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Q:My fan was only working on HIGH but now does not blow at all, could this part be one of the problms ?
A:With reference to your inquiry on the BWD HVAC Blower Motor Resistor - Part No. RU815, if a blower motor resister is bad the fan won't work at all or will only work on certain speeds. We would recommended you to replace the resister if it failure. However, without the presence of your vehicle we would not be able to properly diagnose it nor provide you with a 100% answer. We would suggest that you take your vehicle to a certified mechanic for further diagnosis. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.
Q:Is this part for 1973 Chevy Impala with AC. The part number on original looks identical but has the number #3998401 on it.
A:No, this BWD Blower Motor Resistor - Part No. RU815 does not fit your 1973 Chevrolet Impala.
Q:motor blowing but no air coming out the vents all hoses are attached and no blockages in system i opened up vent unit and checked
A:With out the presence of your vehicle we would not be able to properly diagnose it nor provide you with a 100% answer. We would suggest taking your vehicle to a certified mechanic for a proper diagnosis before buying and having parts installed that may not solve or be the problem.
Q:will this part stop the blower from working
Q:Where is this part located on the car?
A:I believe you access it from the passenger firewall near the point where the heater hoses pass through. If you run the blower you can hear it behing the cover. How do you know if it needs replacemnt is my question?