Quote:
Originally Posted by martureo
Yeah, it shakes enough to rock the car at idle. But it's not a continuous shake like the mounts are gone. It's like someone is standing next to my car and pushing in time with a single cylinder.
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Online diagnosis of idle problems can be a challenge.
This SOUNDS like what is sometimes referred to as "lope". It's the rythmic rocking that results from end float in the cam inside the injection pumps on the turbodiesels -- which is what the rack damper bolt is adjusted, to remove. It is quite distinct from a miss (though it can get bad enough to almost mimic one). Usually accompanied by the car rocking from side to side.
Do you have the original, silver colour bolt or the updated gold rack damper bolt?
If you have the silver one from the factory, you should start by upgrading to the gold one. These are longer, the original silver ones were slightly short and can't adjust out lope on the cars as they age.
Not all of the turbodiesels will idle at the same speed, not happily anyway. Idle adjustment is a dance between setting up the idle speed and adjusting the bolt. Even with the new rack damper bolt, it can be a long process. I have owned five turbodiesels and they had about three 'ideal' idle speeds, between them. When the car gets to the mileage of yours, component wear in the pump and the pump governor come into play. Trying to get the idle to a factory spec isn't necessarily going to happen.