Hey, im new. I have the same problem with a very low idle when coming to a stop. Once i get stopped though, the idle bounces back up to where it should be. When it starts to die it somehow idles pretty much down on the tach peg.
Ive taken off the egr valve, cleaned that filter off, still didnt do anything.
Took off isc valve, blew it out, put a new gasket on it, still does it.
Some time this week im gonna put in a new pcv, it looks kinda loose in the valve cover.
Supposedly someone had the same problem near me and took it to a couple dealerships and none of them could figure out what the problem was.
BTW, i drive a 93 sidekick 4dr.