Question about 1999 Pontiac Grand Prix

2 Answers

Will run fine, then seems sluggish and shuts off, but will start right back up

The car will be running fine then it will seem as if it is not getting enough gas and start jerking, and will shut off no lights come on when this happens you pull off the road and it will start right back up it may do this one or two more times then will run perfect and days may go by before it does it again? has new fuel filter on it...maybe coil pack or fuel pump not sure please help

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 4 Answers

Mass air flow sensor worked in my case

Posted on May 30, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

Try to replace the mass air flow sensor

Posted on Oct 20, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Running great but shut down mid ride. Acted Like the kill switch was hit. Checked the switch it was fine. Started right back up. Ran for another minute then shut down again. Plugs have spark, fuel...


My guess is that this is not a car or truck, but rather a 4 wheeler. It may have a low oil shutoff, or bad coil that fails as it gets hot, but hen cools a bit and seems fine. Check for spark immediately as it fails.

Feb 10, 2015 | Cars & Trucks

1 Answer

1985 s10 2.8 v-6 sluggish around 45 mph


If you have a data scanner some of data doesn't code like out of range look for tps ,map,engine temps sensor data
hope it helps

Apr 01, 2014 | 1999 Chevrolet S-10

1 Answer

Crank sensor replaced car sluggish in gear


you need to reprogramme the replaced sensor and make sure you bought the correct sensor.

Apr 13, 2012 | 1995 Buick Riviera

1 Answer

1998 dodge ram pickup 318 eng. engine idle rough on warm-up engine idle rough after warm-up shutting off engine and starting back up engine also runs sluggish in over drive at a low idle. I have...


If the engine seems to run fine over 1450 RPM maybe there is a vacuum hose leaking or EGR valve is slightly stuck open. Any help from the OBD II trouble codes? Or is there simply no MIL and no stored information in the OBD II computer read at the local parts store through the connector by the drivers knee?

Dec 04, 2009 | 1998 Dodge Ram 1500 4WD

1 Answer

Jeep starts sluggish and then wants to die


It is most likely from that actually. You may need to adjust the air / fuel mixture after modding the intake. Sounds like its getting too much air.

Jul 17, 2009 | 1999 Jeep Wrangler

1 Answer

2004 ford f350diesle hard starting depress throtle nothing there


Dear dsmalley427,
I think it sounds like a fuel injection problem. You get fuel for a while until the injector backs up and then all of a sudden NO FUEL. The engine quits and the pressure drops and flow returns enough for you to restart. If I were you I would get to a good mechanic and check the fuel injectors.
OR--try adding a fuel additive that would clean the injectors.--Signed jwr

May 10, 2009 | 2004 Ford F350

1 Answer

Drove 25 miles to Norwich this morning and everything seemed fine. However on the way back i was overtaking on the bypass when the car seemed sluggish. It took ages to get past lorries etc when usually...


Have the fuel pressure checked, make sure the exhaust system is not restricted by having a back pressure test run, I assume lorries are trucks? In any event check the fuel pressure first, you may have a plugged fuel filter, or the fuel pump may be failing.

Jul 25, 2008 | Audi A6 Cars & Trucks

Not finding what you are looking for?
1999 Pontiac Grand Prix Logo

236 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

61168 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Pontiac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...