Question about 1989 Pontiac Grand Prix

1 Answer

I have a 1989 Pont Grand Prix, it will idle without problems, but when out on the road If I accelerate it will cut completly out sometimes it will die and maybe start back and sometimes it won't but after a short wait it will start up, I have a new fuel pump, and have changed the coil pack, please help I love this old car.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,187 Answers

Grand Prix ... my fave, too.

It is the "accelerator pump" on the carb; or rather the rubber diaphragm inside the accelerator pump.

The pump "arm" is visible on the top-front of the carb. Maybe the arm got loose or disconnected, but it's most likely the diaphragm inside.

The accelerator pump squirts extra gas when you stomp it.... while the fuel pump tries to keep up, but can't...

Maybe $10 at any auto parts store...

Posted on Sep 09, 2009

Testimonial: "Thanks for the suggestion, but my 89 Crand prix is equiped with a throttle body,it don't have a carb."

  • Just Gort
    Just Gort Sep 09, 2009

    I still seems to be fuel related...

    If you changed the fuel filter, check the old filter for captured goop from the gas. If you already discarded (and can't get to) the old fuel filter, then replace the fuel filter again and check the filter for goop... clogged fuel filter from gas contamination? The gas may be "good" but is contaminated with particles...











×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Surging and stalling


Get it check out call someone to do it for you

Jan 18, 2014 | 1999 Pontiac Grand Prix

1 Answer

2003 pontiac grand prix shakes when idle/cuts off when idle


check your codes and vacum hoses and see if it needs a tune up

Apr 02, 2013 | 2003 Pontiac Grand Prix

1 Answer

My 1990 grand prix is having problems running


check the catalytic converter for clogged up. most of muffler shop will check this for free.

Apr 21, 2010 | 1990 Pontiac Grand Prix

1 Answer

Car is quiting while going down road


Have you ever replaced the ignition coil? Sometimes a coil will heat up and break apart inside losing your connection/charge inside it to fire your plugs.

Mar 17, 2010 | 1989 Pontiac Grand Am

1 Answer

03 pont. G. prix gt. when i pushed the gas pedal down the car does not accelerate the way it should . i recently replaced the fuel injector pressure reg.


could be your coil,or o2 sensor, catalytic convertor clogged with out code its really hard to tell these are just some suggestions

Feb 07, 2010 | 2003 Pontiac Grand Prix

1 Answer

1989 Grand Prix 3.1 idles rough wont accelerate over 2,000 r.p.m.


Sensors, try the o2 loacted on the muffler, normally sensor are the number one cause for rough idles, so I heard, please rate thanx

Aug 21, 2009 | 1989 Pontiac Grand Prix

1 Answer

I have a 2002 Grand Cherokee 4.0 cruise control cutting out


it is hard to know without scanning for codes, do you have a way to scan? If not parts stores usually do it for free.

Jun 19, 2009 | 2002 Jeep Grand Cherokee

2 Answers

Throttle/Idle/running problem - wants to run too fast, or stall out


RPM's up and down check EGR valve and sensor. EGR valve and sensor control idle. That's why your getting the surging on rpm's and this could be giving out the other codes. If mass flow was bad car will not start and the same for the map sensor. O2 sensor measures gas and air for right mixer. TPS controls 0-60 speed as in throttle respons.

Apr 28, 2009 | 1989 Pontiac Grand Prix

2 Answers

1997 pontiac grand prix with major issues


check all fuses for turn signal and brake lights.change fuel filter . first. do a little tune up change spark plugs and wires . if changing fuel filter dont help. have fuel pressure check first before buying a new fuel pump .they run after taxes 400.00 dollars. your fuel pressure should be 41 to 47 psi. replace fuel pump relay also.

Mar 16, 2009 | 1997 Pontiac Grand Prix

1 Answer

Motor runs rough no power 1989 pont.grand prix. 3.1 motor


unplug your harness for your transconverter clutch for transmission,this will not harm your transmission. i had this problem on a 91 grand am

Aug 20, 2008 | 1993 Pontiac Grand Prix

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

216 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

75077 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7768 Answers

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

Answer questions

Manuals & User Guides

Loading...