What's that?

[Tony J.]

Okay, I'm reading these threads, and seeing several acronyms, etc. that I don't understand.
FSD?
PMD?
lift pump and injector pump- different? If they are different, what's a lift pump do?

My truck just had a problem prior to me picking it up. Some relay on the top of the engine was failing- I believe it controls the injector pump? It was relocated to the firewall (and replaced with a new one) and seems to be fine now. Was this the PMD (is that Pump Mounted Driver)??

Thanks- just trying to learn the lingo, and when I searched for these, I found them mentioned ALL OVER the place, but no definitions.

[Tony J.]

Okay, I just looked at HowieE's webpage and FSD pics- that's the unit I was talking about, but I still haven't heard what FSD stands for...

[gmctd]

Fuel Solenoid Driver becomes the Pump Mounted Driver when you install it on the pump.

Lift pump is the fuel pump from the tank - mounted on the frame rail under the driver's seat. Supplys fuel to the injection pump.