S Beck Posted May 14, 2009 Share Posted May 14, 2009 Been getting a bit of overheating as engine warms up when heater on full blast. Found water level a bit low, topped up and now OK. Now notice that driving with heater OFF engine runs about 10 -15 deg COOLER than with heater ON. Anyone else had anything similar? Blue SV06 CAT Link to comment Share on other sites More sharing options...
jackb_ms Posted May 14, 2009 Share Posted May 14, 2009 The heater is an other device which dissipate heat, which could explain why you see the change in temperature. Also the temp gauge are not that accurate. Or you might have an air lock! Jack Emily, The Very Yellow 21 Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted May 15, 2009 Share Posted May 15, 2009 Airlock trapped in heater, perhaps not allowing water to circulate when the heater valve is turned 'on' Link to comment Share on other sites More sharing options...
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