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22nd May 2007, 12:50 PM
#1
Discovery transmission no go
Hi all,
On my way home from uni today, driving along happily and suddenly lost all drive. There was a small clunk when it happened, not a loud bang. Car is a '95 discovery tdi auto 323k, still on original transmission and t/case. If the tranny is in park, it still holds the car on a hill so I'm ruling out transfer case or diffs and makes no difference in low or high range. I'm thinking torque converter or the tranny itself. Any way to diagnose before I start pulling it to bits? A cheap fix would be good as I'm a full time student. If it's the torque converter, are they available separately?
Tony
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22nd May 2007, 01:01 PM
#2
I doubt it would be the torque convertor but there's been a few cases of the flex plate (flywheel) cracking & eventually breaking.
Does it drive at all in reverse ?
I'm not sure with the 300Tdi set up but is there a cover in the front of the transmission you can remove the see if the flex plate spins while the engine isn't running ?
If not, there's a plate at the bottom of the bellhousing that you could remove to check.
Scott
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22nd May 2007, 01:50 PM
#3
No, definately no drive in any gears. Will check cover plate.
Tony
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22nd May 2007, 01:59 PM
#4
Wouldn't the car have trouble starting if the flex plate was broken? No inspection plate on the bellhousing but there is a small one on the front plate. This would only allow a view of the engine side of the flex plate.
Tony
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22nd May 2007, 03:37 PM
#5
yeah I think it would have a lot of trouble starting with a broken flex plate, unless youve got a crank handle you wont start it at all for that matter.
Sounds like a pump problem or main shaft.
Best to find another box IMHO, they are a bit pricey to fix I have heard.
It could have broken the pump drive shaft, I dont know much about the ZF boxes but all autos need the same drive componants and Borgy boxes used to break them for no reason and that is exactly what you have descibed.
I had a AU falc do it on me while sitting at a set of lights, for no reason it stalled and then when I restarted it I had no Forward or Rev but the park bulm still worked.
I would put a pressure gauge on the cooler line and see if youve got pressure there.
Coverters rarely crap them selves so I would be looking a little more internaly than that.
Goodluck, I do see it being cheap.
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22nd May 2007, 04:04 PM
#6
yeh check simple stuff first look enough fluid in auto and when last serviced zfs are a good auto but you say you have 323000 ks usually it between 300-400 k and its rebiuild time hope not but that thats a fair amount of ks you've done. 1000-1500 for good secondhand one (one on ebay at moment) and about 3-4000 for recond one in wa that is.
All the best Mark
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22nd May 2007, 04:18 PM
#7
And the most simplest way is engage the CDL and see if you have drive you could have done a diff which can happen
And if it drives disengage the CDL get some0ne to look under the car when in drive and with the foot brake on and see which tail shaft is turning and that will tell you which diff is broken if its a diff
Im surprised no one has mentioned this yet
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22nd May 2007, 07:04 PM
#8
New Torque Converter is $5500 from the UK. Reco one should be about $500. Torque converter shold not just go suddenly but begin to fail so will slip on hils and things like when the oil is low.
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22nd May 2007, 07:56 PM
#9
Thanks for reply guys. I'll have to sort out what I can do. That one on ebay is for a V8. Different input shaft I think and also larger torque converter.
Tony
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22nd May 2007, 07:59 PM
#10
Silly question, you have got fluid in the gearbox haven't you? Sorry if this question offends but the last person I helped out with a gearbox issue had no transmission fluid at all in there gearbox.
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