This is going to sound strange, but my AC fan (the fan that blows the cool air into the car) goes faster, and slower, as the engine goes faster, or slower. If I increase the RPMs, the fan starts to blow real hard. If I decrease the RPMs, the fan slows down. Also, sometimes the fan stops (while I am driving at 60 MPH on the freeway). 20 seconds later, it comes back on. The AC does blow cold - very cold. Any ideas?

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Jacob Wissler Jr., Houston, Texas, 1984 300 SD

Could this be an alternator problem?

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Jacob Wissler Jr., Houston, Texas, 1984 300 SD