thank u for your reply,, how sharp should the transmission be to change gear ? i have had p38 dse autos and i could take a nap between gear changesAuto transmission , not so much an if but more of a when.........but as an owner I love it
that makes perfect sense ,, thank u very much,,
holidaychicken
Well-Known Member
Enjoy - http://www.rangerovers.net/rrmkiiiremedies.html
But mainly on the TD6 is the GM transmission on the 2002-2005 and even when it gets replaced they quite often don't get the underlying problem of the valve block addressed so not long after it goes again.
Apart from that, everything else !!
But mainly on the TD6 is the GM transmission on the 2002-2005 and even when it gets replaced they quite often don't get the underlying problem of the valve block addressed so not long after it goes again.
Apart from that, everything else !!
is the valve block within the transmission? ,,what testing can i perfom when looking at the vehicle,Enjoy - http://www.rangerovers.net/rrmkiiiremedies.html
But mainly on the TD6 is the GM transmission on the 2002-2005 and even when it gets replaced they quite often don't get the underlying problem of the valve block addressed so not long after it goes again.
Apart from that, everything else !!
holidaychicken
Well-Known Member
Yes the valve body / block is integral to the transmission but can be viewed with the transmission sump removed but without removing it you can't really test it.
The valve body pistons fail gradually providing low pressure to the torque converter which then burns out the clutch in the torque converter sending metallic debris into the transmission killing that.
This will normally happen around the 100k + mark, vibration under low revs up an incline is normally a warning of impending TC failure.
Then the transmission is rebuilt and TC replaced but the valve body issue is not addressed which causes the clutch to fail again only quicker.
The valve bodies can have the piston bores reamed out and fitted with new pistons by sonnax i think it is.
http://www.rangerovers.net/forum/6-...8-sonnaxification-gm-5l40-e-valve-bodies.html
Anything you can find from Bemble or RRPhil (same person) across the net will be good advice.
The transmission could be functioning fine, the only way you would know would be if there is a receipt to tell you it has already been carried out.
Apart from that, gear changes should be smooth, not delayed in either forward or reverse or hanging onto gears too long, and no banging into gears, if it is the same as my 04 4.4 you shouldn't really know it is changing gear apart from an engine tone change.
The valve body pistons fail gradually providing low pressure to the torque converter which then burns out the clutch in the torque converter sending metallic debris into the transmission killing that.
This will normally happen around the 100k + mark, vibration under low revs up an incline is normally a warning of impending TC failure.
Then the transmission is rebuilt and TC replaced but the valve body issue is not addressed which causes the clutch to fail again only quicker.
The valve bodies can have the piston bores reamed out and fitted with new pistons by sonnax i think it is.
http://www.rangerovers.net/forum/6-...8-sonnaxification-gm-5l40-e-valve-bodies.html
Anything you can find from Bemble or RRPhil (same person) across the net will be good advice.
The transmission could be functioning fine, the only way you would know would be if there is a receipt to tell you it has already been carried out.
Apart from that, gear changes should be smooth, not delayed in either forward or reverse or hanging onto gears too long, and no banging into gears, if it is the same as my 04 4.4 you shouldn't really know it is changing gear apart from an engine tone change.
thank you very much for your reply, and for taking the time to help me
holidaychicken
Well-Known Member
No problem , if you have P38s you are already infected so you know the prognosis for RR owners and the L322 parts are getting much cheaper so just try and get one with some honest history and try not to get one with 'only a few issues' as these can turn expensive, decent RR specific diagnostics are a very good advantage and be prepared to fix some faults yourself
i know every inch of the p38s im more than willing to put the spanners to work,, the one im looking at has a fantastic servive history with 250k on the clock ,,
holidaychicken
Well-Known Member
250K is a lot of miles but I would imagine most of it has been replaced at least once although I know very little about the TD6 life expectancy
