Is it okay to rev your engine to warm it up?

The short answer: Yes, you can rev your engine to make it warm up faster. One big caveat to that answer is that it is highly recommended you don’t do that. With modern gasoline vehicles, most manufacturers recommend you start the car and immediately start driving.

How long should you wait for your engine to warm up?

It takes five to fifteen minutes for your engine to warm up while driving, so take it nice and easy for the first part of your drive. Performance cars often enforce this for you with a graduated rev limiter that doesn’t allow you to use the car’s full RPM range until the engine is up to temperature.

Why you shouldn’t rev your engine?

Revving the engine won’t speed up the process. Cold revving causes abrupt temperature changes that create stress between the engine’s tight-fitting components. Simply give it 60 seconds before you get on the road, and everything will have warmed up for reliable performance.

Is it bad to rev your engine while in park?

Answer is….its ok to rev you engine in neutral/park. Just not when its cold and dont hold it on rev limiter! Try not to, because free revving can damage the engine.

Is the warm engine undriveable when cold?

This time it started with an idle around 1500rpm, slowly dropped to 1k, then quickly cycled back up to 1500. It did this for a minute or two, then dropped down to the rough idle, which seems to run between 500-800, kind of hunting around. Is there a key sequence that is used to help it learn? The car is undriveable when warm.

Is there a way to re-learn a warm engine?

There is no set method to re-learn. It will over time on it’s own, but the proper method is to clean the throttle out fully then disconnect the battery if the adaptation needs to be reset. Otherwise it is just the drive and wait game.

What to do when warm engine runs rough?

If there are stubborn deposits you can use a scotch brite pad, wire brush, etc to knock them loose and then wipe it out again with a rag soaked in cleaner. Do not spray anything into the throttle body. Remove the IAC and with it out of the vehicle use brake cleaner to spray directly onto it then wipe it off. Let it dry and reinstall.

What happens when engine heats up to operating temp?

As the engine heats up the ring-cylinder mate becomes looser so that the engine will run smoother and easier…but if there is too much wear the combustion gases will begin to blow by the ring-cylinder surfaces and will cause each stroke to lose power.

What causes a car to miss when warm?

So saying this problem is caused by a small vacuum leak and the system its self compensates while car is cold would be fine if we only have issues at idle, but we have them at speed. I am still thinking of a mixture problem that turns into a flat out miss when warm.