mm-rocco
Well-known member
Thanks for all the updates guys !!
Thanks for posting this link.This is frustrating indeed
Thanks for keeping this topic alive, i would be great if we can look back at this topic in some time.
To my opinion your heater matrix is not working as it supposed to do, i would replace the heater matrix. I found this document where is explained that you should flush the system properly. https://drive.google.com/file/d/0ByxgazxO4YLZV0hyTm1OVm1tNE0/view
In this document the EGR is mentioned. My engine is not mentioned in this document, aluminium rust, flux and the EGR do ring a bell......
NEXT
I thought the passages looked larger on the Nissens one also. The replacement ones that the dealerships are offering my be the same as the one they are replacing which may be a reason the problem is not fixed in those instances?the one i have just received is a Nissens, and it is a revision B, this is the latest version, and i believe the passageways are larger.. but i have yet to remove the existing core, but when i do i will measure, and cut the old one apart to have a look at the internals.. will be this weekend.
I will do, i am also going to do a volume measurement to see if there is a significant difference before i cut it open.. will let you know the result.I thought the passages looked larger on the Nissens one also. The replacement ones that the dealerships are offering my be the same as the one they are replacing which may be a reason the problem is not fixed in those instances?
Be interesting if you could try to blow through each matrix when you're replacing it this weekend. In my case there was significant resistance in the old core versus the brand new one.
I thought the passages looked larger on the Nissens one also. The replacement ones that the dealerships are offering my be the same as the one they are replacing which may be a reason the problem is not fixed in those instances?
Be interesting if you could try to blow through each matrix when you're replacing it this weekend. In my case there was significant resistance in the old core versus the brand new one.
total to get it out, and replace was about 1.5hrs, mainly because i had trouble getting the top pipe clamped up again properly.. the Nissen kit came with a clamp (like the one on the bottom pipe) not the clip that VW use.. i gave up and put the clip back on.. in the Matrix (radiator) the cores are approx 1.5mm wide internally by about 20mm so would be difficult, and expensive to clean.. cheaper to buy new.. the Nissen kit cost me $160 AUD (about 80 euro) delivered from the US to Australia..Roughly how long did it take to change it??
Curious.
Back in the old days a radiator shop could take the top tank off the radiator and run a tiny rod through the cores to clean them.
Guess this doesn't happen any more.
Throw away parts.
Good news...., I too took mine for a run, unfortunately 130/140 out of the question, legals 110 here. did a run without Regen that usually caused issue with or without Regen, and levels remained fine.. so far so good..Today my heater matrix was replaced at the dealership. I just had a long motorway drive doing 130/140 km/h, after the DPF-regen finished and the exhausttemp was down tot 250C i pulled over and checked the coolant. No blowout this time !!!!
I will keep you informed !
Actually the best way to test, would be to pull over during DPF regen, this will create the worst possible scenario, with limited airflow in the engine compartment, and reduced coolant flow because of low engine RPM, and the auxiliary pumps to do most of the coolant circulation.Today my heater matrix was replaced at the dealership. I just had a long motorway drive doing 130/140 km/h, after the DPF-regen finished and the exhausttemp was down tot 250C i pulled over and checked the coolant. No blowout this time !!!!
I will keep you informed !
Hi MM-Rocco, i agree people have spent a lot of money to not fix this issue..My car was in for problem-solving this week at the dealership, we agreed he would run Tpi 2040004/9 "Prüfplan zum Kühlmittelverlust beim EA288 Dieselmotor". After a few hours i received a phonecall from the dealership that the computer diagnosed the EGR and the head and not the heater matrix !!! I asked the dealership to replace heater matrix and leave the EGR and head for the moment.
If the heater matrix is really the faulty part causing the coolant blow out loads of people must have spent fortunes on parts and labour.
So far so good, first DPF-regen was fine. See what happens next week !
I have a Leon and had this issue. As the golf, A3, Leon etc are based on the MQB platform, it's a VAG issue not specific to the golf. The issue may appear to be more prevalent in golfs because there are more of them.I am wondering about one thing, looking into this matter i do not seem to find any other VAG cars with similar issue, or am I wrong? What does golf have that A3 or rapid or leon dont?
Good to know. I'll do the procedure later this month and will come back with results. (2 years of struggle here)Since the replacement of the heater matrix i drove 752 KM, I had three DPF-REGEN's and even pulled over in the middle of a DPF-REGEN. No blowout's and no loss of coolant !
How are you all doing ???
Have just had my heater matrix replaced but nothing to report as yet as I've just been going on short journeys..
Ill have a decent run (200 mile round trip with motorway speed) this weekend and hopefully nothing will happen.
Will update later
I will take your adviceDo not panic when the coolant-level drops a bit, this seems to be normal. I had this the first day and started to feel sick again The car only needed 200ml. Today i put another 200km on, still good !
@mm-rocco i second this, as my coolant did drop a small amount on the second run i did, (about 100ml) but nothing since, done about 750K's now and have not had an issue since the matrix replacement..Do not panic when the coolant-level drops a bit, this seems to be normal. I had this the first day and started to feel sick again The car only needed 200ml. Today i put another 200km on, still good !
I’m glad that the problem is now probably fixed for you man. Can you tell me how much you have paid to replace the heater matrix? And at which dealer? I don’t trust mine anymore..Do not panic when the coolant-level drops a bit, this seems to be normal. I had this the first day and started to feel sick again The car only needed 200ml. Today i put another 200km on, still good !
i’m glad that the problem is now probably fixed for you man. Can you tell me how much you have paid to replace the heater matrix? And at which dealer? I don’t trust mine anymore..