when my air con is onand im driving and come to a slow down or stop my revs drop and my car cuts out any ideas
franc123,
Feb 11, 2:15pm
The system that compensates for reduced idle speed when the engine is under load, such as when the AC is on has stopped working, perhaps a control valve or actuator.What model/engine!
twink19,
Feb 11, 2:22pm
could be stepper valve
tim8069,
Feb 11, 2:43pm
Likely to be the stepper motor. Try disconnecting the battery in the morning for a while, when the engine is fully cold, then reconnect and start without touching the accelerator. Let the engine fully warm up, leaving it idling the whole time. Don't touch the accelerator for the whole warm up period. This can sometimes help the Mitsi's re-learn their idle profile
richard198,
Feb 11, 10:46pm
Could also be a stuffed AC unit; they get near impossible to turn and effectively stop the engine at low revs.
berg,
Apr 8, 11:08pm
By any chance have you had a flat battery lately!
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