Heater air not hot enough? - Electrical Forum - Peugeot 306 GTi-6 & Rallye Owners Club

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Subject: Heater air not hot enough?

ballys16

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Location: Godollo

Registered: 05 Mar 2009

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Post #1

Hello Everyone,
With winter being quite cold here (-9C yesterday) I noticed that although the heater is working it somehow does not produce the heat I expect from it.
Its not cold, not hot, sort of mild?
Water temp is fine, no overheat, bled OK, no airlocks it seems. Also, the heater matrix does not fog the windows, nor does it leak.
The higher rpm I put the vent to the cooler the air.
Also, with higher engine RPMs the air seems to get hotter, but cools off when the car is stationary or when the cooler vents kick in.
Heater matrix on its way out? Or clogged?
Suggestions welcome.
Thanks!

PS: coolant level is normal, and it is filled with antifreeze from Pug (100%, no water added).

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Posted 18th Dec 2009 at 15:03

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rallyestyle

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Registered: 23 Jul 2003

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Post #2

What settings do you have the vents on? I think the GTI6 may have electronic control of the heaters so something there could be malfunctioning?

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Just Drive It

Posted 18th Dec 2009 at 16:37

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ballys16

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Post #3

rallyestyle wrote:

What settings do you have the vents on? I think the GTI6 may have electronic control of the heaters so something there could be malfunctioning?

P1 S16/XSI, but is the same as GTi6.
It is partially automatic, yes.
The electronics don't seem to malfunction for all functions work. Its only the amount of heat that I find appalling.

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Posted 18th Dec 2009 at 17:00

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rallyestyle

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Post #4

ballys16 wrote:

rallyestyle wrote:

What settings do you have the vents on? I think the GTI6 may have electronic control of the heaters so something there could be malfunctioning?

P1 S16/XSI, but is the same as GTi6.
It is partially automatic, yes.
The electronics don't seem to malfunction for all functions work. Its only the amount of heat that I find appalling.

I think the heat selector is a cable though right? Do you have any control over the heat? i.e. can you move it from luke warm to cold?

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Posted 18th Dec 2009 at 17:08

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ballys16

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Post #5

rallyestyle wrote:

ballys16 wrote:

rallyestyle wrote:

What settings do you have the vents on? I think the GTI6 may have electronic control of the heaters so something there could be malfunctioning?

P1 S16/XSI, but is the same as GTi6.
It is partially automatic, yes.
The electronics don't seem to malfunction for all functions work. Its only the amount of heat that I find appalling.

I think the heat selector is a cable though right? Do you have any control over the heat? i.e. can you move it from luke warm to cold?

Hm, I think its not a cable.
I can move it freely and it does change the air temp - just hot in this case is mild only. Can take off my coat, just my swimming trunks won't do Smile

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Posted 18th Dec 2009 at 17:46

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jim01uk

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Post #6

If it has climate control then the heat selector is an electronic actuator.

Posted 18th Dec 2009 at 19:04

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ballys16

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Post #7

jim01uk wrote:

If it has climate control then the heat selector is an electronic actuator.

Yes, I have an "auto" AC.

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Posted 18th Dec 2009 at 19:39

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ballys16

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Post #8

Isn't there a flap that diverts air to pass through the heater matrix?
Or how does this work?

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Posted 19th Dec 2009 at 15:13

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bobdylan_55

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Post #9

rev it harder it will heat up more Wink

lol
or cover up part of radiator so it gets hotter.

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Posted 19th Dec 2009 at 16:05

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ballys16

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Post #10

bobdylan_55 wrote:

rev it harder it will heat up more Wink

lol
or cover up part of radiator so it gets hotter.

With ice & snow I think the revving bit is not going to work out just now Smile

As for covering the rad - coolant temp is ok according to the dial....

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Posted 19th Dec 2009 at 19:29

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ballys16

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Post #11

ballys16 wrote:

Isn't there a flap that diverts air to pass through the heater matrix?
Or how does this work?

Just experimenting.
I can get totally cold air, so the flap is working to some point.
Also, if I set the circulation to cabin, it is ~OK (windows will mist of course)

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Posted 19th Dec 2009 at 19:35

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ballys16

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Post #12

ballys16 wrote:

Isn't there a flap that diverts air to pass through the heater matrix?
Or how does this work?

Just experimenting.
I can get totally cold air, so the flap is working to some point.
Also, if I set the circulation to cabin, it is ~OK (windows will mist of course)

Also, just checked: both hoses are hot.
The flap motor does engage, and it makes a sound when it reaches both of its limits.
Point of "engagement" is somewhere in the middle of the cold zone.
AC + inside circulation more or less made things comfy. Switching to outside air it cooled off right away.

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Posted 19th Dec 2009 at 23:07

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mangledmetal

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Post #13

the auto temp sensor in the dash mucky?

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Posted 19th Dec 2009 at 23:21

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ballys16

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Post #14

mangledmetal wrote:

the auto temp sensor in the dash mucky?

Where can I find that?

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Posted 19th Dec 2009 at 23:31

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ballys16

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Post #15

ballys16 wrote:

mangledmetal wrote:

the auto temp sensor in the dash mucky?

Where can I find that?

Funny how -18C on Sunday became +16C by Friday....
Of course heat is OK for today Big grin

Still, auto temp sensor - what is it?

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Posted 25th Dec 2009 at 17:19

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andy306gti

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Post #16

Does it get significantly warmer when revved/driving and gradually cooler on idle? Had a similar problem with mine, Then the heater matrix broke which I then replaced and voila constant hot air. happened to a mate of mine with an xsi as well so I think it might be quite common.

Posted 26th Dec 2009 at 01:32

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dave555

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Post #17

have u checked the water level thats what was up with mine the other day , thats how i found out i had a leak

Posted 26th Dec 2009 at 02:10

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ballys16

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Post #18

andy306gti wrote:

Exactly - hot whilst driving, cool on idle.
Will have the matrix changed in January.
Pug tech charges ~50 pounds for labour... outside "office" hours of course...

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Posted 26th Dec 2009 at 02:17

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ballys16

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Post #19

dave555 wrote:

have u checked the water level thats what was up with mine the other day , thats how i found out i had a leak

Yes, checked and no air locks whatsoever, antifreeze at -30C.
Matrix to be changed shortly.

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Posted 26th Dec 2009 at 02:18

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armzsc6

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Post #20

Sounds like heater matrix to me, I've done several of these and have to say i wouldnt be interested for

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Posted 26th Dec 2009 at 05:39

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ballys16

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Post #21

armzs16 wrote:

Sounds like heater matrix to me, I've done several of these and have to say i wouldnt be interested for

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XSi 8V -> S16

Posted 26th Dec 2009 at 19:37

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