Climatic just blowing HOT air with AC off

[vwpolo]

Just joined the forum as I rcently got a 3 year old Polo (1.4 16v).

Has a developed an intermittent fault -- blows hot air when temp dial is on coldest setting :zx11: . AC is Off. turning temp dial does not change anything. Restarting the car sometimes clears the fault. Turning A/C on does not cool either. It has been re-gased recently. Sometimes with the A/C ON, turning the fan speed to full speed quickly start to cool the car -- but only sometimes.

Is this a know problem with Polo's ?
Any suggestions ?

[vwpolo]

Nope. I guess I have joined the wrong forum.

[MalcQV]

Welcome, sorry you never got any suggestions. It might be that this is something that has not occurred on a Polo before on this forum.

You may also try posting in the Polo section :beerchug:

[vwpolo]

Thx MalcQV. I searched the Polo section and did not see anything similar. I guess I can move this.

[RAMA]

hi my name is RAMA,dont know if I am doing this right,but i am trying 2 help vwpolo with heating problem sugest that you change your heater valve polo

[Eshrules]

Thx MalcQV. I searched the Polo section and did not see anything similar. I guess I can move this.


welcome to the forum, as has been suggested by malc, try posting the thread IN the polo forum, not just searching and you may receive more replies, this area of the forum tends to get a little neglected as people tend to specialise in a particular vehicle, hence they normally stay in the relevant forum area.

i would suggest though, you may not receive a reply straight away and encouragment is always given to become an active member, not simply posting when you have a problem.....

consequently i have read on this forum that a valve becomes blocked, which stops the air flow from funcitoning properly, you might want to search in passat and golf posts as well....

good luck in addressing the fault :beerchug:

[vwpolo]

hi my name is RAMA,dont know if I am doing this right,but i am trying 2 help vwpolo with heating problem sugest that you change your heater valve polo
Thanks RAMA for the tip. Just got to find out how do do it now :)
:beerchug:

[vwpolo]

[quote=eshrules;17668]welcome to the forum, as has been suggested by malc, try posting the thread IN the polo forum, not just searching and you may receive more replies, this area of the forum tends to get a little neglected as people tend to specialise in a particular vehicle, hence they normally stay in the relevant forum area.
/quote]
Thanks eshrules. Sorry for the dumb question, but how do I move this thread ? or should I just start again ?

[MalcQV]

[quote=eshrules;17668]welcome to the forum, as has been suggested by malc, try posting the thread IN the polo forum, not just searching and you may receive more replies, this area of the forum tends to get a little neglected as people tend to specialise in a particular vehicle, hence they normally stay in the relevant forum area.
/quote]
Thanks eshrules. Sorry for the dumb question, but how do I move this thread ? or should I just start again ?

You can't actually move it only a mod can. He means re-post it in the Polo section ;)

[onzarob]

I'll move it for you.

Rob :D

[vw1992]

Hi there,

We have a Polo which does the same, i.e. the heater just blows hot air irrespective. I would say it was a sensor fault and I know there is one in the pollen filter housing.
However, it fixes itself every time by switching the engine off then back on again. It does this occasionally so doesn't present too much of inconvenience.
When it's working, the air temp. changes very quickly when the temp. dial is varied so this suggests that it's not a water valve that at fault?Somebody must know!

Cheers

[IshH]

I have a 53 plate Polo and have the same problem - checking some of the other forums this appears to be a "common" fault - still trying to get to the bottom of the cause.

[Clem]

I had this problem with my previous POLO (a 1.4 FSI). It was diagnosed as a faulty heater control flap. This unfortunately required removal of the whole dashboard to fix it.

Luckily the car was still under warranty as it took the dealer a day and a half to do the job.

The guy on the service desk said they had 'fixed a few of these before', so it is not an unknown problem.

Sorry for the delay in replying but I have only just read the original query.

Hope this helps

[IshH]

Ouch!

Thanks for the info - I feared it may have been a "big" job.. seems the wife failed to mention the problem while the care was under warranty. There's little chance of it being changed now if its going to to take VW to fix - it'll be hellish expensive.

Thanks!

[djl78]

I have the same problem and can confirm it's probably the heater flap/temp selector.Unlike older models which have the good old fashioned bowden type cable newer models have an electrical actuator instead.
If you can squeeze your head into the passenger footwell and look up behind the dash you should be able to see the actuator.
Somewhere on this forum is a post that describes similiar problems and heater flap motor was changed to no avail,temp selector knob fixed it though.

djl

[IshH]

Thanks djl

Will look for that other post, will check out the actuator & switch before contemplating removing the dash...!

