sn95: It's a POS AOD transmission that needs a rebuild. I can feel my Overdrive band trying to slip out when it engages every time. 3rd is getting rough too. Extra detail too, the transmission itself whines when downshifting from Overdrive to 3rd...downshifts pretty damn hard too. First I thought it was my rear end so I popped the car into neutral real quick and the noise stopped. 
The rear end has some wear/damage in it because the differential cover was leaking when I got it and when I had it serviced for the first time, they never put a new cover on (@ssholes), so it leaked the fluid out again. It has a new cover and fluid filled to the top with friction modifier added now, but it's whining a little bit.
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'91 Mustang GT 5.0 AOD Daily Driver
Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI
13.73 at 103.8, ~2.2 60'
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