Need help diagnosing adnormal sound.

J

jerrod1932

Senior Member
Trying to help a friend out. he has a 1930 model a pickup truck. It makes kind of a howling grinding sound when you decelerate, especially when your in 3rd gear and are going 25 to 35 mph. doesnt seem to be coming directly fromthe transmission , or the engine, but we cant seem to pinpoint where its coming from, or what the problem is. Can anybody shed some light on possibilities?

thanks in advance, david
 
If it's not the speedo cable as Mitch said, then I'd check the ring and pinion. The pinion may have a loose bearing and shift enough during coasting to make the noise.
 
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