Quote:
Originally Posted by thunderlights
Sometimes when the ac is on and im idling the revs keep bouncing between 650 and 800 over and over and over again. Same issue as you?
|
That part is normal. The A/C compressor requires quite a lot of electrical power, so the engine load sensor adds a tiny notch of throttle to pick the revs up, otherwise the drain on the alternator would stall the engine, potentially.
My issue is when the A/C cuts out and the revs return to 650rpm they dip much lower causing the engine to vibrate.
On my way home last night it had a tffy fit at a set of lights. Revs dropped to below 500, then the car lurched and the revs jumped to 1000, then fell back to 500, then jumped to 1000 again, did it three or four times in a row before settling again, just before the A/C kicked in again and it all started over. Thankfully it's not normally that bad.