1.9 TDi overheating since new turbo was installed

[Boom^]

Hi Guys,

Popped my turbo on my Ibiza Mk4 TDi. It went into the garage and had a new turbo fitted.
All was merry and she was back to normal strength. Then about a week later I gets an overheating alarm with oil temp rocketed sky high. Stopped car straight away. Let it cool and stuff. Before that I also noticed that the climate control seemed pretty unable to kick out any heat. Thankfully I'm in southern Spain so that hasnt been a huge issue. With outside temps not going any lower than 10C.

As I've been driving. I notice that the oil temp gets up to the normal level in usual time. But then later on I'll see it start creeping up past 90, towards a hundred. Stick there for a bit, then drop down to normal level again. If the cars on for a while, then it creeps higher and higher until the point where the alarm starts going and red light flashes on.

Opened the water bottle thing on the left hand side, and its steaming and boiling hot, loads of pressure and really not happy. I've been adding water in there as there obviously was no coolant left. (dont need to worry about it freezing here).
When I do add a load of water, then the car is happy as larry. Heater works, things are good. Until a few days later when the problems start coming back again.

Obviously it aint cooling down properly and the water is boiling, steaming and evaporating. Coolant is obviously the proper thing to use with it having a much higher boiling point. But ive been told this is a bigger problem and putting in the correct cooland wont fix it. As it should be cooled anyway.
Sorry im a bit of a newb on this.

Someone suggested that i leave the top off this bottle, start the car, put heaters on full blast and leave ticking over for a while which could remove some blockage. Anyone got any more info on that? Would this work? Trust me, its far simpler if i can get this fixed myself rather than having to take it back to the garage and start arguing with them, as obviously this problem started to occur after a change of turbo unit. As such dould be under their warranty. Its actually been over a month now since the turbo was changed due to going away for a week and not using the car for a while.

Any ideas / advice. Also what is the correct coolant for my car?

 

[JPS3290]

I think you mean Water temp? My Mk4 Cupra TDI only has a water temp gauge.

Anyway, sounds to me like you have an air blockage in the water system somewhere and most likely caused during the turbo exchange because both water and oil pipes go via the turbo so will have been removed & clamped. Oil would have been dropped and replaced but probably not the water.

You'll need to bleed the radiator which can be a pain on most cars. I always start the car up, leave heater fan on full with temp on max. Their are usually bleed screws (sorry, not done an Ibiza before so not sure where they are). Most cars will have one at the bottom of the radiator which you can bleed from to make sure warm water is passing through it successfully...which I would do since you say it's over heating...could be a problem with the Rad or on the route to it.

 

[darkhorse]

Air blockage around the thermostat or a failing thermostat would be my guess

 

[umdiecker]

After a similar refit of a turbo on my Cupra TDi, I found the character and noise of the new turbo quite different. The car still had the same "go" but I guess part of the failure of the turbo was changing the noise and the power delivery.

The Seat garage recommended that the car (or any other turbo'd car) should be left to run to cool down after driving. I found with the Ibiza this can take a while, so on the last mile home, I tend to turn up the heater to max and run it til I park, leave it on for another minute when parked, then finally turn off the engine. It seems to drop the temperature gauge really quickly.

 

[Boom^]

Nice one thanks for your help guys. Going to try the bleed radiator option. See if it helps matters. if not will be garage time!

 

[Martin_FR]

After a similar refit of a turbo on my Cupra TDi, I found the character and noise of the new turbo quite different. The car still had the same "go" but I guess part of the failure of the turbo was changing the noise and the power delivery.

Also, my remapped fr tdi's temp guage never goes above or below 90 once its up to temp.

The Seat garage recommended that the car (or any other turbo'd car) should be left to run to cool down after driving. I found with the Ibiza this can take a while, so on the last mile home, I tend to turn up the heater to max and run it til I park, leave it on for another minute when parked, then finally turn off the engine. It seems to drop the temperature gauge really quickly.

Its not necessarily to cool the engine down and putting your heaters on wont help with cooling your turbo. Its mainly to keep the flow of oil to yoir turbo, if you shut off the engine straight away your turbo may still be spinning at 1000's of rpm and when the engines off theres no oil pressure going to the turbo. Leave it idling for a few mins or near the end of your journey drive off boost. This lets the oil circulate to the turbo and coolant and lets it cool down

 

[mazzerati]

The guy who said take the reservoir top off and run it is right (reservoir is the highest point, there's no bleed screws) squeeze some pipes to the radiator, should sort it,

The fact its happening after sort of suggests to me you have s broken thermostat or water pump has failed you. Same symptoms mine had last month