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ABS light and other problems

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Old Jul 20, 2006 | 04:13 PM
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DYDF250
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ABS light and other problems

Help,

one, ABS light is on as I am driving down the road?
two, shifting problems , hard shifting through most gears and down shifts while at a constant speed, no hills, no heavy load
three, overdrive light is/was flashing. Drove home and the light wasn't flashing, trip to town, the light flashed non stop.

tran fluid seems OK ,Bubbles though, still red // stupid dip sticks are so hard to read with that plastic reader on the end.

Thx Mark
 
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Old Jul 20, 2006 | 05:38 PM
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Speed sensor in rear differential is bad. My buddy just had this happen on his Super Duty. Cost like $30.
 
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Old Jul 22, 2006 | 06:24 AM
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My 96 just did the same thing. It was the speed sensor. After I changed it I disconnected the batteries for about 15 minutes to clear it. Runs fine now.
 
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Old Jul 22, 2006 | 11:29 AM
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could also be a fuse for speed controller. check all your fuses. does your speedo work?
 
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Old Jul 22, 2006 | 11:59 AM
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Thanks Guys,

Part replaced, truck is OK again
One question, speed sensor on rear diff is it called VSS or ABS sensor ?

Sensor on the Trans what is it called?
 
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Old Jul 23, 2006 | 04:12 AM
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From: MICHIGAN
Originally Posted by DYDF250
Thanks Guys,

Part replaced, truck is OK again
One question, speed sensor on rear diff is it called VSS or ABS sensor ?

Sensor on the Trans what is it called?
This was copied from a Ford repair manual:
Brake Sensor, Anti-Lock, Rear

The rear anti-lock brake system (RABS) sensor is a coil mounted on the rear axle housing. The RABS sensor ring is mounted on the ring gear in the differential and rotates close to the RABS sensor. As it rotates, the RABS sensor ring magnetically induces an AC voltage into the RABS sensor. The AC voltage is proportional to the rear wheel speed and is used by the anti-lock electronic control module to determine the rate of deceleration of the rear wheels.
 

Last edited by Cuda_jim; Jul 23, 2006 at 04:18 AM.
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