problem with heater w210

[television]

it's typed on the thermostat: 71C.
just to note that the circulating pump is running when the engine on and off.

That is not correct, there is no thermostat made with that figure, the only one for your engine is

A 1112000315 THERMOSTAT,
87 degrees;range of delivery

And that is the same as my above post

 

[television]

You have the temp gauge in the dash and that should tell you of the engine running temp

 

[amkahal]

the temp gauge is below 80 a little, on highway.

 

[television]

Below 80 will not give a very warm car by the time the air has been blown.

I know this from my 140, it was never above 80c when driving and the heater was poor, the new stat took it up to 87c and it makes all the difference.

 

[amkahal]

Below 80 will not give a very warm car by the time the air has been blown.

I know this from my 140, it was never above 80c when driving and the heater was poor, the new stat took it up to 87c and it makes all the difference.

i appreciate you help, another question came to my mind, let us say that a thermostat of 87c will solve the problem, but my heater has no heat at all, almost cold, so what do you say ? seems that i have another problem, right ?

 

[television]

2 things only,,, either the duo valve has failed on both sides or the heater matrix is blocked

 

[amkahal]

WooOOooW, All Toasty Now !

Thanks you all guys, especially 'Television' for help.

my problem was a stuck duo valve, so i cleaned it.

good luck all.

 

[television]

So pleased, we do not want our members to get cold feet

 

[amkahal]

Actually, i removed the 2 "conic form" pieces from the duo valve to test the heater in full power, my question is : how do that affects my A/C system ??

 

[television]

The little valves that sit in the end of the solenoid are not often the trouble,it is the actual solenoid its self that gets stuck as the rubbers that seal it swell jamming them.

Some folk re build them but it is very time consuming to do so that they do not leak. It better to buy a new one as the air con will not work well if the valves are open all the time.