I have a 2005 Pontiac grand Prix GT that just started making a loud noise like a motorcycle while accelerating.Do anyone know what that can be?

Asked by Jun 03, 2015 at 01:56 AM about the 2005 Pontiac Grand Prix GT

Question type: Maintenance & Repair

3 Answers

107,685

The only thing I can tell you is try removing the serpentine belt then start the engine and listen, if the noise is gone then you know it is one of the accessorie drives, ie and idler, alternator, water pump, A/C clutch, etc. If the noise is still there with the belt off then it is engine internals. Don't run the engine too long with the belt off, as it turns the water pump.

145

Not trying to be a smart butt... Do you have a hole in the exhaust somewhere? Not completely sure what you mean by "loud like a motorcycle"

1 of 1 people found this helpful.
4,565

I agree, the info given is pretty vague, but a plugged catalytic converter comes to mind.

Your Answer

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,468 nationwide Grand Prix listings starting at $500.

ZIP:

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    4,470
  • #2
    Tom Demyan
    Reputation
    3,120
  • #3
    munron
    Reputation
    2,550
View All

Related Models For Sale

Used Chevrolet Impala
534 Great Deals out of 33,170 listings starting at $1,495
Used Dodge Charger
430 Great Deals out of 35,018 listings starting at $2,000
Used Pontiac Bonneville
433 listings starting at $1,500
Used Chevrolet Monte Carlo
7 Great Deals out of 1,248 listings starting at $1,125
Used Pontiac G6
41 Great Deals out of 3,839 listings starting at $1,250
Used Chevrolet Malibu
1,058 Great Deals out of 57,051 listings starting at $995
Used Pontiac Grand Am
951 listings starting at $2,489
Used Ford Mustang
457 Great Deals out of 42,833 listings starting at $1,488
Used Pontiac GTO
8 Great Deals out of 421 listings starting at $4,995
Used Chrysler 300
377 Great Deals out of 19,185 listings starting at $2,300
Used Jeep Grand Cherokee
930 Great Deals out of 67,540 listings starting at $950
Used Nissan Maxima
340 Great Deals out of 20,724 listings starting at $1,175
Used Buick Regal
138 Great Deals out of 6,554 listings starting at $3,995

Used Cars For Sale

2007 Pontiac Grand Prix GT For Sale
53 listings starting at $500
2006 Pontiac Grand Prix GT For Sale
71 listings starting at $1,988

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.