Changed brakes rotors and clibers Twice, they were run down to bare steel on 50 Mi. The car runs at 7000 RPM's on and off while driving under 30 MPH. what is is ?

its probably the kickdown cable look under the hood its the cable that runs next to the throttle cable see if there's alot of slack or if its too tight and not letting it release all the way.

check for problem drive line "U" joints or cv joints

A slight shimmy under braking is usually the result of a brake rotor that is not true. Sounds like you may have a warpped brake rotor...I would check that, and your front suspension componets for wear.... I hope this helps.

run the car in reverse for about 100 yards with your left foot on the brake,then run the car in forwards gear also with your foot on the brake,then run upto 30 mph and brake hard,you are trying to derust the rotors.

I think that the RPM issue sounds normal, there are overdrives and torque converter lock ups that change this reading...

On the brakes, get your rotors resurfaced. Their un parallelness and heat spots usually cause the roughness you describe. Carefully retorque the wheels, nuts in the correct order and in progressive tightness, so as to not bend the rotors at the end of this job...

The reset rate for vehicle computers vary by manufacturer, but 50-100 miles sounds good for the relearning process. As with the RPM's climbing unexpectedly, as a precaution I would look for a vacuum leak under your hood... it will be a hissing sound around some rubber hoses, as this can cause the RPM's to fluctuate and possibly give check engine light codes.

Look under your distributor cap. It should be clean have good metal contacts. Also look at the rotor button right under that. It should have a nice shiny metal contact. This spins under your distributor and fires your spark plugs. Wipe it with your finger or a rag and drive. If that was it...replace the cap and rotor.

What is does your RPM cauge showing ??? If the RPM rev's are high and your speed is slow, the clutch is slipping.

New revised calipers. and have the new rotors machined right out of the box before installing

The shaking would be from your front rotors. First, loosen the lugs and retighten them with a torque wrench (not an impact gun) to the proper setting as described by Toyota. If the lugs are tightened unevenly or too tightly, it will artifically warp your rotors. If this does not fix the issue, your rotors are most likely warped from overheating, or being sprayed with water while hot, or from age. Get new rotors (and pads - always use new pads with new rotors), install them, and torque your wheels properly, and you should be in good shape.