1991 Chevrolet Cavalier Q&A
1991 Chevrolet Cavalier Question: Wheres the emission sensor switch located ?
Take it to a shop there in Potwin, you don't have a clue. - ProfessorG
Emission sensor switch , is located on a printed circuit board inside the PCM , and is triggered on when various inputs from other sensors are 'out of range' or it is determined that they have a performance problem. I have found 'GREEN JELLY' brand throttle plate cleaner and lube , helps with avoiding some false inputs , from throttle position sensor , at times. - ziptie12