AC - engine saurge S40 1.8 auto petrol
Yeah sorry to drag it back up but there was no clear resolution.
AC on then engine surge noticeable when driving slowly - actually effects speed and auto gear selection!
Turn AC off and problem gone.
How can ac clutch engagement effect throttle/rpm I don't understand.
It takes some current and as only a 1.8 I would almost expect the opposite.
Is the ecu trying to over compensate for this?
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