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PT idles low and seems like it's going to die with AC on

 
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  #1 (permalink)  
Old 15 Aug 2007, 01:49 pm
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Default PT idles low and seems like it's going to die with AC on

Hello, hope you can help me here.
My 04 PT Cruiser runs like a charm without the AC on. When I turn the aforementioned component (the AC) then the car idles low and feels like like it needs a tune up or some kind of fuel injector cleaner (I have added two of these in the last week... hasn't helped.)
My mechanic said it was the dryer and changed it, worked fine for one day, but this morning when I was about to go to work, it started idling low and wanted to die on me with the AC on (so of course I had to drive without turning on the AC.)
Any ideas?
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Old 15 Aug 2007, 02:12 pm
quicksilverdon's Avatar
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Default Re: PT idles low and seems like it's going to die with AC on

There's an IAC (I think it's Idle Air Controller) servo that should up the rpms when A/C is turned on - sounds like that's your problem. Does the A/C work okay? Reason I ask is why would mechanic look at the A/C when your problem is the idle?
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Old 15 Aug 2007, 02:48 pm
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Default Re: PT idles low and seems like it's going to die with AC on

Thanks for replying.
AC WAS working well until the morning I took my Cruiser to my mechanic (it stopped cooling that day.) He said that the dryer had a leak and he replaced that. AC is now working (cooling) but it does mess up my idle every time I turn it on thus I have to drive my Cruiser without AC (hot!!!)
Thank you for replying.
If you think it could be something else let me know.
BTW, he mentioned it could also be a sensor... what do you think?

Last edited by churdiales; 15 Aug 2007 at 03:00 pm.
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Old 20 Aug 2007, 08:53 am
quicksilverdon's Avatar
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Default Re: PT idles low and seems like it's going to die with AC on

There has to be a signal that tells the IAC that A/C is on - on a normal PT (one without a problem), when you turn on the A/C at idle, the idle speeds up. I don't know if it's a sensor, it's probably a connection (wire) from the A/C clutch to the IAC. Sure sounds like that's it.
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nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge."
Isaac Asimov"

'05 Limited Turbo Lite, (Silver, of course)4-wheel ABS, Sunroof, Spoiler. Mods: E&G Classic grill, K&N FIPK, BTG duals, rear lowered 1.5", LED washer lights, $20 catch can, Aoogah horn, Weatherflectors, Sunroof Deflector, Fuzzy Dice, rear logo flames, rear pinstripe graphic, Gen3 Taillights, rear sway bar, hood struts, Strut bar.
Traded in '02 Silver Touring Edition w/87,000 miles
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Old 20 Aug 2007, 02:58 pm
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Default Re: PT idles low and seems like it's going to die with AC on

What about the fans?
Could they be malfunctioning and thus causing compressor to overheat causing then a low idling and a feeling that the car wants to die?
I really appreciate your help...
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Old 29 Aug 2007, 09:16 pm
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Default Re: PT idles low and seems like it's going to die with AC on

UPDATE: if anyboday can help, please, please reply...
I changed the IAC valve, had a tune up, did a fue injection (flush/cleanup?) and NOTHING worked... car still idles low and seems like it's going to die when A/C is on... especially when cold.
IDEAS? PLEASE?
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Old 30 Aug 2007, 09:01 pm
03TurboGT's Avatar
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Default Re: PT idles low and seems like it's going to die with AC on

Mine does the same thing but it never dies. As long as the A/C works and it doesn't die, I aint screwin with it
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