Question about 2004 Mazda 6
I recently disconnected my battery to clean the terminals. When I reconnected it, the car rough idled (as expected). However, after two weeks of driving, the problem never corrected itself. So I disconnected the battery again, and let the car idle in park for 5-10 minutes after reconnecting it, in an attempt to let the system "relearn" the proper idle. However, the problem still exists. My car continues to idle roughly while stopped at lights (and in Park) and sometimes makes a spastic drop to <500 RPM while idling at lights, before going back up to 750. It only seems to happen when the car is warm. Any ideas?
The first thing to do is not set up the idle speed, but to set the Idle mixture screw to lean best idle setting. First, turn in the mixture screw until the engine dies or runs worse, then back out the screw (recommend turning ¼ to ½ turn at a time). The engine should pick up speed and begin to smooth out.
The battery has nothing to do with the idle speed
Posted on Apr 09, 2017
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Posted on Jan 02, 2017
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