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

37,705

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

Not rotten eggs, but a heavy gas smell.

22,360

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 681 nationwide Firebird listings starting at $3,695.

ZIP:

Pontiac Firebird Experts

  • #1
    Samuel Moore
    Reputation
    1,020
  • #2
    dandyoun
    Reputation
    840
  • #3
    Tom Demyan
    Reputation
    780
View All

Related Models For Sale

Used Chevrolet Camaro
238 Great Deals out of 28,794 listings starting at $1,800
Used Chevrolet Corvette
99 Great Deals out of 15,305 listings starting at $3,900
Used Ford Mustang
253 Great Deals out of 36,699 listings starting at $2,500
Used Ford Mustang SVT Cobra
4 Great Deals out of 225 listings starting at $5,977
Used Ford F-150
2,316 Great Deals out of 214,998 listings starting at $1,300
Used Pontiac Grand Prix
5 Great Deals out of 1,797 listings starting at $2,500
Used Dodge Viper
3 Great Deals out of 245 listings starting at $29,000

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.