For the last few weeks I've been trying to fix this stalling problem.
I've owned this 88 LX carbed 5-speed with 145K miles since it was new,
and I want to keep it forever.

The car starts and runs as normal, except lately it intermittently
stalls out at idle. Not the best situation in stop and go traffic! It
always restarts, and will run if the idle is held over 1000 RPM. If I
let it idle, it will eventually stall out.

I looked for the obvious vacuum leak problems and replaced one of the
vacuum valves that was bad. (Frequency Solenoid Valve B)
I have lately replaced the PCV valve, and just checked it again.
I just cleaned and checked the EGR valve and reinstalled it with a new
gasket
I have recently replaced both fuel filters and today replaced the fuel
pump. The gas tank was clean inside.
I just adjusted the fuel level in the float bowl, after pulling the carb
top and checking that the bowl looked clean.

What else could the problem be???

dan