1989 Peterbilt automatic shutdown system

Engine shutdown? That's in the ecm, and you would have about 33% chance that you would have a Series 60 in it. The other engines had mechanical pumps in 1989, so there is no shutdown.

Unless you mean something else.

 

If it was a fleet tractor at one time it may have a Kyzor system on it. I had a ‘78 K100 with a Cummins came off the John Deere fleet had one on it.

 

So it just uses the module to break fuel solenoid signal?

Looks pretty straightforward. Neat stuff, never seen that before

 

That’s how the one on my BC1 Cummins worked. Would use signal from oil pressure and water temp senders to shut the fuel off. If I had the screw run in on the back of the pump it was about 50/50 whether the shut-down solenoid went bad or the Kysor controller was fubar’d. And it had old school phone bells on everything instead of buzzers. That truck could be a little rough on a hangover.

 

Never seen one of those still connected after the warranty expired. Like @kranky1 stated. On trucks with Cummins They would always glitch and shutdown fuel for stupid reasons. Everyone cut the wires on those after a few years. I have the original one in the dash of my ‘72 White. As far as I can tell it hasn’t been hooked up for 40 years or more. Lol!

 

When I was a small boy there was still one of my grandfathers WB22 Whites and a Diamond T at the back of the yard I used to play in that had Murphy Gauges on the oil pressure and water temp. They were the first shut down system. Water too high or oil low they cut the ignition off.