Throttle Position Sensor testing

[ltkaknm]

I was testing my TPS sensor and the Chilton manual said at Wide Open Throttle the reading hould be 4.6-4.7. Mine was a 4.87 and when I went back to standard throttle position it was 4.86. I would think it should have more of a range than that?

Any suggestions?

THanks,

LTK

[langer1]

Yes it should, your engine would not run if those reading are correct.
My guess your meter is not connected correctly.

[Pioneer84]

X2 check your meter connections.

[langer1]

Black(-) lead on B red(+) probe on C reading should go smoothly from .87 to 4.87

[5-90]

What year? I have quite a few FSMs, and can probably look up the test procedure for you.

However, it sounds like you're checking "source voltage" - the reference voltage signal that is divided by the TPS to get the throttle opening reading for the ECU/PCM.

There were a couple changes over the years, so I'd like to be sure before I give you any advice...

5-90