1994 2 litre sport
car takes a while to get up to normal temp and stays there whilst the car is being driven.However when at a standstill or in traffic the temp shoots straight up. When the car gets going again the temp drops back down to normal. Checked the fan and its its workingwhen at standstill.
any ideas?
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Could be an airlock in the cooling system possibly.
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Any advice on how to locate, or steps I need to take?
{Shouting amended - DD}
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With the engine cold (for safety and to ensure the thermostats closed) remove the cap from the expansion tank and start the engine.
Then with the engine running squeeze the hoses a few times, some people would tell you which ones to squeeze, but I prefer to do all of them a couple of times just to make sure.
Then wait until the engine has heated up sufficiently for the thermostat to open and repeat.
Also some cars have bleed valves on the top of the radiator and on the top hose, this can make it easier.
Also remember that you may need to top up the water afterwards.
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Does the temperature just shoot up a bit and then the fan cools it down, or does it shoot up into the red section of the temperature gauge and keep getting higher and higher?
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It stays at half whilst driving.then when i stop in traffic it goes up to just below the red. I havent let it go into the red mark yet. then when i start driving it works its way back down to half. Also can anyone guide me to where the thermostat is located
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i let it start to overheat outside mine at standstill and opened bonnet. when the temp was above the normal mark, the fan was spinning
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the fan may be spinning but is it drawing any air thro the rad?If I recall these early 2.OL engines use a viscous coupling fan that "locks up" when engine temp rquires it to pull more air thro rad.If it is working correctly you should hear the fan note change to a "roar" if the engine speed is increased from idle.
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I agree with elekie&a/c doctor, all Vauxhalls of this age that I've driven have this. My current '96 Vauxhall doesn't reach the "roar" until the needle gets well into the red, at which point it get brought back down to the centre of the gauge in a matter of minutes. You should definitely be able to hear it, from inside or out, when the fan steps up a notch.
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Actually my mum did have an astra that shes just sold. The temperature on that would shoot up then the fan would cut in and bring it back down all the time. Apparently its how they were made or something....
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