Which wire do I cut?

Drain your transmission fluid and pour it in your radiator. Eventually your transmission will stop shifting.

 

Every wire cut results ...

 

I told you not to ask. Now everyone will know. Gah!!!

 

Ok here is what you do fade.. first you need to locate the GPS tracking device in the truck. It's either above the headliner or under the dash. Cut that guy out of there and then you can modify the transmission harness any way you like and the dealer won't know..

 

Is the OP your friend??

 

Smitty is everyones friend

 

Where is op? I'm on my lunch break and I want to see how this turns out

 

GI Joe taught me everything I know in this life.

 

OP this thread needs your help! Please give us more !

 

gotta cut the fuel line if it's a turdgen

 

Good reference

 

Second independent verification:



This is now scientific law.

Wait, that's G.I. Joe??? I thought that was a cartoon Magnum P.I.

 

The Throttle Position (TP) sensor is located on the throttle body of a fuel injected engine. This type of sensor is known as a potentiometer. A variable resister used to control voltage in a circuit. The TP sensor is used to detect engine load. Its output is shared by the PCM and the TCM. This sensor's input signal along with the vehicle speed sensor are used by the TCM to provide optimal shift timing.

Most TP sensors have extra pins for extra internal functionality, but for this discussion we look at three terminals and this sensors relation to automatic transmission performance. This is because a faulty TP sensor will cause erratic shift timing and affect torque converter engagement.


One lead is connected directly to the computer's 5-volt reference voltage supply. The opposite end of this internal resistance strip is connected to ground. Another is connected to the PCM. This wire is connected to the movable arm that swipes across an internal resistance strip sending a varying voltage signal back to the PCM. This signal indicates the engine's throttle angle. This is called the signal circuit of the sensor, because it's the lead the sends the varying voltage signal to the controller indicating the changes in throttle angle.

The sensor is attached to the throttle plate shaft and changes output voltage as the throttle plate opens and closes. The output voltage will be low or around 0.45 volts if the throttle is closed and will be high or 4.5 volts at (WOT) Wide Open Throttle. The fuel injection and ignition timing are adjusted by the PCM as the throttle plate and TP sensor are moved. If the driver suddenly accelerates their vehicle, the PCM would receive this 4.5 volt signal and increase the fuel injection timing to compensate. This would also indicate to the TCM that a downshift is needed.
What I think is that toyota has given our trucks a bad TP sensors and can live without a recall due to the trucks still shift.just not the way we would like or are used too.

 

There is no separate tps on our trucks fade. It is built into the electronic throttle body assembly. The tp sensors in your write-up with a low of .5 volts and a hi of 4.5 volts are on the 1st gen throttle cable systems.