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Heater issues 03 a4 1.8

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Old 01-06-2018, 10:35 AM
1st Gear
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Join Date: Jul 2015
Posts: 57
Default Heater issues 03 a4 1.8

A few months ago a coolant line burst on my A4 1.8. replaced it, the turbo coolant hose and thermostat. Also did a timing belt water pump change while I was at it. After all was said and done the heater wasn't working. So I flushed it out and it worked fine for about two weeks. I flushed it again and same thing. it blew real hot for a while and then it gradually, over the course of a couple weeks, began to cool off. To the point that now it only warms up a little while accelerating. At idle it's ice cold. Do I just keep flushing it or is there some coolant system mystery that I am unaware of? Thanks
 
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