1988 190 E 2.6L w/ 5-Speed. Well, Fritz is on the fritz. When the car is first started, all the heating controls work. After five minutes, it shuts down. If the heat is on and the blower on, say, the third level, it runs until it just stops - no blower. Start it up again after a five minute break, and all is well - for another five minutes. The blower does squeel a little bit (now and again), I know I have to lpull it and ube it or replace it, but if there was a problem with that, won't it just lock up/freeze up on the bearings and never work again? A new blower module was put in the dash within the last year. When it works, it works. Then it stops. Any ideas?