I have a 2000 Pontiac Grand Prix 3.8 liter that is loosing power.. Eventually it dies and then doesn't want to turn over at all! Replaced fuel filter then mass air flow sensor. any ideas??


Asked by Apr 05, 2015 at 10:32 PM about the 2000 Pontiac Grand Prix GT

Question type: Maintenance & Repair

It seemed fine after replacing sensor
long enough for me to drive an hour
tops before doing same thing again.
Power loss while driving then
completely dies for an hour or so

9 Answers


Sorry should have said mass air flow sensor METER..


wouldn't hurt to have the fuel pressure tested to make sure it is within specs.


Is the check engine light on or flashing while this is going on? If you have over 100,000 miles on the car you're due for a tune up (new spark plugs and spark plug wires). HTH. -Jim


The check engine light is on but staying on.. And car has like 67,000 miles on it.. I didn't know that it has some different cooling system in it and only supposed to use de cool

1 out of 1 people think this is helpful.

Dexcool in it and fill it a certain way.. I used regular antifreeze and put it in like a normal car.. Could that be the problem?

1 out of 1 people think this is helpful.

Bad idea to mix dex with anything! It can cause sludge build up, and lack of cooling ability at best, and gasket failure at worst. Don't know how long ago you did it, but a flush and refill would be a very good idea. As far as the drivability problems, it could have an effect if the coolant has been mixed and run long enough to cause serious damage. If the check engine light is on have the code scanned and post back.

1 out of 1 people think this is helpful.

Yes, have the computer scanned and post the trouble code(s) here and we can help. Most auto parts stores will do it for free. Check the antifreeze bottle. If it says "all makes/all models" on the bottle, your fine. But if it's the old fashioned green stuff, get it out of there. At 67,000 miles you're not due for a tune up but have the coil packs tested. One or more may be breaking down. If one of the coil packs is breaking down replace all 3. If one is failing the others are soon to follow. These engines are notorious for intake manifold gasket failure. Have that looked at as well. With the mileage you have on the car it's possible they haven't been replaced yet. HTH. -Jim


Thank everyone for all the help I will go get that scan done after work today and post the codes..

1 out of 1 people think this is helpful.

You're welcome. Glad to help. -Jim

Your Answer

Add photo

Related Questions

  • mass air flow sensor 24 answers

    I have a 1999 grand prix gt. My service engine light came on and i went to auto store and used the computer. It indicates the mass air flow sensor is problem. So I tried some cleaner and reset the...

    1999 Pontiac Grand Prix


    Maintenance & Repair

  • 2004 Pontiac Grand Prix Ask me any questions 39 answers

    I have totally replaced and rebuilt this car. I have experienced some major obstacles and solved them. I have experience with this year model Grand Prix. I may be of some help to others.

    2004 Pontiac Grand Prix GTP


    Maintenance & Repair

  • 2000 pontiac grand prix will crank but not start, have replaced fuel pump, fuel filter, no codes 4 answers

    Would start stall out at various times, hard to start various times, replaced fuel pump, filter, replaced throttle sensor mass air sensor, etc. i have no idea of where to go next.

    2000 Pontiac Grand Prix GTP


    Maintenance & Repair

  • What is the max milage that a Grand Prix can get? 46 answers

    My grand prix is a 99 and it has 119,000 miles on it. How much longer can it go?

    1999 Pontiac Grand Prix 4 Dr GT Sedan


    Maintenance & Repair

  • What would cause the mass air flow sensor constantly put out low input 42 answers

    Ok so just put in a brand new mass air flow sensor and it still coding out po102 which is low mass air flow current.what could it be? Dash lights stay on. Car idles erratically and doesnt go pass...

    2001 Pontiac Grand Am GT


    Maintenance & Repair

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,867 nationwide Grand Prix listings starting at $1,500.


Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Reputation 4,160
#2 Tom Demyan
Tom Demyan
Reputation 2,830
#3 munron
Reputation 2,180
View All

Related Models For Sale

Used Chevrolet Impala
587 Great Deals out of 31,590 listings starting at $799
Used Pontiac Bonneville
3 Great Deals out of 536 listings starting at $1,799
Used Chevrolet Monte Carlo
20 Great Deals out of 1,393 listings starting at $1,995
Used Pontiac Grand Am
1,222 listings starting at $1,999
Used Ford Mustang
458 Great Deals out of 45,660 listings starting at $1,999
Used Chevrolet Malibu
915 Great Deals out of 79,618 listings starting at $1,500
Used Chevrolet Camaro
214 Great Deals out of 30,774 listings starting at $1,217
Used Honda Accord
830 Great Deals out of 85,682 listings starting at $988
Used Pontiac Firebird
10 Great Deals out of 732 listings starting at $3,875

Used Cars For Sale

2007 Pontiac Grand Prix GT For Sale
3 Great Deals out of 80 listings starting at $2,500
2006 Pontiac Grand Prix GT For Sale
81 listings starting at $2,675
2005 Pontiac Grand Prix GT For Sale
4 Great Deals out of 112 listings starting at $1,895

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.