Car will start and drive fine..for example i can get in drive to the store and when i get back home and put the car in park the engine rev's up an idles around 2100 rpm and wont go back down till i shut off the car. It doesn't do it when i start the car or when i stop at a light only when i go to park the car somewhere....what could this be ???!!!! It's driving me crazy. It's a 1991 Ls 400. Thanks for any reply's guys !!

 

Oh god no one ??!! (Is it cause i'm a bronco fan lol !!) Someone out there has got to have an idea i can't afford to go back to the dealer again !!!

 

It might be your TPS going nuts