So, the long and short. My 1985 Volvo 240 is acting up randomly. Both hot and cold it will randomly rev to around 2500 rpms and sit there for a bit. It does self adjust. After revving high if the car is shut off it will not start again right away. I have replaced the iacv and took apart and cleaned the throttle body. after cleaning the throttle body it was fine for 2 days. This morning upon starting it jumped immediately to 2500 rpms and then would not start again. My next thought is the throttle position sensor. Any advice, I love the car and want to get him back up to snuff.

 

You should post this in the 240 section..

You might get a faster answer....I'm not a mod or anything....just sayin.