Sputter/backfire and sulfur foul smell on heavy acceleration
30

Asked by kevkos92 Oct 05, 2015 at 08:17 PM about the 2000 Pontiac Grand Prix GTP Coupe

Question type: Maintenance & Repair

Changed iac,maf,tps,fuel pressure
regulator,fuel pump, air filter, fuel filter,
csps, egr, oil change, exhaust
work(mufflers) and ignition module. Got the
car to stop stalling on start and runs great
besides odd idle and foul smell on heavy
acceleration. Only things I haven't changed
are plugs wires, coil packs and injectors. I
cant find an evap leak but line from gas cap
to fuel tank are rusty.

3 Answers
30

kevkos92 answered 8 years ago

I do have an aftermarket air intake came with the car when I bought it 2 years ago have never oiled it just changed the cone filter on it about a year ago when I did the first maf sensor. I have gone through 2 maf sensors in the last year the second one about a month ago when I changed the iac , tps, and crank sensor. Also cleaned the throttle body while I was at it but didnt check any of the connections so ill take a tomorrow and get a new gas cap. As far as vacuum leaks I haven't been able to find one under the hood any of the times ive checked but im going to put a stock air filter on it and ill get back with the results. Thanks for the answers guy much appreciated!

2 people found this helpful.
Mark helpful

Your Answer:

Related Questions

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 3 nationwide Grand Prix listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search Pontiac Grand Prix Questions

CarGurus Experts

  • #1
    munron
    Reputation
    8,150
  • #2
    james sparrow
    Reputation
    7,480
  • #3
    Dorian Hendricks
    Reputation
    6,030
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Pontiac Bonneville
2 listings
Used Chevrolet Impala
9 Great Deals out of 128 listings starting at $3,495
Used Pontiac Firebird
20 listings starting at $23,995
Used Chevrolet Camaro
16 Great Deals out of 476 listings starting at $11,999
Used Chevrolet Monte Carlo
7 listings starting at $7,499
Used Ford Mustang
38 Great Deals out of 1,635 listings starting at $7,999
Used Toyota Camry
51 Great Deals out of 1,074 listings starting at $2,500
Used Pontiac Grand Am
2 listings
Used Chevrolet Corvette
32 Great Deals out of 795 listings starting at $15,900
Used Honda Accord
45 Great Deals out of 986 listings starting at $2,995
Used Buick Regal
3 Great Deals out of 22 listings starting at $6,395

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. Content will be removed if CarGurus becomes aware that it violates our policies.