325_driver 422 Report post Posted March 26, 2010 Having a few problems with the daily driver at the moment. Waterpump has been replaced Took the car for a drive, and the temperature gauge spiked, but the system may not have been properly bled. But it is doing some thing odd at idle, when its at temperature, the fan will turn on/off on/off on/off, and it wont make up its mind. Could this hint a faulty Thermostat? What about temperature sensors could this create symptoms like above? Any help would be great, cheers guys Quote Share this post Link to post Share on other sites
hotwire 352 Report post Posted March 26, 2010 Are you absolutely sure it is bled properly? Sounds as if it may still have an airlock. Doesn't sound like thermostat to me - this would be a constant "hot" Quote Share this post Link to post Share on other sites
pureboiracer 0 Report post Posted March 26, 2010 e30 m20? fan turning on and off? have you replaced the viscous fan with an electric one? does your vehicle have aircon? Quote Share this post Link to post Share on other sites
