|
If you are seeing low HPO is can be more than a IPR or HPOP.
Rarely do the HPOP go bad. They may get weak, but that is in the upper rpm's.
I agree with above statement. With the icp out the computer defaults to a specific psi in programing only. So it is basically guessing.
If you know someone with a scanner you can monitor the hpo while opening the ipr with a direct 12v signal. This will eliminate the ipr as a cause if the scanner sees the ipr fully open and there is a bunch of pressure.
If the IPR is stuck it could trick you.
What happened to me recently was a torn injector o-ring. I had one injector stealing the hpo from all the other injectors causing a no start, but it would start on ether. Many people knocked their heads against the wall on it. It was suggested here, but I discounted that due to the o-rings being replaced with-in 75K. Long story short pull a valve cover and see if your loosing alot of oil from one injector v/s the others.
__________________
1996 F-250 extended cab long box five speed. Home made Tymar, 203 Stat, 60 gal in bed fuel cell, 315/75's, no muffler, ebpv welded open 3" to 3" DP, Babies. 290K, still chugging, and still smoking when cold.
UPDATED 1/1/09 Replace so far. 1 LUK flywheel+clutch, 2 thermostats, 2 set of brakes, 1 set of calipers, 5 CPS, 3 sets of tires, 2 Transfer pumps, 1 Injector modual, 1 Computer, 2 Alt, 2 sets of batteries, 1 Water pump, 6 Belts, 1 PS hose, 2 Sets ball joints, 2 set u-joints, 2 carrier bearing, 2 Speed sensors, 1 oil pres sender, 1 temp sender, 4 sets of e-break cables, 1 front fuel tank, 2 rear fuel tanks, 2 set of glow plugs, 7 Glow plug relays, Oil galley o-rings, Turbo pedistal o-rings, EBPV o-rings, 3 sets of Injector O-rings, 1 Vac-pump, 1 new carpet, 1 total paint job.Total $$$ in repairs v/s miles driven = 4.6 cents per mile. Add fuel to that it jumps to 16.5 cents per mile over the life of the truck.
|
