overheating - Temperature regulated by Heater

[Suku Phull]

On my 380SL(1984) the temperature starts to rise to max (idle and moving)and only reverses when put heating on full blast. Cooling fan seems to work OK. Can anyone suggest a cure pls.

 

[white190]

overheating

Sounds like you have a blockage in the main radiator
Try disconnecting the hoses and flushing it out with a hose pipe , Try to use as much pressure as possible , some of the gunge in rads can be hard to shift.

Don't forget to flush the heater Matrix as well .. to give a nice clean system.

Also it is definatley worth changing the thermostat in case it isn't opening fully or at all.

Those two usually cure most cars with those simptoms.


When refilling remember to use antifreeze in the rad water (It stops corrosion and prevents the futre blocking of the rad)


(Edited by white190 at 5:56 pm on June 21, 2002)

 

[sunil sood]

overheating

sukh,

had a similar problem on my 93 merc190e-it was a faulty cooling fan switch.

as for your 380,please visit the usa site-shopmercedes.com and use search in there and type in overheating 380-you will get a load of posts on your cars problem and possible solution-happy surfing.!!!

 

[sunil sood]

overheating

are you sure the fan is working properly?

is it an electromagnetic fan clutch type or the thermo-viscous coupling sort?

 

[Suku Phull]

overheating

Thanks guys for your suggestions

 

[sunil sood]

overheating

suku,

did you get it sorted?
just curious what was the cause and solution.