Why does my car drop revs in idle?
This may be a sign of a failing idle air control valve. In cases where this valve is clogged or is failing, your vehicle will stall instead of slowing to an idle after the release of the throttle. I recommend having a professional replace your idle air control valve.
Why does my car Rev by itself when idle?
It sounds like you may have a dirty or failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at idle.
What to do if your car Idles without an accelerator?
I jacked the car up and emptied the oil out before removing the idle control valve, cleaning it with petrol & WD40 and then putting it back on and putting new oil in. That was in June and it’s been fine since, although the engine does idle at about 1.5k when it’s cold but it’s an old car so it won’t be perfect.
When does my car stop revving without the accelerator?
Mine hangs revs at about 1500rpm when clutch is depressed sometimes. Will either drop to idle on its own after a few seconds or just sorts itself out when you move off again. Had it checked, ecu reset, no joy.
What does it mean when your engine revs up?
If your engine revs up as you press down on the accelerator but your vehicle doesn’t accelerate as per usual or as you would expect, it’s a troublesome sign that can lead to a full-blown transmission failure. Transmission slipping, or gears slipping, is one of the most common transmission problems on both manual and automatic transmissions.
It sounds like you may have a dirty or failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at idle.
I jacked the car up and emptied the oil out before removing the idle control valve, cleaning it with petrol & WD40 and then putting it back on and putting new oil in. That was in June and it’s been fine since, although the engine does idle at about 1.5k when it’s cold but it’s an old car so it won’t be perfect.
What happens to the engine rpm when you accelerate?
When you accelerate, the engine RPM increases, and as you let off the gas, the RPM slowly returns to the normal idling speed with the help of the idle air control valve making the transition from a higher RPM back down to idle speed while adjusting the air/fuel ratio constantly to allow this to happen smoothly.
What causes a car to rev without the accelerator?
Is it petrol or diesel? Assuming the floor mats are not holding the accel pedal down, and if there is a throttle cable, it is not sticky, then petrols will increase the revs with excess air, diesels with excess fuel. Both will have diagnostics available.