Question about 1998 Pontiac Grand Prix

2 Answers

Car acts like its sliping or miss fireing when driving

Changed coil packs . map air sens . and tpi sens and still dong it

Posted by on

Ad

2 Answers

  • 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
  • 957 Answers

Is the eng, light on, if so use the found codes as a basis. check the fuel system for low fuel pump pressure, clogged fuel filter. If its fine check the exhaust back pressure. Before the cat. pull the O2 sensor
out and install a low pressure gauge to see there is excessive back pressure. more then 5 to 10 PSI would indicate an issue with the CAT.

Posted on Apr 24, 2009

Ad
  • Level 1:

    An expert who has achieved level 1.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 1 Answer

Mine did the same thing too. Engine light came on, spuddered and did not accelerate. I brought into my local shop, (i was in a bind and had no other options, late 4 work, and they had a shuttle service). they scannd it and said it was one of the coil packs. So i replaced it with one from a slavage yard. Still threw the same code. I overlooked the obvious, the plugs were completely shot. I changed plugs/wires, ran great, better than ever. Brought the old plugs down to shop and they said they checked them and they were fine. They didn't of course. They're a bunch of morons.Have you Checked plugs and wires??

Posted on Jun 07, 2009

Ad

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 there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...
1998 Pontiac Grand Prix Logo

141 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

80339 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8841 Answers

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

Answer questions

Manuals & User Guides

Loading...