Heater fan motor

[reeldl]

So this is the deal....

My 1996 Blazer Heater fan works only when it feels like it. I will start up the Blazer and sometime it will work and sometimes not. If the heater is blowing air when it starts, I will continue to get heat as long as the Blazer is on. If the heat is not working, then I have to drive very fast and aim for pot holes (quite a number in my area) then the jarring motion seems to make the heat work. Once I get the heat working by using this technique, it will continue to work until I shut off the Blazer. Then it is a guess if the heat will come back on. If I am lucky, it will else it will not.

Clarifiaction: When I write the heat is not working, a little bit of heat is dribbling out, but there is no fan pushing the air.

Thank you everyone!!!

[anthony464]

It sounds like the motor has a dead spot in the comuntator. A new motor is usualy around $50 and you will probably have to reuse the plastic fan off the current motor.

[BlazerLT]

Originally Posted by reeldl

So this is the deal....

My 1996 Blazer Heater fan works only when it feels like it. I will start up the Blazer and sometime it will work and sometimes not. If the heater is blowing air when it starts, I will continue to get heat as long as the Blazer is on. If the heat is not working, then I have to drive very fast and aim for pot holes (quite a number in my area) then the jarring motion seems to make the heat work. Once I get the heat working by using this technique, it will continue to work until I shut off the Blazer. Then it is a guess if the heat will come back on. If I am lucky, it will else it will not.

Clarifiaction: When I write the heat is not working, a little bit of heat is dribbling out, but there is no fan pushing the air.

Thank you everyone!!!

Replace the fan and for gods sake, STOP hitting the pot holes.

Front ends are VERY expensive to replace on your truck.