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2004 F550 6.0 diesel 220k miles intermittent no start, highway buck/jerk/black smoke
so far Ive replaced; injectors 1,3,4,7, HPOP and solenoid, fuel pump and new regulator kit, HPO sensor, EP sensor, EGR cooler and oil cooler
buck/jerk/black smoke on highway goes away when BARO sensor is unplugged. replaced. no change.
intermittent no start( hot, cold, warm-- no bias). starts when exhaust pressure sensor is unplugged or with a shot of ether. installed relay to "unplug" EP sensor only when cranking--this worked great for 2 days and now i have same intermittent no start and overboost(35 psi on hiway) this blew a charge air hose. highway Buck/jerk/black smoke goes away completely when brand new BARO sensor is unplugged. im about to change my VGT actuator. anybody have any idea whats next when this doesn't work?
Last edited by dfarryessir; 06-25-2012 at 07:21 AM.
Reason: forgot BARO sensor