- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Engines rarely idle at the same rpm all the time. Its normal for changes to occur, especially small ones. Too many variables that can effect such a small change to list. Its no an issue to worry about.
The vehicles computer will adjust the idle according to how the manufacture programmed it
After about one mine or so, the idle on most vehicles comes down to approx 750RPM, generically speaking
When you put the car in gear,assuming it is an automatic, the rpm will drop a 100 at most & may be adjusted by the computer, just as it does when you put the A/C on. That is to compensate for the change in engine load
You should be waiting for the rpm to come down to 650 to 800 & then a couple more minutes for some temp to come up, before driving off. In cold weather wait at least 5 min or more
I think your vehicle is not working correctly, or you not explaining it in a way I understand what answer you want
Yes, sounds like the idle speed is too high. If you keep driving like that, you will fry the torque converter / turbine. Since idle is computer controlled, you will have to take it for service tune up. There is one possibility that the rich, high rpm idle used for cold start is not disengaging properly after the engine warms up. Air conditioning will raise the idle speed by a couple hundred rpm, so avoid using it until you have the problem fixed. BTW.....warm engine rpm in idle, and neutral should be around 700-800. Anything over 900-1100 will result in a hard shift into 1st gear and dragging at stop lights.
The problem is in the idle air control motor. It is mounted on the throttle body with two bolts, you can pull it off and make sure it is not caked with carbon also check where it mounts on the throttle body and make sure it is not caked with carbon.