Well, I am still at it. The truck is still missing badly under a load. This is what I have done. New OPS, new LP. and fuel Filters. The fuel in the filter bowl is good and clear, no sign of water, or any foriegn matter. Have good fuel pressure athe the fuel bowl dain petcock. I have also traced all grounds out with meter and they appear fine.

The truck is now throwing codes. I just pulled them and the result is as follows. I get no 12 Code. I get 18-Pump Cam Reference Pulse Error and 35-Injection Pulse width Error (Time Short).

I am confused about not getting the 12 code to show diagnostics aren't working. Should I look at the PCM first?

Any help would be greatly appreciated

Thanks,
Dan

Code 12 means all is good, code 12 won't show with other codes present until they're recified or cleared.

Thanks CR, The other two pointing to the IP?

The pro's will have to pipe in on the codes, i'm still a greenhorn on the electronics of these things.

I'd be willing to bet your drawing air in the fuel somewhere. Thats about the only thing that can trip both codes. Bubbles confuse the optic sensor, and create a cavity in the Fuel Solenoid dropping CTimes.