Well, since there are so many update threads in here, I figured I'd add my own!
I've had my 89 LX-i for just barely two weeks, but there's a reason it was a $150 car. Lots of stuff needs fixing and upgrading! Much more to come.
Here's the list of the repairs/upgrades I've done so far:
New engine oil (of course)
New battery (old one was dead when I picked up the car)
New wiper blades
New spark plugs
New TW sensor
Re-soldered EFI main relay (now the car starts when it's warm outside!)
New speakers (just wal-mart cheapies for now - nothing stellar but they'll keep me happy until I've finished the mechanical repairs and saved up some more cash)
So I found this interesting gem of a repair job while poking around under the hood. New parts on the way...