No power with gas pedal all the way to the floor. New coils, new fuel filter, new throttle body sensor, injectors, worse power than before the new coils. Anybody have any suggestions. Been suggested to get fuel pressure unit checked and possible getting another computer. Any help please I am desperate

Asked by Sep 07, 2014 at 05:58 PM about the 1999 Pontiac Grand Am

Question type: Maintenance & Repair

No power - gas pedal all the way to the floor.  New fuel filter, throttle body sensor, new coil
packs, thermostat, fuel injectors from the salvage yard, new plugs - help

4 Answers

5,505

Have the fuel pump checked to insure it is delivering fuel at the right pressure and the injectors match its pressure capability.

4,935

You don't mention any trouble codes? Not a big fan of replacing parts until the problem goes away. What was the original problem? If you have a bad crank sensor or TPS the engine will respond the way you describe, but there are also dozens of other issues that can cause the engine to have no power.

We had the same problem and our mechanicfound at last it was the air flow sensor!!!! Runs well now.

remove the O2 sensor before the cat. by the exhaust manifold and if the vehicle runs much better there is a clog in the exhaust system, most likely the cat.

Your Answer

Grand Am

Looking for a Used Grand Am in your area?

CarGurus has 955 nationwide Grand Am listings starting at $2,489.

ZIP:

Pontiac Grand Am Experts

  • #1
    tenspeed
    Reputation
    7,980
  • #2
    John Saffrahn
    Reputation
    1,630
  • #3
    Tom Demyan
    Reputation
    1,590
View All

Related Models For Sale

Used Pontiac Grand Prix
14 Great Deals out of 2,447 listings starting at $950
Used Pontiac Firebird
6 Great Deals out of 740 listings starting at $3,988
Used Ford Mustang
454 Great Deals out of 42,974 listings starting at $1,488
Used Chevrolet Camaro
510 Great Deals out of 31,320 listings starting at $2,495
Used Chevrolet Impala
540 Great Deals out of 33,339 listings starting at $1,499
Used Toyota Camry
1,118 Great Deals out of 77,524 listings starting at $1,400
Used Jeep Grand Cherokee
947 Great Deals out of 67,996 listings starting at $950
Used Pontiac Bonneville
438 listings starting at $1,500
Used Chevrolet Malibu
1,089 Great Deals out of 57,672 listings starting at $995
Used Honda Accord
900 Great Deals out of 79,951 listings starting at $1,295

Used Cars For Sale

2002 Pontiac Grand Am For Sale
99 listings starting at $2,489

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.