• Welcome to The Truck Stop! We see you haven't REGISTERED yet.

    Your truck knowledge is missing!
    • Registration is FREE , all we need is your birthday and email. (We don't share ANY data with ANYONE)
    • We have tons of knowledge here for your diesel truck!
    • Post your own topics and reply to existing threads to help others out!
    • NO ADS! The site is fully functional and ad free!
    CLICK HERE TO REGISTER!

    Problems registering? Click here to contact us!

    Already registered, but need a PASSWORD RESET? CLICK HERE TO RESET YOUR PASSWORD!

6.5 dead in water, please help

Have you checked to see if the fuel shut off solenoid is working?Often just holding it while a helper cycles the key to run should give you the feel and sound of a "click".

The FSO and PMD/IP fuel solenoid are both powered by the same fuse also so check your fuses(on OBDII it is called fuel sol fuse-not sure about OBD1).
 
Just to pile on my 2 cents.
My truck did something very similar, (loss of power/died under load, white smoke and could barely get it to rough idle if I punched throttle, wasn't throwing any codes).
I swapped to known good PMD, redid the fuel filter and fuel lines with clear lines to check for air in fuel, (which it acted like), and cleaned all the grounds/fuses, nothing fixed it.

Check your Optical Sensor.
It is on top of your IP by the fuel shut off solenoid. There is a plug coming out of it facing towards the rear of the truck, black plastic little box/turret right on top of the IP.
Just unplug it, and it should fail over and use the crank position sensor as back up. Mine threw a load of codes but started right up and ran fine. I replaced the sensor and it fixed it.
Here is a walkthrough for replacing it, but I would just unplug it first to test, easy and quick. If it starts up you know it's your problem, if not it's back to the drawing board.
 
You must log in or register to reply here.
Back
Top