How to adjust tps on 97 d21

[cleidus88]

Went t parts house bought one ask if their was any adjustment for it he said no. I installed it and it not right I've tried adjusting it by ear it not working help please

[KILLERME]

ok, if a petrol. it is easier than diesel. Get ya multi meter, set it to 20volt scale. jam positive lead,in back of plug, its called back probing, in one of the three wire plug on TPS With engine off key on when engine hot. you will want a voltage of .35 -.45volts , and at full throttle 4-5volt . nip up lock screws and ya done. If high idle after all this setting the TPS , you will have to reset on off contacts, by turning key on and off 5 times or more. counting 5sec key on and 10sec key off.

[KILLERME]

negitive lead goes to engine ground

[Q451990]

Check out the FSM (factory service manual) at http://www.nicoclub.com/FSM/

The procedure should be there to check it's resistance with a simple ohm meter. If it's anything like the Q45 with a wax fast idle cam, you should be sure that the engine is at full operating temperature before adjusting it.

May I ask what issue you're chasing to try a new TPS?

Heath