1992 Toyota camery when I start it the rpm will go up to 2200 then right back down to 750-1000 rpm. The first thing I did was cleaned the idle control valve out and put it back in place. 2nd one was throtle body and the butterfly I cleaned out used starting fluid I think that was the wrong fluid but after I used carb cleaner both of them were real carb up. 3rd I also looked at the hoses for a vacuum leak didn't find one also put a new pvc valve on it. Do you think it could be a pcm unit? Cause there is a few things it does say it could be that cause when you shift it from park to drive the rpms goes up some. Then the cooling fan goes real slow also plus I think it shifts funny but im not sure thou. Where is the pcm unit located at? Maybe the spark plugs are dirty? That's why its idleing rough? Thank you for your time.
Monday, January 13th, 2014 AT 8:16 AM