[Vwdiesel] More on coolant flow through radiator

[gary]

Just throwing this out there...

Have you verified the operation of your temp gauge with a another?

My Rabbit PU didn't come with a temp gauge(just and idiot light). I just
installed a mechanical temp gauge. A Sunpro from Advanced Auto
Parts(Kragen everywhere else). It was a pain to plumb in, but well worth
the effort.


-Gary 


On Thu, 2004-09-02 at 21:31, Wade Yorke wrote:
> The radiator is just three years old and is new, not a re-core.  A new 
> thermostat was installed with the engine less than a year ago.  The 
> expansion tank is from a Jetta rather than from the old gas engine.  
> The water temperature needle would stay just below the LED with the old 
> wasserboxer and with the diesel it runs just above the LED during 
> normal driving, but when running fast (a relative term with a 75 hp 
> diesel in a 5,000 lb vehicle) on the highway or pulling up a long hill 
> the temperature will rise.  I have noticed that the engine and heater 
> warm up much more quickly with the diesel than the gas flat four.  This 
> I found strange as diesels are not known for fast warmups, especially 
> around town.
> I believe it is a closed system with the radiator at the highest point 
> in the cooling system.  Could the passage ways in the radiator be 
> designed to flow coolant better in one direction?  The installation 
> instructions cautioned that the hose going to the expansion tank had to 
> be reduced so the coolant would be forced to the radiator rather than 
> just looping through the expansion tank.  When I looked I found that 
> the hose going to the expansion tank was much smaller in diameter than 
> the hoses going to the radiator so I did not try to reduce it any 
> further.
> 
> Thanks for the responses
> 
> Wade Yorke
> '84 Westy 1.9TD 
> 
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