Dear All,

Got a very strange problem with the heating. So heating doesn’t work in cabin, until the engine is under stress. So on the recently cold days there is a very very little warm air coming through, read practically cold. I noticed it’s taking 20 mins for the gauge to register a temperature then pings up to halfway. If I cain the engine, bingo I got hot air, then as I sit in traffic it blows cold air. There are no bubbles in expansion tank or any oil. Any help would be greatly appreciated!

Max

Blocked heater matrix or water pump on it's way out