i recently bought a 1990 grand marquis with 98000 miles. the car sat for past 6-9 months other than being started every once in awhile to keep battery charged because previous owner was ill. every thing seems ok other than that overdrive shudder i see others have talked about on the site and slight hesitation sometimes in overdrive. but there is a high pitch hum coming from the rear of the car it goes away sometimes but is almost always there. any thoughts on what this might be
does this mean it is going bad? ive had a few go bad on me but never had a hum before. is this just the noise they make. I just had to change one a couple weeks ago in the escort i'm hoping i dont have to change another one. its starting to get cold out here and the garage doors need to stay open on this job so if it is i need to change it pretty soon
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