Vacuum line comes off when car is shut off

Asked by Adrastus Apr 17, 2019 at 09:35 PM about the 2000 Pontiac Grand Prix

Question type: Maintenance & Repair

The vacuum line for the brake booster keeps coming off every time the car is
shut off. It's a tight fit and there is vacuum at the port when it's running, just
blows off when the car is turned off. Any ideas?

1 Answer
42,830

Hornet_2497 answered 5 years ago

If there is a backfire, that will put brief pressure on the intake manifold where there is normally vacuum. That might be what's blowing the hose off. I would just clamp that hose on, even if there seems to be a tight fit. I had a vacuum line that runs the cruise control coming off because it was old and stretched. A clamp fixed it.

Mark helpful

Your Answer:

Related Questions

Shortcuts

Search Pontiac Grand Prix Questions

CarGurus Experts

  • #1
    munron
    Reputation
    8,120
  • #2
    james sparrow
    Reputation
    7,480
  • #3
    Dorian Hendricks
    Reputation
    6,000
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Monte Carlo
4 listings starting at $9,800
Used Chevrolet Impala
12 Great Deals out of 130 listings starting at $4,888
Used Pontiac Bonneville
2 listings
Used Pontiac Firebird
19 listings
Used Ford Mustang
57 Great Deals out of 1,668 listings starting at $5,977
Used Buick Regal
3 Great Deals out of 25 listings starting at $6,995
Used Chevrolet Corvette
28 Great Deals out of 646 listings starting at $10,989
Used Pontiac Grand Am
4 listings
Used Chevrolet Camaro
15 Great Deals out of 487 listings starting at $11,995
Used Honda Accord
50 Great Deals out of 998 listings starting at $2,995

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. Content will be removed if CarGurus becomes aware that it violates our policies.