Thanks SHOwn, did replace fuel pump , 2nd one in 2 1/2 years , pressure tested with little pressure and replaced pressure regulator, filter too...nada ! Did re check timing , new timing belt , water pump, idler pulley etc couple years ago..all good there. Did all the vacuum hoses - good.
Am leaning toward checking - testing cat converter, would like to get Co2 sensor out to test cat without pulling it out. Don't see cat being issue because of consistency of stall at rpm , 3700, but I guess it's a process of elimination !
Don't recall name of external part on distributor , sensor of some type If that is related ( NA motor ) would like down test procedure on that..more investigating
. Any more ideas would be appreciated . BTW, it only has around 52,000 miles on it, pretty good shape, barely any rust on body too . Thanks again !