Does anyone know how to replace the abs pump?

[x2nervisx]

I would like to know how to exactly replace my abs pump since my abs light comes on right from start up. I've changed the wheel sensors and replaced the relays and still get the abs light. I just wanted to know how labor intensive the job is and if i have to completely drain the brake fluid from the system before removing it. Thanks

[JamesM3M5]

Did you ever take it by the dealer or other shop with a scan tool to find out what the fault is in the first place?

It's very extensive. You will need to pull the master cylinder since it's right below that. Then whatever else is in your way will have to be removed or moved out of the way (possibly the intake manifold, throttle, etc). Then good luck bleeding out a new ABS unit without something to cycle the valves open. You're looking at a mininum of 3-4 hours if you're a fast mechanic, much longer if you're in a home garage.

What if it's the ABS computer? Or a bad ground causing a low voltage condition?

[TomG]

Get it scanned. The pump may not be the problem... if you do have to pull it, you can sneak it out by first removing the ASC throttle plate assembly and the rubber elbow, as well as the ASC actuator. The brake master can stay in place- ask me how I know. Bleeding will need to be done by someone with the ability to cycle the unit.

[TIATO]

2 ways to cycle ABS pump:

1. Use the brakes hard enough to actuate ABS. Near impossible if you got air in the system, especially in the pump.

2. Take it to the dealer and have their diagnostic computer cycle the pump.

[deilenberger]

As everyone else has pointed out - you're shotgunning it.. which means throwing parts at it hoping the problem will go away. It would have cost you a max of 1 hour labor at a shop to have the codes read - less if you're a nice guy and polite to them. So far you've thrown how much $$$ at the problem?

Eventually shotgunning will fix the problem - the last thing you replace is always "it" - but it gets awfully expensive taking that route sometimes.

The saying "penny wise pound foolish" (in this case the pound is a measure of $$ in the UK) comes to mind..