No start...has me stumped

[DEEZUZ]

Yea I'm not super worried about that voltage. But if there is a bad wire, than it's definitely not liking that low if voltage

 

[lincolnlocker]

My truck gets down to 10.9-11.1 volts in the dead of winter with the glow plugs on and the truck cranks and starts no problem.

Billy T.
[email protected]

Pcm requires 10.5v to fire the injectors. Either get another truck on it with jumper cables or a battery charger with it set on jump start. How old are the batteries in the truck?

Yea I'm not super worried about that voltage. But if there is a bad wire, than it's definitely not liking that low if voltage

I definitely would be worried.

live life full throttle

 

[gnxtc2]

Fixed :rockon: :rockon: :rockon:

The lower 5 pins on the PCM were corroded. Cleaned up the pins/sockets, got a PW reading and the motor started.

Billy T.
[email protected]

 

[mandkole]

that's awesome man... nice work. That young man owes you a beer or three.:rockon:

 

[lincolnlocker]

Fixed :rockon: :rockon: :rockon:

The lower 5 pins on the PCM were corroded. Cleaned up the pins/sockets, got a PW reading and the motor started.

Billy T.
[email protected]

Thats good. Are they clean enough to just make it work or did you get it thoroughly so it can stay that way without replacement.

live life full throttle

 

[gnxtc2]

I'm going back today to de-pin the PCM connector and thoroughly clean everything. I did clean the PCM.

Billy T.
[email protected]

 

[lincolnlocker]

I'm going back today to de-pin the PCM connector and thoroughly clean everything. I did clean the PCM.

Billy T.
[email protected]

Nice! Good job man! Knew it was electrical. Bad connection or low voltage or both. Good find.

live life full throttle

 

[mandkole]

This was good. As we move forward with maintaining these old trucks, the real battle will become the electrical troubleshooting. We need a home for all of these types of threads/posts in the library-- especially those with good outcomes.