P38 Auto box

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Colin1

Colin1

New Member
Posts
88
Location
Bradford Yorkshire
Hi. Are all p38 2.5 DT auto boxes noisy when cold or just warming up as you drive . Mine is but when hot no noise at all, dose my head in .. I think i much prefer the manual
 
mine used to be like that untill i changed the oil and filter autos need regular oil changes
 
Yeah changed oil / filter 2 weeks ago . It is like a vibration rattle with out the vibration if you know what i mean , like something is vibrating when engine gets to 2500 revs then goes away at higher revs then when hot the noise stops all together . Dose not make a noise when cold at lower revs
 
Sounds like friction plates have a rattle or maybe your flex plate if it rattles in nuetral and when you put it in drive it goes quieter more than Likely flex plate
 
defender300td1 said:
Sounds like friction plates have a rattle or maybe your flex plate if it rattles in nuetral and when you put it in drive it goes quieter more than Likely flex plate
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Not a sound from it in neutral , only starts when revs get around 2500 and goes when gets to 2700/ 2800 in drive . when fully warmed up nothing and sounds sweet. While all this is going on the box will change gears without problem.
 
Hi Keith, Oil level OK in auto box but must confess not done the transfer box yet but also not used the RR much since then only done about 19 mile . It is hard to explain the noise , at first i thought it was something in the engine bay like an heat sheald vibrating at a said rev but thought that would not go away when warm or up to operating temp . other than the noise the box works well and change gear very smooth but only has the noise at a set revs when cool . Going to check the level again today and also the transfer box .
 
Mines been doing it for a year now I have done the rattle from the flex plate but I have the exact symptoms as yours in the rev range mine does it just before 3000 and there after at the same revs for each change until lock up.

I put it down to worn friction plates I'm not having box off again I've cured the rattle from flex plate. mine isn't slipping so I'm going to wait for it to totally go then get box recon
 
Datatek said:
Looking back, mine had a similar rattle, turned out to be one of the under floor heat shields had come adrift.
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Don't know if the op has checked that I have secured mine still does it but then again if it was loose wouldnt do it only when cold .mine only used to do it when cold like op but in time had Progressively got worse since and does it when hot as well only not as bad .
That is what leads me to think friction plate wear only when it starts to slip will this be apparent untill then I'm not having box off for a torq converter untill kaput IMO its not cost effective I will wait until its slipping and have the box rebuilt and a new TQ.
 
defender300td1 said:
Mines been doing it for a year now I have done the rattle from the flex plate but I have the exact symptoms as yours in the rev range mine does it just before 3000 and there after at the same revs for each change until lock up.

I put it down to worn friction plates I'm not having box off again I've cured the rattle from flex plate. mine isn't slipping so I'm going to wait for it to totally go then get box recon
Click to expand...

Yeah , i am hoping it is not anything like that but if it is then i will have to deal with it. When i did the auto box oil / filter change the oil that came out was very clean really and i know the guy i got it from had not done a change in about 8 months going by the service documents .

Will check it over again today and if noise continues then may have to do the same as you ,lol. Would that Lucas Tranny fix help i wounder .
 
Colin1 said:
Yeah , i am hoping it is not anything like that but if it is then i will have to deal with it. When i did the auto box oil / filter change the oil that came out was very clean really and i know the guy i got it from had not done a change in about 8 months going by the service documents .

Will check it over again today and if noise continues then may have to do the same as you ,lol. Would that Lucas Tranny fix help i wounder .
Click to expand...
I have done oil and filter change and in time a another oil change , still comes out red .
I think untill they start slipping and the compound of the friction plate brakes down that is when you will have dirty oil the rattle is just a bit of play at the moment , as for lucus datatek recommends it worth a try but might stop slipping but if they have a rattle I Doubt it will cure that, it won't do any harm tho
 
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Datatek said:
The rattle was only present cold, as it warmed up with heat from the exhaust it stopped.
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Ok mine was that loose not even heat would stop the shield rattlin I have jammed that with a wedge so I know its not that I been to Ashcroft for him to check it diagnosis rattle in plates .

You see a box off and on is around the £400 mark with a TQ costing £150 that's a lot of money not even having the box recon so I thought it was better to have box off TQ and recon all together dont want to have box of twice waste of money.
 
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defender300td1 said:
Ok mine was that loose not even heat would stop the shield rattlin I have jammed that with a wedge so I know its not that I been to Ashcroft for him to check it diagnosis rattle in plates .

You see a box off and on is around the £400 mark with a TQ costing £150 that's a lot of money not even having the box recon so I thought it was better to have box off TQ and recon all together dont want to have box of twice waste of money.
Click to expand...
I know the problem. Just finalised the costs with Ashcrofts for mine and it's started working perfectly again:doh: I don't want to spend on replacement if I don't have to, being a pensioner I don't really have the cash to spare.
Might go the route of a second hand HP24 and graft that in. My only concern is the weight of the lump, getting the box out does not look easy.
 
Datatek said:
I know the problem. Just finalised the costs with Ashcrofts for mine and it's started working perfectly again:doh: I don't want to spend on replacement if I don't have to, being a pensioner I don't really have the cash to spare.
Might go the route of a second hand HP24 and graft that in. My only concern is the weight of the lump, getting the box out does not look easy.
Click to expand...

Everyone says take the transfer box off to reduce wieght but I think that's just more work and I don't like splitting joints For no reason I would recommend a garage becuase of the special jack and the ease or realigning the box so much easyer with the jack that can raise and tilt at the same time .it easy if it in the air but crawling about on the floor it isn't but you got a pit haven't you luck man
 
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defender300td1 said:
Everyone says take the transfer box off to reduce wieght but I think that's just more work and I don't like splitting joints For no reason I would recommend a garage becuase of the special jack and the ease or realigning the box so much easyer with the jack that can raise and tilt at the same time .it easy if it in the air but crawling about on the floor it isn't but you got a pit haven't you luck man
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A pit and a 2 stage multi tilt transmission jack. Transfer box will have to come off anyhow to fit to the replacement.
 
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