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#1
07-07-2008, 10:42 PM
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AC causes low idle / stall
I'm driving my sister's car while she is in California since it gets twice the fuel mileage that my truck does. 1993 Toyota Celica GT with a manual transmission that runs great, except when the AC is turned on. Engaging the AC causes the car to idle very low (200-400 RPM), which pretty much stalls the car. If the AC is turned off, the RPMs jump back up to normal. I have posted this in the Toyota section, but there's not much activity over there and I assume the problem would be the same whether it's a car / truck of almost any make. Maybe the AC relay is not sending a signal to the computer to add more throttle when the AC is engaged? Seems like a simply fix, just can't put my hands on it right now. Thanks for any help, its nice to have AC in Georgia during the summer months.
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1998 Silverado 2500HD 5.7L - 4x4 w/ Eaton Locking Diff 348,000 MILES 1993 Silverado 2500 5.7L - 4x4 w/ Eaton Locking Diff 449,000 MILES 
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#2
07-08-2008, 01:34 AM
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Re: AC causes low idle / stall
A buddy of mine had the same issue on a Camry (sp ?) and the shop I sent him to clean the TB and problem solved.
//2000CAYukon
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#3
07-11-2008, 04:25 PM
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Re: AC causes low idle / stall
I've seen that on a couple toyotas, the IAC being bad or carboned up will cause it too.... cleaning it is implied with cleaning the throttle body, but I just wanted to add that.
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'04 Cavalier coupe M/T 2.2 Ecotec Supercharged 14 PSI boost, charge air cooler, 42# injectors Tuned with HP Tuners Poly engine/trans/control arm bushings Self built and self programmed progressive methanol injection system
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