I bleed (bruped) according to the service manual topped off w/ AF and ran it. The fan never came on as it said it would. The fans work since w/ AC the spin. Also once the normal temp range was reached (just under mid way on gauge), I head a humming sound. like the sound of fluid being pumped throught the engine. I assume that was the thermo opending up and the AF circulating. SO next im jumping the switch