Thought I'd share the latest from the shop.....2008 F250 4X4, 86,000 miles, Would randomly set P0088 (Rail Pressure To High) while pulling a trailer. Flashing in the latest calibration had no effect.
With most Bosch common rail systems the Pressure Control Valve/Solenoid is replaceable/serviceable separately from the HPFP, Unfortunately....The 6.4L uses a Siemens/VDO K-16 high pressure pump & the PCS/PCV is not serviceable, The pump has to be replaced.
I pull the cab to do this....While it's possible to do it with the cab on & I've seen techs do it, I think they must be masochist or something? I'll do a 6.0L HPOP with the cab on, But never a 6.4L HPFP!
This truck belongs to a long time customer of mine, He owns a Fire Sprinkler Installation/Sales/Service company. Usually runs strictly Duramax trucks, But has had some Dodge/Cummins & Ford 6.0L's in his fleet. This was his dad's truck & was inherited after he passed.....The reason for the low mileage.
I tried to talk him into selling it even though it had been maintained very well & never worked hard. Hasn't been 6 months I've replaced the DPF & now the HPFP. Given the DPF was already pretty well dead/loaded from all the short tripping the truck saw early on.
Gettin' ready to pull the cab.....Had to heat the Core Support Mount Nuts with Victor, So I needed to pull the headlight assemblies. The other 4 cab mount bolts came out without drama using my long 1/2" Ratchet. DO NOT use an Impact on these....The caged nut will spin if you do! While the newer trucks (2011 & up) don't have this issue.
With most Bosch common rail systems the Pressure Control Valve/Solenoid is replaceable/serviceable separately from the HPFP, Unfortunately....The 6.4L uses a Siemens/VDO K-16 high pressure pump & the PCS/PCV is not serviceable, The pump has to be replaced.
I pull the cab to do this....While it's possible to do it with the cab on & I've seen techs do it, I think they must be masochist or something? I'll do a 6.0L HPOP with the cab on, But never a 6.4L HPFP!
This truck belongs to a long time customer of mine, He owns a Fire Sprinkler Installation/Sales/Service company. Usually runs strictly Duramax trucks, But has had some Dodge/Cummins & Ford 6.0L's in his fleet. This was his dad's truck & was inherited after he passed.....The reason for the low mileage.
I tried to talk him into selling it even though it had been maintained very well & never worked hard. Hasn't been 6 months I've replaced the DPF & now the HPFP. Given the DPF was already pretty well dead/loaded from all the short tripping the truck saw early on.
Gettin' ready to pull the cab.....Had to heat the Core Support Mount Nuts with Victor, So I needed to pull the headlight assemblies. The other 4 cab mount bolts came out without drama using my long 1/2" Ratchet. DO NOT use an Impact on these....The caged nut will spin if you do! While the newer trucks (2011 & up) don't have this issue.