Question about 2004 Pontiac Grand Prix

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2004 grandprix gt has this issue where it will only start if given alittle throttle

I have replaced the fuel filter and pump, ran codes on the car many times, yet still when you start the car you have to give it alittle gas to get the car to start.

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  • Pontiac Master
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Check the throttle position sensor adjustment .Check for correct idle speed sensor. Check MAF sensor. If you have replaced any item with non genuine item it is possible that the cpu is having trouble reading the settings as they are different to genuine settings. While there are no fault codes showing the settings may be at max or min and the codes will not show up.

Posted on Apr 21, 2013

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Posted on Jan 02, 2017

  • 611 Answers

SOURCE: how to replace fuel pump on 95 pontiac grandprix se

you got drop the gas tank remove retainer ring on the top of the tank n pull the pump out i hate doing this kind of job good luck

Posted on Jun 16, 2008

ourhowse
  • 2007 Answers

SOURCE: car idles rough and stalls

Have you ever changed the fuel filter? If it's not that, and it's not a vacuum leak, it is probably your idle air control valve.

Posted on May 08, 2009

Skorpyo
  • 133 Answers

SOURCE: 1996 2.2 liter. Starving for fuel

There are a few other things taht could be causing fuel starvation. First of all, did you pull the injectors and clean out the individual filters? There are small, conical screens inside the top of each injector, and they could be clogged. Second, There could be some carbon build-up on the intake valves, which would act like a sponge for the fuel after initial start-up. A can of BG44K fuel system cleaner from NAPA will get rid of that. If it is neither of these, the fuel pressure regulator could be leaking. Other than this, the car would need to be diagnosed by a shop before action is taken. I hope this helps you!

Posted on Dec 04, 2009

Testimonial: "I ended up taking the car to a local shop for diagnosis. It turns out that the fuel pump is week and not supplying enough pressure to the motor. "

  • 84 Answers

SOURCE: I have a 2004 grand prix gt and sometimes on start it stalls

Take your car to a dealer and tell them to "clean the throttle body" Known problem for this year. It will solve your issue.

Posted on Dec 30, 2009

  • 1 Answer

SOURCE: My 2000 grandprix gtp will start for a min then

could be your anti theft system needs to be reset. turn your key to the on position for ten min, turn it off and then back to the on position for ten more min it should reset your key. anti theft cuts off your fuel supply so it can't be stolen

Posted on Mar 20, 2010

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I have a 99 geo metro.4 cyl no start condition.new fuel pump/filter.will start with ether and hold about 2000rpm if holding throttle..will not idle or start withought the ether...help please.


First off.... You have to make sure it IS getting fuel. Are you sure the fuel pump is getting 12volts... the fuel filter is installed in the right direction? Have you disconnected the supply line at the throttle bodt to verify fuel pressure and volume? If it starts with ether... there is definately a fuel supply issue from the tank

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I have a 1998 Volvo S70. In cold start up, car runs 15 seconds, then dies out. It won't start after that. I've cleaned throttle body, cleaned out air induction pump, and replaced air pump relay.


Does the car throw a check engine code? If so, what is that code?

This could also possibly be the ignition. My V70 had a bit of trouble on a couple of cold mornings. I replaced the ignition switch (located in the steering column on the opposite side of the key hole).

Also check the fuel pressure and fuel filter. Could be a pump and filter problem. Fuel condenses at lower temperatures and if the pump is having issue pushing the thicker fuel through the filter, take a look at that to be an issue.

Lastly, check the throttle and the fuel injectors. Run fuel system and injector cleaner like HEAT through the fuel tank to see if it helps.

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My 2001 Suzuki Grand Vitara died while I was going about 50 mph and will not start back..


could be fuel pump and could be that timing belt or chain is broke..these might be things to have checked..

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You would have to test the fuel pressure on this vehicle by connecting to the line coming from the fuel filter to the fuel rail, there is no actual fuel test port on this vehicle. if you do decide to test the pressure... here is what your pressure readings should be>> Fuel Line Pressure 46-51 psi (320-350 kPa)
This actually sounds like a Fuel Pressure Regulator issue. I would recommend replacing the regulator and see how the vehicle responds after that..

Hope this helps...

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No Fuel at throttle body


Fuses first.
Then, disconnect the fuel line at the throttle body (unless there is a fuel pressure testing port) and see if there is fuel when you turn on the key.
If not, fuel pump, probably in tank. (assuming there isn't one on the side of the engine..)
If there IS fuel in the line, then the computer may not be engaging the injectors. Check for wiring issues on something that old. Maybe the main junction splice for power to the computer. (Not sure where on that one, sometimes it's in a dumb place, like near the battery and it gets corroded).

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2002 3400 won't rev


Throttle position sensor sounds like it's malfunctioning.

Apr 21, 2009 | 2000 Pontiac Grand Am GT

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