My truck is shutting off randomly again :(
#11
03-31-2016, 06:59 AM
#12
03-31-2016, 07:13 AM
Diesel Enthusiast
Until I can get the clear fuel line and fuel pressure gauge installed this will have to do.
I also suspect there might be a fuel supply issue that is causing all the problems.
To repair it properly the entire fuel supply system needs to be reengineered on these trucks.
I also suspect there might be a fuel supply issue that is causing all the problems.
To repair it properly the entire fuel supply system needs to be reengineered on these trucks.
Thats bullshit.. All thats required is a competent shade tree mechanic with a clear understanding of the 6.5 operationg systems, and given regular maint and proper repairs whenever necessary.. All to often people neglect the fuel supply system, assume its all good until it literally pees on the ground to offer them a clue..
As for the apparent fix with the new PMD. OF COURSE IT WILL FIX S'IT, IF ONLY FOR A DAY.
If theres an undiagnosed fuel deficiency afoot, it may take a day, a week, a few months, a year or more, DEPENDS largely on the FREQUENCY and SEVERITY of the fuel supply deficiencie(s) before the symptoms start to resurface...
ITS ELECTRONIC FATIGUE that kills the PMDs, NOT EXCESSIVE ENGINE HEAT but it makes for a great tale.
#13
03-31-2016, 07:22 AM
#14
03-31-2016, 07:37 AM
First off his symptoms were classic pmd. It was a no brainier once he said it was in the engine compartment when he go the truck and moved that pmd to the bumper, it's on borrowed time and he should have a spare to try anyways.
The dtech pmd is actually found on most GM reman ip's now due to high failure rate of the fabled grey pmd. The flight systems was redesigned 2-3 yrs ago. The lifetime warranty is a good deal if you are keeping the truck for a long time, most warranty is non transferable so that's not a factor when selling or buying.
The fuel system does need a redesign. Make a draw tube or delete the tank sock, add a 10 micron filter pre lift pump, find a flow on fail lift pump that can hold over 2psi at fuel throttle preferably hold a steady 8-12psi, add a 2 micron filter before the injection pump, fuel pressure gauge after the filter, and feed the beast inlet on the IP.
The lift pump needs to be ran off a relay triggered by a relay.
The guy I posted above (Leroy @ leroydiesel.com) was the original pmd relocation guy that builds his own harness and started the idea of mounting it in the bumper.
IMO the waste gate is fine in its operation but the turbo itself is junk.
The dtech pmd is actually found on most GM reman ip's now due to high failure rate of the fabled grey pmd. The flight systems was redesigned 2-3 yrs ago. The lifetime warranty is a good deal if you are keeping the truck for a long time, most warranty is non transferable so that's not a factor when selling or buying.
The fuel system does need a redesign. Make a draw tube or delete the tank sock, add a 10 micron filter pre lift pump, find a flow on fail lift pump that can hold over 2psi at fuel throttle preferably hold a steady 8-12psi, add a 2 micron filter before the injection pump, fuel pressure gauge after the filter, and feed the beast inlet on the IP.
The lift pump needs to be ran off a relay triggered by a relay.
The guy I posted above (Leroy @ leroydiesel.com) was the original pmd relocation guy that builds his own harness and started the idea of mounting it in the bumper.
IMO the waste gate is fine in its operation but the turbo itself is junk.
Last edited by Tanman_2006; 03-31-2016 at 07:39 AM.
#15
03-31-2016, 07:38 AM
Diesel Enthusiast
So are you wanting maximum power or maximum fuel economy?
The 6.5 was touted as a light duty diesel engine with a strong emphasis on fuel economy.
It was never intended to be compared to, compete with, nor should it ever be confused with those other diesels that OWE the 6.5TD some recognition for igniting the diesel power WARS since the others couldnt compete with the 6.5s economy, then as now.. same as it ever was..
If you wanted a powerhouse, you should of bought an other diesel as no amount of re-engineering will ever make the 6.5 as tough as them others that sling transmissions and driveshafts on a regular basis when pushed to hard.. Not reliably anyway..
GM got the balance of power vs drivetrain durability or reliability perfect, the 6.5 will never overpower the driveline, 4L80E or 14 bolts
The 6.5 was touted as a light duty diesel engine with a strong emphasis on fuel economy.
It was never intended to be compared to, compete with, nor should it ever be confused with those other diesels that OWE the 6.5TD some recognition for igniting the diesel power WARS since the others couldnt compete with the 6.5s economy, then as now.. same as it ever was..
If you wanted a powerhouse, you should of bought an other diesel as no amount of re-engineering will ever make the 6.5 as tough as them others that sling transmissions and driveshafts on a regular basis when pushed to hard.. Not reliably anyway..
GM got the balance of power vs drivetrain durability or reliability perfect, the 6.5 will never overpower the driveline, 4L80E or 14 bolts
#16
03-31-2016, 07:41 AM
Diesel Enthusiast
First off his symptoms were classic pmd. It was a no brainier once he said it was in the engine compartment when he go the truck and moved that pmd to the bumper, it's on borrowed time and he should have a spare to try anyways.
The dtech pmd is actually found on most GM reman ip's now due to high failure rate of the fabled grey pmd. The flight systems was redesigned 2-3 yrs ago. The lifetime warranty is a good deal if you are keeping the truck for a long time, most warranty is non transferable so that's not a factor when selling or buying.
The fuel system does need a redesign. Make a draw tube or delete the tank sock, add a 10 micron filter pre lift pump, find a flow on fail lift pump that can hold over 2psi at fuel throttle preferably hold a steady 8-12psi, add a 2 micron filter before the injection pump, fuel pressure gauge after the filter, and feed the beast inlet on the IP.
The lift pump needs to be ran off a relay triggered by a relay.
The guy I posted above (Leroy @ leroydiesel.com) was the original pmd relocation guy that builds his own harness and started the idea of mounting it in the bumper.
The dtech pmd is actually found on most GM reman ip's now due to high failure rate of the fabled grey pmd. The flight systems was redesigned 2-3 yrs ago. The lifetime warranty is a good deal if you are keeping the truck for a long time, most warranty is non transferable so that's not a factor when selling or buying.
The fuel system does need a redesign. Make a draw tube or delete the tank sock, add a 10 micron filter pre lift pump, find a flow on fail lift pump that can hold over 2psi at fuel throttle preferably hold a steady 8-12psi, add a 2 micron filter before the injection pump, fuel pressure gauge after the filter, and feed the beast inlet on the IP.
The lift pump needs to be ran off a relay triggered by a relay.
The guy I posted above (Leroy @ leroydiesel.com) was the original pmd relocation guy that builds his own harness and started the idea of mounting it in the bumper.
#17
03-31-2016, 07:45 AM
#18
03-31-2016, 07:53 AM
He has built a relocation kit for at least 10 years (that's when I got on forums).
He also sells a complete fuel system kit just like I posted above so yes I do believe he has the fix for those half *** attempts to trouble shoot the system.
#19
03-31-2016, 10:22 AM
Diesel Enthusiast
I thought the inventor guys name was applesauce 
J/K. Hold no grudge or ill will towards Leroy or Walt or Kennedy or anyone supporting the 6.5 platform and wish them all the best in all his business endeavours, Im just not buying no more PMD tales and neither should anyone else.
Wait for the report..
J/K. Hold no grudge or ill will towards Leroy or Walt or Kennedy or anyone supporting the 6.5 platform and wish them all the best in all his business endeavours, Im just not buying no more PMD tales and neither should anyone else.
Wait for the report..
#20
03-31-2016, 10:28 AM
