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


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

Your Answer

Pontiac Grand Prix Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used Chevrolet Impala
156 Great Deals out of 1,110 listings starting at $2,950
Used Chevrolet Monte Carlo
16 listings starting at $4,995
Used Chevrolet Malibu
68 Great Deals out of 1,822 listings starting at $2,495
Used Pontiac Grand Am
25 listings
Used Ford Mustang
1,034 listings starting at $3,900
Used Chevrolet Camaro
1,075 listings starting at $12,995
Used Pontiac Firebird
12 listings starting at $17,000
Used Nissan Maxima
23 Great Deals out of 408 listings starting at $1,995
Used Jeep Grand Cherokee
146 Great Deals out of 3,993 listings starting at $2,400

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.