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  #1  
Old 28th-July-2009, 17:33
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Location: Xativa Nr Valencia Spain
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Default P38 auto gearbox problem

Hi to you all. I have a 96 diesel and I am getting very heavy gear changes with thumping this started on going down the box particulary on the low gears but now its on all changes also my interior lights have stopped working have checked fuses all ok hope someone can help with these problems
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  #2  
Old 29th-July-2009, 20:55
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Default Re: P38 auto gearbox problem

Hasnt anyone any ideas on my gearbox or interior light problems
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  #3  
Old 29th-July-2009, 21:05
wammers's Avatar
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Location: Preston Lancs.
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Default Re: P38 auto gearbox problem

Quote:
Originally Posted by eldescans View Post
Hi to you all. I have a 96 diesel and I am getting very heavy gear changes with thumping this started on going down the box particulary on the low gears but now its on all changes also my interior lights have stopped working have checked fuses all ok hope someone can help with these problems
Could be a variety of things sticky valve block, govenor clogged up with debris. Take a look at Ashcroft transmissions they have a FAQ area i think. Interior lights, have you tried pushing the centre switch on front interior light for more than five seconds, dash message will say interior light active. Or at least mine does, you can switch them off the same way, if someone has inadvetantly done that it maybe your problem.
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Old 29th-July-2009, 21:19
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Default Re: P38 auto gearbox problem

Quote:
Originally Posted by eldescans View Post
Hi to you all. I have a 96 diesel and I am getting very heavy gear changes with thumping this started on going down the box particulary on the low gears but now its on all changes also my interior lights have stopped working have checked fuses all ok hope someone can help with these problems
hi,i had similar problems with my auto diesel,changed the g/box filter and re-filled with lucas atf,this has made a vast improvement to my g/box.pm me if you want and i will give you more details of the atf.
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  #5  
Old 31st-July-2009, 09:24
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Default Re: P38 auto gearbox problem

Thanks for the replies pressing light switch has cured problem need to investigate gearbox problem more have changed filter but cannot put lucas atf in as I live in spain and its not available do you have any more information on cures for stickey valve block or blocked govenor thanks again
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  #6  
Old 31st-July-2009, 13:14
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Location: North Somerset
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Default Re: P38 auto gearbox problem

Have similar issue with my box and have been advised to remove and clean the governor (although my local garage said they've done this a few times and it didn't improve things), I'll do this when I get chance and see what happens.

I changed my filter and oil but it didn't get any better, in fact if you look at Ashcroft website FAQ they are now saying that the oil can dislodge debris and make the problem worse.

I'm going to do the governor and if that doesn't work I'll just live with it until I need a new box
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  #7  
Old 16th-August-2009, 18:10
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Default Re: P38 auto gearbox problem

I am still experiencing heavy gear changes am thinking of looking at the govenor and valve block where are they and what do I need to look for
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Old 16th-August-2009, 18:50
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Default Re: P38 auto gearbox problem

Quote:
Originally Posted by eldescans View Post
I am still experiencing heavy gear changes am thinking of looking at the govenor and valve block where are they and what do I need to look for
PM sent.
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  #9  
Old 29th-October-2010, 14:35
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Join Date: Aug 2010
Location: Bucharest
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Default Re: P38 auto gearbox problem

Hi, I have a strange problem with my automatic gearbox on a P38 4.0 liter.
It run only in "R" position, when I am putting it into "D", "3", "2", "1" it is not happening anyting... I have to mention that the car is 1999 model.
Any ideas for fixing this problem?
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  #10  
Old 29th-October-2010, 16:40
Derek Ward's Avatar
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Location: Happily Ex Blackburn, Now Blairmore, Argyll & Bute
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Default Re: P38 auto gearbox problem

An exchange gearbox unfortunately. Someone else had the same problem on here not so long ago.
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