Re: new tcc solenoid made trans worse!
It depends on how much metal. Its to be expected in a car with over 200k miles on it. That plug you found in the pan is from the factory that plugged the dipstick tube. What that means is that the transmission has never been serviced.
It sounds to me like the tcc solenoid is sticking on. Have you verified fluid level with it running? Have you checked the mlps for proper alignment?
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07 Gt Tungsten Grey
Roush (Airaid) Cai, GT500 Tb with BlowByRacing Adaptor Plate, UPR O/r X Pipe, M80's, Pypes Muffler Delete Axle Back, Sr Performance Adjustable Motor Mounts and Steeda Tri Ax Short Throw Shifter
02 Gt Mineral Grey
Steeda Sport Springs, 3.73s, Pro5.0 Short Shifter, Pypes O/r X Pipe, full 2.5 inch exhaust with M80's, 75mm Tb and C&L Plenum
87 Mercury Grand Marquis