htr blower motor question

[JordanVw@aol.com]

my '84 5000T  heater blower motor is on the fritz...when i push the button in
the climate control cluster i can hear a clicking of a relay, but sometimes
the blower wont come on  till after a few seconds, or after i go over a
bump..sometimes it does come on, tho, right when i push the button...  it
seems like the blower motor is going, but it hasnt gone yet..is there a way to
lubricate it? or otherwise try to save it before it craps out alltogether?  i
have a spare blower motor/htr core assembly from a '87 5000 but i dont have a
heated garage (its 15 degrees here in allentown pa) and as you know, that is a
major swap...just trying to see if i can make it last at least till spring!! 
pls respond directly, as im not on the Q list yet

chris
allentown, pa
'86 5k TQ
'84 5k T
'84 VW Vanagon (wasserleaker)
'78 VW Westfalia