next problem......if its a problem!

[turbopete]

just started to use the ai conwith the EC light turned off. it priodically makes a "whooshing" sound like a pipe has come off in the heater ducting. it stops after a while, then a while later it starts again. is this normal? any idea of the cause of it? it may need re gas and/or new pollen filter. seems to work ok, just annoying! ive also noticed engine sems to run hotter with EC light off. is this normal? didnt have enough summer to find out when i bought it last year. sorry. its gone up from 80ish degrees to 90-95degrees.

 

[television]

It sounds normal to me, if it is blowing ice cold air on the lowest setting, if it is /was low on gas they often fail to work on hot days.

The engine will run hotter with it on,(ec lamp off) and the electric fan on the rad will come into play at 100c and cool it

 

[MBDiesal]

Completely normal. As they days warm up, the engine heat will rise and the electric fan will kick in and accomodate as required.

Anyway why drive with the EC Off? You get a far more comfortable ride with the climate control working as designed. The old days of AC significantly effecting mileage consumption are gone. Even with AC (EC) running continously you will only have to fill up the gas (on average) every 2-years at a cost of around £75.00. Enjoy the experience - that's what i say !!!

 

[television]

Completely normal. As they days warm up, the engine heat will rise and the electric fan will kick in and accomodate as required.

Anyway why drive with the EC Off? You get a far more comfortable ride with the climate control working as designed. The old days of AC significantly effecting mileage consumption are gone. Even with AC (EC) running continously you will only have to fill up the gas (on average) every 2-years at a cost of around £75.00. Enjoy the experience - that's what i say !!!

We all agree there, the cab stays free of condensation, and with climate control you are only using energy worth talking about, when you take the car temp below the ambient air temp out side.

I think that many cars can go for years now without re charging, places like quickfit will do it for £35-£40

 

[whitenemesis]

Completely normal. As they days warm up, the engine heat will rise and the electric fan will kick in and accomodate as required.

Anyway why drive with the EC Off? You get a far more comfortable ride with the climate control working as designed. The old days of AC significantly effecting mileage consumption are gone. Even with AC (EC) running continously you will only have to fill up the gas (on average) every 2-years at a cost of around £75.00. Enjoy the experience - that's what i say !!!

We all agree there, the cab stays free of condensation, and with climate control you are only using energy worth talking about, when you take the car temp below the ambient air temp out side.

I think that many cars can go for years now without re charging, places like quickfit will do it for £35-£40

Seconded!

I always leave the aircon on even in deepest winter :wink:

 

[television]

Seconded!

I always leave the aircon on even in deepest winter :wink:

Well you are a cool guy

 

[turbopete]

sorted then. not a problem at all temp wise! any idea on the noise? is it likely to be a build up of pressure and then a spell of "blow past" somewhere in the ducting system? only happens when EC light is off

 

[television]

Even on a domestic fridge you can here the liquid when you turn it off,. or the thermostat cuts

 

[turbopete]

no its nt a liquid sort of noise. its as though the air ducts get blocked andblow through the joints kind of noise. no effect on the blower pressure to the vents, just this weird noise every so often for a couple of minutes then it goes again for a while then re starts again! blwer never seems to blow particularly hard anyhow, but its the noise im curious about! why only when EC light off?

 

[LYNALL]

Is it climate control as they have a smelly sensor that detects bad air and switchs in the charcoal filter i think prob a crap description!

Wife always runs with her a/c on but for some reason no a/c equals misted up windows at any time of the year appears to be a 203 problem, one of many.


Lynall

 

[brandwooddixon]

In the W210 EC light ON means that the A/C is OFF.

If you have climate fitted then with the temps set to auto it will increase the interior fan speed as needed. If it needs to decrease or increase the temperature by a large margin then it will also close some flaps for recirculation of interior air rather than using just exterior air (which can be noisier).

If you switch your system onto auto and then depress the front screen demist, does it make the same noise as the one that you are concerned about?

 

[turbopete]

its air con only, not climate. noise only occurs when air con is ON ie the EC light is OFF. also i never use the recirculated air switch. always set to fresh air. noise never occurs when air con is OFF, thats whats baffling me. as i understand it, the only difference should be that the air cooler is operational with it on and not when the air con is off, so why the noise only ocurs when A/C is on i dont know. im hoping someone can help me with that!

 

[television]

The noise is the ice breaking up on the evaporator melting down and the liquid run down into the air intake box, it is this that makes the puddle of water under a car that has had the air con on

 

[turbopete]

so nothing to worry about then? phew! i was just concerned as none of the other cars in our family make this noise and they all have air con! (ford galaxy and W203) i thought i had a blockage in the ducting somewhere! no dash removal required then! phew!!!

 

[turbopete]

so now im really baffled. all 3 cars have air con the galaxy and the 203 dont make this noise with the air con switched on, the 210 does though. :-( typical! starting to think ive got a lemon!!!

 

[television]

so now im really baffled. all 3 cars have air con the galaxy and the 203 dont make this noise with the air con switched on, the 210 does though. :-( typical! starting to think ive got a lemon!!!

Sorry I wrote that all out wrong.

Cars with climate control do not run the evaporator as cold as cars with just air con. That is the difference.

Sorry about the confusion but I feel lousy today and am going to bed soon

 

[turbopete]

no probs Malcolm. im sure someone will point me in the right direction! hope you feel better soon!

 

[television]

There is another thing with air con on early cars, that is the compressor is controlled by a clutch, so when you turn the air con off the liquid is no longer under pressure and some will run back, this all makes noises.

Later cars have the compressor running all the time, with this system its always under pressure, so when you turn it off it is still going round and not running back

 

[turbopete]

apparently my compressor runs all the time but just cools when EC light is off ie A/C is on. however im not sure if this noise im worried about can be heard from outside the car. think im going to check the pollen filter and see if its got a charcoal filter and check theyre not blocked. gives me something different to do! lol!

 

[Cavan]

Turbo pete, did you manage to get to the bottom of this noise.
I just got back from my MOT with my '98 W208 320 and heard what sounds like the same noise as that described. Again only occurs when the A/C is on - seems to change pitch when in N or P.

They really revved the b-lls off it during the emmissions test - could that do anything? Could he have caught something underneath while poking around?

Passed MOT with flying colours - even the beast of an engine passed the emmissions - but not happy about the new noise!