20 Most Recent 2001 Ford F350 Super Duty SuperCab - Page 6 Questions & Answers

sounds like bad battery or dirty connection

Have you tried removing the chip, reseting the pcm, then test drive without the chip, I do not work on diesels but I know I have had some 5.0s with compatibility problems with performance chips, for some reason on select cars the emissions system would through a fit and make the car run like crud with the chip in ran fine with it out although they accused it ran fine for a few months with the chip. if you havent you might try this just to see

does it have acentre bearing in the tail shaft ?if so ,fhat is more than likely the problem .also check that all the tail shaft yoke s are in line,they only have to be 1 spline out togive those symptoms ,a rumble ,is definatly coming from the driveline

http://www.ford-trucks.com/forums/871823-parts-diagram-front-axle.html try this website, about half way down the page there is an exploded view of axle. hope this helps

2001 Ford F-350 Super Duty is available in 5.4L V8 or 6.8L V10 or 7.3L V8 diesel engine, what is yours?

CHECK OUT YOUR CAM POSITON SENDER
I HAVE REPLACED ALOT OF THAM FOR THAT PROBLEM. BUT YOU COULD HAVE A HOST OF OTHER PROBLEMS.

Almost sounds like your climate control switch is bad as it controls everything including the switching and blower speed with the exception of the blower speed being a blower resistor issue (allows multiple speeds).

Check fuses first, then switches on both doors, if nothing still you will have to pull the door panels and inspect the master lock switch (drivers door) and see if anything is loose or corroded.