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89 Ranger 4x4 rear antilock light


stormy663

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I have owned this trck for about a year now and have been troubleshooting this problem all along. I have replaced the sensor, the master cylinder, front calipers and have conformed that all of the lines are good as well as the rear drum assembly.

When I replaced the rear diff sensor the light went our for about a day. It is back on.

What am I missing?
 


driveoverit

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the RABS module on the frame rail???
 
Jspafford

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Could be that module. Mine was leaking when I checked it. Be careful with the brake lines, if they were like mine, they will be brittle.
 

stormy663

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it is the only thing that I have not replaced. I will have to see if there is a rebuild kit or try to find one that is not $300
 

jarz21

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The RABS hydraulic valve unit (mounted on the frame rail) should only range in price from $100 to $150 new. I'm not sure who is trying to scam you for $300. Does that also includes labor? Unless you're worried about brittle, rusty brake lines, it really does appear to be a straightforward and easy job. I've got to replace the unit on my '92 Ranger.
 
metalmacguyver

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Jspafford said:
Could be that module. Mine was leaking when I checked it. Be careful with the brake lines, if they were like mine, they will be brittle.
Click to expand...
dont be careful. be agressive with the lines. if they are brittle, then that means they are primed to fail. replace them before they do. otherwise they might fail when your in the 3rd lane on the highway doing 85 like they did for me.
 

stormy663

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The brake lines are in excellent condition so they are not a worry. It looks like the problem has been the master cylinder. The replacement that I bought earlier is a dud. It had a slow internal leak.

Thanks for the advice everyone.
 
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