We have had our 2008 for a year and a half. It is a Komfort with 6spd manual and 2.0T. Bought it with 42k on it, currently has about 80k. Problems we have had so far are intake manifold, fuel injector cleaning, and waterpump. Overall we have been really happy with the car.
So it turned out to be the water pump. According to the service manager, they've had plenty of TSI engines come through with the same problem and he wasn't surprised about my issue. The repair was covered under the powertrain warranty. I'm happy to have my Tig back.
Irregardless of what route you go, just make sure your water pump has a metal impeller and not a plastic one. The plastic one (factory on many VW) chips off and degrades over time causing all kinds of cooling issues.
Turned out to be the water pump
If your water pump is shot or going you will notice that your car is going to run hotter than ever. If you continuously see that you are overheating this could be the result of a bad water pump. I had to replace my water pump @ 25K when the original pump was removed the plastic impeller inside came out in about 4 pieces. It was completly fubar..
I have a MK6 and a MK7 and they both suffer the same crappy design. Making a water pump primarily out of plastic is just a bad idea. My MK6 is on at least it's third water pump at a little over 100k miles.
metal impellers definetely can eff up your setup. I had one on my 2.0 jetta. and it completely froze, and caused me to overheat, which killed my headgasket. The engine never fully recovered from that.
I was sitting at an In-n-Out drive-in when the low coolant warning dinged. Drove it the 2 mi home while keeping an eye on temps and popped the hood. The overflow tank was 75% empty and there was an apparent leak. By the end of the hour, it was completely dry. Got it towed to the local dealership and it took a day to diagnose and another day to get my car back. I'm grateful it didn't blow during my little road trip.
155k miles - water pump leaking again, gaskets in inlet/outlet pipes need new gaskets, put on aftermarket aluminum water pump in hopes to prevent future leaks.
This was a Hepu pump. With far less than 60k miles. I'm thinking the coolant had gotten too old. Can't figure why else the pump would wear so fast. Noise statrted after coolant change, am running an AC delete setup.
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