When I engage my cruuse control, at any speed, but obviously at quicker speeds like 55 my rpms go up about 500 and then back down. Why is it doing that?
If this is happening while you're driving it could be normal. The cruise control acts like an automatic throttle to maintain your set speed. On some older models the accelerator pedal will actually move up and down as the car speeds up or slows down to maintain your set speed. HTH. -Jim
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