Right have checked the coolant level over the weekend and topped up a little with a new expansion tank cap had its first run in this morning I am still confused......it was running fine then hit traffic and up went the needle! no heat inside again bottom hose on rad cold and one of the heater matrix hoses cold. By holding revs at 2.5 -3k it drops temp and heat is inside again! Turn the heater dial and diverter inside and this can affect heat coming back too
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