2004 Chevy Trailblazer 6 cyl Two Wheel Drive Automatic 65,294 miles
I have a 2004 Chevy Trailblazer which has ben great withnormal maintenance. My bettery was hard hard cranking and needed to be replace, so I stopped by the local parts store and bought a new battery last weekend and replaced my battery.
Here is where the problem started, that night after changing my battery, I went to use the defroster. When the A/C compressor engases at idle in park or neautral every 5 to 10 seconds the idel drops and will either almost stall the engine or occassionally does stall the engine. This happens in drive as well, and when driving, since the RPM drop and come back up, the vehicle surges at low speeds. The RPM drop only occurs when any A/C component is on (A/C, defroster, or re-circulation), when just the vent is on, the RPM does not drop and the engine run fines.
I saw another person posted with the exact same question on your site, with the exact same make and model vehicle and approximately same milage but I could not find an answer (see link to the other question: http://www.2carpros.com/forum/a-c-and-electrick-vt66495.html )
Please help me with this question, it seems like this is not a one of a kind problem.
Thank you in advance!!!
Saturday, January 26th, 2008 AT 8:52 PM