What can be wrong with my car

Asked by Nov 12, 2014 at 09:51 PM about the 1986 Pontiac Grand Prix LE

Question type: Maintenance & Repair

I have a 1986 grand prix with a 5.0 engine  
the problem is that after driving a while the
check engine light comes on and the car
drive sluggish like it's not going fast and
feel funny when pressing the gas pedal but
when I stop at a light a little smoke comes
from the pipes pull off a nice little cloud.
When I cut the engine off it runs on sounds
like a bunch of fireworks and I smell burned
gas that burns the nose a little how can I fix
this problem

2 Answers

65,555

Sound,s like fuel over load,i think engine light may be on because,your O 2 sensor,s are bad,and and telling the ecm to feed more gas to engine,Or your cadilac converter may be stopping up,go have the code,s read for free at part,s store to confirm 02,sensor

Don't have a catilac converter note when I cut the engine off and back on the check engine light go off but thanks I'll try that tomorrow

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