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1999 Ford Ranger Bucking on high speed

Tiny
NINA1045
  • MEMBER
  • 1999 FORD RANGER
  • 3.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 133,000 MILES
After auto hits 50 mph and higher, vehicle starts to buck until you go below 50 mph
Tuesday, October 7th, 2014 AT 5:10 PM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Is the check engine light coming on when this happens? Does it ever do it at lower speeds, or when climbing a long hill?
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Wednesday, October 8th, 2014 AT 5:32 PM
Tiny
NINA1045
  • MEMBER
  • 3 POSTS
No the light does not come on, it did before changing the speed sensor, now the light is off and the bucking after 50 mph is going on, changed plugs, wires, and speed sensor.
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Wednesday, October 8th, 2014 AT 6:35 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Has this problem just started since the VSS was replaced? If so, is it shifting properly? Is the speedo working properly?
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Thursday, October 9th, 2014 AT 5:23 PM
Tiny
NINA1045
  • MEMBER
  • 3 POSTS
No, it did it before, the first speed sensor was broke, it was replace and is fine, the bucking was before that's why we changed it.
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Friday, October 10th, 2014 AT 7:47 AM

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