threeboogitys
SDD Junior Member
Hello,
I have a '95 PSD that I use to make my living with. On Thanksgiving Eve (9pm), with no prior warning, it died at 65 mph as if I had turned the key off. It has yet to re-start. After much repetitive cranking with very good batteries,, but giving no results,,, it was presumed that it was a faulty CPS. Although my experience with CPSs have always been with them giving gradual warning signals (die, but eventually re-start) before completely dying forever. I spent the remainder of the night and half of turkey day away from home awaiting a friend to rescue and trailer me the 100 miles back home.
Upon arrival a scanner was used,, giving us a CPS code. Great,, as hoped and suspected, we found the problem! A new CPS from International (the correct one for my year model)was purchased and installed. No more CPS code (nor any others),, ,,,,,,,,,,,but still no start!
Things that were also checked previously on the side of the highway were once again checked,, resulting in no problem areas..
Dipstick and HPOP reservoir is full. All fuses and relays,, inside and underhood,, are good and GPR works correctly. Fuel in the filter housing is full and replenishes fully after the water drain is opened to empty.
Next.. On to the FPR. The screen was removed and found to be clogged. Alright!! Thinking we had found the no-start problem again!! It was cleaned and replaced. Plenty of fuel comes from the schrader valve when pushed in. But,, still no start and still no codes on the scanner!
Not completely trusting the scanner capabilities,, and having a 97 model also (that runs fine),, the IDM and PCM were then swapped one at a time to both trucks. Still no start (or codes other than the tranny differences) on the 95, but the 97 started and ran as usual.
Next and currently,, we are looking at possible problems with the high pressure oil system. The hose coming out of the HPOP that feeds the right head was removed from it's fitting at the pump,,and replaced with a hose connected to a 5K gauge. The original line to that right head was capped. For ease of removal, the left hose was removed at the valve cover and capped there. The engine was cranked repetitively,, but showed no reading at all on the gauge.
Have I hooked this up correctly toward determining what should be deadhead pressure at the HPOP, or have I possibly missed something else in narrowing all this down to being a faulty HPOP?? Or could it instead still only be the IPR not allowing the HPOP to build pressure?
Any knowledgeable input toward this will be greatly appreciated.
Thanks
I have a '95 PSD that I use to make my living with. On Thanksgiving Eve (9pm), with no prior warning, it died at 65 mph as if I had turned the key off. It has yet to re-start. After much repetitive cranking with very good batteries,, but giving no results,,, it was presumed that it was a faulty CPS. Although my experience with CPSs have always been with them giving gradual warning signals (die, but eventually re-start) before completely dying forever. I spent the remainder of the night and half of turkey day away from home awaiting a friend to rescue and trailer me the 100 miles back home.
Upon arrival a scanner was used,, giving us a CPS code. Great,, as hoped and suspected, we found the problem! A new CPS from International (the correct one for my year model)was purchased and installed. No more CPS code (nor any others),, ,,,,,,,,,,,but still no start!
Things that were also checked previously on the side of the highway were once again checked,, resulting in no problem areas..
Dipstick and HPOP reservoir is full. All fuses and relays,, inside and underhood,, are good and GPR works correctly. Fuel in the filter housing is full and replenishes fully after the water drain is opened to empty.
Next.. On to the FPR. The screen was removed and found to be clogged. Alright!! Thinking we had found the no-start problem again!! It was cleaned and replaced. Plenty of fuel comes from the schrader valve when pushed in. But,, still no start and still no codes on the scanner!
Not completely trusting the scanner capabilities,, and having a 97 model also (that runs fine),, the IDM and PCM were then swapped one at a time to both trucks. Still no start (or codes other than the tranny differences) on the 95, but the 97 started and ran as usual.
Next and currently,, we are looking at possible problems with the high pressure oil system. The hose coming out of the HPOP that feeds the right head was removed from it's fitting at the pump,,and replaced with a hose connected to a 5K gauge. The original line to that right head was capped. For ease of removal, the left hose was removed at the valve cover and capped there. The engine was cranked repetitively,, but showed no reading at all on the gauge.
Have I hooked this up correctly toward determining what should be deadhead pressure at the HPOP, or have I possibly missed something else in narrowing all this down to being a faulty HPOP?? Or could it instead still only be the IPR not allowing the HPOP to build pressure?
Any knowledgeable input toward this will be greatly appreciated.
Thanks
