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2005 chevy trailblazer_ls_ext
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i replaced battery because when i went to start my TB it did the clicking and all the lighting was dim like the batt was about to go. Since the morning ive driving around it seemed to work good. the idle is up. Now the problem is when the AC is on the idle drops to almost stalling. Tomorrow I will clean the Throttle body and change the spark plugs. Thank you for all your help.
The low idle with the a/c on is definitely the throttle body being dirty. If I had a dollar for everyone that's ever had this problem . . . :D
 
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