Question about 2000 BMW 3 Series

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Bmw 318i e46 overheating. took head off an had pressure tested. fitted new thermostat an water pump.Temp gauge stays in the middle. After 4 mile top hose very hot and bottom cold, I took the thermostat out and it runs for about 10 mile before overheating at the top hose and at this stage the bottom hose is a little warmer. the car only has 51 thousand on the engine as I have it from new I know this is correct. i also notice the fan does not come on

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  • Mark Barratt May 11, 2010

    it may be that the radiator is partialy blocked or has an air-lock, does the radiator feel hot all over the core when over heating? / is all the air out of the system? bleed screw next to filler on rad

  • Anonymous Apr 01, 2014

    when the car over heats the top radiator hose is hot and the bottom one is still cold . I changed the thermostat bu didnt help it appears that the colant is getting thru the engine is there any other sensors that wud be causing this ?

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  • Master
  • 518 Answers

The fan is the problem, try replacing the temperature sensor that the fan connects too

Posted on Feb 08, 2010

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