xk8 gear box trouble

xk8 gear box trouble

Author
Discussion

jonboy07

Original Poster:

220 posts

194 months

Saturday 21st June 2008
quotequote all
hi
i recently changed the oil in my 1996 xk8, its just done 100k, dont think its ever been changed before, when i drove the car to check it, it seems to drive fine but theres now a slight grinding noise thropugh some of the gears, a specialist said this is typical and the box has had it, any ideas if this is correct and how much it would cost to fix ? thanks

Ordinary Bloke

4,559 posts

200 months

Saturday 21st June 2008
quotequote all
jonboy07 said:
hi
i recently changed the oil in my 1996 xk8, its just done 100k, dont think its ever been changed before, when i drove the car to check it, it seems to drive fine but theres now a slight grinding noise thropugh some of the gears, a specialist said this is typical and the box has had it, any ideas if this is correct and how much it would cost to fix ? thanks
I know sod all about XK8's but someone will soon be along to ask how much oil did you put in, and what type/brand of oil? Was it ok before you changed the oil, or was there already some grinding noises?

Good luck...

GavinPearson

5,715 posts

253 months

Sunday 22nd June 2008
quotequote all
If the car can go into Drive on a slope such as a multi storey car park ramp then there is enough oil in the transmission.

However there may be too much oil.

These transmissions require setting with the Jag PDU or equivalent to get the very best of them, but if the car moves using it's own power then you don't need to worry about seizure.

Too much oil is bad as it starts to froth and so you lose drive & can get slip.

While the 5HP24 is quite quiet some noise at 100K is not unusual, and as you'd need all new gearsets to get to an as-new condition I'd just try to make what you have last.

jonboy07

Original Poster:

220 posts

194 months

Monday 23rd June 2008
quotequote all
i dont know how much oil was put in but he filled it up to the plug he filled it from( at the back just above the sump) he " the best of oil" he said, it selects drive fine and gose through the gears apart from the grinding noise and it is definetly sliping too, getting worse too, the oil that came out was like black water, do u think i could get this fixed on warrenty, it covers pretty much everything to do with the gear box? thanks for the help

ps: how long do u think this will last?

GavinPearson

5,715 posts

253 months

Tuesday 24th June 2008
quotequote all
jonboy07 said:
i dont know how much oil was put in but he filled it up to the plug he filled it from( at the back just above the sump) he " the best of oil" he said, it selects drive fine and gose through the gears apart from the grinding noise and it is definetly sliping too, getting worse too, the oil that came out was like black water, do u think i could get this fixed on warrenty, it covers pretty much everything to do with the gear box? thanks for the help

ps: how long do u think this will last?
The oil coming out like black water is normal. I'd be more worried about what went in. If it is slipping when warm it could be due to oil frothing. The oil that should have been used is Esso LT71141. That is clear in colour, and if they put Dexron 3 in (red) that isn't good. Now at 100K you don't know if the transmission was due for a rebuild or not, but one thing is for sure that if you drive with the trans slipping you will see the rebuilder very quickly indeed.

So the first step if it's a warm frothing issue is to go to the dealer and get the oil level set. If the issue is seen at all times I'd start considering your options and bank balance.

If the oil guy put the wrong stuff in (no excuses are permissible, it is stamped on the oil pan and is in all the dealer literature) I'd get the small claims court papers sent over.


jonboy07

Original Poster:

220 posts

194 months

Tuesday 24th June 2008
quotequote all
thanks for the info, ye it was red stuff he put in, im not sure if it dose it when cold, but what about the grinding noise, is this f**ked now, the noise was there alomost straight away after the change, and when kicking down or sleecting drive somtimes, there can be quite a thud from the driving wheels, this is my first auto so i dont know if this is normal? thanks for all the help

GavinPearson

5,715 posts

253 months

Wednesday 25th June 2008
quotequote all
jonboy07 said:
thanks for the info, ye it was red stuff he put in, im not sure if it dose it when cold, but what about the grinding noise, is this f**ked now, the noise was there alomost straight away after the change, and when kicking down or sleecting drive somtimes, there can be quite a thud from the driving wheels, this is my first auto so i dont know if this is normal? thanks for all the help
It really doesn't sound good to me.

The 5HP24 is an extremely refined transmission so I would say it is abnormal.

You need the car to be checked out by an expert.

jonboy07

Original Poster:

220 posts

194 months

Wednesday 25th June 2008
quotequote all
thanks for the help, gonna get it checked out in the next week or so, got warrenty with it , so should be ok, thanks

jonboy07

Original Poster:

220 posts

194 months

Sunday 29th June 2008
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its starting to look like i might of been fu**ed over with my warrenty( shock!) does anyone know roughly how much i should be looking to pay to have it reconditioned, plus does anyone know how much oil the box holds, he put in 4 liters( of the wrong oil) and a litle came back out, is this right? thanks

james S

1,615 posts

247 months

Sunday 29th June 2008
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VMTP of Hayes did mine £1,400

jonboy07

Original Poster:

220 posts

194 months

Thursday 3rd July 2008
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ye thanks, need some were in scotland though, and is,nt that abit expensive? thanks

Shar2

2,225 posts

215 months

Thursday 3rd July 2008
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£1400 + sounds right for a reconditioned gearbox. Try www.xkec.co.uk forum for information on Scottish independents.

jonboy07

Original Poster:

