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2002 chevy trailblazer_lt
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25 Posts
Discussion Starter #1
My wife's 2002 Trailblazer started a high idle last Friday, we were having snow so she turned on the defrosters which of course turns on the A/C compressor, idle kept surging from 600 rpm to 1500 rpm, up and down like every 10 seconds, almost rear ended someone at a light because it surged as she was about to stop.
This only happens when the A/C compressor is running.
Any ideas ?
 

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Registered
2002 chevy trailblazer_lt
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25 Posts
Discussion Starter #2
Update:
Took it to my local repair shop and after checking it out turns a coil was going bad, replaced the coil and all is good now
 
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