how to diagnose a no brake problem

Asked by Jul 19, 2017 at 09:40 PM about the 1998 Pontiac Grand Am 4 Dr SE Sedan

Question type: Maintenance & Repair

back out of garage pedal went to floor no sign of brake fluid on floor, could not see any fluid in reservoir filled pumped pedal still no leeks on floor an still no brakes, pedal hard with engine off ,pedal still goes to floor,pedal very soft with engine at idle still no brakes an still no fluid on floor   

2 Answers


If you could not see any brake fluid in the reservoir, then it went somewhere and there is a leak. Perhaps check to see if it leaked out of the master cylinder into the brake booster?

1 of 1 people found this helpful.

Bob is correct. You have a leak. The hard pedal with the engine off is normal because there's no vacuum assist with the engine off. HTH. -Jim

Your Answer

Pontiac Grand Am Experts

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

Related Models For Sale

Used Pontiac Grand Prix
1,902 listings starting at $3,000
Used Pontiac Firebird
6 Great Deals out of 658 listings starting at $4,999
Used Ford Mustang
287 Great Deals out of 38,472 listings starting at $1,995
Used Chevrolet Camaro
245 Great Deals out of 30,156 listings starting at $4,980
Used Chevrolet Malibu
605 Great Deals out of 48,235 listings starting at $1,500
Used Pontiac Bonneville
349 listings starting at $2,000
Used Chevrolet Corvette
107 Great Deals out of 15,743 listings starting at $4,500
Used Nissan Altima
789 Great Deals out of 67,229 listings starting at $750
Used Honda Accord
553 Great Deals out of 91,967 listings starting at $1,495

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.