Idle problem 03 Trailblazer

External Since: Jun 24, 2007 Posts: 79

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External Since: May 09, 2007 Posts: 5

On Jan 8, 1:12 pm, Meat Plow wrote:
> When the air conditioner compressor kicks in, the idle drops below 400
> RPM. It appears that the computer figures out the engine is about to stall
> then throttles up instead of kicking the idle up as soon as the
> compressor clutch engages. This lag results in an up/down idle and usually
> results in a stall. There is no lag when I step on the pedal. I noticed
> this problem after I replaced the battery. 60k miles, engine runs
> perfectly otherwise and the air works fine.
>
> Ideas?

how long has the new battery been in? Also are you absolutely sure
it's fully charged? jp