rear end makes a whinning noise when you drive it but just when you let off the gas on 1992 Ford Aerostar

92 ford aerostar 4.o makes a whinning noise when driving it, but just when you let off the gas. Also makes a big klunk when you put it in reverse

by in Columbus, OH on October 27, 2010
1 answer
ANSWER by on October 27, 2010
pinion bearings worn out. need a re build on the differental. costs about 900 parts and labor Roy