Help - Coolant pressure problems!

muzzaibizacupra

Guest
I have and ibiza FR 1.9 tdi (130)

I had it re-mapped about 6 months ago, now running 180-190 bhp and 300 lb/ft torque. I have recently being experiencing problems in coolant pressure, maybe air flow problems?

Can i get a front mount intercooler to fit straight on? Would this help?

Any comments would be appreciated

Cheers
 

mymorph

Full Member
Feb 21, 2005
417
0
wolves
from what i understand you can get one from forge, or use the seat cupra one - with a little alteration to the front bumper i think.
not sure itll help the problem. how do you know its a coolant pressure problem?

r the hose clips poping off by any chance?
 

robepton

Practical performance!!!!
Dec 27, 2008
110
0
peterborough
Welcome to the forum..

Don't think your remap will have anything to do with the coolant problems. More likely to be the thermostate which I'm sure I've read that a quite a few people have replaced. Quite cheap I believe. I'm sure somebody with more experience will point ya in the right direction.

You can a FMIC from forgemotorsport that comes with all the hoses and instructions. Nice bit of kit. Don't see how this would solve ya problems though.
 

kriso

_______ C U P R A _______
Jan 29, 2007
2,325
4
Brighton
It doesn't sound like anything to do with intake temps so its not really worth spending hundreds on a FMIC to try and fix it. Are you losing coolant out the reservoir or having leaks around the radiator?
 

muzzaibizacupra

Guest
it's bad :-(

had stat replaced twice! After over about 100mph the problem re-occurs, as i found after havin a bit of fun against a subaru! Coolant come out the cap of the expansion tank and the pressure release! Causing lots of steam and a slow drive home! Thought the oil might be boiling up and heating the coolant up, thus creating enough pressure to blow coolant through cap? Surely an intercooler would cool engine sufficiantly? Or would an oil cooler be more suitable?
 

muzzaibizacupra

Guest
had 2 garages baffled too! One a well known motorsport garage lol. Don't really want to take it to seat as i don't trust them as far i could throw them :-D
 

kriso

_______ C U P R A _______
Jan 29, 2007
2,325
4
Brighton
An intercooler cools the charge air coming out of the turbo, not the engine. Even tho the cooler air makes it into the cylinders, it won't cool the engine and the combustion temps more than make up for that anyway (even in a derv)!

Check the fan is operating correctly and that you don't have anything blocking the air flow to the radiator. Do you have the correct additive (G12) in the coolant too? If the ratio of water to additive is incorrect, the boiling point won't be high enough...if you've topped up with water than I guess it could be wrong. A VAG garage can check this, or you can just empty and re-fill the system.

Check the correct grade of oil is being used too and topped up.

Could also be water pump related. The plastic impellers can fail and should be replaced (optionally with a metal impeller-ed one) when the cam belt is done at 4 years or 40k miles.
 

muzzaibizacupra

Guest
cheers man that could be helpful. Is there anythin short of liquid nitrogen that could bring the boiling point mega low so i don't get this problem again?
 

Nath.

The Gentlemans Express
Jan 1, 2006
8,620
16
EASTLEIGH, HAMPSHIRE
Dodgy water pump? radiator blockage? blown head gasget allowing cylinder compression to leak into the coolant system and pressurise it?

You need to find out if it is boiling over through the pump not pumping the water to the radiator to be cooled properly................... or if the coolant system temp is ok and the pressure is building up too much an blowing coolant out of the weakest place.
 

tom167

bucksvag.net
Mar 27, 2006
201
0
Milton Keynes
I agree with Nath.

Think the first step should be pressure test, followed by checking the water pump, then compression test or the likes to check the head gasket
 

robepton

Practical performance!!!!
Dec 27, 2008
110
0
peterborough
There is a product called water wetter that is suppose to make ya coolant more effective but that's only going to hide the underlying problem.

You might find this is one of those times when it does pay just to take it to the dealer and get it sorted.
 

muzzaibizacupra

Guest
replaced the cap and had every test possible done to it includin head gasket test, also had full heating/coolant system re-piped, maybe a bigger alloy rad could help? This was the suggestion of one garage, i'm not sure about the water pump test though, i'll ask them if they did it but the garage is pretty good so i can't see them overlooking it.

though
 
Oct 17, 2006
2,141
0
Mid Wales
The problem is not going to be directly related to the map - there are loads of people running mapped PD130's and I have never heard of this problem before.

Looking at expensive options like large IC's or radiators will just be throwing money away. You need to find out what is causing the car to overheat - it's almost certainly going to be a problem in the cooling system - either a blockage, a pump related issue or an issue with the electric fan as suggested above. Frankly, it's concerning that your garage are unable to get to the bottom of this - the cooling system isn't exactly complicated and suggesting uprated rads etc quite frankly sounds like clutching at straws.
 

perikolos

Guest
also a bigger radiator will make life worst in winter times.... (had something like this with one of my old cars). You should try those products for radiator flush (put that in the coolant run the engine for 10 or so minutes until it gets to about 90 deg.) and then empty the system. you will be amazed of what will come out....
 

muzzaibizacupra

Guest
you might be hitting the nail on the head with the water pump thing, if the coolant isn't getting around properly this would cause my exact problem, i also have oil in my intercooler pipes, don't think this has anythin to do with the cooling problem but might look like my turbo is on the way out! It's only done 30k miles, been well looked after, cars eh! Lol
 

perikolos

Guest
oil in the intercooler pipes is ok, as long as it dosen`t have like 1 liter of oil is ok.
 

muzzaibizacupra

Guest
yea, it's from engine breather, just didn't know if it was bad or not. Cheers for all your help, i'm gonna ring the garage tomorrow see if they can check the water pump, would it be that it's not pumping the water through east enough?
 
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