RRC ABS - How 2 Disable it

C

Capthook

Guest
I've got a 92 RRC, and after I 1st set out my ABS makes a 'click click click' noise when slowly comming to a light, wheels pulling to the left :bigok: It's almost got me in trouble a few times now....

My question is, how do I (properly) disable the ABS? I've unplugged the sensor harness on the driver's side, but that didn't seem to make any difference.

At one point, I unplugged the abs pump :p and it didn't do the above clicking and pulling anymore, but eventually lost pressure in the brake system (pedal became squiiish city) & I had to plug the pump back in

Capt
 
C

Capthook

Guest
Definately. I just don't care about the ABS system, have spent $$$ on my Discovery II keeping it's ABS perfect & don't want to go there with my beast

(perhaps) later if I want to, I'll screw around with it and get another pump ect... but in the mean time I would like to just disable it and not have to run sideways into some one at a light
 
Chris-St Louis

Chris-St Louis

1
Oct 27, 2004
3,000
4
:banghead: It could be something simple.... Like a misadjusted wheel bearing, or a pushed out sensor.

At least try to fix it.

The pump you disconnected is the hydroboost, to give you assist. Is the light on?
 
C

Capthook

Guest
Yeah again, you don't know the entire picture here... (long story short) I know it's the driver's side wheel sensor kicking off a bad reading. Why? Because I've pulled that wheel off when I had to replace my half shaft & found out the CV joint free-wheeled inside the wheel when some hack mechanic put it in there without there being a half shaft behind it. Yeah, 3-wheel drive. Needless to say, the inside of the wheel where the cv is seated was very scored. I'm 100% sure thats where the problem lies, since scoring was around the abs sensor hole. I have the parts, don't have time right now.
 
C

Capthook

Guest
I know the ABS subject has been beat half to death, sorry 2 bring it up again but...

I've seen the thread on an 'abs / on off' switch' (see below) for the disco I. Wonder if I could make something like this work on my RRC. Is it true that unplugging the abs modulator will basically do the same thing? Or will this effect basic brake functions

ABS_override.JPG
 
JSQ

JSQ

Well-known member
Apr 21, 2004
3,259
1
44
San Diego, CA
I could be wronging, but I don't think it's possible to disable the ABS on a 92 rangie and have a functional brake system.

Keep in mind this is an op ed piece, if it were a disco 1 i'd be all for it (see the dweb hall of fame) but I don't think you can on your RRC.

could be wrong.
 
cptyarderho

cptyarderho

Well-known member
Apr 23, 2004
2,904
0
Va
I think Jack is right, the pump provides the vacuum, correct? No way to run without it unless you swap out master cylinders and such. The DI setup is different than the 92 RRC. The clicking sounds more like a CV, but the pulling is less common.
 
WILL.TILLERY

WILL.TILLERY

2
Apr 20, 2004
6,928
226
Floyd, Virginia
we converted a truck here to the non abs rover set up...not a bad way to go...

the other two posts are correct though...you can not just disengage it and have normal brakes like the early discos.
 
R

rovrkil

Active member
Dec 11, 2004
28
0
Lake City, FL
No way to disable, no "master cylinder" to provide pressure. I tried on my '90 RRC. Either have to fix the problem or do away with ABS and put in a D1 master cylinder.
 
ptschram

ptschram

Well-known member
Sep 27, 2004
21,955
50
In the shop doing the Lord's work one broken Rover
www.ptschram.com
rovrkil said:
No way to disable, no "master cylinder" to provide pressure. I tried on my '90 RRC. Either have to fix the problem or do away with ABS and put in a D1 master cylinder.
Click to expand...

The first sentence is not exactly correct, the master cylinder does produce pressure, but only as a last resort if the pump fails.

The second sentence is a suitable answer. But, it also requires some plumbing creativity.

I have heard of only a single person successfully disabling his ABS and retaining braking effectiveness-Perrone Ford! He did it by carefully experimenting with removing various relays.Eventually,he got it right.

Me, I've just gotten an '89 Rangie that will kindly donate its front axle/brakes and master cylinder to improve the brakes on my Disco trail rig.

PT
 
C

Capthook

Guest
I'd be interested in what relay Ford removed to disable the ABS. On the subject of un-plugging the wheel speed sensor, did that - didn't seem to make any difference and the brake light didn't stay on. Perhaps if I remove both front ones? Only disconnected the driver's side. Also to repeat Ian's question > what happens if you unplug the abs ecu harness :yawn: The wierd thing is, the problem goes away on mine after a short drive. It's hell in the begining and after that I don't hear it click away anymore so it's almost like it's on, then deactivated for the rest of the drive?

Also, Will - I like the idea of converting the setup to non-abs if that is the correct route... PM me w/ info on the parts if you can get them
 
Last edited:
sven

sven

Well-known member
Aug 5, 2004
4,921
0
51
State College,PA
www.expeditionimports.org
Capthook said:
On the subject of un-plugging the wheel speed sensor, did that - didn't seem to make any difference and the brake light didn't stay on.
Click to expand...

You sure you disconnected the ABS sensor and not somethign else? Weird. If that ECU doesnt get a signal from any of its sensors, the ABS light will constantly stay on and disable the ABS portion of the brakes, not the pump. Maybe your ABS ECU is all f'ed up?
Did you try getting the codes yet?

http://catalog.roversnorth.com/downloads/instruction_pdfs/RR_ABSfault.pdf
 
C

Capthook

Guest
Thanks for your post, and the pdf link.

I'm sure it was the wheel speed sensor I unplugged, it's really the only wired harness that goes into the wheel, and was disconnected on the inside fender. 2 answer your question, no I haven't tried to get the codes yet, I guess I'll try the blink-game later to get some more answers... As to the 'click' noise it makes, I'm almost certain it's not from the wheel, it's more of an electrical clicking sound when comming to a slow stop, then the wheel jerks to the left in sync with the sound of electrical clicking. Hope that explains it a little bit better, this one is def. wierd
 
Nomar

Nomar

Well-known member
Apr 23, 2004
6,078
13
Virginia
You know, this whole subject has got me thinkin' of my ABS again. I have been running Rovertracks front HD's in my '91 for almost 2 years(AEU2522 CV's so no abs tone ring) . But, my ABS light has been lit for 6 years! Lucas should make light bulbs, damn thing will never burn out! Any-hoo, dont really know if I have any ABS function or not!!
 
You must log in or register to reply here.
Top Bottom