Engine stall when warm- low RPM

[cjkjday]

I'm struggling with this issue. Been scouring the repair manual & forum and think I've addressed most similar symptoms. I've recently bought a 1996 4x4 HB, KA25E w/5 spd. Been cleaning/tuning it up when it shut down/stalled one day at a stoplight. Ran at high (>2000) RPM....got it home. I had/have a P1320 & P0110 fault code. Replaced plugs, wires (NGK for both) and the distributor. Timing appears good @ 10 BTC... does jump around a couple +/- (normal?). Checked resistance on the 2.2k ohm resistor by the valve cover (good). New fuel & air filters and PCV. Cleaned the EGR, IAC, Throttle body...TPS appears to be working correctly. Sprayed brake cleaner around the vacuum lines...nothing.
Starts up and runs fine when cold... when it warms up, starts to sputter and stall. Will start up right away after... to stall again, but will run if I keep it above ~ 2000. Only other unordinary symptom was the clicking/chatter that was coming at ignition start and shutoff... seems to be coming from the vacuum tank area. Replaced the fuel pump relay...and still have the chatter. Didn't think it was related....did run with that issue. Any suggestions? Thermostat, temp sensors?...don't want to waste time/$$$

[Rev_D21]

A couple things come to mind. 1) the brake clean method of finding vacuum leaks doesn't really work. The best, and I sound like a broken record, and most reliable way to track vacuum leaks is to hook up a vacuum gauge and take readings off of that. They are cheap enough and handy for quite a lot of driveability problems. 2) the +/- of the timing could be due to a worn worm gear on the snout of the crankshaft. Since the distributor and oil pump are run by that gear...just a thought. 3) Stalling at idle could be the result of a stuck open EGR valve. That would basically flood the engine with air and cause it to stall. Even though you cleaned it there might still be an issue there. Once again just a thought.

[cjkjday]

So I gave up and took it to the shop... took them 5 hrs to diagnose, but a short on a distributor wire in the bundle running down the valve cover. Way in the back (of course)... runs good now. On to the next tasks....Thanks!