Td5 Clutch Slip - Fuel Pressure Regulator?

Afternoon,

I've got a 2005 90, with a tuned up Td5 and have a wierd intermittent clutch slip problem... some days it doesn't slip, and some days it does (sometimes a lot). Usually when it does, it's when you're hitting the power band, and I can't get it to slip with the handbrake on etc like you would with a normal, worn out clutch (it was only replaced in 2010, about 4/5k miles ago). It's been happening for a while but my local garage at the time couldn't figure it out.

After doing some research on the net, I found someone had the same problem and it was to do with the common Td5 fuel pressure regulator problem, with diesel leaking down the back of the engine and down the driver's side of the bell housing. Looking under my 90, I can see it's quite damp around that area...



So I reckon diesel could be leaking from here, and a small amount getting into the bell housing contaminating the clutch, causing it to slip when under heavy load, then once very hot ie a long journey; burning off so it doesn't slip anymore thus being intermittent.

What do you guys think to this theory? I've looked into the FPR leak, and there's mixed feelings on either replacing the whole FPR unit because the unit can wear, or just the O-rings and gasket because some say it's just those that go? I'd rather spend a tenner on an eBay replacement seal kit, but don't want to waste my time taking such a fiddly thing apart then it not work lol.

Cheers in anticipation!

pca42 said:

... After doing some research on the net, I found someone had the same problem and it was to do with the common Td5 fuel pressure regulator problem, with diesel leaking down the back of the engine and down the driver's side of the bell housing. Looking under my 90, I can see it's quite damp around that area...

Click to expand...

Does your damp patch smell of diesel??

Oldseadog said:

Does your damp patch smell of diesel??

Click to expand...

There's not a strong smell of it, but I'll have another look (and smell) later/tomorrow now I've got rid of this bloody cold!

EDIT: As far as I can tell, it's diesel, but not 100% sure as the vehicle's been sat for a while so it's not fresh. I will try and clarify it again once I've driven it.

pca42 said:

Afternoon,

I've got a 2005 90, with a tuned up Td5 and have a wierd intermittent clutch slip problem... some days it doesn't slip, and some days it does (sometimes a lot). Usually when it does, it's when you're hitting the power band, and I can't get it to slip with the handbrake on etc like you would with a normal, worn out clutch (it was only replaced in 2010, about 4/5k miles ago). It's been happening for a while but my local garage at the time couldn't figure it out.

After doing some research on the net, I found someone had the same problem and it was to do with the common Td5 fuel pressure regulator problem, with diesel leaking down the back of the engine and down the driver's side of the bell housing. Looking under my 90, I can see it's quite damp around that area...

So I reckon diesel could be leaking from here, and a small amount getting into the bell housing contaminating the clutch, causing it to slip when under heavy load, then once very hot ie a long journey; burning off so it doesn't slip anymore thus being intermittent.

What do you guys think to this theory? I've looked into the FPR leak, and there's mixed feelings on either replacing the whole FPR unit because the unit can wear, or just the O-rings and gasket because some say it's just those that go? I'd rather spend a tenner on an eBay replacement seal kit, but don't want to waste my time taking such a fiddly thing apart then it not work lol.

Cheers in anticipation!

Click to expand...

if its any help ! i had a leaky FPR on our td5 i fitted a new one £100 plus just to have it leak again 3 months later i then got a repair kit off ebay for a tenner ... easy to fit ...and no probs since

I realise this is an old thread but just to say that I had this problem. Kit off ebay stopped the leak. The clutch is still slipping slightly but hopefully will eventaully burn off any remaing contamination. Easy to fit on defender (slightly more awkward on disco)