W210 300td thermostat.

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Phil Thomas

Active Member
Joined
Feb 3, 2009
Messages
146
Location
Cheshire, close to Manchester, and Pretoria SA
Car
1999 E300Td Elegance Estate, 1993 500 SE, 1995 Citroen Xantia 1.9 td, 1997 Land Rover Discovery tdi
Hi Guys,

Our car is a '99 E 300td estate. I recently (3 months ago) changed the thermostat. The thermostat is on the off side bottom of the engine, towards the front. The latest thermostat requires a new housing, which was also fitted. I considered carefully which way round the thermostat should go. As far as I remember it would only go in one way in any event. The car then ran at the normal temp, having previously had a thermostat stuck open.

The car broke down on Good Friday with severe over heating.

After fitting a new fan viscous coupling, which did not cure the problem, the dealer decided to order a new thermostat. After fitting it he said that the one I had fitted was the wrong way round, and that that had affected the diagnostics. As I took care, it ran at normal temp for some months.and am pretty sure it fitted only one way round anyway, I doubt that.

Does anyone know if in fact the new style will only fit one way round? Or am I going gaga?

Thanks fellas,

Phil
 

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