If your abs pump seems to be running after every few steps on the brake pedal or if your car has a hard brake pedal, more than likely your accumulator ball has failed.
There's a rubber bladder inside the ball that deteriorates over time more than from actual use.
If you still hear your abs pump running but still have a hard brake pedal or abs light comes on, most likely the accumulator ball is the culprit.
This is a brand new ball, not rebuilt
Comes with a new o-ring
Pre-charged pressure = 1000 psi
Max pressure = 3000 psi
Capacity = 20 Cubic Inch
Height (From bottom of threads) = 121 mm
Width = 93 mm
Thread = M14-1.5 x 10 MM
1987-1992 Ford Thunderbird All Models with ABS
1987-1992 Mercury Cougar All Models with ABS
1991-1993 Chrysler Town and Country Van, Dodge Caravan, or Plymouth Voyager
1989-1993 Chrysler Fifth Ave, Imperial, New Yorker, or Dodge Dynasty
1988-1992 Dodge Monaco or Eagle Premier
1989-1991 Jeep Cherokee or Wagoneer
1986-1990 Pontiac 6000 GTE
1988-1991 Buick Regal, Oldsmobile Cutlas, Cutlas Ciera, or Pontiac Grand Prix
1988-1989 Lincoln Continental
1988-1990 Buick Electra, Le Sabre, Park Ave, Buick Riviera, Reatta, Cadillac full size Passenger, Oldsmobile 88-98, Regency, Royale, or Pontiac Bonneville
1986-1987 Buick Electra, Le Sabre, Park Ave, Cadillac Deville, Oldsmobile 88-98, Regency, Royale
1985-1987 Lincoln Continental
1985-1992 Lincoln Mark VII
1988-1990 Cadillac Eldorado, Seville
1988-1990 Oldsmobile Toronado
1989-1990 McLaren ASC Turbo Grand Prix
I've looked for one of the for 5 months to repair the brakes on my 1990 McLaren ASC Turbo Grand Prix. It fit and work fine on it. I can drive the car again!!!!