220 posts

194 months

Monday 14th July 2008
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thought i had it sorted, the guy from the garage said that he had to drain the torque converter or something? the noise has gone and it drives ok, well apart from what i think in 5th gear upto about 2500 revs, then it feels like its draging somthing and the rev needle sticks at 2500, but its ok i think when u put the foot down, any ideas? thanks

Myobb

175 posts

224 months

Monday 14th July 2008
quotequote all
Ordinary Bloke said:
jonboy07 said:
hi
i recently changed the oil in my 1996 xk8, its just done 100k, dont think its ever been changed before, when i drove the car to check it, it seems to drive fine but theres now a slight grinding noise thropugh some of the gears, a specialist said this is typical and the box has had it, any ideas if this is correct and how much it would cost to fix ? thanks
I know sod all about XK8's but someone will soon be along to ask how much oil did you put in, and what type/brand of oil? Was it ok before you changed the oil, or was there already some grinding noises?

Good luck...
If you konw "sod all about XK8´s" why on earth reply or are you suffering (given your approx 2500 responses) suffering from verbal & written diarrhoea?

Ordinary Bloke

4,559 posts

200 months

Monday 14th July 2008
quotequote all
Myobb said:
Ordinary Bloke said:
jonboy07 said:
hi
i recently changed the oil in my 1996 xk8, its just done 100k, dont think its ever been changed before, when i drove the car to check it, it seems to drive fine but theres now a slight grinding noise thropugh some of the gears, a specialist said this is typical and the box has had it, any ideas if this is correct and how much it would cost to fix ? thanks
I know sod all about XK8's but someone will soon be along to ask how much oil did you put in, and what type/brand of oil? Was it ok before you changed the oil, or was there already some grinding noises?

Good luck...
If you konw "sod all about XK8´s" why on earth reply or are you suffering (given your approx 2500 responses) suffering from verbal & written diarrhoea?
Well, two reasons really. Firstly to bump this thread so an XK8 enthiusiast might see it at the top of the list and help out another car enthiusiast, which is what I think happened.

Secondly, to find out what oil he put in (spry crisp-and-dry?) because it sounded like it had the wrong oil, or the wrong amount. Which is what I think happened.

But why on earth have you posted this, Myobb, it doesn't really benefit anybody, does it? No wonder you don't bother posting often!




My diarrhoea is very real, not verbal or written, I can send you a sample if you give me your address...wink

Edited by Ordinary Bloke on Monday 14th July 21:16

adu

100 posts

194 months

Thursday 17th July 2008
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Hi johnboy, its normally a two man quite complex op to change the gearbox oil in an 8 , and there is only one oil that should be used , the esso LT71141 as mentioned earlier, if you have any other oil in there i would suggest getting it out and replacing it with the correct stuff before unrepairable damage is done, by doing this you may just save the box, to change it correctly the engine needs to be warming the box up to a certain temp, some brilliant articles on this at www.xkec.co.uk, well worth the joining fee, should take around 7litres of oil if my memory serves me well, i personally would give it a flush too , another thing to bear in mind is that the xkr gearbox is different from the 8 , and will take a couple of different oils, maybe this is where the confusion lies,
hope you get it sorted mate, best wishes >>andy

adu

100 posts

194 months

Thursday 17th July 2008
quotequote all
just had a look at the article on the xkec, gearbox takes 7.5 litres of oil, after filling it to overflowing ,( cold gearbox ) it should then be warmed up by starting and running through gears slowly, this enables more oil to be added as the oil is circulated through the torque converter, so the 4 litres really was'nt enough, and if im right in thinking, you may now have dextron mixed with whatever was left of the original esso, IMHO i would'nt drive the vehicle untill all of the oil was removed from the box and filled properly with the correct oil, also i would imagine that most independant gearbox specialists would'nt know how to change the oil in an xk box correctly, however when i come to have mine changed i will be taking the article from the xkec site with me and running through it with them exactly what i want doing ,
hope this helps mate , not nice having your P and J sick
>>andy

jonboy07

Original Poster:

220 posts

194 months

Friday 18th July 2008
quotequote all
thanks for the input, really helpfull, the guy's on holiday just now (shock)but ill get right on it as soon as he's back thanks again

Tame Technician

2,467 posts

206 months

Friday 25th July 2008
quotequote all
The oil that box is supposed to have is a kinda golden brown, (like new engine oil) not red, red is normal ATF.

You have to fill it til it comes out of the fill hole,(at the back of the box) then run the engine + go thought gears, at this point the level drops then you can put more in to get back to the level and the level should be set when the oil temp reaches a particular temperature, I cant quite remember but 35 rings a bell.

Jaguar said the oil never needed changing, but the reality is if you change it every 60k the boxes never die, one that never get changed often die around 120k mark, die boxes usually make loud grinding noises, they dont usually slip in my experience.

I'm sorry to say its sounds like who ever changed the oil, stuffed your gearbox to me. Ring your local dealers parts dept, ask how much for a litre of oil you your gearbox, think you will find its around £20 and theres a 5 litres + in there. Did you get charge £100 just for oil, if not its not the right stuff. Sorry, but hope this helps.

jonboy07

Original Poster:

220 posts

194 months

Monday 28th July 2008
quotequote all
ye thanks, it been a great help, defo the wrong slippy stuff, had the red stuff in for about 3 weeks now, but will change it soon, do u think there will be much damage, and do u think it will go bk to normal, still drives the car ok, obvs apart from above, thanks for the help