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Can I disconnect my ABS?

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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RyanGLT
Posts: 185
Joined: 6 November 2010
Year and Model: '07 XC90 V8 AWD
Location: Topeka, KS

Can I disconnect my ABS?

Post by RyanGLT »

Is it possible to just simply disconnect the ABS system or take a fuse out? I need to have mine rebuilt but in the meantime it is driving me nuts.

Thanks,
Ry
'07 XC90 V8 AWD

Matty Moo
Posts: 1810
Joined: 12 October 2008
Year and Model: 850, 1996
Location: Ann Arbor, MI
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Post by Matty Moo »

If your lights are already on, they're going to stay on whether you pull the fuse or not. The lights won't go away until you get the module fixed.
Image
http://www.midwest-abs.com
Simplycleanpowerwash.com

1996 850 Platinum Wagon. ARD Green Tune, OBX.-Gone
1998 s70 ARD tune, EST exhaust, SE/R interior.
1999 s70 Plain Jane.
2000 s70 GLT
2014 Ram
2012 Jeep Wrangler Unlimited

jmailloux
Posts: 74
Joined: 26 January 2010
Year and Model: V70R 1998 Silver
Location: San Diego

Post by jmailloux »

I would pull the fuse, pull the ABS module, bag the big electrical connector to the ABS and bag the bottom of the master cylinder where the ABS module bolts into, to keep any dirt, etc out, and send that ABS module off. Car brakes fine, just old school. Live with the lights long enough to get the module fixed and put back in, and be done. It's the only was I know of get those lights to turn off. I used Module Master and I was happy with the service, but Matty Moo has gotten great reviews and looks to be cheaper.
Jim.
_____________________________
1998 V70R Silver 180k

jblackburn
MVS Moderator
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Year and Model: 1998 S70 T5
Location: Alexandria, VA
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Post by jblackburn »

I'd get it repaired as soon as you can, it may save your life soon ;)

https://www.matthewsvolvosite.com/forums ... =4&t=34159

$60 is a very, very reasonable price.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

RyanGLT
Posts: 185
Joined: 6 November 2010
Year and Model: '07 XC90 V8 AWD
Location: Topeka, KS

Post by RyanGLT »

Well maybe I'll pull it tomorrow.

Actually last night after I'd posted this I looked at the "fix" in the database. I'm very well versed in electronics and the use of soldering irons/pens so I very well may be able to do it myself. Also, I'm about as poor as you can be without being impoverished. Even 60 dollars for me is a lot of money I don't have. Now solder and a few tools...I already have.

I guess the reason I wanted it "off" is because it keeps turning on. not only do the lights flicker but sometimes when I brake it comes on when it shouldn't be coming on. AAAAAAnnoying.

Thanks. :-)

Ryan
'07 XC90 V8 AWD

Ozark Lee
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Post by Ozark Lee »

Ryan,

If you can solder you can do the job. Get a good hot iron (at least 45 Watt) to go after the terminals that go to the modulator pump. A 25 watt iron is fine for the smaller terminal connections.

The loss of the module really isn't that big of a deal if you learned to drive in the days before ABS - we learned to pump the brakes to keep the wheels from locking up. Locked up wheels are like trying to turn a Jet Ski with no power, you can turn the wheel (handlebars) all you want but the vehicle is not going to change direction very much.

In many ways - to my mind - ABS is a pain since once it starts buzzing it changes my pedal feel. That and the buzzing distracts me and takes away my normal (instinctive) reaction that I would have used on my '69 AMX back in the day to keep from slamming into the guy in front of me.

If you don't feel up to the job Matty Moo is a stand up guy and he will take care of you.

...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
Previous:
1999 V70XC - Nautic Blue - Totaled while parked.
1999 V70XC - RIP - Wrecked Parts Car.
1998 S70 T5
1996 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe

thecheat
Posts: 533
Joined: 9 July 2010
Year and Model: 1996 850 Turbo Wagon
Location: Sunrise, FL

Post by thecheat »

The repair is very easy, you just need to have a little 20ish watt pencil for the small leads and a bigger (150ish watt) gun for the larger power pins.

Hard part is getting it out...I managed to get an angle on the bolts by using a 1/4" wrench around something like this:

Image

If you have a teensy tiny 1/4" ratchet that might work as well but I didn't and I don't think you would have too much room. This adapter works because the closed end of the wrench is at an angle which brings the end of the wrench closer and gives a bit of clearance. Fortunately the bolts only need to be broken loose and then they spin out... well mine at least!

Matty Moo
Posts: 1810
Joined: 12 October 2008
Year and Model: 850, 1996
Location: Ann Arbor, MI
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Post by Matty Moo »

You have a 96. They have the shitty wiring harness between the module and the pump where the insulation likes to flake off the wires.

Since you have flickering lights, check that first. IF it's bad, wrap some wire tape around each wire individually.
Image
http://www.midwest-abs.com
Simplycleanpowerwash.com

1996 850 Platinum Wagon. ARD Green Tune, OBX.-Gone
1998 s70 ARD tune, EST exhaust, SE/R interior.
1999 s70 Plain Jane.
2000 s70 GLT
2014 Ram
2012 Jeep Wrangler Unlimited

RyanGLT
Posts: 185
Joined: 6 November 2010
Year and Model: '07 XC90 V8 AWD
Location: Topeka, KS

Post by RyanGLT »

Matty Moo wrote:You have a 96. They have the shitty wiring harness between the module and the pump where the insulation likes to flake off the wires.

Since you have flickering lights, check that first. IF it's bad, wrap some wire tape around each wire individually.
Well, they aren't flickering persay, but they go on and off very sort of randomly while I'm driving. There's no rhyme or reason to it. Thanks for the heads up, I'll check it out tomorrow.
'07 XC90 V8 AWD

patrioty3k
Posts: 134
Joined: 23 December 2008
Year and Model: 1995 850 Turbo Wagon
Location: Southwick Ma.

Post by patrioty3k »

Which fuse to pull for abs?Been acting up for awhile. Grinding and pulseing at stops....believe it or not no abs light on! Thanks...
1995 850 Turbo S/Wagon,Alpine head w/Sirius Sat. Radio--"OCTANE" power!
200K $400 Sleeper...nuff said!

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