If my ABS is not working at all, does that have any impact on the brake proportioning valve not working?

When I hit the brakes suddenly on a wet road, the rear wheels locked up and the back end slid out to the side. The rain had already stopped and the fronts didn't lock at all.

If my ABS is not working at all, does that have any impact on the brake proportioning valve not working?

When I hit the brakes suddenly on a wet road, the rear wheels locked up and the back end slid out to the side. The rain had already stopped and the fronts didn't lock at all.

What/which proportioning valve are you asking about?
Better have a look at the ABS brakes.
What year and 2 or 4 wheel drive and rear antilock or 4 wheel abs? Any lights on?
MT

Well, I didn't know there was more than one brake proportioning valve. I guess I'll have to do some research.

I was thinking of the one between front and rear brakes.

I have a '95, 4x4, w/ 4 wheel ABS. Yes, the ABS dashboard light is on. The garage said one of the solenoid valves / pumps (?) hangs up. If you tap it with a hammer, it will free itself, work for a bit, and then hang up again.

I'm thinking of taking a trip to some junkyards in search of a module assembly with valves / pumps.

Well, I didn't know there was more than one brake proportioning valve. I guess I'll have to do some research.

I was thinking of the one between front and rear brakes.

I have a '95, 4x4, w/ 4 wheel ABS. Yes, the ABS dashboard light is on. The garage said one of the solenoid valves / pumps (?) hangs up. If you tap it with a hammer, it will free itself, work for a bit, and then hang up again.

I'm thinking of taking a trip to some junkyards in search of a module assembly with valves / pumps.

I only see a conbination valve on it.
Have you got a VCM or PCM computer on it?
Have you had the system open or got air in it?
A scsnner is required to bleed most of them.
If the ABS light is on you need to get the code no.
Also a ABS capable scanner is required to get codes.
Post back code no.
MT