Heater hot then cold
Hi all.
I have recently had a lot of fun with my cooling system in a 1.8t I’ve bled the system and had the heater working! In my way to work this morning it was warm. Even though set to ‘Hi’ although the matrix pipes were red hot.. It then went cold after ten miles and the top matrix pipe was noticeably cooler than the bottom one. Any ideas really appreciated. |
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Here's my tip. To deter scale formation in the matrix, use de-ionised/distilled water for your coolant mix. It's available from a good motor factor for a few pounds and is well worth it! Simon |
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Journey and it sat at a steady 87-90 all the way! |
Well that's something! The focus is back on the heater matrix then.
If you used plain water for flushing you could try a solvent solution. The late MG John had success with Holts Speedflush by leaving it in the system for a few days whilst he drove around. Or you could use a descaling product provided that it's safe on aluminium. Simon |
Brilliant
Thanks for this information I will try this. 👍
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