nathan5346
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i got a 3.9 auto disco and may have a problem... when i 1st drive it from cold it doesnt seem to what to change up a gear for about a mile after that it drives great.. any ideas?
disco auto
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Trewey
Cockernee, Pasty munchin bastid.
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when was the oil in the box last changed?
is there any oil in the box?
is there any oil in the box?
nathan5346
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The mota has been well maintainted, ive checked the oil its a little over max and it looks very clean dont know when it was last changed
fireman-andy
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Are you checking the engine oil or gearbox oil????
also I know the 4.0 auto (i think the box is the same) is meant to 'hold' onto gears longer when cold to aid warmup and smooth running when cold. what do you mean by reluctant?
also I know the 4.0 auto (i think the box is the same) is meant to 'hold' onto gears longer when cold to aid warmup and smooth running when cold. what do you mean by reluctant?
nathan5346
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Im checking the right dip stick you said 'reluctant' being a good word.....its does 'hold on to the gears longer' dont think it gets out of 1st tbh till its done around a mile
discool
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Mines a bit slow but only on a very cold morning mid winter but then only for 30 yards, the engine dosen't like the cold either untill we have done 100 yards or so.
This has been copied from Ashcrofts site:
I have a 4 speed ZF Auto and it sticks in first gear in the morning or when cold and is reluctant to change up from 1st gear. Once the gearbox has warmed up it shifts normally. Why?
The governor valve is sticking, which can be caused by contamination. i.e. clutch plates or other parts disintegrating. The fine debris finds its way past the filter and tends to accumulate in the governor, causing it to stick. A temporary solution is to remove and clean the governor. The problem will often recur as debris from damaged parts continues to build up in the governor. If the problem continues after cleaning the governor then it may be necessary it replace your Autobox.
We have noticed many customers reporting this fault starting a few days after an oil and filter change and after researching this using our experience and the expertise of others in the trade we have come to the conclusion that as ATF oil is a detergent type oil, when the oil is changed this will dislodge and stir up settled debris in the autobox which in turn jams the governor valve. In light of this although it sounds controversial it is debateable if changing the oil and filter is a good idea, some say if the box it going to fail it will fail if the oil is good or bad and their advice is leave it alone. I am still undecided but the truth is I get a lot of calls from customers thinking they are looking after the autobox by servicing it and a few days later this fault occurs.
This has been copied from Ashcrofts site:
I have a 4 speed ZF Auto and it sticks in first gear in the morning or when cold and is reluctant to change up from 1st gear. Once the gearbox has warmed up it shifts normally. Why?
The governor valve is sticking, which can be caused by contamination. i.e. clutch plates or other parts disintegrating. The fine debris finds its way past the filter and tends to accumulate in the governor, causing it to stick. A temporary solution is to remove and clean the governor. The problem will often recur as debris from damaged parts continues to build up in the governor. If the problem continues after cleaning the governor then it may be necessary it replace your Autobox.
We have noticed many customers reporting this fault starting a few days after an oil and filter change and after researching this using our experience and the expertise of others in the trade we have come to the conclusion that as ATF oil is a detergent type oil, when the oil is changed this will dislodge and stir up settled debris in the autobox which in turn jams the governor valve. In light of this although it sounds controversial it is debateable if changing the oil and filter is a good idea, some say if the box it going to fail it will fail if the oil is good or bad and their advice is leave it alone. I am still undecided but the truth is I get a lot of calls from customers thinking they are looking after the autobox by servicing it and a few days later this fault occurs.
fireman-andy
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I am about to change my gearbox oil but am having second thoughts , I was going to do an oil and filter change then do another oil change a week or 2 later to get rid of any 'dislodged' debris.
I know the pros and cons ,but I believe that regular oil changes have to be a good thing........ perhaps after the 2nd change if there are still 'bits' a 3rd may be in order???
I have looked on Rave and cant find a governor valve anywhere , is it called something else as well????
I know the pros and cons ,but I believe that regular oil changes have to be a good thing........ perhaps after the 2nd change if there are still 'bits' a 3rd may be in order???
I have looked on Rave and cant find a governor valve anywhere , is it called something else as well????
Last edited:
nathan5346
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best left till it ****s up completely then
nathan5346
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seems pretty daft to have a filter that doesnt filter but then again i s'pose its a l/r thing
nathan5346
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BTW, Anyone got a grey leather interior i can buy/
