2001 Audi A4 V6 Heater Core Flush

2001 Audi A4 V6 Heater Core Flush

My 2001 Audi A4 had no heat due to a plugged heater core. It is way too expensive to replace the heater core in this car. See how I flushed out the heater co…

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Dean Sahr says:

Did not try to capture the dirt. The heavy stuff stayed on the bottom of
the bucket. The rest was broken down by the chemicals.

Dean Sahr says:

The black tubing is 7/8 ID. It was the only 7/8 I could find at Home Depot.
I wanted the rest to be clear so that I could see what was flushing
through. Every 15 to 20 minutes a big cloud of brown could be seen flushing
through the clear tubing.

Grant meyer says:

kool going to try on my s10 thanks. great idea!

Dean Sahr says:

Its been 1 week now and the heat is going strong, which is good because it
is 12 degrees outside. My daughter, who is the driver of the car has not
complained………which is unusual in itself. Next up is a total tone up.


Charles Oh says:

Hi, do you mind sharing what size hoses you used to make the connections?
Were they 3/4 inch ID? You are also using black tubing instead of all
clear so wanted to understand why you transition to a different size. How
are you capturing the stuff that is coming out of the heater core in the
bucket? Thanks.

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