89 grand prix 2.8l.when i turn the key it wont turn over and i noticed gas on the ground. come to find out its coming out of the throttle body. seems like all the injectors are pumping fuel at once.

20

Asked by Jan 21, 2014 at 08:24 PM about the 1989 Pontiac Grand Prix LE

Question type: Maintenance & Repair

5 Answers

18,985

a vacuum controlled fuel pressure regulator has a vacuum hose and a diaphragm is inside to regulate. if diaphragm splits it sends fuel down the hose to intake. excessive fuel will block piston, you cannot compress a liquid

1 out of 1 people think this is helpful.
58,795

Once you get the gas out of the cylinders you'll need to replace the spark plugs. They're gas fouled now. HTH. -Jim

1 out of 1 people think this is helpful.
20

so the regulator is probably bad?

1 out of 1 people think this is helpful.
20

the amount of gas that came out was unbelievable. i opened the throttle body and it poored out

1 out of 1 people think this is helpful.
58,795

Either the regulator is bad or you've got a fuel injector(s) that's stuck open and allowing gas to just pour out when the fuel pump comes on. Also pull the vacuum line for the EVAP system at the intake. If the purge valve is stuck open that'll pull gas up into the intake as well. HTH. -Jim

Your Answer

Add photo

Related Questions

  • why would a car not start if verified to have full spark and full fuel pressure. It turns over and cranks just fine 18 answers

    I have an 07 grand prix, car just suddenly dies while driving, no stalling or anything, its as if i turned the key off. Its random but usually only does it when its above 85 degrees or so, or hotter,...

    2007 Pontiac Grand Prix Base

    -

    Maintenance & Repair

  • Reduced engine power on a 2008 Grand Prix 75 answers

    I have a 2008 Grand Prix, that worked great until last march when i put it in the ditch. it got all fixed from that. But just this past week i was driving it and it came up with REDUCED ENGINE POWER...

    2008 Pontiac Grand Prix Base

    -

    Maintenance & Repair

  • 2004 Pontiac Grand Prix Ask me any questions 33 answers

    I have totally replaced and rebuilt this car. I have experienced some major obstacles and solved them. I have experience with this year model Grand Prix. I may be of some help to others.

    2004 Pontiac Grand Prix GTP

    -

    Maintenance & Repair

  • Car turns off randomly.. 24 answers

    I have a 2002 pontiac grand prix and it has been acting crazy. First, the RPM gauge will jump erratically, my car revving and slowing down with it. Then, it sputters, then I lose my accelerator all ...

    2002 Pontiac Grand Prix

    -

    Maintenance & Repair

  • What is the max milage that a Grand Prix can get? 44 answers

    My grand prix is a 99 and it has 119,000 miles on it. How much longer can it go?

    1999 Pontiac Grand Prix 4 Dr GT Sedan

    -

    Maintenance & Repair

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 3,814 nationwide Grand Prix listings starting at $900.

ZIP:

Search Pontiac Grand Prix Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 3,870
#2 Tom Demyan
Tom Demyan
Reputation 2,570
#3 munron
munron
Reputation 2,060
View All

Related Models For Sale

Used Pontiac Bonneville
8 Great Deals out of 669 listings starting at $995
Used Pontiac Grand Am
1,699 listings starting at $1,000
Used Chevrolet Monte Carlo
13 Great Deals out of 1,701 listings starting at $2,000
Used Ford Mustang
583 Great Deals out of 41,215 listings starting at $1,699
Used Chevrolet Camaro
475 Great Deals out of 39,921 listings starting at $3,499
Used Pontiac Firebird
18 Great Deals out of 808 listings starting at $3,000
Used Honda Accord
1,084 Great Deals out of 76,808 listings starting at $1,395

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
14 Great Deals out of 472 listings starting at $900
2007 Pontiac Grand Prix For Sale
519 listings starting at $1,997
2006 Pontiac Grand Prix For Sale
3 Great Deals out of 638 listings starting at $1,550
2005 Pontiac Grand Prix For Sale
458 listings starting at $5,900