Sudden Acceleration when braking

Asked by May 18, 2011 at 04:03 PM about the 2002 INFINITI QX4 4 Dr STD 4WD SUV

Question type: Maintenance & Repair

Has anyone experienced sudden acceleration problems when braking? It has happened to me at least 4 times recently. Once I barely touched the brakes when leaving a gas station and the engine started racing. I held down the brake and threw it into neutral and watched the tach go up to 5000 rpm before dropping back down to a normal 800 rpm.

3 Answers

I was just in an accident today due to this. My hand break didn't work and I slammed into a tree. Please report this becuase this shouldnt happen and don't want this to happen to someone else

30

it sounds like you hve either a bad brake booster or the one way check valve in the main vacuum line coming out of the booster is bad

1 of 1 people found this helpful.

Thanks, I will mention this to my mechanic since I need to bring it in for some service.

Your Answer

QX4

Looking for a Used QX4 in your area?

CarGurus has 183 nationwide QX4 listings starting at $1,900.

ZIP:

INFINITI QX4 Experts

  • #1
    uksean
    Reputation
    350
  • #2
    Tom Demyan
    Reputation
    150
  • #3
    brit152
    Reputation
    130
View All

Related Models For Sale

Used Nissan Pathfinder
359 Great Deals out of 26,879 listings starting at $1,500
Used Toyota 4Runner
276 Great Deals out of 23,384 listings starting at $2,300
Used Nissan Murano
354 Great Deals out of 25,391 listings starting at $1,895
Used INFINITI FX35
56 Great Deals out of 1,287 listings starting at $2,995
Used Nissan Xterra
85 Great Deals out of 3,263 listings starting at $1,300
Used Acura MDX
463 Great Deals out of 17,147 listings starting at $1,200
Used Jeep Grand Cherokee
862 Great Deals out of 70,630 listings starting at $700
Used Honda Pilot
508 Great Deals out of 36,323 listings starting at $500
Used Ford Explorer
946 Great Deals out of 69,255 listings starting at $1,495
Used Ford Expedition
355 Great Deals out of 18,339 listings starting at $1,989
Used BMW X5
348 Great Deals out of 13,565 listings starting at $2,500
Used Chevrolet Tahoe
742 Great Deals out of 41,784 listings starting at $1,995
Used Ford F-150
2,603 Great Deals out of 198,121 listings starting at $1,300

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.