Rough idle
08-14-2022, 01:20 PM
#21
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I wanted to correct it because millions of folks are convinced that all cars have Idle Air Control Valves. They are a frequent problem on cars that have them.
On the HHR the computer controls the air flow by adjusting the throttle butterfly using data from the MAP, MAF and #1 O2 sensor.
Rough idle and stalling is usually from forgetting to reconnect the MAF after a filter change or a very dirty throttle body. The disconnected MAF usually causes several codes that will light the CEL.
On the HHR the computer controls the air flow by adjusting the throttle butterfly using data from the MAP, MAF and #1 O2 sensor.
Rough idle and stalling is usually from forgetting to reconnect the MAF after a filter change or a very dirty throttle body. The disconnected MAF usually causes several codes that will light the CEL.
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