Join Date: Feb 2013
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When I bought the truck, the guy that sold it to me said "Every now and then it will derate... but you pull over, turn it off, and start it up and it's fine... there was a little nest in the engine compartment so a mouse may have chewed a wire". But the truck was a steal (2000 350 with just over 150,000 miles for 6 grand).
Turns out it was the injector wiring harness that was bad... so some $1,200 later... I lost the derating problem. (did the glow plugs, had injectors cleaned, and new O rings on the injectors while the engine was torn down).
Then one day, I hit a puddle and didn't think much about it, but it had been raining pretty hard... well it Derates again... and I pull over shut it off, fire it up, and still the same. I limp it to a parking lot, and get it towed figuring it's the same problem... after having 2 mechanics look at it, they figured out that the injector control was the issue, and we took it off, put another one on, and it still did the same thing.
Finally out of frustration, he blew everything out to make sure there's a good connection, and it ran perfect.
Man, sometimes I think local cardiologists are doing this stuff to me to try to get my business.
But since I did the liquid electrical tape, I've not had any issues. And we've had some hard core rain.