Update: Interesting observation today while running same route from Grasonville, MD through mountains of MD, WV, PA...the route that tripped the P00087 countless times in July with a SeaRay 310 (12000#) in tow at 85F outside temps.
Today was a Chaparral 350l, tipping the scales closer to 15K#, but the outside temps ranged from 14f to an icy 9f.
You guessed it...no matter how hard I drove the truck (extended 4th gear, 3000rpm charges up 8% grades to maintain 55mph, passing semis with their flashers on one after another) I never set the code all day.
So...it may be a worn injector situation that causes the high return rates, that heats up fuel, that contributes to low rail pressures...BUT...the biggest cause is
HOT FUEL. (period)
Somebody make a bigger undercarriage mounted fuel cooler with fan assist and I think you'd narrow the window considerably, if not eliminate it entirely, throughout the lifespan of the injectors. I have 155K on my originals and they are running as strong as day one. Not touching a thing, certainly not for a pesky code where I can push a button and 'fix' the programming error. Its certainly not worth installing new injectors to fix, at least not in my case which is towing heavy on hot days in the hills.
I know...how about we programmatically correct this bug in the ECM?
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