Revs up and down while driving or idling

1995 FORD E-SERIES VAN
100,000 MILES • 5.8L • V8 • 2WD • AUTOMATIC
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CHAMELEON9
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  • 1 POST
Engine sounds like it is revving for about five or so seconds every thirty seconds to a minute, no matter if it is idling or driving.
Jun 11, 2018 at 5:36 PM
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BMDOUBLE
  • ✓ASE Certified Mechanic
  • 1,139 POSTS
  • ASE Certified Mechanic
I have replaced many throttle position sensors for this concern. To verify this is the concern you need to connect a scan tool that is capable of displaying the throttle position sensor volts and mode. Also, more than likely it will not set a trouble code because it is an in spec failure. The bad ones that I have has will show part throttle when the throttle is closed. I hope this helps.
Jun 11, 2018 at 7:44 PM
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