I have a golf MK3 2L convertable when i dive it and the heating gage on the clock goes half way the engin shuts down for about half an hour. i have been told to change the koil and the feulpomp relay i have but broblem not solved, i have realise that the radeator fan does not come on that is the next thing am about to change. please help me if you have the answer to my problem thanks. bruce
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CarGurusAug 20, 2014 - Also as my temperature gage rises but car does not overheat. ... tempneedle gets up towards the red mark while you're driving, then yes, ... i have a 2006Pontiac Grand prix and my temp. goes up to the ... crzgrl637 answered 6 months ago ...the cooling fans won't kick on then you will see gauge over heat.
When you say heats up do you mean between the cold and hot in the middle which is normal operating range or are you over heating and the temp safety system is doing what it is designed to do and shutting your engine down so you don't damage your engine. Check you water pump, Thermostat and radiator before you try pulling or bypassing that switch or you could ruin your vehicle beyond repair.
Have you replaced the original water pump that has a plastic impeller? This can crack where it is connected to the shaft for the pulley. When it does it will spin slower or not spin at all at higher engine speeds although it might seem fine during idle. When you do this repair I suggest to do the timing belt service too. Water pump repair calls for timing belt removal to access the water pump bolts. It's best to consider timing belt repair work so you won't have to do it later on.
if you have a 2.0 you check your water pump.. they have plastic impellors on the water pump and frequently break, I have seen many that wont heat up too much while idling with a/c off but will overheat going down the road, the problem is that where the impellor connects to the waterpump shaft cracks and works somewhat until you accelerate the engine, which causes more pressure and will make the impellor to start slipping.