I have a 2008 Dodge Avenger. Last week it was in park and the RMPs reved up to 4 by it's self. I added some fule injector cleaner thinking that might help but today it is still doing it. The only diffrence is that now it sometimes will die. Any suggestions?

Thanks for any help you can supply.
D2008

 

You need to scan it for codes. Sounds like a TPS or throttlebody issue