TPS voltage range question

[seethrough]

Does anyone know the voltage range of the Throttle Position Sensor on our trucks. I am looking for idle voltage and WOT voltage. Thanks.

 

[caveman]

It needs to be .68v or less. If it is higher , then you have to remove the TPS and twist the shaft . like the picture. reinstall TPS and check voltage . twist it the right way . disconnect battery so the ECM can relearn the corrected voltage. Don't twist to far !! or the TPS would be able to read throttle position and you will end up with a stumble. Mine still functioned correctly down to .47 volts

From another thread.

 

[seethrough]

Thanks caveman. Now I just need to verify that the WOT voltage is in the 5V range.

 

[VENOMOUS1 RACING]

Thanks caveman. Now I just need to verify that the WOT voltage is in the 5V range.

WOT on ours is usually not 5v. Usually 4.5-4.7
.68 is correct idle as said.

 

[VPRPWRD]

As Scott said, typically a 5V reference will never reach the full 5V. 4.5 - 4.7 is typical.

 

[seethrough]

Thanks guys. That is what I needed.

 

[ViperPete]

My idle fluctuates 2-300 rpm.

Like, up down up down up down.

Is that caused by this voltage stuff? How do I measure what the voltage is supposed to be?

 

[VENOMOUS1 RACING]

My idle fluctuates 2-300 rpm.

Like, up down up down up down.

Is that caused by this voltage stuff? How do I measure what the voltage is supposed to be?

Multimeter bud. Yes it could be TPS going out. You'll get voltage from middle wire on sensor boss.

 

[seethrough]

My idle fluctuates 2-300 rpm.

Like, up down up down up down.

Is that caused by this voltage stuff? How do I measure what the voltage is supposed to be?

or you could have a plugged or faulty Idle Air Control solenoid although I don't suspect this would cause a "hunting idle" like you described. I make it a habit to pull the IAC and clean it every once in awhile.

 

[Arska2]

Hi,

Here are some detailed info to read :

http://http://workshop-manuals.com/dodge/ram_srt-10_pickup/v10-505_8.3l/powertrain_management/sensors_and_switches_powertrain_management/sensors_and_switches_computers_and_control_systems/throttle_position_sensor/component_information/locations/page_2012/