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Old Apr 2, 2026 | 07:33 PM
  #1  
Heffd's Avatar
Heffd
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8th Gear
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Stalls in every gear.

99 f250 5.4 2v 4x4
Starts and idles perfectly, engages every divit on tree, when in r,d,1,2 barley moves when reving rpms, before stalling, starts right back up repeating every time.
Codes 0500
Inspected wiring harness at every transmission connect, to rear differential. Replaced speed sensor on rear differential, no change in performance.
Code 0500 remains.
 
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Old Apr 4, 2026 | 01:07 PM
  #2  
Mark Kovalsky's Avatar
Mark Kovalsky
Frmr Ford Trans Engr
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What does "inspected wiring" mean? Is there continuity from one end to the other? Is there a short to ground? Is there a short to power?

How is the trans fluid level? Does it have a burnt smell? Is it red, brown, or black?
 
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Old Apr 6, 2026 | 01:37 AM
  #3  
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Heffd
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8th Gear
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Inspected as a n looked them over for skinned or brittle wires and clips from all connects on transmission, transfer case, and rear differential.
Trans fluid is red.no smell, no metal or anything.
 

Last edited by Heffd; Apr 6, 2026 at 01:39 AM.
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Old Apr 6, 2026 | 09:06 PM
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Mark Kovalsky's Avatar
Mark Kovalsky
Frmr Ford Trans Engr
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Then you don't know if the wiring is good or bad. You should check what I outlined above.
 
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