My ABS light goes on and off whenever it's wants. At start up it's off and then it may or may not come on when im driving when it does it's random. 40mph 70 30 whatever kind of strange has anybody else had this problem?

 

does it ever come on at idle? there was a thread about this recently, and it ended up being the ABS relays (in the little black box on top of the pump) malfunctioning and making the ABS motor kick on when heated up.
if you can hear the ABS pump running when the light is on, this is likely the problem.

 

thanks, I took it too mazda and they wanted $90 bucks just to look at it. STEAL-ER-SHIP'

 

have you checked your brake fluid level?

 

also the ABS light will come on if there is a problem with grounding between the negative battery terminal and the chassis. just thought youd like to know