Common questions

Why is my car engine revving in park?

Why is my car engine revving in park?

The idle is controlled by the idle air control valve and if it cannot keep the engine idling it will keep trying to rev the engine up to compensate. A vacuum leak, sensor that has failed, or an EGR system malfunction could potentially be the cause of the erratic engine you’re experiencing.

Why does my car stop when I put it in Park?

If I go with the first method, shifting back into drive, right when I put it in park again it continues to do it and wont stop unless the engine is shut down, which feels terrible. It also will idle low and rough when its in park and not revving up as I said before.

Is it possible to over rev an engine?

Modern vehicles have electronic systems that will not allow you to rev the engine so fast that you will damage it. When the engine’s speed reaches the “red line” on the tachometer, the fuel supply is cut off, so that you can’t over-rev the engine. No problema! LGC July 6, 2016, 3:34am #4

Why does my car rev up at a stop sign?

When I am stopped at a stoplight or stop sign, my car’s engine unexpectedly revs up. If I put it in neutral or park, it subsides. It happens only occasionally, sometimes months apart. I have reported this to Honda on two occasions, and have brought it in for a testing procedure. Both test sequences came up with nothing. I don’t know what to do.

Do you put the car in reverse when the engine is not idle?

As I said in my previous response, don’t ever put the car in drive/reverse while the engine is not at idle. As for your problem, it may be that you have a leaky or clogged PCV valve. It could also be a problem with the idle setting in your ECU, since it only happens when you’re in park/neutral. – Samuel Perron Nov 12 ’18 at 16:21

Is it OK to rev your engine while in Park?

Yes, it’s ok to rev your engine while you are in park as long as the engine has been warmed up. Revving your engine before it’s had time to properly warm up risks damaging the internals of the engine.

If I go with the first method, shifting back into drive, right when I put it in park again it continues to do it and wont stop unless the engine is shut down, which feels terrible. It also will idle low and rough when its in park and not revving up as I said before.

Can you damage your engine by over revving?

Can Over Revving Your Engine Damage It? Yes, there are countless stories online of people that have downshifted their car into a lower gear and accidentally blown up their engine. An engine is designed to be operated at a certain RPM, exceeding that RPM can lead to catastrophic damage to your engine.

What happens when you rev your car to high rev range?

Your engine will be most efficient and use the least amount of gas while at idle. So anytime you rev your engine to the high rev range you will be using more gas than you would if you let your engine idle.

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Ruth Doyle