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


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

Your Answer

Pontiac Grand Prix Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used Chevrolet Impala
535 Great Deals out of 33,172 listings starting at $1,495
Used Dodge Charger
431 Great Deals out of 35,016 listings starting at $2,000
Used Pontiac Bonneville
433 listings starting at $1,500
Used Chevrolet Monte Carlo
7 Great Deals out of 1,248 listings starting at $1,125
Used Pontiac Grand Am
951 listings starting at $2,489
Used Chevrolet Camaro
502 Great Deals out of 31,151 listings starting at $2,495
Used Ford Mustang
457 Great Deals out of 42,833 listings starting at $1,488
Used Nissan Maxima
340 Great Deals out of 20,723 listings starting at $1,175
Used Buick Regal
138 Great Deals out of 6,554 listings starting at $3,995

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
5 Great Deals out of 395 listings starting at $2,500
2007 Pontiac Grand Prix For Sale
4 Great Deals out of 345 listings starting at $500
2006 Pontiac Grand Prix For Sale
429 listings starting at $1,988
2005 Pontiac Grand Prix For Sale
4 Great Deals out of 337 listings starting at $950

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.