Discussion in 'Mk5 VW Jetta, Sportwagen, and Audi A3 TDI forum' started by mikeme, Oct 6, 2014.
This was flushed out of a heater core on a 2009 TDI Jetta in Houston.
any idea what this stuff is?
That is bizarre. Some tech did not like you for some reason and dumped something in your car?
Not my car. an internet friend with the same car I provided some heater performance comparison. (why he needs heat in Houston, I am not sure, but I guess if it is in the car it should work.) the coolant loop that feeds the heater also cools the EGR, I am pretty sure, so it is good to have it cleaned out even if one did not want heat.
Looks like sand. Doesn't look like rust but you can test it with a magnet.
mine on my 2009 jetta tdi sportwagen (cbea engine) had a very similar substance that I discovered thanks to "no heat." I'm about to do my timing belt change and heater core replacement, so I'm curious what else I'll find.
You may want to take some time and flush out the system with a water hose.
a couple adapters will let you push water through the three paths involved to get as much of the granular stuff out as you can.
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