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Abs Unit Dying? Buzzing Noise + 4Wd/abs Not Engaged

WYTSKY
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WYTSKY Veteran

WYTSKY

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Posted

Hey guys,

driving home a couple of hours ago, stopped at the lights, my 4wd and ABS lights come on and steering felt abit funny ( prob because of awd not running).

got it home and took this vid ->

first 3 seconds is fuel pump priming, but after that there is this funky noise coming from the abs module, I ran over there to check and could feel the vibrations in it.

I have never ever seen anything leaking from the unit in the 5 years I have owned the car.

I have multiple questions:

1. does the unit just need to be bled/ simple fix?

2. if I need to replace it, is it an easy job? any complications?

3. can I use a 33 s2 unit in a s1?

4. what fluid does it take and how much?

5. Is it safe to drive the car in this state? Ie if I cannot fix this by monday I need to drive to work...

Thanks heaps guys.

Adam

WYTSKY Veteran

WYTSKY

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Posted

from the research I have done, I believe I have answered some of my own questions for other people's reference:

1. Unit cannot be bled, the normal brake system is what gets bled

2. not sure yet

3. I don't think a s2 will work in a s1 as a s2 has 2 lines that go to the top of the unit and a s1 has 2 bolts on the top instead, those extra 2 lines are attached to the side of s1.

4. fluid comes from brake master cylinder, normal dot3/4 castrol super etc...

5. I noticed especially in reverse that the brakes felt like they were stuck on, I took out the 2 relays in the black box and I still have the abs and 4wd lights on as I don't have abs now, but atleast I can drive to work tomorrow and use the car until I locate a replacement.

I will do a full brake bled and put in new fluid to hopefully see if it fixes it, but I think the unit has probably had it.

anything else I should know?

luke gtr Grand Master

luke gtr

Posted
Posted

Try and get a workshop manual.

It will have proper bleeding instructions.

The r32 units can be bled, but by the sounds of it, I think the unit has seen better days.

Good luck with it all.

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