1991 Chevrolet Suburban Support Question
1991 Chevrolet Suburban Support Question
Find answers below for this question about 1991 Chevrolet Suburban.Question posted by csaprince on July 24th, 2012
Air Conditioning/power Problem
When I turn on my A/C warm air blows out and I have power fluctuations. I notice my compressor turns on an it appears to be working. I don't have any power flucations when the A/C is off. What could be causing this?
Current Answers
Answer #1: Posted by roadrunnertim on July 24th, 2012 10:53 PM
roadrunnertim
Member since:
May 9th, 2012 Points: 1,071,190
Member since:
May 9th, 2012 Points: 1,071,190
The power fluctuates when the A/C is on because the compressor clutch plate engages and disengages to regulate the temperature of the Freon in your A/C. When the clutch engages, there is more resisitance for the A/C belt, which is driven by the crankshaft pulley. More resisitance on the crankshaft pulley means less power for you to have to accelerate quickly.
Now if it fluctuates constantly, that means your clutch may be acting up or it cannot do it's job because you need more Freon in the system. That may be why it is coming out warm. Not enough Freon in the A/C will prevent it from compressing the gas enough to cool the passenger compartment.
Bottom line, be sure you have enough Freon in the system. If you are sure you do, then the clutch on the A/C compressor is going bad and needs to be replaced.
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