thermostat m44 engine removal / symptoms

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Joined: Sat 18 Jun, 2016 11:35
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  Z3 roadster 1.9
Location: Blaenau Gwent South Wales...

thermostat m44 engine removal / symptoms

Post by handsomejackuk » Wed 05 Apr, 2017 17:56


bmw z3 1.9 air condition electric fan 1998

recently noted that my temp guage is a bit erratic and goes from middle of guage when in traffic, to cold when moving along and going down hill , and back up to the middle when under heavy load i.e. going uphill...

I beginning to suspect thermostat... looks like mine is plastic housing. and theres no viscous fan so easy to change would the above symptoms suggest a dodgy thermostat... ?


Joined: Sat 19 Nov, 2011 18:35
Posts: 2126

  Z3 roadster 1.9

Re: thermostat m44 engine removal / symptoms

Post by Del » Wed 05 Apr, 2017 20:41

Yep - the moving into the cold zone when the engine is not under load and you are travelling at a reasonable speed - is typical. Several things can cause an engine to overheat but for it to overly cool is typically the thermostat.

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