I drive a 1992 Pontiac firebird. I have a 305 v8. My car for the past 2 months has been chugging. What happens is when I am driving my service engine light will come on and then a my mufflers will get really loud and then get really stiky and start chugging. It will chug sometimes until it dies but I can restart it most of the time. While my car is chugging it will also accelerate and deaccelerate on its own. My father and I have replaced the throttle postioning system, the m.a.p.s. sensor, carbarator, and spark plugs. My father and I are stumped on what could be causing the problem because it is still chugging and accelerating even after everything we have done. Any help on what it could be, would be awesome.

Asked by Nov 03, 2014 at 10:19 PM about the 1992 Pontiac Firebird Trans Am

Question type: Maintenance & Repair

3 Answers

35,645

Stinky as in rotten eggs? Catalytic Converter! You're describing all the classic signs.

Not rotten eggs, but a heavy gas smell.

20,420

Mark is probably right. However a 1992 shouldn't have a carburetor. It should be fuel injected. Check your fuel filter, fuel pressure regulator, fuel injectors but start with the cat. convertor(s). There may be more than one of them. You could have more than one of these problems at the same time.

Your Answer

Firebird

Looking for a Used Firebird in your area?

CarGurus has 769 nationwide Firebird listings starting at $2,500.

ZIP:

Pontiac Firebird Experts

  • #1
    Samuel Moore
    Reputation
    990
  • #2
    dandyoun
    Reputation
    830
  • #3
    Tom Demyan
    Reputation
    720
View All

Related Models For Sale

Used Chevrolet Camaro
429 Great Deals out of 30,647 listings starting at $1,450
Used Chevrolet Corvette
180 Great Deals out of 19,692 listings starting at $3,000
Used Ford Mustang
585 Great Deals out of 36,177 listings starting at $1,200
Used Ford F-150
2,561 Great Deals out of 198,624 listings starting at $1,500
Used Ford Mustang SVT Cobra
8 Great Deals out of 302 listings starting at $5,799
Used Porsche 911
135 Great Deals out of 5,002 listings starting at $10,850
Used Jeep Wrangler
337 Great Deals out of 17,362 listings starting at $2,995
Used BMW 3 Series
1,094 Great Deals out of 33,530 listings starting at $1,000
Used Pontiac Grand Prix
29 Great Deals out of 2,644 listings starting at $1,449

Used Cars For Sale

2002 Pontiac Firebird Trans Am For Sale
28 listings starting at $6,000
2001 Pontiac Firebird Trans Am For Sale
14 listings starting at $7,575
1999 Pontiac Firebird Trans Am For Sale
11 listings starting at $4,999

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.