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Your Auto Inspector
Your Auto Inspector, Assistant Service Manager
Category: Car
Satisfied Customers: 874
Experience:  Tires Plus
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The AC does not blow as hard as it did when new

Customer Question

I have a 2002 XG350L. The AC does not blow as hard as it did when new. The fan seems to be operating OK.
Submitted: 6 years ago.
Category: Car
Expert:  Your Auto Inspector replied 6 years ago.

Thanks for using Just Answer. I will be glad to assist you.


If the fan is operational, you more than likely have an issue with the blower motor resistor. The power going to the fan is always the same, so the system uses a resistor to lower the voltage and therefore control the fan speed. Each setting has a specific resistance that allows the fan to spin at a certain speed, with no resistance at the high speed.


You can try to apply direct power to the fan and see if the air volume changes. If it does then you more than likely have a bad blower motor resistor. If not then replace the blower motor or look into the dashboard for restrictions.


I have included the inspection procedure for the blower motor resistor:





If the blower motor resistor does not match the resistance values then replace the blower motor resistor.

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Customer: replied 6 years ago.
Where is the resister located and what do I do to access it?
Expert:  Your Auto Inspector replied 6 years ago.

Please refer to the picture I included above.


The blower motor resistor is located on the box where the blower motor is located.