Removing ABS Parts on 94 bronco

14155 Views 33 Replies 18 Participants Last post by reptillikus, Sep 28, 2017

Bronco85

Discussion Starter · Oct 1, 2010

So I need to upgrade to 1 ton brakes because I'm going to D60 and 10.25.

Will I need to remove all the ABS parts or can I Leave them in? I realize the Sensors will have to go, but can the rest of the parts stay?

1 - 20 of 34 Posts

75F350

· #2 · Oct 1, 2010

It is probably a better idea to just ditch all of the components associated with the ABS if you intend to run rear disc brakes.

By running the front calipers direct, and an adjustable prop valve out back, you can tune your brakes to work like a brand new car with little tires.

Hot ticket upgrades include the F350 booster and master combo. Be aware that there is a different master available for vehicles equipped with cruise control.
Lose the ABS pump and all of the hardware and just run the adjustable prop valve for rear. This is tries and true.

However, you can keep the pump and use the F350 booster and master and leave everything else alone. This works for drum brakes as well as rear discs.
This combo can lock 4 wheel discs up as well, though the pedal is a little lower than it would be if you were to ditch all of the ABS and run the adjustable prop valve.

Rear drums can operate with all of the stock components and can benefit from just a master cylinder upgrade. The booster really only helps with pedal assistance and not much with braking performance.

The right combo has as much to do with your combo as anything else.

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SigEpBlue

· #3 · Oct 1, 2010

If your ABS pump and HCU work, how much to ship to Michigan (49428) ?

stormfinder

· #4 · Oct 1, 2010

SigEpBlue said:
If your ABS pump and HCU work, how much to ship to Michigan (49428) ?

stole my idea lol

Bronco85

Discussion Starter · #5 · Oct 1, 2010

Yep is all works.. Well as far as I remember

I havn't driven or even started the truck in almost a year.

Just wondering if it the parts needed removed or not. I can replace it pretty easy with the lines from my 85 bronco.. But a bit more reading up sounds like in still needs the computer for other stuff to work right..

I was planning on running a new Booster and Master. I may just run the Master since the booster seems pretty good as it is. But for an extra $100 or so, I figured what the hell.

When I originally did the axles in my 85 Bronco. I replaced entire Break set up in the back. I did it over a few weeks. Because I thought disks would be too expensive.. Well it ended up being cheaper.. Live and learn I guess. When This stuff wears out I'll be going Disk.

sackman9975

· #6 · Oct 1, 2010

You can leave the pump in place and just ditch the sensors. The ABS light will be on though.

I currently have no front sensors and still have the pump in place. The ABS module is disconnected at this point and jumper wires are attached to make the speedo still read.

landshark99

· #7 · Oct 1, 2010

iam also interested in this actually, I have a 94 with ABS and about to swing a D60 with discs under the rear and wondering if i can just remove all the ABS equipment from the truck? I already have pulled the relays since one of my front wheel sensors is slightly damaged.

I would regain a little space in the engine compartment I know.. and clean up the wiring a bit, however iam a little cautious due to the computer. If I already pulled the relays will it really make a difference if i remove the hardware? how far can i go in removing stuff?

Bronco85

Discussion Starter · #8 · Oct 1, 2010

sackman9975 said:
You can leave the pump in place and just ditch the sensors. The ABS light will be on though.

I currently have no front sensors and still have the pump in place. The ABS module is disconnected at this point and jumper wires are attached to make the speedo still read.

Do you have any info on the jumper wires that you used? a Picture of this would be awsome.

Thanks.

bossind

· #9 · Oct 1, 2010

I left my abs pump inline, it doesn't do anything without the sensors, its a straight flow through. And I'm running rear disc brakes.

Redbeard Fab

· #10 · Oct 2, 2010

does reomoving the module on a bronco with only rear abs affect the computer at all?

asdaven

· #11 · Oct 2, 2010

The ABS module is a seperate computer from the ECU. Just unplug it. Now, some vehicles the Rear speed sensor is also used for the speedo and maybe cruise control. On my 87, the speedo runs off the transfer case. I just unplugged the ABS module and no lights on the dashboard.

75F350

· #12 · Oct 2, 2010

Understand that the brake system works regardless of any electronics. This brake system is still a simple hydraulic system. If any sensor or electronic component is removed, the brake system still functions as a manual system.

In the event of any electrical failure, the ABS system fails to operate properly. Thats all. The brakes still work as normal, except the ABS no longer works. Thats it.

SAS vehicles can maintain a stock braking system, and the brakes will still work without a sensor. A lack of sensor will only trigger an ABS indication (light) in the dash, and will no longer operate correctly (ABS), but the brakes will still work.
Only the operation of the ABS will be compromised.

Redbeard Fab

· #13 · Oct 2, 2010

I have the VSS in the rear differential. just wanted to make sure eliminating the module wouldnt mess with it. i didnt think it would but figured Id ask

sackman9975

· #14 · Oct 2, 2010

Bronco85 said:
Do you have any info on the jumper wires that you used? a Picture of this would be awsome.

Thanks.

asdaven said:
The ABS module is a seperate computer from the ECU. Just unplug it. Now, some vehicles the Rear speed sensor is also used for the speedo and maybe cruise control. On my 87, the speedo runs off the transfer case. I just unplugged the ABS module and no lights on the dashboard.

You can't just unplug it and expect everything to be ok. On the 93's-96's, the signal for the PSOM goes through the ABS module, with it unplugged the E4OD will not shift unless you jumper the wires as noted above so the speedo works.

Redbeard Fab said:
I have the VSS in the rear differential. just wanted to make sure eliminating the module wouldnt mess with it. i didnt think it would but figured Id ask

Depends on your year.

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lawdog78

· #15 · Oct 3, 2010

5

SACKMAN,

I am a little slow so what are you holding in your hands? I just changed the ball joints on the drivers side and had to destroy the abs sensor. I have to leave Friday for a 12 hour drive to school and don't have the money or time to try to replace the sensor before then. I just need to disable the ABS system until I can get the money and time to fix it. The problem I am having now is the brakes pulsate and I tried to disconnect everything I could so far. Both front sensors have been disconnected, the cable going into the brake booster, the control box on the inside frame...what else? I understand the back brakes use the same cable for the speedo as the ABS? What am I missing and how do I do it? thanks.:banghead

The cable for the rear brakes...do I have to disconnect? Will the speedo work?

Disconnected from the master...

Pass side sensor disconnected...

Driver's side sensor cut...

Computer disconnected on the frame rail...

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SigEpBlue

· #16 · Oct 3, 2010

That's not the 4WABS computer. That is the 2-axis accelerometer (although technically it's just a pair of switches).

lawdog78

· #17 · Oct 3, 2010

Ok if that is not it where do I find it? What is the 2-axis accelerometer? Thanks.

SigEpBlue

· #18 · Oct 4, 2010

Look under the coolant/washer fluid reservoir.

The accelerometers are there to indicate vehicle dynamics to the 4WABS controller, i.e. is the truck actually slowing down, or should something more be done to help stop it?

lawdog78

· #19 · Oct 4, 2010

Ok I saw it. It is right under the washer tank. Thanks. So tomorrow I will disconnect and jump it.

Bronco85

Discussion Starter · #20 · Oct 4, 2010

I've been wondering what that little box in the frame was

Was going to post and ask one of these days...

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