on. Your car will change the idle when it is on. It will also run when you are on defrost.
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Old 06-01-2012, 08:28 PM   #4
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Quote:
Originally Posted by GrabbinGEARZ
When I turn my air to defrost or AC. Really any of then except floor I think, why does my car rev it's self. Even while I'm driving?
It has fast idle your ac mine does it to it is to make it stay running when I clutch in it jumps to 3,000 Rpms and then dies back down after a little bit
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Old 06-01-2012, 11:19 PM   #5
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Yea mine does it on defrost too. And it's a 2000 gt. can I stop it?
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Old 06-02-2012, 01:33 AM   #6
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Originally Posted by GrabbinGEARZ
Yea mine does it on defrost too. And it's a 2000 gt. can I stop it?
Dont run it is really the only way after a while keep driving with it and it well calm down some Like mine use to be bad and it's a 98 but then it slowed down have u put coolant in their lately helped mine
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Old 06-02-2012, 02:32 AM   #7
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Re: Help fix my problem maybe?

You can prolly try cleaning idle control valve it might be dirty....also do you have a tune or hand held tuner ? When I got mine tuned and it would surge like that with or without the ac comp on...They turned the IEC? down and it fixed my problem. You can try to put freon in the system.... Is the air cooling off like it is suppose to?
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Old 06-02-2012, 04:54 AM   #8
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Try charging your ac
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Old 06-02-2012, 12:50 PM   #9
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Originally Posted by southernstang00
You can prolly try cleaning idle control valve it might be dirty....also do you have a tune or hand held tuner ? When I got mine tuned and it would surge like that with or without the ac comp on...They turned the IEC? down and it fixed my problem. You can try to put freon in the system.... Is the air cooling off like it is suppose to?
Ya u can tune it down an that might be your best bet
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Old 06-02-2012, 02:31 PM   #10
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Originally Posted by 98MUSTANG GT

Ya u can tune it down an that might be your best bet
Sorry y'all but am a bit confused. G-gears said it revs while driving. Not possible if in gear (manual/auto). Idle control is different and should not be confused with AC issues. Dashpot as its called is a PCM function. Changing it is a custom tune requirement. AC should not affect idle so much that it increases idle speed. Idle drops when AC is on, and engine labors while driving due to increased load. I do know for earlier models that functions are vac driven; mine does. No vac no air. What gives?
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Old 06-02-2012, 03:17 PM   #11
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Originally Posted by LAS97GT

Sorry y'all but am a bit confused. G-gears said it revs while driving. Not possible if in gear (manual/auto). Idle control is different and should not be confused with AC issues. Dashpot as its called is a PCM function. Changing it is a custom tune requirement. AC should not affect idle so much that it increases idle speed. Idle drops when AC is on, and engine labors while driving due to increased load. I do know for earlier models that functions are vac driven; mine does. No vac no air. What gives?
Possible because mine does it to while in gear but I got use to it
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Old 06-02-2012, 03:37 PM   #12
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Haha I can't get use to mine. The pull is pretty hard haha I'll be going down a hill in 2 or 3rd and its like a 12 year old girl driving her first stick. Haha it jerks me like I'm scare to give it throttle. The air isn't cold so I will try recharging it
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Old 06-02-2012, 03:43 PM   #13
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Quote:
Originally Posted by GrabbinGEARZ
Haha I can't get use to mine. The pull is pretty hard haha I'll be going down a hill in 2 or 3rd and its like a 12 year old girl driving her first stick. Haha it jerks me like I'm scare to give it throttle. The air isn't cold so I will try recharging it
When u clutch in does it rev up if so keep the clutch held in and it should die down after a couple of seconds an if ur air isn't cold u need to refill it it well still happen after u do but once u use it alot or often it calms down
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Old 06-02-2012, 04:43 PM   #14
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Re: Help fix my problem maybe?

Quote:
Originally Posted by GrabbinGEARZ View Post
Haha I can't get use to mine. The pull is pretty hard haha I'll be going down a hill in 2 or 3rd and its like a 12 year old girl driving her first stick. Haha it jerks me like I'm scare to give it throttle. The air isn't cold so I will try recharging it
Dunno about the first part but if the air isnt cool then recharge it lol....

Las97Gt- Yes and no to a custom tune is the only way you can change the idle of the car. In the held hand tuner you can change it at a certain degree but when I took the car back to the people that did my tune they change the IEC in the PCM? What that means I dunno....But I do agree that the Ac will drop the engine RPM and etc when it cycles on and off.
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