reatta abs and brake light on

[johhny d]

have abs light on and brake light on 1990 reatta changed accumulator. Pedal is hard have no power brakes pump sound very weak. Time for new ABS pump ?

[padgett]

Check the ABS relay first - most common cause.

[Barney Eaton]

Go here and read the test and suggestions........

http://www.reattaowner.com/roj/repair-tutorials-a-information/category/84-brakes-electrical

[Jim]

21 hours ago, padgett said:

Check the ABS relay first - most common cause.

Sorry Padgett, I disagree.

Having tested and sold many many pressure switches and pumps in all the years I have found only one bad relay.

Most common the PSW but now with age I am finding more pump/motors are going bad. 

I have both of them available in good tested condition.

[padgett]

Just replaced a relay, initially looked like a bad pump but was the relay going resistive. Probably cheapest thing to replace.

[2seater]

Check the switch at the pump itself. If it has fluid in it, the switch is leaking and must be replaced. My son has Daves89's winter car and he was having similar issues. Found the fluid in the switch caused the on and off pump pressures to be too low, approx. 1000psi low. Replaced switch and built pressure as it should but pump sounded terrible. Replaced the pump/motor assembly and all was well. Disecting the assembly afterwards found nothing wrong with the pump or motor, but must have gotten air locked. Bleeding the pump by applying vacuum to the outlet, brought it all back to life and will pump 3500psi with no problem.