1998TA__1991RS

iTrader: (23)

for the past few weeks my ABS has been acting up, when im cruising along the low traction light will flicker and the abs inop light will come on, then when i put on brakes the first time after the light comes on they pulsate really bad and act like they want to lock up, but after the first time its fine but the light stays on, any ideas??

Gregg_98TA

iTrader: (5)

Do you have TCS also? Is it just the ABS Inop light or is the red Brake light on also?

It sounds like you have a wheel speed that is going out. But check your tire pressures. I am also assuming you have the same tire size all around.

1998TA__1991RS

iTrader: (23)

no i do not have TCS, yes its just the abs inop (and low trac. flicker) and the tires are 275/40/18 all around, also my car was tuned with 275/40/17 on it and everything was adjusted over the factory 16's could the new wheels make a difference?

Eugenio_SS

iTrader: (2)

maybe one of your abs sensors is dirty, bad connection or defective.

1998TA__1991RS

iTrader: (23)

any other ideas??

jimmyblue

iTrader: (11)

As long as the tires are all the same size (10% difference in
circumference seems to be where the pain comes in) the
ABS doesn't care. I think the sensors are the best bet, an
intermittent connection or a loose mounting position.

LS1INSIDE

Not to hijack the thread, but will having two different sizes on the front wheels cause the abs inop to turn on? for ex. 275/40/17 on the pass. and a 255/35/17?

Gregg_98TA

iTrader: (5)

1998TA-1991RS,
Assumming you have no wiring issues, I would say you probably have a wheel speed sensor on the way out. Keep in mind the front sensors are incorparated into the hubs and if one is going bad, it will also effect the wheel speed sensor.

JimmyBlue,
The actual difference in tire circumference between tires is 6%, but if you take into acount turning 3% is about as much as you can safely go without setting a fault.

LS1INSIDE,
The tire sizes you use in your example will definately set a fault.