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Old 10-09-17, 13:46
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Airbornespud Airbornespud is offline
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T4 Post Icon Coolant leak.. Any suggestions?

I'm new to the T4 world, and i'm willing to learn everything that I need to maintain my new (19 year old) T4 panel van.

I picked up a 1998 1.9TD Panel van yesterday. Drove 250 miles after picking it up with no issues. 5 minutes from home the coolant light started flashing. I waited for it to cool down and topped up the tank with coolant.I have looked again today and have found a drip coming from the spindle(?) that pumps the water around the engine. Other than leak stop, what do i need to replace to stop this from happening?

Pics will follow if it helps?
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Old 10-09-17, 13:51
mindriot mindriot is offline
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Default Re: Coolant leak.. Any suggestions?

New water pump, the shaft seals are failing, if its gone that far its extremely hard to believe the seller didnt know about it btw.

Hopefully it hasnt had knock on effects, like repeated overheating killing the head gasket.
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Old 11-09-17, 13:54
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Thumbs up Re: Coolant leak.. Any suggestions?

I've just ordered the new pump. Luckily the van doesn't need to go anywhere, so I'm going to put some radweld in tonight and await the arrival of the water pump!

Thanks for your help @mindriot.
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Old 11-09-17, 14:36
mindriot mindriot is offline
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Default Re: Coolant leak.. Any suggestions?

I once bought a passat at auction, it quickly started dong the same as in dropping coolant and overheating, initially thinking it was head gasket I put in some of the usual rubbish that rarely works, all it did was leave a stain that proved it was the pump shaft leaking. I then changed the pump, to discover that I really did also have a failing head gasket.

I assume you checked the leak wasnt coming from anywhere else?
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Old 11-09-17, 18:19
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Default Re: Coolant leak.. Any suggestions?

Yes ive had a look to check as thoroughly as i can. I'm going to hold off on the radweld as I'm pretty sure it's just a busted water pump.

Luckily, the engine bay is filthy so any leaks are obvious because they leave clean patches!!

Also, the loud squeal that happens for 10 seconds on starting the engine is water pump related as well I believe?

Probably needs a rad flush while I'm at it, so this weekend will just be a coolant weekend!
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Old 11-09-17, 19:00
mindriot mindriot is offline
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Default Re: Coolant leak.. Any suggestions?

All of those potions are a waste of money for heads etc, rarely work on high compression tdi and can cause more harm than good. Could be knackered bearings on the pump if waters passed the seal, if youve matched the noise to the pump it would be wise to do asap as theres a risk of problems or even jamming if it is the bearing.

Probably best to change the aux belt etc if thats how its driven, dont know some of the T4 engines very well.
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Old 12-09-17, 07:25
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Airbornespud Airbornespud is offline
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Default Re: Coolant leak.. Any suggestions?

I had considered doing aux belt at the same time to be honest, so i'll take your advice on board.

i'll post pictures once its done next week. Thanks for your advice Mindriot!
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Old 12-09-17, 17:19
mindriot mindriot is offline
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Default Re: Coolant leak.. Any suggestions?

No worries, as always though trying to help on a forum is a view from afar, i might be wrong or it might me something less obvious, take it under advisement so to speak and good luck.
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Old 07-11-17, 18:31
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T4 Post Icon Re: Coolant leak.. Any suggestions?

Just changed the water pump and our problem has stopped!

Did a full rad flush and oil change while I was down there, and it's like I'm driving a different van!!

Cheers for any advice.

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Old 07-11-17, 19:15
mindriot mindriot is offline
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Default Re: Coolant leak.. Any suggestions?

Good stuff, well done.
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