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Discussion Starter · #1 ·
I wondering if anyone can help me with my coolant issue..

.i've got a mk4 golf gttdi 115 60000k, since i had me timing belt and tensioner changed (12 months ago) it has been leakin coolant at a variable rate..sometimes can go ages and other times no time at all before needing filled, its been checked for hoses, radiator fans/switches... a new header tank.....its been in numerous times and the last time he had it right back to the waterpump. which he is positive is fine, infact i said to him he might aswell change while he was there an he said it doesn't need it! he had it stripped out and running and it didn't leak any for the two days in there.???!! i know its not the matrix as there is no wet patches inside...

i asked him if a new head gasket would do the trick an he said 'to be honest i dont know'!!!

i really dont want to get rid of her like!!! so any advise would be greatly appriciated!!! An Mister E, are u still havin the same trouble???

outofideas vez....
 

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Discussion Starter · #3 ·
Cheers for the come back neil,

yeah i saw the link, i thought andy had only had his waterpump changed? An for 347 thats hefty....so it was a new head gasket for that price then?

I havent ever noticed the temp goin above 90 like, or had any white smoke from the arse end .....but i think i will have to change the head gasket an see where that takes me....

tar for ur help

vez
 

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mmm, all this sounds depressingly familiar. There seems to be a few things that make mk4's lose coolant by the sounds of what everyone else is saying. I can only speak from my own experience, so hope this might help you.

I've got the same engine (115k miles though) as you and I've been losing a LOT of coolant. It's been worst when travelling at speed - driving slow (under 50mph) I could go 200+ miles without losing much but at motorway speeds the expansion tank could be empty after 20 miles!

It's been into 3 garages. 1st two weren't any help - looked at several things but couldn't find anything. Then the next place replaced the standard plastic water pump impellor with a metal one thinking this would work. It didn't.

So it went back to this garage who decided to pressure test the cylinder head. Turns out there was a crack in the head. It's been welded up now (might not be the ideal fix, but we'll see). I've just had it back yesterday so we'll see if that's fixed it. I need to run it at speed to see if I get the warning light come on but I'll let you know if it seems to be working properly
 

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Discussion Starter · #5 ·
well lambo cheers for the info, i hope that the weldin holds out for you...let us know how u get on...

i cant say for sure whether its the same for me as the drivin i do is mixed, ie short an long journey at varied speeds. but it does seem the same about the different ammount of coolant we get through...sometimes i'll not have to top it up for a week and other times after a 40 mile trip...

one question, is it a ball ache for the garage to do a pressure test on the head? the guy who deals with mine said he had carried out numerous pressure tests and there had been no leak. but would this be a pressure test carried out on the cylinder head? i might be askin a stupid question but i dont know!!!

cheers again for the help an i hope ur's holds out for ya...
 

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If your head gasket is gone (and I am sorry but I have seen a few of the 115PD Golfs with this) then the water will be going in to your oil and the oil in to your water.

There is a quick easy check that can be done by a garage where they suck up some coolant and it does a check for oil present in the water.

Hope it works out ok for you mate , but be aware that if it has gone and you carry on driving it , it will make things worse for you :(

Sorry

Sarah
 

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I have the same problem 0n
my ajm gt tdi 115. tank goes below minimum after about 80 miles. had the water pump and cam belt changed hoping this would solve it, but alas no. thevwater appears to be coming out of the expansion tank in my case though. I'm going to try changing the thermostat, if that doesn't do it, then its goin to vw as it still has an extended warranty.
jamie
 

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Hi mate

Yours could be a little simpler that the thermostat.

There is a seal on you cap.

That can go after an amount of time.

So it could be worth just investing in a cap.

Not that expensive and I believe that GSF do them.

Tis worth a try before you go to the expense of a thermostat.

Cos the system is pressurised the water gets out before it is needed to out of the cap.

Sarah
 

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one question, is it a ball ache for the garage to do a pressure test on the head? the guy who deals with mine said he had carried out numerous pressure tests and there had been no leak. but would this be a pressure test carried out on the cylinder head? i might be askin a stupid question but i dont know!!!
Yes, I think it is quite a ball ache from what I've heard I'm afraid. The garage that had mine in couldn't do it themselves so they had to send it off to someone who had more sensitve equipment. It was only a tiny crack in the head and they said they were lucky to find it by the pressure test. I still don't know if that was the actual cause of my leak, but I'll get it out on the m-way at the weekend and see if it's holding up. I'll let you know the outcome. Fingers crossed!
 

