No throttle response

ARTHUR_K

MEMBER
2006 VOLKSWAGEN TOUAREG
3.0L
V6
TURBO
4WD
AUTOMATIC
100,000 MILES

I have the vehicle listed above with one problem. The rig idles fine, when I floor the accelerator pedal it will rev up to the redline. However, if I put it in drive or reverse, especially on a slight raised ground, the accelerator stops working. Zero throttle response as if the car is shut off. But when picks up speed, it drives just fine changes the gears perfectly.

Kindly advise,
Regards.

1 Reply

JACOBANDNICKOLAS

MECHANIC
108,269 POSTS

Hi,

This could be a couple of things. The throttle valve is operated by the throttle drive according to the instructions of the Engine Control Module (ECM). Signals are sent to the ECM from the accelerator pedal position sensor and throttle position is determined and set.

What we need to do here is this. The can-bus needs to be scanned so we can determine if there is an issue within the ECM circuit, or if there is a sensor fault.

CAN stands for controller area network. Basically, all computers and modules are tied together via a few wires. The systems communicate via this network. If there is a diagnostic trouble code stored, this will retrieve it regardless of the module in which it's stored. Here is a video showing it being done.

https://youtu.be/u-4syLc-ifQ

If we don't get codes, then it will become a guessing game trying to determine what to test next.

Let me know if that is something you can have done. If not, we'll start at the accelerator pedal position sensor (APP) and work our way through.

Take care,

Joe