'92 Pontiac Firebird Base (3.1l) - has not much power when accelerating

Asked by Nov 08, 2015 at 08:47 PM about the 1992 Pontiac Firebird Base

Question type: Maintenance & Repair

The engine runs great, spark plugs and wires have been replaced, the Cat
was replaced a few years ago, but when i accelerate it doesn't have much
power anymore and it ends up using more gas then ever. I was getting up
to 25 mpg before, now its at about 15 mpg. I can get it up to highway
speeds, it just feels like something is holding it back.
Does anyone have an idea what it could be, something i can fix or replace
myself? Thanks.

3 Answers

34,535

Do a compression test. Just a guess but does your car have high miles and use oil?

it has 157700 mi, but i don't think it uses a lot of oil, not more than our other car ('04 Durango).

37,955

I am not sure on this year, but Pontiac have a Mas Air Flow valve in a lot of there cars, that can act like a plugged cat.

Your Answer

Add photo

Related Questions

  • i have a 99 pontiac firebird 2 answers

    I have a 1999 pontiac firebird. The exhaust is broke. Today I go out and try to leave the check engine light and reduced engine power light is on. It will start and idle fine but when I put it in ge...

    Pontiac Firebird

    -

    Maintenance & Repair

  • Power loss 1 answer

    I have a 1991 fire bird V6 since I got it running when ever I accelerate it feels like I'm not moving as fast as I should it takes a while to go over 30 mph and the rpms are higher then they should...

    1991 Pontiac Firebird Base

    -

    Maintenance & Repair

  • What's going on with my 97 Firebird 19 answers

    I just recently got this car. For the first week it was running just great, then it started getting harder to start. Then it wouldn't start at all, check engine light came on, tried starting it for ab...

    1997 Pontiac Firebird Base

    -

    Maintenance & Repair

  • firebird shakes violent 2 answers

    It shakes when accelerating . but when I back up it never shakes,no matter how fast I back up, i can coast and sometimes it shakes a little.It shakes when I let off the clutch fast or slow, I dont h...

    1995 Pontiac Firebird Base

    -

    Maintenance & Repair

  • 99 firebird v6 turns over but won't start? 27 answers

    Motor will turn over but won't start, tested the fuel pressure - good, tested the spark to the plugs - good. At this point I'm lost, no engine code or security lock out. Help?

    1999 Pontiac Firebird Base

    -

    Car Customization

Firebird

Looking for a Used Firebird in your area?

CarGurus has 732 nationwide Firebird listings starting at $3,800.

ZIP:

Search Pontiac Firebird Questions

Pontiac Firebird Experts

#1 Samuel Moore
Samuel Moore
Reputation 910
#2 dandyoun
dandyoun
Reputation 760
#3 Justin Hatfield
Justin Hatfield
Reputation 730
View All

Related Models For Sale

Used Chevrolet Camaro
621 Great Deals out of 38,658 listings starting at $2,995
Used Ford Mustang
641 Great Deals out of 36,933 listings starting at $2,800
Used Chevrolet Corvette
339 Great Deals out of 19,714 listings starting at $3,688
Used Ford Mustang SVT Cobra
4 Great Deals out of 247 listings starting at $6,400
Used Pontiac Grand Prix
14 Great Deals out of 3,213 listings starting at $1,995
Used Ford F-150
3,136 Great Deals out of 200,446 listings starting at $1,273
Used Dodge Viper
5 Great Deals out of 332 listings starting at $16,900
Used Porsche 911
139 Great Deals out of 4,325 listings starting at $9,995