Optimum engine temp for E320 W210

[g1nganinja]

Hi all,

My E320 W210 normally idles around the 80 degree mark, but during recent bout of warm weather crept up over 90 degrees on occasion - particualrly when not moving much in traffic !!!

What is the optimum temperature for this car please and what are acceptable tolerance levels before i should get worried??

Mark

 

[cl55 amg]

mine is similar on a motorway run sits at 80, but round town more like 90.

 

[24 VRT]

Mine used to sit at 80 degrees in normal use, but when I told my indie about the poor cabin heating in winter he asked what temp she ran at and advised that the thermostat on the 320 cdi's was a weak point. They should run at 90 degrees in normal use - he changed the thermostat and not only did I get better cabin heating but she now runs at 90 degrees.
So a) I wouldn't worry about yours rising to 90, and b) it may be worth changing the thermostat.

 

[g1nganinja]

Thanks chaps, that sounds like no problem Phew !

Might well look at getting new thermostat though - my cabin temp is a bit variable too!

Mark

Mine used to sit at 80 degrees in normal use, but when I told my indie about the poor cabin heating in winter he asked what temp she ran at and advised that the thermostat on the 320 cdi's was a weak point. They should run at 90 degrees in normal use - he changed the thermostat and not only did I get better cabin heating but she now runs at 90 degrees.
So a) I wouldn't worry about yours rising to 90, and b) it may be worth changing the thermostat.

 

[renault12ts]

87oC is optimum. If your stat. is working correctly it will stick there no matter where you are driving.

 

[SimonD]

My C 320 sits at 80 too, is the Thermostat an easy swap?

 

[24 VRT]

Don't think it was too expensive for the thermostat swap, so it can't be too difficult - my indie does all the work on the old girl as my days of working on cars myself are long gone!