I don't think you will be able to adjust that TPS to get the voltage range you want.

The known good TPS's have a resistance range (on the thottle body) of 4.53 and 4.67 kohms.

Yours has a range of 5.29 kohms and is not even in the same ball park.

Truthfully, I don't know why you are messing with it. Replace it.

Dave

Hi Dave. The point is that the resistance range in itself does not matter. I will try to explain;
The TPS has two resistances. One is a protection resistance sitting on the C terminal. In your "take out" that would be 1.38 kohms. The other is a resistance that goes between terminals A and B. On your "Take out" that would be appr 7.24-1.38 = 5.86 kohms. Terminal C taps into that resistance in relation to the angle of the input shaft of the TPS. So at one of the end points you would at terminal C see 0 ohms + the protection resistance 1.38 kohms = 1.38 kohms. At the other end point you would at terminal C see 5.86 kohms + the protective 1.38 = 7.24 kohms. So for a given angle a certain portion of the component´s total resistance A to B will be between C to A and a certain portion between C to B. It is the relation that defines the output Voltage. It can be 10 kohm total resistance A to B and you would still get a Voltage range of in your case appr 0.73 and 4.49 V . What does matter is the angle at which the TPS is mounted. The holes on the TPS are quite big so if you twist it a little you would perhaps get 0.53 to 4.29 which is perhaps not good. Or alternatively you would get 0.93 to 4.69 which definitely is not good. If the ECM can not identify idle it will for sure do funny things.

Dave, made a little drawing of your "Take Out" TPS. Hope it clarifies how it works.

Ooops, new attempt

Dave&Mats- great thread. thanks for the good info. Since Mat's TPS was only reading 73% at WOT, I can understand why you are concerned with the actual voltages and resistance to try and narrow down the cause of the low reading. I understand that some ECM's make note of the high and low voltage values at idle and WOT and then interpolate the % possition based on the relative voltage between the 2 values...ie, as long as you have a smooth transition from low to high, it really doesn't matter what the actual voltage readings are...it's the % possition that is important.
Is that true with MEFI 1 ECM's? If my scan says 0% at idle and 100% at WOT with a smooth transition but my high/low voltage is something different than .7/4.5, should I be concerned?
thanks-

If you with scan tool can see the whole swing 0-100%, then everything is fine. I am not even sure that the high percentage values are so important to MEFI 1 ECM. It may or may not be used for making a small correction to the air/fuel mixture. As I understand it the low values (close to 0%) are used to identify that you want the engine to idle which is kind of important. I have also read that some ECMs identifies the low and high voltage and adjusts the swing 0-100%. Since my ECM (MEFI-1) only went up to 73% we can conclude that the MEFI-1 ECM does not make that kind of adjustment, at least not in upper end. Maybe it does put the 0% at the low voltage since that point is crucial to make the idle work.