Buzzing Abs Unit

[Scooby_Steve]

Hi,

Just wondering if anyone could give me a basic idea of what is wrong with my car before I take it to the brake specialist or auto electrician... so they dont talk a whole heap of sh*t to me..

Recently, after of turn my car off, my ABS Module continues to buzz and eventually, overnight, will use all of the charge in my battery.

I have since disconnected the power to the ABS module and the car can start even after 4 days of not being turned on. (I do reconnect the power to the ABS module when I'm driving).

Prior to this my ABS light was coming on after turning the car on but will intermittently go away for a few trips then reappear.

LASTLY i think my ABS Module has sh*t itself.

So if anyone could shed some light, It would be greatly appreciated. Thank you.

Regards

Steve

[SteveL]

Sounds like a faulty ABS solenoid. Disconnect the electrical plugs to the unit and check for corrosion. If that doesn't fix it most likely your up for a replacement unit as parts aren't sold separately.

[Scooby_Steve]

Hi,

I did have a faulty rear solenoid according to a diagnostic hand held computer... The mechanic was able to remove the error code in the ABS computer but not the error code indicating that the rear solenoid was faulty.. this could be the problem.

[locky]

Have seen this problem on an s13. unscrew the black cover on the abs unit and there should be a relay in there which had died. so all I did was replace the relay. the buzzing noise is most likely the pump working continuously. hope this helps

[Scooby_Steve]

Hi,

Thanks guys.. will try that...

[gts4diehard]

hi, if relay doesnt fix abs unit, and you need some replacement bits, I have an abs unit which developed a leak around the cylinders. Rest of it is ok, you can have it for $40.

Stephen

[Scooby_Steve]

Hi Guys,

I checked my ABS unit and noticed a little black box... so is that what you were talking about Locky? I have taken the cover off and there are two white fuses (looks more two white blocks). When you shake it, there is something rattling inside the fuse that the power cable connects to so I think that that is the reason.. can you get these fuses replaced as it seems like they are glued on very very well...

Stephen, if i find out that my cylinders are OK and that I need something from your abs unit, i'll buy it off you..

Cheers guys.

[Scooby_Steve]

Hi Guys,

After taking off the cover on the little black box, the unit doesnt buzz anymore when the power is connected, thus somehow by taking off the cover and putting it back on, the buzzing is now gone when the ignition is off.

Lastly, my ABS light is still on (was on prior to the buzzing) and I noticed that it will only stay on if i start the car with the handbrake on. If I turn the car on with the handbrake down, then their is no ABS light. So it looks like it could be a wiring or sensor issue? Anyone know where I could start looking?? thanks

[Scooby_Steve]

Hi Guys,

Just thought i'd let you know the cause of my ABS problems...

after all tests by mechanics/autoelectricians (who couldnt tell me jack sh*t even after i told them that it could be a relay) and took my money anyway, i did what Locky said and replaced a faulty relay (the coil had broken). ABS light and problem went away and now ABS is working like a charm...

So thanks heaps LOCKY!!! and check the relay first..