99 Grand Prix sputtering

Asked by Apr 19, 2017 at 05:52 PM about the 1999 Pontiac Grand Prix 2 Dr GT Coupe

Question type: Maintenance & Repair

I have a 99 Grand Prix , when I first got it , it would
shut off sometimes usually when coming to a stop ,
I replaced the crankshaft sensor and after that the
car never died again but always tried to , then I
replaced the throttle position sensor , while doing
that I broke a vacuum line , drove it for a while and
played with it , I replaced the vacuum line to the
best of my ability . The car now shuts off , doesn't
want to go when you give it gas , starts trying to
bog out and will go dead after slowing down , and
shifts hard , and doesn't have overdrive any
answers ?

1 Answer

7,975

vaccuum hose from transmission diaphram is diconnected reconnect/repair it to intake and restore the overdrive.

Your Answer

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    4,460
  • #2
    Tom Demyan
    Reputation
    3,070
  • #3
    munron
    Reputation
    2,490
View All

Related Models For Sale

Used Chevrolet Impala
115 Great Deals out of 1,117 listings starting at $996
Used Chevrolet Monte Carlo
17 listings starting at $2,188
Used Chevrolet Camaro
917 listings starting at $12,000
Used Ford Mustang
14 Great Deals out of 1,155 listings starting at $4,500
Used Chevrolet Malibu
108 Great Deals out of 2,032 listings starting at $3,485
Used Pontiac Firebird
17 listings starting at $8,700
Used Nissan Maxima
39 Great Deals out of 397 listings starting at $2,985

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
6 Great Deals out of 22 listings starting at $1,600
2007 Pontiac Grand Prix For Sale
6 listings starting at $4,990
2006 Pontiac Grand Prix For Sale
16 listings starting at $5,995

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.