Iam in Hot Springs Ar......with a a badly missing 460....My scanner shows nothing .....Iam looking for recommendations for a shop to scan my engine beside Riser ford....I cannot leave my MH a few days...
Have you checked all the Vacuum lines? I have not seen this mentioned. Also a bad coolant temp senor if it sends the wrong info to the ECM can cause issues like this on ODB1 systems. The ECM uses the info from this sensor to regulate air mixture. I have had and worked on mostly GM and Saturn ODB1 cars and this sensor especially on the Saturn cars would cause all sorts of running issues.