My car keeps over heating and shaking plus my engine light keep flashing

Asked by Jul 08, 2016 at 03:40 PM about the 2008 Pontiac Grand Prix

Question type: Maintenance & Repair

2 Answers

17,660

Sounds like you have a clogged catalytic converter or muffler.

1 out of 1 people think this is helpful.
61,335

Check the cooling system as well. You may be low on coolant because of a leak. When these cars overheat they will sometimes go into "limp home mode". What happens is the computer starts alternately firing different sets of cylinders to keep you going and the cylinders that aren't firing act like an air pump to help carry away the excess heat to avoid engine damage. I had a situation with my '00 Grand Prix back in December. One of the plastic coolant elbows came apart and spewed hot coolant all over the engine compartment. The coil pack directly above the elbow got the brunt of the hot coolant and fried it. I too was still getting a misfire on cylinder 3. I replaced the coil pack and it was fine. HTH. -Jim

Your Answer

Add photo

Related Questions

  • shaking?? 13 answers

    whenever i am accelerating on the gas in my car, its gives me a bad shake. As soon as I take my foot off the gas, the shaking stops. I have had all of my tires replaced and balanced, but it still co...

    2005 Pontiac Grand Prix Base

    -

    Maintenance & Repair

  • shaking as i speed up 2 answers

    2000 grand prix supercharger

    2000 Pontiac Grand Prix GTP Coupe

    -

    Maintenance & Repair

  • what cause the car to shake while at the red light 2 answers

    2004 Pontiac Grand Prix GT1

    -

    Maintenance & Repair

  • 2000 PONTIAC GRAND PRIX GT (3.8L V.6 ENGINE) 3 answers

    THE LAST COUPLE OF DAYS THE CAR KEEPS ACTING LIKE ITS MISFIRING/OR GOING TO DIE.......THE SPEDOMETER BOUNCES BACK AND FORTH AND THEN IT DIES......ANY IDEAS AS TO WHAT IT COULD BE? PLEASE HELP

    2000 Pontiac Grand Prix GT

    -

    Maintenance & Repair

  • What is causing my Pontiac Sunfire to shake with check engine light flashing? 1 answer

    My pontiac sunfire is shaking, has a oily smell, and my check engine light is flashing on and off. I changed spark plugs and no difference...only started white colored smoke from the tail pipe. I ...

    2005 Pontiac Sunfire

    -

    Maintenance & Repair

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 3,990
#2 Tom Demyan
Tom Demyan
Reputation 2,670
#3 munron
munron
Reputation 2,070
View All

Related Models For Sale

Used Chevrolet Impala
795 Great Deals out of 34,381 listings starting at $799
Used Pontiac G8
23 Great Deals out of 424 listings starting at $4,750
Used Dodge Charger
356 Great Deals out of 29,613 listings starting at $2,475
Used Chevrolet Monte Carlo
15 Great Deals out of 1,662 listings starting at $2,000
Used Pontiac G6
78 Great Deals out of 5,112 listings starting at $499
Used Chevrolet Malibu
1,003 Great Deals out of 85,673 listings starting at $1,995
Used Ford Mustang
362 Great Deals out of 44,353 listings starting at $1,000
Used Nissan Maxima
345 Great Deals out of 25,216 listings starting at $1,400
Used Honda Accord
812 Great Deals out of 81,598 listings starting at $899
Used Nissan Altima
1,085 Great Deals out of 82,542 listings starting at $670
Used Jeep Grand Cherokee
844 Great Deals out of 68,670 listings starting at $864

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
13 Great Deals out of 462 listings starting at $1,200
2007 Pontiac Grand Prix For Sale
5 Great Deals out of 542 listings starting at $3,250
2006 Pontiac Grand Prix For Sale
8 Great Deals out of 605 listings starting at $1,999
2005 Pontiac Grand Prix For Sale
451 listings starting at $5,900