check engine light problems?

Asked by May 05, 2014 at 04:49 PM about the 1985 Pontiac Fiero GT

Question type: Maintenance & Repair

check engine light has burnt out twice in last six months and has not been driven that
much.

1 Answer

285

I've heard from a mechanic that the amount of ethanol in gasoline today will cause your oxygen sensor to malfunction. This is why your check engine light keeps coming on.

1 of 1 people found this helpful.

Your Answer

Pontiac Fiero Experts

  • #1
    Steve Neyens
    Reputation
    240
  • #2
    Andrew Welsh
    Reputation
    230
  • #3
    THORNY68
    Reputation
    220
View All

Related Models For Sale

Used Pontiac Firebird
10 Great Deals out of 767 listings starting at $2,500
Used Chevrolet Corvette
174 Great Deals out of 19,334 listings starting at $3,941
Used Chevrolet Camaro
500 Great Deals out of 33,536 listings starting at $1,450
Used Ford Mustang
606 Great Deals out of 39,018 listings starting at $1,500
Used Toyota MR2
23 listings
Used Dodge Charger
380 Great Deals out of 33,529 listings starting at $2,000
Used Porsche 944
98 listings starting at $4,995
Used Mazda RX-7
59 listings
Used BMW M3
30 Great Deals out of 2,176 listings starting at $6,599
Used Pontiac Grand Prix
12 Great Deals out of 2,552 listings starting at $1,750
Used Nissan 300ZX
126 listings starting at $3,995
Used Mercedes-Benz SL-Class
71 Great Deals out of 3,495 listings starting at $3,800

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.