[Army 352P CWO]

Ok, the fuel pump is running. I disconnected the plug on the back of the mixture control unit and heard it with the key 'On'. I even jacked up the car, crawled under, and took off the belly pan/guard to feel it vibrating. Now I know what it sounds like. Granted, though, I haven't confirmed it's pressure yet.

I've got 12 volts at fuse #16. And, I've got 12 volts at relay ports 86 and 87A, which I guess is consistent with the fuel pump operating as advertised.

Now I believe at least part of the issue is an intermittent connection between the fuel pump relay and it's port connections. With the key 'On' and the sensor plate propped up and me not hearing any fuel injector 'squeal' I can touch the relay and suddenly get the squeal. Also, if there's no squeal with the touch, I can start to pull out the relay and suddenly get the squeal. I removed the relay and opened up the cross-cut hatches on the prongs of the relay with a knife blade to make the prongs larger in diameter and that appears to have made the connection much better. However, I'm going to buy a new relay just to make sure there's not something internal going on as well.

Seems like L.J. was right about the intermittent squeal just being coincidental with me manipulating the pressure plate. Jeez, that was confusing me.

So, I guess I'm to the point of needing to buy some fuel pressure gauges to figure out the rough idle. The thing that kills me, though, is that the rough idle didn't start until after removing the FD and the mixture control unit, so I think it must be that I've created a vacuum leak somewhere by moving parts around. I've double checked all the fuel connections that I disconnected to make sure they're back on appropriately.

thanks for everyone's suggestions!