Blower motor not working properly

1996 LINCOLN TOWN CAR
2,750,000 MILES • 4.6L • V8 • 2WD • AUTOMATIC
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BEACCHBUMB
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Does not work when you step on the brakes it will work. Then as you are accelerating you lose the A/C or heat and blower only blows on high.
May 25, 2021 at 5:20 AM
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STRAILER
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This sounds like the blower motor is bad. To be sure let's use this guide to check the power and grounds. Here is a guide to help you step by step with instructions in the diagrams below to show you how on your car:

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

For the blower speed problem the resistor sounds like it needs to be replaced as well.

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
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May 26, 2021 at 10:20 AM