G50 Q45 Anyone w/tcs /abs please chime in

[jamesmost]

When u back up down an incline does ur tcs/abs system do a self test (feel it pulsating)mine used to and now seems to have stopped.Thinking about swapping in the used abs pump i bought, but dont want to waste time and $.also how big oof a job is the abs pump, and how do u bleed it ?

[DetroitJazzMan]

james if you need the fsm pages for this component, let me know... Jazz

[3Q Jay]

james u mean the 'self check'? mine does it either in reverse or forward at ~ 3mph. did u check the relays? i hear the pump spool up when i go key on but not start (no not the fuel pump, the tcs pump).

[Q451990]

I have found my self-test to be much more noticeable in cold weather, or backing down a steep incline (used to live on a hill for a few months) - but the ABS light should come on immediately after a failed test if it's not testing correctly. I noticed this after putting the fuse back in the wrong spot after replacing mine. You might want to do a few "parking lot tests" the next time it rains before you go to the trouble of yanking it...

The 90-93 ABS pump isn't a huge deal to replace... esentially like a master cylinder - just more lines. I assume it's not much different for the 94-96.

Heath

[jamesmost]

james u mean the 'self check'? mine does it either in reverse or forward at ~ 3mph. did u check the relays? i hear the pump spool up when i go key on but not start (no not the fuel pump, the tcs pump).

i replaced the relays last year, i never hear my pump anymore.was wondering if i should replace