Ok,so I done this,here's how:

- Get several feet of wire. At least 6ft to make life easy. Cut them into 6 1' pieces and strip the ends. Now twist 2 pieces of wire together. So now you have 3 2' wires with the ends stripped and a stripped spot in the middle.
- There are 3 wires/pins for the tps sensor. 2 outside wires are ground and 5v source. Middle wire is the return voltage on the tps.
- Remove the throttle body, and connect your new spliced wires to the pins on the tps sensor on the throttle body and the pins on the wiring harness.
- Now connect your multimeter to the 2 outside wires (easiest to do this at the stripped points in the middle of the wires). This will also show you which wire is ground and wich is 5v.
- Turn the ignition to on (but do not start the car).
- Verify that you have 5v going to the tps.
- Now connect the multimeter to ground and the middle wire to measure tps voltage.
- TPS sensor is held in place by 2 screws. Open the throttle rotor to WOT and keep rotating the sensor until you get the output shown on the multimeter to 4.5v.
- Tighten tps sensor down & adjust idle setting screw shown in the pic below. Adjust this until the idle reading on the tps is about 0.48-0.49v.
- Now double check that WOT & idle tps readings are correct and put it all back together.

http://www.superhonda.com/forum/f49/tps-voltage-239633/

http://hondaswap.com/~pills/obd1guide.html

I got the 5V reading.
I couldn't get a 4.5V reading though.When I turned the TPS sensor as far as it will go it only read 3.25V.

The car goes much better now! but the idle is high at 1500rpm when in park (auto) also the engine check light is on (I reset the ECU but still on).I will need to do a code check.

I left the idle screw screwed right in how it was.If I turned it out it idle's far too high.
Why can't I get a higher reading,to 4.5V on the sensor at WOT?

I just thought,for WOT I got a mate to hold the throttle open in the engine bay instead of putting a foot on the pedal.The throttle was open more than if you had put your foot on the pedal,maybe that affected the reading?