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VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old February 13th, 2019, 19:38   #16
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Join Date: Apr 2013
Location: Lewisville, Texas
Fuel Economy: 40 Mpg

Sounds like the water pump is bad to me. I would definitely try and spin the impeller.
2001 Silver Jetta Sedan TDI 5 Speed,3" Kerma turbo back straight pipe
Allard EGR Delete
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Old February 17th, 2019, 09:45   #17
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Location: Lompoc, CA

I was thinking the impeller also as was mentioned a few times above but never responded to.

I wouldn't worry about the coolant IF the system was flushed to remove the original stuff. I can't believe there's a coolant made that isn't good for aluminum/iron systems.
Saying no to gas for 25 years:

Current: ’02 Jetta, Auto; ’98 Jetta, 5 Spd; ’98 Dodge, 5 Spd, SB, 4x4; ’84 Grand Wagoneer with Nissan SD33T, NV4500, Dana 300, Reverse Cut Dana 44, Dana 60

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Old February 17th, 2019, 14:21   #18
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It’s nearly impossible to diagnose your problem in a forum. Assuming the cooling system/heat was working properly before you took it in for the timing belt replacement???? Take the car back to them and tell them it worked fine before they worked on it and you want it fixed properly. If they balk, just call credit card company and cancel their payment. Take car to reputable VW TDI shop.
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