ok i just had a new Torque converter installed in my 1997 ranger, now it rattles when it is in park sometimes, and a vibration comes from under the truck when i barely take off from about 0-5 mph then it goes away. any idea what it could be? i had a certified mechanic do it.

i might be dumb for asking this, but what is a TQ?

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2007 FORD RANGER XLT EXTENDED CAB - 4.0, 4x4, 5sp
Ultragauge, 10" L7 W/ 2200W PA Amp, CB W/4' Fiberglass whip, PA system, LEER shell w/led 3rd brake and custom remover, LED taillights in mudflaps, 5K 55W HIDs, Aux reverse lights, DIY bed liner, Hellas, Bed mat (cut up livestock mat).

lol no your not the dumb one i am, i meant TC, torque converter, sorry lol

i dont know much about transmissions, but i would guess maybe a bolt is loose?
hows the fluid lvl?
i would take it back to the mechanic.

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2007 FORD RANGER XLT EXTENDED CAB - 4.0, 4x4, 5sp
Ultragauge, 10" L7 W/ 2200W PA Amp, CB W/4' Fiberglass whip, PA system, LEER shell w/led 3rd brake and custom remover, LED taillights in mudflaps, 5K 55W HIDs, Aux reverse lights, DIY bed liner, Hellas, Bed mat (cut up livestock mat).

Not positive but it may not be perfectly centered with the crankshaft. I know that when I install a trans, there is a little bit of play in the holes in the flex plates, and if it's not centered perfect it will cause some issues. Also there are a bunch of checks, and measurements that are supposed to be done to the flywheel housing on the engine prior to installation. Most techs don't do these checks unless there is something obviously wrong, myself included. You could have gotten a bad tc. There might be a loose mount bolt or bad u-joint, or the drive line might have gotten messed up. More importantly, why did you replace the tc in the first place? I would take it back and demand it be repaired at no cost.

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2003 Ranger FX4 level II. 3" BL, 33x12.50 GT Radial Mud Claws, Custom front and rear bumpers with winch hookups, custom flatbed, with hi-lift, and full size spare mount, 12,000 lb winch mounted under bed, Electric fan, and of course a flowmaster.