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D2 - Engine Bay Everything under the bonnet

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  #1  
Old 25th June 2023, 08:27 PM
Ronin Ronin is offline
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Default Heating system flush

It was worth it, i highly reccomend







I also replaced the heating valve block/motor
If someone plans on doing this, it took me about 9h start to finish with no breaks.

Result = I now have a car with working heat and AC
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Old 30th June 2023, 05:59 PM
strummagnet strummagnet is offline
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Did you follow the manual? Any tips / handy hints along the way?
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Audi S8 2002 FE Avus Silver / Extended Red Leather.
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Old 1st July 2023, 10:52 PM
Ronin Ronin is offline
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One tip I can give is to start flushing with a very low pressure and wait for water to start coming out the other end, once it starts coming out then you can safely increase it.

Also you will find quite a few corroded connectors in the ECU box so have contact cleaner ready.
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Old 2nd July 2023, 08:17 PM
Ronin Ronin is offline
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Also this diagram is useful:



I flushed each heater core in 2 directions as well.
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