My new used Vehicle

I just bought a 2008 Chrysler Aspen with 44000 miles. We drove it the first two days with no problems. On the third day upon start up the RPM’s reved up between 1500-2000. Once the truck is shifted into drive it goes right where it should be. I am wondering what could be causing this to happen. Oh sourse we took it back to the dealer and they can not figure it out because it only happend on the first start up of the day. Hummm any ideas guys?

Did you get this vehicle inspected by your mechanic before you bought it? If not, you need to do that right now. You can’t trust the dealership that sold it to you. They have a conflict of interest.

Actually, 1,500-2,000 RPMs with a cold engine sounds like it is within a reasonable range to me. However, you still need to have it checked out by a mechanic who is working for you, not the dealership.