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Re: Temp sensor position

To: "Barrie Robinson" <>, <>,
Subject: Re: Temp sensor position
From: "Paul Hunt" <>
Date: Sat, 30 Dec 2006 09:55:48 -0000
The factory V8 does indeed have the temp gauge and fan sensors in the inlet 
manifold.  However the cooling fans (on all MGBs) are overridden by the 
ignition, and so are not running when the ignition is off.  This does give 
rise to 'heat soak' and an increase in temp gauge reading until the whole 
thing cools down, but that isn't a problem.  I'd rather have that than the 
fans running when unattended, possibly long duration hence flattening the 
battery.  In recent years there have been cases of modern cars wired that 
way catching fire because the fan seized but was still powered, and with one 
of them being parked in a garage at the time it burnt the owners house down!


----- Original Message ----- 
> .....  My temp sensor is on the radiator and this controls the electric 
> fan.   Thus when the rad is cooled while the car is stationary, off goes 
> the fan despite the fact that the engine block may be still stonking hot! 
> There is practically no heat path between them when the pump has stopped 
> swirling water.  Would it not be better therefore to put the sensor on the 
> block, or at least the intake manifold?

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