124 OM606 Stiff Accel. Pedal

[stig]

Hi to you diesel guys

I have a 124 300D OM606, the car has a very stiff accel. pedal from over half way down. I've checked all linkages and cables, they're good. I have disconnected the injector pump linkage and when you push it simulating pushing the pedal, it moves nicely as it should then feels like it hits an internal spring/diaphragm, it will move to full throttle stop but is much harder to push, which is where the stiff pedal is coming from. Does anyone know what it could be hitting inside the pump? It is not the vacuum regulator for the auto, I have removed this for trouble shooting. It feels like and sounds like it may be hitting the idle control electric unit on the back of the pump, could this be so? The car does also have a small issue when returning to idle as it 'hunts' a little before settling into a smooth idle. Any suggestions? Thanks all.

 

[BlackC55]

A stiff pedal is very normal. They are so bad they make your foot ache.

 

[ASHW124estate]

Hi everyone, bit new to this forum system here but got help before.

Working through snag list on a 1994 W124 Estate 300D.

Accelarator pedal and how to get the rusty metal plate that is around it and below it off so I can refurbish it? I looked on Pelican Parts form m and their guide applies to a LHD car which is just not at all like what I see in mine.

Any help would be great.

Thanks