85 cadillac seville heater problem
 

my blower motor works when it wants to - it will be blowing and then it cuts out

then comes back on then goes out and sometimes wont at all

this happen for both heat and cooling but cooling seems to act up more

any thoughts

lose connector?

i be suspect of that specially if you notice that the acting up takes place when your car hits a bump in the road.




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blower motor
 

Hi,i had the same thing.The blower motor speed is controlled by the ground of the motor,so check this first.I installed a 12 v regulator and a knob on the dashboard so now i control the blower speed manually.
greetings from Belgium,luc.