2002 Mazda 626 idle too high with e AC on
Craig’s question:
“My 2002 Mazda 626 idles too high when I turn the AC on. It runs fine with the AC off, but as soon as I turn the AC on, it idles way too high. I was told there are no adjustment screws to set this down. Is this true?”
Answer:
Yes, there are no mechanical adjustments for the idle speed in that car. It’s all controlled by computers. BUT, you may have a simple fix. On those 626’s, the computer often stores erroneous information on AC idle speed. So have a mechanic erase the keep alive memory in the computer (it’s called the KAM memory.) Once this is done, it should reset the AC idle speed to the factory setting. I’ve seen this a lot in Mazdas.
