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lost over drive

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Old Jun 10, 2007 | 01:09 PM
  #1  
offroadjunkie5551's Avatar
offroadjunkie5551
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lost over drive

Driving today and it just woul not shift into od. like it is not even tring hen the od light started blining. TC? Or internal probs. 01 f350 105000mi 7.3. any ideas.
I hope something simple.
 
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Old Jun 10, 2007 | 01:15 PM
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Uzumati
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From: Central, Al
Could be something as simple as the VSS on the rear diff, but you need to get the codes read to point in the right direction.

Has it been somewhat "slamming" into OD lately?
 
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Old Jun 10, 2007 | 01:24 PM
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it has been working great. we slowed down in town and when got back on the hiway it was gone. no warning.
 
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Old Jun 10, 2007 | 02:39 PM
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clintbonnie
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From: Ardenvoir, Washington
For only $10.49 you can get a new VSS (located on top of your rear-end) from www.napaonline.com P/N 530780 (Napa calls it a ABS sensor).. Mine went bad at 65K and i replaced the sensor and it has been good for over a year now..
 
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Old Jun 10, 2007 | 05:49 PM
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puled a 603 code and a 783 code. seems like the tc does not lock up. at 65 mph it turns around 2400 rpm and when you let off the rpms drop to idel and you free wheel.
 
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Old Jun 10, 2007 | 06:04 PM
  #6  
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Uzumati
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From: Central, Al
P0783

P0783 a SSA, SSB or Internal Transmission Components 3-4 shift error. Engine rpm drop not detected when 3-4 shift was commanded by PCM. Incorrect gear selection depending on failure mode and transmission range selector lever position. Refer to the Solenoid Operation Chart. Shift errors may also be due to other internal transmission concerns such as stuck valves or damaged friction material. May flash TCIL.
 
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