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#1 |
Registered User
Join Date: May 2007
Location: East Haven, CT
Posts: 882
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Air Conditioning causing truck to stumble
Since I've finished the suspension work on my truck, I've started driving it again. It's had these symptoms before as well. When I turn the a/c on, the truck stumbles, and occasionally stalls out at lights.
Fuel pressure seems fine at 13 psi. Truck does not do this when the a/c is off. System blows nice and cold. Is there some type of switch that isn't working which bumps up the idle with the a/c? 305 TBI engine.
__________________
87 Chevy 2wd SWB: 305/700r4 Dual Exhaust, K&N Filter, Injector Pod Spacer, TBI Spacer, Belltech Front Sway Bar, Corvette Servo, Western Chassis 4/6 and c-notch |
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#2 |
Registered User
Join Date: May 2007
Location: East Haven, CT
Posts: 882
|
Re: Air Conditioning causing truck to stumble
I just did some searching and learned the IAC controls idle as well as when the A/C is turned on, it is suppose to tweak the idle. Also, I learned it always different cold idle settings which I forgot to mention, the truck runs like POO for a few minutes when started cold.
I'm going to try cleaning it with some TBI electrical safe cleaner.
__________________
87 Chevy 2wd SWB: 305/700r4 Dual Exhaust, K&N Filter, Injector Pod Spacer, TBI Spacer, Belltech Front Sway Bar, Corvette Servo, Western Chassis 4/6 and c-notch |
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#3 |
Registered User
Join Date: Jun 2010
Location: Farmington,CA
Posts: 345
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Re: Air Conditioning causing truck to stumble
Yeah my moms 92 Burban had the same problem and I replaced the IAC (Idle Air Control). I will get a pic of the location if you need?
__________________
My last name is Chiono pronounced key-ono even if my grammar teacher told me Ch dont make a K sound 1995 ![]() 1986 ![]() 1982 ![]() 1962 Chevy 283 4 speed long step 2wd 2 OWNER GONE!! |
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#4 |
Registered User
Join Date: May 2007
Location: East Haven, CT
Posts: 882
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Re: Air Conditioning causing truck to stumble
Thanks Chionos. I know where it's located. I just have to buy some electrical safe TBI cleaner since all I have here is old carb cleaner and it says right on the can not recommend for EFI.
I'll post up how it worked!
__________________
87 Chevy 2wd SWB: 305/700r4 Dual Exhaust, K&N Filter, Injector Pod Spacer, TBI Spacer, Belltech Front Sway Bar, Corvette Servo, Western Chassis 4/6 and c-notch |
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#5 | |
Registered User
Join Date: Jun 2010
Location: Farmington,CA
Posts: 345
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Re: Air Conditioning causing truck to stumble
I pulled this out of one of my threads
Quote:
__________________
My last name is Chiono pronounced key-ono even if my grammar teacher told me Ch dont make a K sound 1995 ![]() 1986 ![]() 1982 ![]() 1962 Chevy 283 4 speed long step 2wd 2 OWNER GONE!! |
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#6 |
Registered User
Join Date: Jun 2010
Location: Farmington,CA
Posts: 345
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Re: Air Conditioning causing truck to stumble
Good Luck
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__________________
My last name is Chiono pronounced key-ono even if my grammar teacher told me Ch dont make a K sound 1995 ![]() 1986 ![]() 1982 ![]() 1962 Chevy 283 4 speed long step 2wd 2 OWNER GONE!! |
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#7 |
Registered User
Join Date: Mar 2008
Location: Tullahoma, TN
Posts: 406
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Re: Air Conditioning causing truck to stumble
Well???... How did it work??
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#8 |
Registered User
Join Date: Jun 2010
Location: Farmington,CA
Posts: 345
|
Re: Air Conditioning causing truck to stumble
__________________
My last name is Chiono pronounced key-ono even if my grammar teacher told me Ch dont make a K sound 1995 ![]() 1986 ![]() 1982 ![]() 1962 Chevy 283 4 speed long step 2wd 2 OWNER GONE!! |
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#9 |
Registered User
Join Date: Dec 2009
Location: Snohomish, Washington
Posts: 1,187
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Re: Air Conditioning causing truck to stumble
I have the same problem, I started freaking out at first.
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