Proton Impian not warming up

Car: Proton Impian
Variant: 1.6 Campro manual
Model Year: 2008
Categories: Running Rough, Starting & Power Loss
I have put a new thermostat in the car as it wasn't heating up properly but since the new thermostat has been fitted the car warms up when idling but start to drive it and the temperature guage goes down to cold again
Posted: Apr 4, 2013 (11 years ago)
Recheck coolant level and bleed heater if needed .Check hoses going to heater are both warm .
Posted Apr 5, 2013 (11 years ago)
Does sound like air in the system as previously suggested or a blockage.
Posted Apr 5, 2013 (11 years ago)

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