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Help!! Diesel Gurus...
2001 7.3PSD Ford Excursion EB 4x4 - about 180,000 miles and regularly maintained. Occaisionally re-program with PowerChips (tow safe only).
OK, here's the situation. Cold start the truck, purrs like a kitten. Drive to work - 22-25 miles, no issues. On the drive home, after about 15-20 miles, the truck starts missing, losing power, running awful - and eventually dies. If I try to restart immediately - can't keep her running. Wait 25-30 minutes, she starts up and purrs like a kitten for 20-30 minutes, then dies off again.
After 1st time, ran the battery down trying to get her started and out of traffic - no luck. Had to have it towed to the dealership. Dealer has it two days and can't find anything wrong - no codes, nothing. Problem does not occur when they run it 30 minutes or so.
Pick up truck and it does the same thing two days later. Same deal, wait a little while and it starts up and runs fine for 20-30 minutes. After several restarts/die cycles - it won't start at all.
This has happened 5 times now. Seems to happen when the truck heats up (it's been 104+ here). The hotter it gets, the longer "recovery" period.
No codes ever thrown. Dealership is starting to think I'm a raving lunatic because they cannot find a problem and no diagnostic codes - even when it has come in dead on the wrecker.
Dealership keeps saying "they can't fix what ain't broke". Getting tired of breakdowns, tows, or waiting overnight. Getting tired of unreliability and I need the truck in 2 weeks for a long trip with some towing. Scared to leave town in the vehicle.
When dying/running bad/missing - no smoke. Turn key and the tach jumps, so don't think it's CPS (but heck, I don't know).
Unless someone has some ideas, going to have to start throwing parts at it - which is going to get expensive quick and still leave me with a reliability issue.
Some folks are telling me IPR valve would be a good thing to replace first "just for the heck of it", along with the CPS "just in case".
Anyone have ideas or diagnostic tests to run? Dealership seems clueness (but has a VERY good reputation and I've been happy with them for years).
Help in Dallas/Plano!