TPS votage?

[02whiteXLT]

what is the suggested voltage for these cars, on my mustangs they really like .98 volts is it the same fo the 4.0 sohc v6's

 

[E.B. Cornburner]

They're non-adjustable and self-calibrating, so one vehicle's TPS voltage at 0% throttle may be different than another's. Rule of thumb though is anything less than 1 volt at 0% throttle is acceptable, and somewhere around 4 volts at 100% throttle opening is normal.

 

[CDW6212R]

Ditto, because the OBDII and newer TPS sensors do not need any adjustment. Before the OBDII, the PCM had a set idle setting, that .980V is where that comes from. Those PCM's assumed that .980V was idle, and anything away from that affected all performance.

Now all PCM's establish idle TPS voltage at exactly what it is each time the engine is started. So if it is in a decent range like 0.5-1.5V as example, the PCM makes easy math to compare that to all running TPS changes.

All that matters now is that the range is in the ball park of 0-5.0 volts, and that it is a linear change. All TPS sensors work the same by Ford, and the PCM's do the basic math. Regards,

 

[02whiteXLT]

ohh ok, so basicly every time you start the car it will zero out the tps, for the obd1 they really do like it at .98, when i first got the car new i was curious of what it was set at and it was .95volts so i set it at .98volts and the holes didnt need to be drilled out didnt notice any difference or mpg change now i know why, on my obd1 cars i could decrease the voltage and get a lil better mileage

 

[E.B. Cornburner]

I don't think they zero out every time...They set the parameters in their adaptive memory. If you disconnect the battery for any length of time, then the PCM will have to figure out its calibration once again. Because of this and other learned adaptives, the vehicle may tend to feel a bit strange till all the adaptives are re-learned.