Adjust TPS on 1990 Jeep Comanche

I have a 1989 Jeep Comanche-I need to know how to calibrate/adjust TPS.4.0 liter motor.
I didn't have a selection for 1989 so I put 1990 above.

Asked by for the 1990 Jeep Comanche
you need a dvom meter to set the voltage at 0 throttle to ,5 volts.
what issue are you having that you needed to replace the tps??

Thanks so much-I'll give it another try.