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Discussion Starter · #10 ·
Hi sarah,

so there are a few cases like mine, as ive been trawlin the tinternet while im workin away to find similar cases an ive not found much info, so all this is great. i understand that i maybe causin myself grief later but the car doesn't really get driven when im not home so its not doin too many miles which is one thing.

i will fone me garage the morra an ask if they carried out such a test, the guy i go to is good but its not a proper dealership an im not even sure if he has a vagcom! so with this in mind it maybe time i took it into somewhere where they could carry out these tests...

thanks for your info an help

vez
 

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Discussion Starter · #11 ·
jamie

thats gd that u still have the extended warranty like..bit for forward thinkin there..! so new waterpump didn't sort it, an what u mean by the leak appears to be coming out of the expansion tank..ie external leak oppose to an internal as mine seems to be? well i hope that sarah is right about the seal....knoweldgeable lass that one....its deffinately worth giving it a shot anyroad.

cheers again
 

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jamie

thats gd that u still have the extended warranty like..bit for forward thinkin there..! so new waterpump didn't sort it, an what u mean by the leak appears to be coming out of the expansion tank..ie external leak oppose to an internal as mine seems to be? well i hope that sarah is right about the seal....knoweldgeable lass that one....its deffinately worth giving it a shot anyroad.

cheers again
yeah, i only bought the car 2 weeks ago, and already problems :( i bought it privatley but the guy had bought an extended warranty out on it from an external company which is being transferred over to me. he told me it had been losing coolant and that he had a new radiator fitted under warranty and that it had been fine since then, however this is not the case. when i got in from work one evening the check coolant light came on, and when i opened the bonnet there was brown (almost rusty coloured) water all under the expansion tank. when i removed the tank i found that it had been coming out of the over flow, so either dodgy cap seal, as sarah has said, or maybe the dreaded hg failure. either way it will be sorted, fingers crossed[:|]
 

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Hi Mate

Where I worked before we did 4 of the PD115`s head gaskets.

No other diesels had this issue.

So I dont think it is common , more what I would say familiar?

Just get it checked as a matter of course as I know there has been more than your post on here in regards them.

Fingers crossed that I am wrong though.

Good luck

Sarah
 

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Discussion Starter · #14 ·
Hi Sarah

well at least i know now, i have a feelin that ur right....

so did u use to work in a vw garage i take it? an what was the average cost vw were chargin for such repairs, if you know?......

i think my guy said it would be around 3-4 hundred...but maybe im better gettin it done at the local vw garage? what u think......

cheers for ur time an help

vez
 

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Hi Mate

I worked at a Skoda dealer for 5 and a half years.

Then went on to a specialist for a year and a half then just moved here.

It was while I worked for the specialist that I have seen 4 in the space of a year and a half.

Out of the 4 , 3 needed turbos replacing shortly after.

I have seen quite a few posts on here in regards the head gaskets and quite a large thread was started in regards this.

I will have a look through my history on here to see if I can find it.

With the head gasket replacement you will need to have the head skimmed and checked.

Then there is the oil , oil filter and all the coolant replaced.

The gaskets , would need to be added too.

Head sets usually work out cheaper.

This means 3 - 400 quid is rather cheap.

You would need to check that they will do that for you.

Then after a couple of weeks just keep an eye on the turbo.

Sorry mate.

Will look in to my history to see if I can find the thread for you

Sarah
 

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Sarah, As the owner of a PD115 I,ve been following this post with interest. My car is on 66k and had the usual cambelt/tensioner/water pump at 60k - it is running fine but I,m starting to wonder whether the 115 is a bad engine after reading all the tales of disaster on this forum.

I would like to know whether anyone knows what is the cause of the head gasket problems on the PD115 and whether it happens to all cars after a certain age/mileage. I know that cooling system and water pump problem are common on the Mk4 and obviously if these are not fixed then head gasket problems will follow - it is possible that some failures may be due to owners not dealing with problems until it is too late but I wonder whether there is a design fault which makes the 115 particularly prone to head gasket failure (quite possible considering the other common VW design faults such as window problems, rear axle bushes, corroding brake pipe seals etc).

Does anyone know the fundamental cause of the problem and whether anything can be done to prevent it?
 

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Discussion Starter · #18 ·
hi sarah,

well again thanks for this valuable info, u never get a straight answer at the garage! i will check if my local guy could carry out the work to the required standard....

and this about the turbo...thats strange, but again great to know.

cheers for the thread, it sounds like we are in the same boat, so he got quoted 460, i wouldn't mind paying that if i knew for sure that it'll fix it....but then the turbo after...ouch!

although there are a few people with this problem i dont feel this car is a inherently flawed, the 115 is a sound engine....just the luck of the draw i suppose!

thanks again for all your help sarah

vez
 

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Well mine appears to be sorted (I'm reaching out to touch a very large piece of wood - or MDF at least).

Just had it out for a 100 mile round trip up the m40 and it seems to be holding out. Even at high speed where it used to lose a shed load of coolant very quickly, it hasn't lost a drop.

So in my case at least, it was a crack in the cylinder head. It's been welded up now, so hopefully it should hold out for the foreseeable future. I hope I haven't got to worry about the turbo going now though after reading Sarah's posts! That wouldn't be fun.

Hope you get your coolant loss sorted Vez. And I hope for your sake it's not going to cost you too much. Luckily mine was under warranty but I wouldn't like to fork out myself for the repairs. It may well be worth you trying to get a pressure test on the cylinder head - it may be something completely different, but then again you might find the problem. Good luck to ya all the same pal
 

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Discussion Starter · #20 ·
hey lambo,

well thats all good about your weld holding out, at least if its been done under warranty, the repars will be covered too?...

yeah im not sure what to do with mine but i really dont want to get rid of her, so i think i will try the oil in coolant test and take it fm there. hopefully it wont be the case that i need to spend a fortune on it ...but i will keep the forum posted...

cheers an fingers crossed!!!

vez
 
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