ABS pump failure symptoms

[Sc0-]

How many had experience with a failed ABS pump and remember the symptoms?

'95 truck and wears the passenger side front tire SUPER quick. Brakes pull to the right 80% of the time. Alignment is good, tried two different calipers, new brakelines, new bearings and axles are good so am thinking it might be something in the pump. I'm guessing the solution is either a salvage yard replacement or deleting the pump...

 

[Comet]

Passenger pads or tires? One is brake issue, the other is alignment or bent something in the suspension. I'm not an attorney and I don't play one on TV so recommending the removal of the ABS is not legally binding. I removed ABS years ago and have never looked back. You could unplug the ABS fuse and see what happens. Is part of the hard line pinched or clogged with rust or foreign material? As usual, smarter people than me should chime in based on your symptoms. Good luck.

 

[cjmoon]

If your pulling to the right your left caliper is the one frozen. So you right caliper and tire is doing all the work. Did you replace both or right side thinking it’s the problem.

I prefer to rebuild calipers to many crap rebuilt units out there.

 

[Sc0-]

I do not recall what the pads were like, getting the truck back on the road now and remembered the issue... Will check the brake pad wear to see if it's brake or allignment related.

 

[smritte]

Assuming your vehicle pulls when braking only and not while driving. What is hard to post is, how hard does it pull? Does it want to change lanes on light braking or do you have to brake hard to see a slight pull? These things make this type of diagnostic difficult over a forum. Here's all the possibilities. Check and eliminate each one and see what you have left. I don't know if 94 has a fixed or floating caliper. floating can have slider pin issues where fixed it would have to be an internal issue
1.Right caliper grabbing harder. (jamming due to slider pins, piston sticking.)
2.Left caliper not grabbing hard enough. (One rotor considerably thinner then the other causing excessive heat either fading or glazing the pad, both cause less friction. piston jammed open.)
3.You mentioned new brake lines but, old brake likes can brake down internally causing a chunk of rubber to block or act as a check valve. Will cause either not grabbing or sticking with calipers.
4. Kinked/bent metal line. something hit it somewhere.
5. Suspension bushing worn out. This will let the tire move back when braking. One side of the vehicle is now shorter than the other. A vehicle pulls to the shorter side. 1/8 inch while heavy braking is significant.
6. Wheel bearing. One side too tight or loose. this is subtle but can be noticeable.
7. Mismatched brake pads. One has more friction than other or one is contaminated.

Without actually seeing it, there's alot of guessing going on. If you suspect ABS pull the fuse. If you do have an issue there, its unmasking another issue. ABS "should" not cause your issue. If it is, somethings causing it to come on while your braking normally and has an issue internally. You should be able to hear pump running while braking if that's it.

I don't think I missed anything.

 

[BILT4ME]

I do not recall what the pads were like, getting the truck back on the road now and remembered the issue... Will check the brake pad wear to see if it's brake or allignment related.

It won't be alignment issues. The only alignment there is does the toe-in/out adjustment which affect BOTH front wheels the same.

Otherwise, it's a bent axle, and that would be ALL the time, not just when braking.

I agree with @cjmoon. I'll bet it's the LEFT one that's NOT working, as opposed to the right one hanging up.