edyvw
$50 site donor 2026
Originally Posted by Delta
Originally Posted by edyvw
In addition, rarely these water pumps suddenly fail. It starts with slow loss of coolant and coolant smell is present in engine compartment.
Funny you mention that (well not really in my case...). I've noticed the same thing with my GTI. During the summer I added a little bit of coolant to it and thought nothing of it. Recently started dropping again, so I figure it's time to take it in. I can get a faint whiff of coolant, not in the front center where the pump is, but on the timing chain side oddly enough. Still under powertrain warranty for a couple years, so I'm not fretting. Still should not be happening on a less than 3 year old car with less than 20K.
IDK why VW is pushing so hard plastic housing on water pump. All updates they did on water pump were attempts to reinforce plastic housing and shield it from heat. They could just get over it by making pump from different material, but it might be that there is some reason for it. However, GRAF water pumps so far did not show any unintended consequences of having completely aluminum housing.
Originally Posted by edyvw
In addition, rarely these water pumps suddenly fail. It starts with slow loss of coolant and coolant smell is present in engine compartment.
Funny you mention that (well not really in my case...). I've noticed the same thing with my GTI. During the summer I added a little bit of coolant to it and thought nothing of it. Recently started dropping again, so I figure it's time to take it in. I can get a faint whiff of coolant, not in the front center where the pump is, but on the timing chain side oddly enough. Still under powertrain warranty for a couple years, so I'm not fretting. Still should not be happening on a less than 3 year old car with less than 20K.
IDK why VW is pushing so hard plastic housing on water pump. All updates they did on water pump were attempts to reinforce plastic housing and shield it from heat. They could just get over it by making pump from different material, but it might be that there is some reason for it. However, GRAF water pumps so far did not show any unintended consequences of having completely aluminum housing.
