Close
I need help code 33 comes up but it not map senser cause i changed it
1991 Pontiac Grand Prix

I need help code 33 comes up but it not map senser cause i changed it

(1991 Pontiac Grand Prix)
I have changed about all the sensers, code 33 comes up and i have changed the map senser checked the converter. It seems to run good wen i put it to the floor but if not it chugges and runs bad. the check engine light goes off wen its full throtle, any ideas?
1 answer & 1 comment
Popular Answer
on January 12, 2010
Check the vacuum hoses from the MAP sensor. Check the electrical connections at the ECM. How is the vacuum signal to the MAP sensor? How is the signal from the MAP sensor at the ECM? Is it within the spec from GM?
Sign in to reply
on January 12, 2010
I checked the vacum to the map senser it has good vacum, what is the signal supposed to be?
Check Engine Light Diagnosis
$88 - $111 Learn More
on January 12, 2010
Check the vacuum hoses from the MAP sensor. Check the electrical connections at the ECM. How is the vacuum signal to the MAP sensor? How is the signal from the MAP sensor at the ECM? Is it within the spec from GM?
Sign in to reply
on January 12, 2010
I checked the vacum to the map senser it has good vacum, what is the signal supposed to be?

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
Not my car,girlfriends,and i believe those idiots at autozone sold her a camshaft sensor which is totally different.
2000 pontiac grand prix stuck in neutral