What causes engine racing at start up?


Asked by Oct 11, 2013 at 04:29 PM about the 2001 Dodge Durango SLT

Question type: Maintenance & Repair

What causes my engine to "race" when I start it?  It will race for about 2-3 min. berfore settling into "quiet" engine mode,  Happens each time car is stopped and started.

4 Answers


is the eng racing or do you hear the fan on the ft. of engine?

4 out of 4 people think this is helpful.

When I start the car the engine noise volume goes up and the rpms rise above "1 1/2" and stay that way for about 30-45 seconds before returning to normal at " 1 " rpm.

2 out of 2 people think this is helpful.

the pcm controls rpm, have you cleaner the throttle body? There is the possibility that there is carbon build up on throttle plate and the idle speed motor. When I do a cleaning, I remove the idle control motor and wash the plunger and the area in throttle body where it goes. What eng. does yours have? The fan on ft. of eng. may be cause of noise as well. open hood and start eng. and see if fan roars, then quietens down. This is pretty much normal. Is ck eng light on? Hope this helps....

2 out of 2 people think this is helpful.
Best Answer

Thank you - I will try that.

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