Many of you have read my loss of power thread. I need an expert on tranny and motors. My dealer told me that the throttle acculater is linked to the tranny and could be the cause of my loss of power. Need to know if could be true and is it an easy fix. Does anyone know?

 

I'd stop going to that dealer...

Your driveline is computer (PCM) controlled. Hell you dont even have a cable between your gas pedal and the throttle. Let alone a throttle acutator. Those are relics of the past. But then again, unless you have a TH350/400 or a non electronic 4l60.

 

Your tranny does receive a signal from the accelator pedal for DBW, but that just lets the computer know when you smash on the pedal, and downshifts it for you. But I would think something caused your truck to go into "Limp mode" and keeping it there. Since you did have all of the torque management removed your tranny could be on its way out, unless you have a built tranny in there.

 

Heh after re-reading the topic post. Iwas under the impression that the dealer was trying to tell you that there was a physical link between the throttle and the trans. But yea, what cbrich said and what you said in your other thread in 'Tuning and Diagnostics' makes me support the limp mode being the cause.

 

I don't have a built trans, its just stock. Its a 4L60e. I was trying to say that the link between the trans and throttle was electronic, but I guess not. What is limp mode? Can this be an easy fix? Hell it just maybe the trans!! One person said that it maybe a cracked stator plate. Should I have them put some torque management back in?
I know I ask alot of questions guys, but I'm don't know enough about these newer trucks.

 

The trans pulls pretty hard at mid range and top end, but could there be something wrong in the low end dept.?

 

Sounds like the dealer was referring to torque management/abuse management. The throttle, tranny and everything else are linked to the computer(PCM). The PCM looks at all inputs and decides how much power you are allowed to have, how and when the trans shifts, etc. For example, a WOT launch will result in the PCM reducing engine output to protect the drivetrain. This can be changed by reprogramming the PCM.

You would know it if you were in Reduced Engine Power(limp) mode. There is no throttle response and the vehicle would barely roll. You would have to turn the vehicle off for a minute or more to allow the PCM to reset(as long as the problem does not persist). This only occurs if there is a problem with a critical sensor, unexpected data, etc.

 

Well, it sounds about right. Would the throttle hestiate from idle? And it sounds like its sucking air at the throttle body when hitting the throttle. Will the PCM make this do what you saying? It just doesn't have that crisp throttle response anymore.

 

Sounds like the dealer was referring to TM but that doesn't sound like your isuue. TM would not change over time. First thing I would suspect is the tune if that has been altered.

 

there is a acutator by the gas pedel check the wires to it and the connectors their that could cause this also and i change a few of them