[jimcornwall]

I posted this on a previous thread about the same problem. Hope this helps. It seems to a major problem with these heaters but VW won't seem to admit it. I would push the VW dealer to ask VW for finacnial assistance on this if I were you. I would have doen but as I said I did have a non-VW warrentee that paid for most of the work.
I've had the same problem with my 2003 Polo heater. It was OK when I first bought it but that was during last summer so no need for heat. I tried all the above fixes but no permanent solution.
I have now recently taken it to main VW dealer who localised the problem to the faulty flap motors. They charged £360 to fix but fortunately I had a warrantee given to me by dealer that sold me the car (non-VW) so that covered most of the costs (£300).
I asked the service receptionist if this was common/known problem with the Polo but she said 'not that she knew of; they'd maybe had another one before'!!
Thye said I would have to leave it for a day as they had to get the parts but miraculously they found the motors in their store so fixed it in a day! If its not a common problem how come they had the parts in stock? Not very economic to keep parts in stock that would never get used!
However must say that they were very helpful and courteous!:Blush:

[vw1992]

Hi Folks,

Interesting solutions! The Dealer seems to be doing alright. I quite agree that if they have the parts in stock, it must be a common problem.

I suppose changing the temperature switch would be the first thing to try.

Just recently a coil went kaput (no. 1 cylinder) so the plugs have outlasted one of the coils (mileage is 35K).
Fairly simple job to replace and only £29.50 from the VW parts dept and yes, they were in stock! The plugs are a tenner each apparently.

It's nice to know that Haynes have now published a workshop manual for this model.

Cheers

Don

[d3nster]

Hello All,
the wife's 53 plate Polo is suffering a similar problem. Seems it to blow only hot air out regardless of the temp control setting. It would seem that this is looking quite a common problem for VW.


I posted this on a previous thread about the same problem.

Jim can you post a link to the other thread you mentioned please.

[2oomph]

hello mate, i have this problem in my polo, its a bloody pi**take, i also got the damn power steering fault and its stopped working, car is undrivable.:mad:

back to the hot air fault i just switched my engine off and back on again and sorted it, but im seriously thinkin about sellin the car once i sorted the power steering fault as this is blatant power build quality by vw, i used to have a punto mk2 on a 02reg the same prob's power steering stopped workin then the head gasket blew, so moved to vw's but it looks like there just as bad, well just new one's i think i mate has a Nreg 1.4 cl done 155k miles and runs perfect, think i might just get one of them
thanks;)

[d3nster]

Sorry to hear about the misery with the Polo, 2oomph. The wife's has been pretty good on the whole.

The blower problem I reported also sorted itself out with no repeat up to this point. I have a warm feeling that that is not the last time it's going to stick.

[CERBERUS]

I also have this problem on my 2002 Polo 1.4 tdi.
The original problem I had in 2003 was the air recirculation button (when pressed) would only stay illuminated for approx 5-10 seconds before going out. This was diagnosed as the heater control flap and repaired under warranty. I now have the same problem you all seem to be suffering from, continually blowing hot air even on the cold setting. I hav'nt yet tried turning the ignition off to see if this will reset it, but I sometimes turn the temperature dial full cold to full hot several times rapidly and this sometimes cures the fault for the rest of the journey. However I am still searching for a more permanent solution, if anyone could help.

As I have already had the heater control flap replaced, can anybody tell me if this part was modified in later models, or could it be the heater control knob/panel.

[lund-dean]

Hi,

the heater controls as in temperature controls on the 2001 and 2002 polo are operated mechanically by cables. as you turn the temperature control to hot/control it pulls on a cable that then alters the temperature via an actuator. Its common for the arm that connects to the cable to break. The cable is simply a push fit on to the arm, i.e the cable has a o ring shape at its fixing point which then pushes on to a post made from an alloy on the temperature control.

Anyway its worth removing the centre console, and checking. there are 2 10mm nuts located under the gearbox covering, to remove the conver just pull on it gently and evenly from all four corners. also there are two or four torx screws which need to be removed, but there are only exposed once the covering above the heater controls is removed, which again is held on by torx screws. you will need to open the glove box and look on your rhs to find one of the torx for the covering panel, and the other is on the drivers side.

anyway the outcome if i am right is that you will either need either a new heater control as the arm may of broken or just to refit the cable. On the few that i have seen this problem which include 2 T4's and a few polos the arms seem to break.

hth

L