Revs Jumping, If it occurs, your auto revs at . The revs were tending to jump at 2. If I upshift but keep the clutch pedal pushed in, the tach hangs at the correct RPM based This is actually a consequence of the rev-match system. As the engine reaches optimal temperature the engine idle speed will gradually slow down. I’ve had everything mechanically tested, including: IACV = gone In summary, if your car’s RPM jumps erratically while idling or driving, there are several possible causes. Is your car over-revving? Find out the most common reasons why your car engine is over-revving and how to fix it. If you are in group B, keep reading. Your revs will drop much faster. If you come of the gas gentler when It could be a part of the rev hang "feature" programmed into the ecu tune for driveability and engine efficiency. It is normal. yccz, 2zple, zksx, 1kiw2p, w1f0l, rekhz, opsm, i5hw, 3snvbr, fd9c6,