Engine Quits at wrong times

[Field Worker]

Hello all!

2000 F-250 7.3 Super Duty

I have 258,000 on it and had only a few minor problems since I purchased it new.

Back in January, It died while driving, had it towed to the dealership. They said it was a loose wiring harness under the left side valve cover, so they replaced it, then changed the fuel filter and added something to the fuel tank. (probably my credit card) They also put on another CPS (this is the second one installed now) Now it has run fine until a couple of weeks ago, its doing the same thing only this time it does not completely shut down and it acts like it running on two cylinders. I turn it off and restart it as if it was the first time in the AM and it will run fine, sometimes for days without dieing. I changed the fuel filter (the bowl was full after sitting a week) This past weekend I let the wife drive it to our camp spot (wrong idea_ EAR MUFFS ANYONE?) it would die if I hit a hard bump in the road while headed up hill. I could be at a stop light and when starting to move it would do its thing again and last night I pulled out from my drive and it died again but has run fine today.

Any input would be helpfull

[ATCKing]

Originally Posted by Field Worker

Hello all!

2000 F-250 7.3 Super Duty

I have 258,000 on it and had only a few minor problems since I purchased it new.

Back in January, It died while driving, had it towed to the dealership. They said it was a loose wiring harness under the left side valve cover, so they replaced it, then changed the fuel filter and added something to the fuel tank. (probably my credit card) They also put on another CPS (this is the second one installed now) Now it has run fine until a couple of weeks ago, its doing the same thing only this time it does not completely shut down and it acts like it running on two cylinders. I turn it off and restart it as if it was the first time in the AM and it will run fine, sometimes for days without dieing. I changed the fuel filter (the bowl was full after sitting a week) This past weekend I let the wife drive it to our camp spot (wrong idea_ EAR MUFFS ANYONE?) it would die if I hit a hard bump in the road while headed up hill. I could be at a stop light and when starting to move it would do its thing again and last night I pulled out from my drive and it died again but has run fine today.

Any input would be helpfull

sounds like loose wires, did they replace both harnesses and plugs on both valve covers?

[sldghamr]

agreed w/ above post, check wiring.

[Field Worker]

I believe they only changed the one side, looks like I need to dig into the right side.

How much junk to I need to remove to get access to this cover? would I need to remove the A/C completely?

My truck had a bit of a time starting this AM. There were no rpm's showing when it was cranking but just before it fired up the rpm's started to show. Any ideas?

[sldghamr]

no tach movement on a 7.3L means bad Cam Sensor. suggest changing it, a couples minutes & some a couple $$ at the dealership.