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Author Subject: Heater stuck on hot
cwspellowe

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Location: Calderbank

Registered: 19 Jul 2009

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Post #1
Can anyone tell me if this could be the culprit, number 5?



Heater controls work fine and fan speed adjusts as it should. Temperature doesn't change at all though and it's doing my nut in, had to bypass the heater matrix all Summer and it's now getting towards the time where it would be nice to have a bit of heat but not full on sauna-esque atmosphere!

Think my problem lies with the regulator, as seen above, as i've had two sets of controls in the car and there's no difference. I'm actually debating removing the dash tomorrow and having a poke about.

Even with the blowers off the car still heats up ridonkulously, would it be fair to assume the regulator is stuck open and all cabin air is being diverted past the heater matrix? The dash also gets hot to touch too, again i'm guessing from the regulator being wide open constantly?

Makes a change from them NOT working, eh?

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Posted 20th Sep 2011 at 22:59
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roberts_306

Senior User

Location: Halesowen

Registered: 21 Nov 2007

Posts: 789

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Post #2
Under the bottom of the heater you will find a little motor, this moves when you turn the dial from hot to cold, its either broken or come off like mine did.

Tricky to get to tho.....Got pics if it helps Thumbs up

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Posted 21st Sep 2011 at 07:15
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cwspellowe

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Location: Calderbank

Registered: 19 Jul 2009

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Post #3
Please mate, I have an idea where it is but not how it's supposed to fit together. Checked last night and I can't hear anything working when I change the temperature dial so it's either one of the above or not plugged in Dry

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Posted 21st Sep 2011 at 09:07
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cjm_harris

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Location: Parts for Sale section

Registered: 04 Dec 2007

Posts: 7,442

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Post #4
How about leaving it on hot, and open the window if it gets too hot? Wink

Have you taken the central facia off at all to have a look? Swear this happened to a mate, and it was just the cable had come away. So when you turn the dial, dial turns but its not actually doing anything as cable is disconnected. Worth a look if you havent already Smile

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Chris
1999 China Gti6 Supercharged Devil [Fun car] >>Project Thread<<
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Posted 21st Sep 2011 at 09:14
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,817

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Post #5
heat is electronic on ac cars

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Posted 21st Sep 2011 at 09:15
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cwspellowe

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Location: Calderbank

Registered: 19 Jul 2009

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Post #6
cjm_harris wrote:
How about leaving it on hot, and open the window if it gets too hot? Wink

Have you taken the central facia off at all to have a look? Swear this happened to a mate, and it was just the cable had come away. So when you turn the dial, dial turns but its not actually doing anything as cable is disconnected. Worth a look if you havent already Smile


Cheers mate, but as Mei said it's an electronic dial that adjusts the stepper motor on the heater control flap.

Tried leaving it on hot but it gets unbelievably hot, last Winter I had to drive around with the windows open every 10 mins or so, might have been -10 outside but it was reaching 40+ in the car, so hot the missus stripped down to her pants when we were driving down to Blackpool. Had the sunroof permanently open and it was snowing outside Laugh my ass off

Normally i'd suck it up but with having the wee man I can't do that any more

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Posted 21st Sep 2011 at 09:19
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cjm_harris

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Post #7
cwspellowe wrote:
so hot the missus stripped down to her pants when we were driving


Yeah, like I said, leave it on hot Yes

f*ck it, break the window mechs too Laugh

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Chris
1999 China Gti6 Supercharged Devil [Fun car] >>Project Thread<<
2000 Bianca 306 Diesel [Work runabout]
Posted 21st Sep 2011 at 09:28
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cwspellowe

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Location: Calderbank

Registered: 19 Jul 2009

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Post #8
I'm hot enough for her already Whistle

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Posted 21st Sep 2011 at 09:37
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simonjames

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Location: Whitland S.Wales

Registered: 23 Nov 2004

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Post #9
Winters coming its ok to be stuck on hot, its when you have no heater its a problem

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Posted 21st Sep 2011 at 09:43
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cwspellowe

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Location: Calderbank

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Post #10
Nah it's still a problem, it gets TOO hot if you're driving for more than 10 mins. Considering the jobs i'm looking at are 15 - 20 miles away i'd rather not turn up a sweaty mess to start Laugh

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Posted 21st Sep 2011 at 09:44
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cwspellowe

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Location: Calderbank

Registered: 19 Jul 2009

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Post #11
Fixed, numbnuts here forgot to plug the regulator back in, all sorted now. To think I suffered all last winter and had to disconnect the matrix this summer all because of one daft wee plug Doh

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Posted 21st Sep 2011 at 11:06
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,817

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Post #12
Laugh my ass off eric :p

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Posted 21st Sep 2011 at 13:36
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simonjames

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Location: Whitland S.Wales

Registered: 23 Nov 2004

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Post #13
OH dear Smile

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Posted 21st Sep 2011 at 13:39
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ballardpaul

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Location: Croydon

Registered: 22 Jul 2008

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Post #14
cwspellowe wrote:
Fixed, numbnuts here forgot to plug the regulator back in, all sorted now. To think I suffered all last winter and had to disconnect the matrix this summer all because of one daft wee plug Doh


I got this exact problem but didn't have the dash out at any time. I did however change my carpet so maybe I knocked it Hmm have you got a picture of where this plug goes?

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Posted 21st Sep 2011 at 14:03
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cwspellowe

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Location: Calderbank

Registered: 19 Jul 2009

Posts: 6,496

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Post #15
In my projects thread mate, the regulator is tucked away behind the lower dash trim. Quick test for you, turn the blowers on full and switch from full hot to full cold. If you can hear a change in fan noise over the course of a few seconds your regulator's fine. If nothing changes, there's something wrong with the regulator, the wiring or the control panel Thumbs up

But yes, egg on MY face Doh

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Posted 21st Sep 2011 at 15:06
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ballardpaul

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Location: Croydon

Registered: 22 Jul 2008

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Post #16
Ok will try tonight! Hopefully as I really don't want to take the dash out.

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Phase 2 Blaze GTi 6 (Standard) Sold
Phase 3 Supercharged China GTi 6 (249.8 BHP) Sold
Phase 3 Supercharged Diablo GTi 6 (443 BHP)Sold
Nissan 350Z (300 BHP)
Posted 21st Sep 2011 at 15:39
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supergti6

Newbie

Location: plymouth

Registered: 26 Aug 2010

Posts: 33

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Post #17
just seen this thread now my heating works but doesnt get hot enough !! and now its gettin colder barely clears the window.
what could cause this and i f*cked both of the bawden cables that control the flaps how much of a pig are they to change

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Posted 16th Oct 2011 at 23:56
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