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So it works! Swapped the old tranny back in. Turns out the ECU capacitors were the entire problem! Thank you all for your help and i hope this helps anyone else that has capacitors issues!

😬 https://shop.advanceautoparts.com/p/oes-genuine-p-s-pump-pulley-m2060256779oes/11923280-P?utm_medium=ymme&vehicleIdSearch=23716&isAllVehicle=false They say it doesn't fit '93 MY. Probably not available etiher. Question: How the heck did the pulley get bent? In correct removal proceedure? At this point, I'd just buy the entire used pump with the pulley (time sensitive link), remove the pulley and pitch the pump.: https://www.ebay.com/itm/90-93-LEXUS-LS400-4-0L-V8-RWD-POWER-STEERING-PUMP-PULLEY-WITH-RESERVOIR-OEM/233899588381?fits=Model%3ALS400|Make%3ALexus&hash=item3675807b1d:g:e~cAAOSwlYtgLS8a

MY 93 Ls with 101,000 miles started to lose power on acceleration under a load. Such as A/C on or going up even a small incline. Or would drop the RPM if I tried to accelerate to fast. The engine dosen't miss fire or make any noise except a puffing sound when this happens. Sort of like a sneeze. If I am under 2000rpm, the engine will drop and increase the rpm repeatedly untill I let off the gas pedel. If I am over 2200rpm the engine rpm will drop to around 1200-1500rpm and stay there untill I let off the gas pedal. In park or neutral, the engine rpm will go up to 6k plus. Smooth and easy. Also while driving the engine does fine if I only accelerate slowly. If I push the gas down as if to pass someone. The rpm drops far enough as to slow the car as if I'm braking. The problem slightly improved with two new coils. And denso Ird. plugs. I also replaced the under car fuel filter. I had replaced the wires, caps, rotors and plugs 8000 miles ago. I changed the plugs again because I used Bosch Platinum then. And have read about fouling prob's with them after 6K. The electrodes looked ok, but there was browinsh staining around the outside area above the tighting ring. Looked as if there was a leak of combustion gas. The engine is much more responsive and smooth. The problem is much less. But still there. After that long story. The code readout is code 41. The TPS and or ECM fault code, and or the tps wire harness. Before the Dealer call, I will replace the Tsp sensor. Anyone ever do this without removing the throttle body. If so, How did you connect your Ohm meter? Also, any info on checking or replacing the wire Harness? The protective cover on mine looks as to have been melted to expose the wires. And the coverings on two of the 4 wires look mangled and are stiff to the touch. I looked at lexls for the tps adj. by hand, with trial and error. But it dosen't make sense to me. The tps adj. seems to be for an opened/closed setting using an ohm meter. Regardless as to what the idle speed is. Lastly, Any thoughts on this problem other than the tps?