1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

Losing a sensor?

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Old 10-17-2011, 08:48 PM
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Default Losing a sensor?

4wd ABS and brake light are lit all the time
what's my fix?
 
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Old 10-17-2011, 09:06 PM
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My old man's pick up had a similar issues we finally ended up finding some wires had been cut close to were the main harness for the rear of the truck connects. Check behind the drives side fender well there should be a big connector there, make sure it is good and tight. May want to disconnect and make sure no FOD is in there.

Just a thought.....
 
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Old 10-18-2011, 07:34 AM
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Howdy! Welcome to Diesel Bombers! Enjoy the Site!
 
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Old 10-18-2011, 12:03 PM
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When mine did that, it turned out to be the speed sensor in the rear axle. The ABS box behind the glove box has an OBD function. Taped to a wire bundle below it you will find a single wire with a connector going nowhere. Grounding that wire will make the ABS light flash. The number of flashes are codes for faults it has detected.
 
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Old 10-18-2011, 09:44 PM
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Thanks ill get it patched soon as I get some free time..
 
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Old 10-19-2011, 12:03 AM
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Originally Posted by cougar
When mine did that, it turned out to be the speed sensor in the rear axle. The ABS box behind the glove box has an OBD function. Taped to a wire bundle below it you will find a single wire with a connector going nowhere. Grounding that wire will make the ABS light flash. The number of flashes are codes for faults it has detected.
X2
 
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