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Old 02-27-2014, 08:59 AM
Marguerite88 Marguerite88 is offline
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Default '91 ABS dump valve/ brake proportioning valve?

Hello! I'm new to this forum and truck forums in general. I love my 1991 Ranger, bought it 2 years ago off craigslist for 600 bucks. It's had a host of problems since then and I've paid a small fortune to fix them over time. Usually stuff with rear brakes. Just had the entire rear brake system redone 4 months ago, replaced the transmission about 6 months ago. All in all I can't afford a new truck but can afford a bunch of ridiculous 500 dollar fixes spread out over time.

The new problem is that my ABS dump valve (brake proportioning valve) has a leak. My mechanic is saying that the part is impossible to find and he's never seen it go out on a ranger. He found the part for like 700 dollars but says it isn't worth it with labor. My question is:

Can I ask him to bypass it? Is that possible? Or safe, even? I use it as a work truck but occasionally take it on the interstate. Alternately, can I get this part at a pull-a-part?

I apologize for just jumping in to asking questions. It's hard finding a mechanic/ solid advice in New Orleans. I'm a 25 y/o woman and feel like I'm probably being financially taken for a ride all the time because I look like I don't know anything (they're right...). I don't want to scrap my truck over a small problem but can't pay 800 bucks. Help!
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Old 02-27-2014, 09:36 AM
cvar cvar is offline
Ford Ranger Driver
Join Date: Jun 2012
Posts: 1,319
Default Re: '91 ABS dump valve/ brake proportioning valve?

Yes, you can bypass the RABS, using a simple $5 brake fitting adapter to attach its input tube to its output tube. Leave its electrical connector connected. See <== CLICK

Personally, I'd replace the RABS valve. Many Rangers are being parted out, so this part is readily available for under $50. Search ebay for "ranger abs valve" to find nicer remanuf ones. Or just Google "cardone 12-2029"
1997 4x4 Mazda B4000 SE, Ext.Cab

Last edited by cvar; 02-27-2014 at 09:42 AM.
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Old 03-24-2014, 06:42 PM
partsman65 partsman65 is offline
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Join Date: Jun 2013
Posts: 19
Default Re: '91 ABS dump valve/ brake proportioning valve?

I just bypassed the rabs valve on my wifes 94 Ranger--it was a pain because I had to run all new line from master cylinder to rear wheel cylinders but worth the work.
1993 Ranger XLT Supercab
2.3L 5 speed
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1991 ranger, abs, dump valve

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