Thermostat replacement

[pikeface999]

My E270 has been suffering from low temperature 50-60 degrees. After reading several threads it was clear that I should replace the thermostat. I now have the thermostat and am going round a friends to replace it this evening. However when I stopped at a shop to pick up the oil filter removal tool while checking I have the correct one I noticed that the fan was turning while the engine was running and the temperature was only about 70 degrees. Does this mean that I really only needed a temp sensor or would you expect this ?

 

[huey]

The fan will turn a bit with the engine running, was it spinning really fast and making a humming noise? The fan kicks in about 95.

 

[pikeface999]

thanks

 

[S.Speed]

I dont think my fan turns at all when the engine is running at the normal temp..

 

[huey]

I dont think my fan turns at all when the engine is running at the normal temp..

Thanks Simon, you know this model better than I do mine turns but only slowly.

 

[pikeface999]

Mine turns slowly only when air con is on .

Anyway thermostat is now changed and the car gets up to temperature.

The replacement thermostat was not quite the same which caused a few problems.

1 No thread at the front
2 Temperature sensor was not a tight fit so had to use a second o ring.
3 there was a pilot hole for pipe clamp but no thread so taped one

Will give it a proper run tomorrow.

 

[television]

With the engine only getting to 70, the heater will will very poor as the weather gets colder

 

[pikeface999]

Excellent approx 90 degrees mid point on gauge.

Are these common issues or was I unlucky

1 No thread at the front
2 Temperature sensor was not a tight fit so had to use a second o ring.
3 there was a pilot hole for pipe clamp but no thread so taped one

 

[RichardCC]

H'mm W210 E300 TD runs at just under 80 so I think a new thermostat is on my wish list, now that I've read this thread

thanks

 

[pikeface999]

So on a 60 mile run I manged to get 56 mpg at one point. Got stuck in traffic for 20mins and this reduced to 52mpg over the 120 miles.

smoking

 

[S.Speed]

Its normal for the pipe clamp not to be tapped..
And yes its a fairly routine (about every 5 years) procedure to change the thermostat..
Ive had 2 x C270 Cdi and have had to change the thermostat on both..
My temp sensor didnt inspire confidence so I daubed a little Hylomar blue on it..
Its never leaked anyway !!

 

[pikeface999]

Sorry for the late reply but thanks. Have away for a weeks holiday.

Regards Jeremy