Thread: 300tdi auto wont change when cold

from memory a gearbox oil and filter change should resolve it... I think there is a filter inside the ZF.

Oh dear

How many revs approx before it goes from 1st to 2nd? The theory is that contaminants enter the governor and cause this problem. You can change the governor in situ, but it is not a perfect solution.

A fluid change might mitigate the problem, it certainly won't hurt...

Originally Posted by B92 8NW

Oh dear

How many revs approx before it goes from 1st to 2nd? The theory is that contaminants enter the governor and cause this problem. You can change the governor in situ, but it is not a perfect solution.

A fluid change might mitigate the problem, it certainly won't hurt...

how hard is it to change the govenor ill be doing the oil and filter on the weekend

Certainly sounds like a sticking governor, and no they aren't an easy change. Transfer case off, extension housing off autobox and there it is. But I would do a fluid change etc first and try it as suggested.

JC

Originally Posted by justinc

Certainly sounds like a sticking governor, and no they aren't an easy change. Transfer case off, extension housing off autobox and there it is. But I would do a fluid change etc first and try it as suggested.

JC

Hi JC, I've read that it's an idea to do a couple of fluid changes (to try to drain most of the older fluid still caught up in the tc) if there's a problem like this...

Is this what you have found ???

regards - Laurie

Hi Laurie, I guess it depends on how filthy the fluid and the insides of the trans are in the first place. Both the ones I tried it on were pretty well 'unserviced' prior to this, IE the fluid looked like engine oil. One of them eventually had to have a governor replacement as it worked only in the short term, and the other vehicle was I think taken interstate so I couldn't comment on that one. Basically yes, If the oil is really disgusting I would do it several times, it can't hurt, as as you know the converter can't be drained and the volume of oil in them is quite a bit. Flushing the trans is possibly worth it, but I don't have one of those expensive flushing systems, I just drain and refill the trans and drive it, then drop the oil again and change filter etc and that is usually sufficient. Disconnecting a cooler line and running the engine etc is a recipe for another Exxon oil disaster

JC

thanks Justin (I enjoyed the word picture about oil going everywhere )

I was led to believe that the only definitive answer is a rebuild, as the problem will recur eventually because it is failing clutch packs that are depositing material in the governor assembly.

It's a precarious situation, putting in new oil [particularly a synthetic] could dislodge more contaminants and exacerbate the problem.

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