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29/06/2022 2:56 pm
Topic starter
Sorry, I know you hate Mercedes BUT I have an ex taxi I use for learning about engines and running errands. It's a 2009 Mercedes w212 2l diesel. The a/c only seems to blow cold air when idling or driving really slowly. When I get up to motorway speed it blows warm, like outside temperature. I had it re-gassed the other day but it didn't fix the problem. I know you will know what's wrong, Scotty!
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29/06/2022 10:24 pm
Shooting in the dark here. Have you checked your coolant level ? sounds like the engine is getting extra hot when running at high-revs. Could also imply something is off with the radiator fan/fan control module.
