Thread: Td5 rapid coolant loss, passenger side, EGR valve.

The little hose was my thought.
Might be worth a drive to a radiator shop to get the system preshure tested if you can't find the source.

Also just read this thread...TD5 Leaking coolant plug, one more thing to look at.

Ok guys I have found the leak and I am very confused and I really hope someone can give me some info on this. I took off the heat shield for the turbo and the pipe was dry as a bone. I was doing some other work on the car when I noticed the coolant dripping. In the photos you will notice a small hole where coolant is leaking. The other (new) pipe is the power steering one as I replaced it not too long ago.

I was thinking what can I do? the hole must be there for a reason?? What would happen if I plugged it?

Thanks in advance guys.

Originally Posted by Franz

The pictures indicate you are using green coloured coolant - are you sure it's the recommended OAT type? I've heard of leaks being caused by using incompatible colloant additive and normally it's green.

That would be an awesome thing if that were my problem. do you know the recommended type? I only used this because 9 months ago or so I had a broken pipe and lost all coolant and just bought a bottle from super cheap auto that said suitable for 4WD. does it have to do with the thickness or what, sounds weird how one type would leak and another wouldnt.

Originally Posted by trevor

Ok guys I have found the leak and I am very confused and I really hope someone can give me some info on this. I took off the heat shield for the turbo and the pipe was dry as a bone. I was doing some other work on the car when I noticed the coolant dripping. In the photos you will notice a small hole where coolant is leaking. The other (new) pipe is the power steering one as I replaced it not too long ago.

I was thinking what can I do? the hole must be there for a reason?? What would happen if I plugged it?

Thanks in advance guys.

The hole is intended as an indicator that the seals/bearings in your water pump are stuffed. The fix is replacing your water pump.

It's worth pulling off the mounting bracket and replacing the o-ring mentioned earlier in the thread. If you remove the bracket the water pump can be replaced without touching the turbo or centrifugal filter drain. The trade off is you have to remove the fan and unbolt air-con, pas and ace pumps.

cheers
Paul

Originally Posted by OffTrack

The hole is intended as an indicator that the seals/bearings in your water pump are stuffed. The fix is replacing your water pump.

It's worth pulling off the mounting bracket and replacing the o-ring mentioned earlier in the thread. If you remove the bracket the water pump can be replaced without touching the turbo or centrifugal filter drain. The trade off is you have to remove the fan and unbolt air-con, pas and ace pumps.

cheers
Paul

Thanks so much for that info Paul. If i could get your advice once more.
I am looking at 2 water pumps on ebay and one from AB.
so the QH for 125 and 13 Postage. Ive heard QH is good. Land Rover DISCOVERY 2 & DEFENDER -TD5 WATER PUMP - Quality QH Brand!!!! | eBay

one no name brand for 88 and 13 postage. eBay Australia: Buy new & used fashion, electronics & home d

and an original from AB for 160 (and whatever it costs to post) Land Rover Water Pump Fits Discovery, Range Rover & Defender Vehicles

also why is the AB one so different to the ebay's?? the two do not look the same but all listings say they are for D2's??

This is the block side of the water pump bracket showing the aftermath of a leaking o-ring:



The o-ring is under $10.00 and straightforward to change once you have the bracket off.

Originally Posted by trevor

Thanks so much for that info Paul. If i could get your advice once more.
I am looking at 2 water pumps on ebay and one from AB.
so the QH for 125 and 13 Postage. Ive heard QH is good. Land Rover DISCOVERY 2 & DEFENDER -TD5 WATER PUMP - Quality QH Brand!!!! | eBay

one no name brand for 88 and 13 postage. eBay Australia: Buy new & used fashion, electronics & home d

and an original from AB for 160 (and whatever it costs to post) Land Rover Water Pump Fits Discovery, Range Rover & Defender Vehicles

also why is the AB one so different to the ebay's?? the two do not look the same but all listings say they are for D2's??

The image on the US rover parts site is not of the TD5 water pump.

The correct part number for the water pump is PEM500040
The bracket o-ring/seal is ERR6711

The advice I had when I did my pump last year was: Go with the original part (although the QH is apparently a good quality part). Avoid the no-name pumps.

The water pump is a critical part of the cooling system and it's not worth skimping.

cheers
Paul

Originally Posted by trevor

That would be an awesome thing if that were my problem. do you know the recommended type? I only used this because 9 months ago or so I had a broken pipe and lost all coolant and just bought a bottle from super cheap auto that said suitable for 4WD. does it have to do with the thickness or what, sounds weird how one type would leak and another wouldnt.

You need to get the pink OAT coolant.

Using the pink OAT wll not stop the leak but I am told that non OAT can cause all sorts of problems with your radiator and other bits of the coolant system.

So using the correct coolant mix will help prevent future problems rather than fix the current issue.

SuperCheap do stock the correct type.

Cheers,

Franz