1995 Mercury Grand Marquis ABS system activates at low speed

Tiny
2CP-ARCHIVES
  • MEMBER
  • 1995 MERCURY MARQUIS
  • V8
  • 2WD
  • AUTOMATIC
  • 124,000 MILES
1995 Mercury Grand Marquis mileage: 124,000. The ABS system activates below 45mph with no warning lights and no error codes. The dealer could find no problem with sensors or sensor rings. Ford TSB says to check for poor or corroded connections which dealer says can take several hours of trial and error to track down. I know that one or both of the front rotors is warped, could this cause one of the sensors to give a false output at lower speeds? I am not convinced about the poor connection theory as that usually leads to erratic or sporadic problems and this problem seems to be speed related.
Friday, November 19th, 2010 AT 7:49 PM

1 Reply

Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,540 POSTS
You may have a faulty ABS computer. We would obtain a known good computer and substitute it for the one in the car first to eliminate the computer factor. If the computer proves not to be the problem, the connectors would need to be checked for corrosion or high resistance. Warped routers would not cause the problem you described.
Was this
answer
helpful?
Yes
No
Friday, November 19th, 2010 AT 7:53 PM

Please login or register to post a reply.

Sponsored links