So on my way home early this week the CEL came on and the truck just died. After coasting to the side of the road it fired right back up. I drove home replaced the CPS with a new Motorcraft spare, cleaned the bowl and put in a new filter, changed the oil, and ordered an AutoEnginuity scanner from Riffraff. The codes set were P0603 and P1212 (ICP pressure lower than desired) which I think is the most relevant one. Here are the results of my troubleshooting so far (trying to duplicate the Riffraff ICP/IPR troubleshooting example).
------------------------ICP-----ICP--------ICP
-----------------RPM--Volts---Pressure---DC%
KOEO.............0.0--4.73-----0.0-------14.84
@Idle............650--4.73-----724-------14.45
Above Idle....1580--4.73-----738-------12.50
This BTW is from my signature truck. Truck was not fully warmed up, just idled a little prior to test. These numbers don't mean much to me. The ICP volts look very suspicious... they are nothing like example AE screen shots on the Riffraff website. So any light you guys could shed on these numbers would be greatly appreciated. I'm really puzzled about the ICP voltage... is this the PCM taking over after it sensed an error condition? Next steps? Jim
------------------------ICP-----ICP--------ICP
-----------------RPM--Volts---Pressure---DC%
KOEO.............0.0--4.73-----0.0-------14.84
@Idle............650--4.73-----724-------14.45
Above Idle....1580--4.73-----738-------12.50
This BTW is from my signature truck. Truck was not fully warmed up, just idled a little prior to test. These numbers don't mean much to me. The ICP volts look very suspicious... they are nothing like example AE screen shots on the Riffraff website. So any light you guys could shed on these numbers would be greatly appreciated. I'm really puzzled about the ICP voltage... is this the PCM taking over after it sensed an error condition? Next steps? Jim