GOLF 1.4 2003 Model when the car start running upm to 2 munits the heatgage climbing over the middel then its come after a while it never makes like that i did replace the thermostat and also the fan switch but still doing the same thing what can i do futher

I would start the engine, open the hood and watch the engine and fan. Also, keep checking the gauge. If the gauge is rising over half way, the fan should spin and cool it and switch off again. We know the new switch is good. A bad fuse, relay, low water level or burnt out motor may also prevent fan from running. If the fan is spinning, that's not the problem. Are you losing water/coolant? When it's running, do the hoses swell up and look like they're going to explode? If so, you probably have a blown head gasket...that will cause it to lose water and overheat. The water pump could also be at fault. I hope this helps you. I'm interested to know what happens. Good luck