Recent content by BJW

I have changed the yellow diode under the dash. Still have the same problem. Found out if I disconnect the wire from the engine oil pressure sending unit, chatter problem goes away and everything works as it should. Any ideas why this would be happening?

M9000 with cab, mechanical shuttle. When preheating before starting, the injection pump solenoid vibrates generating a lot of noise. Turn key to start, and starter engages and engine starts ok and stays running. What can be causing the shut off solenoid to vibrate when preheating?