Thread: Hard accelerator pedal

Fuel pump or injector pump ? Unless the spring has been replaced it shouldnt be hard at all.

The injector pump. Disconnect throttle cable and kick down cable and all good. There is a lot of tension from that spring.

Have you checked the load on the kickdown cable on its own, the pump throttle lever spring tension should not be that heavy as has already been said.
Too heavy tension on the spring, if that is what it is, could cause premature wear of the spindle, bush and seal of the throttle shaft.
Hard to see how spring tension could be wrong as it is the "hairpin" type, each end attaches to a fixed point, unless they fitted a much heavier spring than original.
Just another thought is the accelerator cable attached to the outer end of the lever on the pump, that could change the mechanical advantage significantly if it was not, I have heard criticisms of the "slow" throttle movement of the Tdi's and some guys move the accelerator cable connection point closer to the throttle shaft i.e. decreasing the radial length, it makes the throttle moves more quickly in relation to the pedal but makes the action harder.

Originally Posted by gazby

Have you checked the load on the kickdown cable on its own, the pump throttle lever spring tension should not be that heavy as has already been said.
Too heavy tension on the spring, if that is what it is, could cause premature wear of the spindle, bush and seal of the throttle shaft.
Hard to see how spring tension could be wrong as it is the "hairpin" type, each end attaches to a fixed point, unless they fitted a much heavier spring than original.
Just another thought is the accelerator cable attached to the outer end of the lever on the pump, that could change the mechanical advantage significantly if it was not, I have heard criticisms of the "slow" throttle movement of the Tdi's and some guys move the accelerator cable connection point closer to the throttle shaft i.e. decreasing the radial length, it makes the throttle moves more quickly in relation to the pedal but makes the action harder.

I will take your advice and check tomorrow. Will let you know of outcome.