1997 Ford F-150 O D light flashing Code PO500

Tiny
RJENKINS
  • MEMBER
  • 1997 FORD F-150
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 129,000 MILES
Have changed both speed sensors(transmissions and rear end) and speedometer head. The speedometer needle waves 2-3 MPH sometimes more. The O D light seems to flash around 40 - 55 MPH
Monday, August 16th, 2010 AT 9:55 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
The PO500 is for the VSS. Is the trans shifting normally?
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Monday, August 16th, 2010 AT 11:11 PM
Tiny
RJENKINS
  • MEMBER
  • 2 POSTS
I have replaced the VSS and the ABS/speed sensor, also replaced the speedometer head. The speedometer needle seems to react very slow and waves back anf forth, The transmission is shifting good. (1997 ford f150 4.2 liter 4x4 with a 4r70w transmission) I replaced the gear on the VSS, with a new one, when I pulled the VSS out again and look at the gear, look like something was eating the gear up.
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+1
Tuesday, August 17th, 2010 AT 5:35 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
It must be the gear inside that is causing the problem.
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Wednesday, August 18th, 2010 AT 1:35 AM

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