Troubleshoot & repair my ford truck from (OBD) trouble coeds I scanned.

2001 FORD F-250
120,000 MILES
Avatar
DENNISWHITE
  • MEMBER
  • 1 POST
All at once my 2001 Ford F-250 Super Duty Pickup started to run bad the check engine light came on (OD) light started flashing truck wouldn't shift or accelerate I found 2 blown fuses #7 (HEGO) and #10 (POWER POINT) fuses I replaced both but the #7 (HEGO) keeps blowing I checked the wiring harness & connectors looking for a short but it looked good is there a test to penpoint the exact problem.
Oct 11, 2012 at 8:32 AM
Advertisement
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
either the harnes for the heater circuits for the o2 sensors are shorted or the o2 sensors have an issue. you need an ohm meter to check each sensor to determine the one that has failed.

Roy
Oct 11, 2012 at 10:01 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.