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I just finished 5 days of replacing the heater core, new seals, new expansion tank etc. etc. at http://forums.corvetteforum.com/show....php?t=1174120 and everything worked fine pumping good amount of hot air out the vents but this morning I showed my wife all my hard efforts and I just turned the key to ACC and turned the fan switch on and it sounds like the fan motor bearings are going bad. I never turned the fan on with the car off so the exhaust noise masked the blower motor's noise. Also the clock starts moving for 10 seconds then stops but puts a load on the battery. Well I'm not sure if I'm going to do anything about the clock save pulling the fuse. The blower motor requires pulling the expansion tank, hoses, outer heater box as the fan blade (a squirrel cage) is bolted to the blower motor drive shaft and the blades are larger then the hole the motor fits in. Well at least I don't have to remove the interior to replace the blower motor. I think I'll do nothing for now. I'll use the blower motor till it burns out, maybe get a few months out of it. Then order a new motor and quartz clock. I just don't want to go thru all that cra$ all over again. At least for now.
Can't tell you how many times I've had to do something twice/thrice just to get it right.
I've learned to replace "difficult-to-reach" stuff with new while I have an assembly apart.
Famous last words: "It looks OK...I'd re-use it"...
You know when the heater/ blower assemblies were apart I thought hey lets hook up two wires directly to the Nissan's battery (car sitting next to the Vette) but I was scared that without the resistor I'd blow the motor and i have no idea what the resister does.
Desertdawg you can have my 68. I'll pay for your flight out. Just bring 25K and another $400 to cover gas getting back home.