took in in for a sniff test---it's burning as it should.
Shop had a spare Mitsu Massair sensor. We put it on and no improvement.
He did check of T.B. by blocking holes in varius combinations...
I his opinion---it's the water heated Air vavle.
.
Now I'm thinking of making a mod. of a water valve off a jumk 89-94 . Drilling out and plugging holes. This will get me by till cold weather.
Anybody out there got a junk 89-94 3.0 TB there lookin to get shed of for my experiment????
It can be trashed,,I just need an uncracked bottom part.

dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.