raene

As stated, have a '97 GSR with an (almost) constant ABS light. I'm pretty clueless about ABS. The light comes on pretty much as soon as the ABS pump stops, it runs for about 5-10 seconds. (Very) occasionally, the light won't turn on. The pump turns on very infrequently when driving, maybe once every 15-30 minutes?

I've tried resetting the ECU and wiggling the ABS ECU connector, doesn't seem to make a difference; the light comes back on again after. I've also tried replacing the accumulator o-ring and the reservoir o-ring, same thing.

Bad accumulator? Bad modulator unit? Open to suggestions, thanks

el crapitan

if the pump continues to run after the intial pressurizing on start up, it's likely not holding pressure. did a little reading and apparenty the most common cause is a leaking solenoid valve in the modulator. not serviceable.

i take it you bled the system thoroughly?
there is also an O ring on the motor which can be accessed with the motor being unbolted from the modulator. that, and the other 2 O ring s are the only serviceable seals i believe. however, i'm pretty sure that if that seal goes, system won't build pressure.

Dogginator

My pump cycles frequently on my '97 GSR. I noticed that swapping the brake fluid reduced the pump cycle frequency.