Additional info........just received a call from the dealer service mgr. .... Chrysler says quote " They have heard of this and know of this problem....."BUT" they don't know what it is...or what to do about it.....and they have no fix for it. So I will have to live with it at the present"........ BTW the more I drive it the worse it gets ....... So if you have been think about a new Nitro.......You might want to think twice before buying a Nitro R/T....... Until they get a handle on this.........As they say "Buyer Beware" 