No acceleration

1999 FORD F-350
144,000 MILES • 7.3L • V8 • 4WD • MANUAL
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TANKK2014
  • MEMBER
  • 29 POSTS
Hey. Got a 7.3 diesel that starts and runs great. When you step on the accelerator, it does nothing. Accelerator still has tension but it causes no effect when pressed. Assuming it's electrical because the dash instruments are all not working too. I've checked all the fuses that say "Instrument panel" but they're all still good. Ideas?
Jul 6, 2020 at 1:41 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning,

Are there any codes set? I need you to check.

https://www.2carpros.com/articles/engine-has-low-power-output

A common issue is an APP or acceleration pedal sensor which is the fuel pedal assembly. When this fails, it will set a code.

I attached a wiring diagram for you to view. If you have a voltmeter, we can do some checks.

https://www.2carpros.com/articles/how-to-check-wiring

Roy

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Jul 6, 2020 at 10:02 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,333 POSTS
Lets scan for codes as well.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back.
Jul 7, 2020 at 10:55 AM
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