Jerking and TPS sensor Options

[UVZ164]

Hey guys,

For the last few months my car has been jerking ALOT when going on or off the throttle. Its a 97 ZR(GT) 5sfe manual. Its not the normal manual tranny shake when you let off, its very violent and all my passengers comment which kills me a little bit every time. So far i've replaced the:
* spark plugs
* dizzy
* cleaned the TB and IACV valve
* new air filter
* cleaned all moving mechanisms with the throttle cable and pedal assembly to ensure no sticking

However the jerking lives on

The only other things i could think of are the spark plug wires and the TPS sensor.
I borrowed an ohmetre and did some testing of the TPS. In the fully closed position the reading is 0.4 and the allowable range is (0.2 - 5.7). When fully open the reading is 2.6 and the range is (2 - 10.2). Theres another test that is two diff pins that reads 3.4 and the range is(2.5 - 5.9). Do the first two seem a little low? Yes they are in the allowable range but almost every other electrical connection i have tried has been smack bang in the middle of the range.
I also did a continuity test of the TPS sensor. When the distance between the throttle stop screw(most commonly knows as the idle adjust screw) and the plate is 0.5mm there should be continuity and when 0.7mm or greater there should be no continuity. Now when i have it at 0.5mm (using a feeler gauge) the ohmetre reads OL and the same thing when at 0.7mm. Does this null continuity result mean the TPS sensor is bad? And could that possibly be whats causing the jerking? If not what do you think could be causing it?

Quick one at the end, what should the idle be on a 5sfe manual? The BGB says that all 5sfe no matter what year or tranny ahould be at 700, however the BGB i have is for a 98 OBDII car and mine is a OBDI. I have also read that the manual idle should be up around 800-850. Mine is currently at 700 but there is alot of vibration and i have only recently replaced the front and rear with non-polyurethane engine mounts. Should i raise it up to 800 using the screw or leave it at the 700?

Thanks alot guys!

Reece

[UVZ164]

Checked the mount, the rubber almost looks brand new so doubt its that. When checking the CV shafts i did it in neutral then in gear.
When in neutral the side i was spinning turned instantly all the way back to the tranny this was the same for both sides.
When in first the same thing occured with the CV's. However i thought that the other wheel should begin to spin immediately too. Through crude measurements i found that i had to move 1 wheel about 6-9 degrees before the other wheel would begin to spin. Is this normal?

I checked for codes about a week ago and came up with nothing and today i checked and unfortunately came up with code 31(OBDI) which from this website:
http://www.troublecodes.net/Toyota/
states that its my MAP sensor. As mentioned earlier i checked my MAP sensor a few days ago and all pins read correct voltages and the same again today. I can't test the vacuum response as i dont have a vacuum pump. I'm fearing that it could be on the ECU side of things which would REALLY suck.