D1 ABS brakes issue

AbnMike

Well-known member
Apr 6, 2016
1,218
117
Western Slope, CO
Update: it's been more than 2 months of driving with the new ABS sensors installed. Zero ABS warning light illumination, zero pedal sink at slow speed turns, zero unexpected ABS activation. So far, so good. Solution achieved...for now.

Did you just install the front ones or the ones for the rear as well? I keep throwing a rough line fault which indicates mine are bad. The fuse is pulled which I thought would mean it isn't reading those but I guess it is.

Pretty simple to swap out?
 

Tugela

Well-known member
May 21, 2007
4,766
565
Seattle
I only replaced my fronts. Took about ten minutes per side, but I do things slowly. I think I used a panel separator, needlenose pliers, and a screwdriver. And some wire cutters for the old cable ties.
 

WaltNYC

Well-known member
Mar 3, 2010
710
138
NYC
I only replaced my fronts. Took about ten minutes per side, but I do things slowly. I think I used a panel separator, needlenose pliers, and a screwdriver. And some wire cutters for the old cable ties.

You lost me here. Don't you need to remove the two bolts on the top swivel pin in order to get the oil seal, bushing, and ABS sensor out?

Panel separator? I think I am totally misunderstanding this post.
 

Papillon

Well-known member
Dec 19, 2005
97
6
No, you only need a flathead screwdriver to get the ABS sensor out, front or rear.

If you only need to slide the sensor out and then slide a new one in why does the service manual state the following warning?

SENSORS - FRONT
Service repair no - 70.65.32
CAUTION: If a sensor is removed for any
reason, a NEW sensor bush and seal must
be fitted.

Another question: Does the ABS system need to be reset or errors cleared once a new sensor is installed? If so how/where is this done?

Thanks for your help.
 

luckyjoe

Well-known member
Oct 10, 2004
462
129
New Jersey USA
If you only need to slide the sensor out and then slide a new one in why does the service manual state the following warning?

SENSORS - FRONT
Service repair no - 70.65.32
CAUTION: If a sensor is removed for any
reason, a NEW sensor bush and seal must
be fitted...

That's a good question, but so is, "how did I never run into this in 16 years of D1 daily driving?"
 

Tugela

Well-known member
May 21, 2007
4,766
565
Seattle
Also, keep in mind that nearly every section in RAVE starts with:

1. Disconnect negative battery lead.
 

discostew

Well-known member
Sep 14, 2010
7,735
1,026
Northern Illinois
If you only need to slide the sensor out and then slide a new one in why does the service manual state the following warning?

SENSORS - FRONT
Service repair no - 70.65.32
CAUTION: If a sensor is removed for any
reason, a NEW sensor bush and seal must
be fitted.

Another question: Does the ABS system need to be reset or errors cleared once a new sensor is installed? If so how/where is this done?

Thanks for your help.

You can just slide that sensor into the old seal. I don't think I've ever seen one leak out of that seal. I think the abs system will work if it passes it's checks on start up. Just with the old codes stored. Remember that the light will be on till the system sees 8 mph or so.
 

Papillon

Well-known member
Dec 19, 2005
97
6
You can just slide that sensor into the old seal. I don't think I've ever seen one leak out of that seal. I think the abs system will work if it passes it's checks on start up. Just with the old codes stored. Remember that the light will be on till the system sees 8 mph or so.

That's pretty much what I expected. It's just that the Service Manual stressed ('must') the replacement of the seal and the bush and I didn't know why this was so necessary. Still don't for that matter.

One final question, I swear: How do you determine which ABS sensor needs replacement? Is there some testing method?

I'll admit that I'm somewhat of a 'newbe' with Land Rovers. You see, I purchased my Disco new in 1994 and only have 22 years of experience with it. Before that it was Series models which never mattered much anyway. So, please be patient with me. I'll catch on in time.

Thanks discostew.
 

p m

Administrator
Staff member
Apr 19, 2004
15,643
867
58
La Jolla, CA
www.3rj.org
One final question, I swear: How do you determine which ABS sensor needs replacement? Is there some testing method?

I'll admit that I'm somewhat of a 'newbe' with Land Rovers. You see, I purchased my Disco new in 1994 and only have 22 years of experience with it.
You may consider keeping your 1994 around for a while, since at this pace catching up with new stuff might take a while. Nonetheless, here's a description of the fairly simple diagnostic process.
It can be found elsewhere using Google.

That said... I run into the code 2-0, which means some general failure with ABS ECU. I couldn't erase it or get to other codes. Replaced the ECU, to see the same code pop up in another one.
 

WaltNYC

Well-known member
Mar 3, 2010
710
138
NYC
I finally got around to installing new ABS sensors. Snow on Saturday was handled well. ABS activation was, as far as I could tell, appropriate. Never did the system remove all braking pressure, fortunately.

I've put about 100 miles on the truck with the new sensors thus far with no issues.

I did move the clip which attaches under the spring to mimic that of the originals. As they were shipped, the length between that clip and the sensor would have been too short when at full steering lock.
 

Icannap1

Well-known member
Mar 3, 2015
123
21
OC, CA
I also have replaced the two front sensors with great results on my D1 from the link on ebay. No more rapid pulsing from the ABS brakes.