Hi Guys, Thanks for the responses.
Only code I have ever seen during this is "Too low or too high ICP". This thing has been so intermittent that sometimes it will occur several times during 1 day and then may not miss a beat for several months. I have checked the connectors but not found anything there. The CPS went bad a couple of years ago, was replaced with a blue one, then Ford stole that one for one of the gray ones during the recall. I have changed the gray one for another once since then to check that out. Found the ICP sensor plug full of oil once so replaced the sensor, also rebuilt the ICP Regulator recently. Pulled the valve covers to check the harnesses, couldn''t find anything visually, but the right one was all over the place on two injector ground leads when I did an ohmeter check so replaced it. Put clip on the left one. Apparently lost a glow plug right after that, haven't replaced it yet, have a new set ready to go in, so I will have the covers off again very soon. I have worked at the PCM connector a while back when I installed the BD Exhaust Brake Controller. Connected a bunch of new wires to the leads there, but I think theis problem was occurring before I did that. Hard to remember anymore. Bought a scanner that I thought was going to do everything, an Innova, but it turns out that it won't do the function tests on the diesel, so I haven't been able to do a Buzz test or a Contribution test. I am about ready to make an appointment with John Wood and hope he can find something, if I can't find the answer soon.
It has been driving my wife nuts when she drives it and it stumbles. The other part of this problem is that it will seem to be accelerating from a stop like its not under full power, and then all of a sudden it will turn on and take off like you just stomped the go pedal down a bunch. Really strange thing came up yesterday. About 2 weeks ago she went to a Dr. appointment. When she got home she said it had stumbled again, first time in about 3 weeks. She said it did it as she was coming up the freeway on ramp and again as she was climbing a grade that is about 1/2 way home. Yesterday we had to go to the Dr. again in the same hosp., and I was driving. It stumbled in the exact same locations as it did when she was driving 2 weeks ago, on the ramp and on the grade.
All help is greatly appreciated, believe me.
Just thought of something more. 3 times during this time of terror, while accelerating from a stop, one time while under full throttle, it was as if I was bouncing my foot on and off the pedal. Felt almost like a total shut off, not like 1 injector or such but like the throttle was going from open to closed, really bucking, especially the time I had it hammered, but I couldn't back off because I was getting into a fast line of traffic. I just had to keep my foot in it and let it buck until I got in line or I would have caused an accident. It must have really looked strange to the people behind me. I felt very lucky that I didn't get hit with it turning off and on.
2002 Ford F-350 Lariat Crew-Cab Long Bed 7.3L PSD Automatic 4X4 SRW
Pillar Mount Gauges, Bilstein Shocks, Tow Beast Hitch
AMSOIL By-Pass Oil Filter, AirRaid Intake w/AMSOIL Dry Filter
Pinnacle 4" Exhaust by Jerry Jardine
Dieselsite 6-pos chip, High-Pressure Oil Cross-over, AIH Plug
Mechanical Wastegate Controller, BRV
Coolant Filter, 203 Stat, EVANS NPG+ Waterless Coolant
Trans Command, Ext. Trans Filter, Mag-Hytec Pan & Rear Diff Cover
AMSOIL Lubricants and Filters
Last edited by johns4dor; 09-03-2009 at 05:19 PM.
Reason: Add more info