Hey...1993 525 iT Wagon.......very little heat is comming out of all of the vents all of a sudden, and while I am driving, the engine temp gage on my dash does not get off of the blue section (verry cool).
My guess is theremostat.......any one else?
Bman

you guessed correct, your prize.......replace the thermostat, they actually break and never close again. I recommend you replace the plastic housing with a metal one while your at it. Have Fun!