Is your heat not working or is your heater not hot.
Audi tt heater core flush.
Turn on the water flow not too hard as the heater core is a bitch to replace and watch the gunk come out.
Now is probably a good time to drain flush and bleed your whole cooling system.
Reverse the hose and forward flush again making sure the water coming out is clear.
Flushing the heater core isn t completely unlike flushing your cooling system during a coolant change except that it focuses exclusively on the heater core itself.
You may have a clogged heater core so do a heater core flush and unclog it.
Learn how to flush your heate.
You can use regular water from a garden hose with the caveat that you shouldn t subject the core to a great amount of water pressure as this can damage it.
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