I have a 1996 Grand Cherokee and the other morning while driving home from work I noticed the engine was reving pretty high and was about 3K RPMs. I slowed down some to see if the RPMs would drop and it did but not much. I had the side mirror defrost on because there was still some frost on the side mirrors. I turned off the side defrost and the RPMs immediatley dropped to 2500 and then eventually to around 2200. Is this something I should be concerned about? Obviously I can turn off the side mirror defrost once I start driving but are there any other complications or any underlying problems I should be worried about?

thanks

12/29/2006 1:53:24 AM

was the engine actually revving that high or was the tach just reading that high? bad grounds arent uncommon on those

12/29/2006 7:55:11 AM

yea the engine was revving, thats what freaked me out.

12/29/2006 9:58:40 AM

sounds like your tranny was slippin till it warmed up

12/29/2006 12:27:50 PM

uh oh, another Chrysler transmission is about to shit on itself

12/29/2006 12:40:25 PM

surprise surprise

12/29/2006 1:02:36 PM

Was the engine warmed up?

12/29/2006 1:18:52 PM

^^^ That's the last thing I need right now.

^

It had been running long enough to melt the frost on the windshield and drive 5 miles, so not really. Should I let it warm up longer before I drive?

12/29/2006 4:07:46 PM

Some powertrain control modules prevent torque converter lockup until the engine is warm. But if that was your case, then you should have experienced it before.

12/29/2006 4:11:25 PM

Ive noticed the high RPMs(3K) while driving but this is the first time I was able to figure out what was doing it, at least in this case.

12/29/2006 6:13:24 PM