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Centre Blower Vents

abercanadian
Snr Member
Posts: 1104
Joined: Tue Oct 16, 2012 6:50 am
Location: Vancouver Island

Re: Centre Blower Vents

Postby abercanadian » Thu Jun 23, 2016 4:18 pm

Don't want to be Captain Obvious here but you know the centre flaps only open when the climate control is actively cooling the car, right?

They won't open if the ambient temp is less than the temperature set on the control.

Just checking!! :D

Larry
Image
94 XJ40 VDP vin 701729
Oyster Metallic/Doeskin on Aero Alloys
220,000 Kilometers/136,700 Miles
Daily Driver

94 XJ40 SOVEREIGN vin 703632
Diamond Blue Metallic/Barley
111,000 Kilometers/69,000 Miles
Parts Car

richard1983
Posts: 138
Joined: Tue Apr 26, 2016 12:02 pm
Location: East Sussex

Re: Centre Blower Vents

Postby richard1983 » Thu Jun 23, 2016 4:48 pm

abercanadian wrote:Don't want to be Captain Obvious here but you know the centre flaps only open when the climate control is actively cooling the car, right?

They won't open if the ambient temp is less than the temperature set on the control.

Just checking!! :D

Larry


Thanks for checking my sanity! But unfortunately no - they simply don't open at all.

After listening to all the wheezing and wonderful vacuum(ish) noises coming from the centre housing - I'm thinking there is an issue with the motor that operates the flaps.
It certainly sounds like the system is trying very hard to do its thing, but the flaps won't shift.
It's shaping up like a strip down.
1993 4.0 Sovereign, Flamenco Red.
1994 6.0 Daimler Double Six, Silver Frost.
2012 Mercedes E350, Obsidian Black.

naki_k
Super Moderator
Posts: 27827
Joined: Sun Feb 21, 2010 9:25 pm
Location: Kirton, nr Boston, Lincolnshire

Re: Centre Blower Vents

Postby naki_k » Thu Jun 23, 2016 8:55 pm

Did you try pressing the "manual" button?
Also make sure demist is not pressed.
As demist will close the centre vent to send everything to the screen.
88 3.6 XJ6 PDH/CEM
90 Range Rover Vogue SE 3.9 V8 LPG
91 3.2 XJ6 SportPack Manual
91 4.0 XJ6 Manual
92 4.0 XJR Manual
92 4.0 XJR
93 3.2s - 4.0 Manual conv
93 4.0 Sovereign
93 6.0 XJ81 DD6
93 6.0 XJ81 XJ12
94 4.0 XJR
96 4.0 X306 XJR
96 4.0 X300 D6
97 4.0 X300 Sport Manual
2000 LR Discovery ES TD5 A
Breaking 40/ 300

richard1983
Posts: 138
Joined: Tue Apr 26, 2016 12:02 pm
Location: East Sussex

Re: Centre Blower Vents

Postby richard1983 » Fri Jun 24, 2016 9:43 pm

naki_k wrote:Did you try pressing the "manual" button?
Also make sure demist is not pressed.
As demist will close the centre vent to send everything to the screen.


Yep, tried the manual button today. No change to the centre flaps I'm afraid.
Perhaps I should fashion some long sticks to permanently hold them open!
Or just dig in and fix the issue!
1993 4.0 Sovereign, Flamenco Red.
1994 6.0 Daimler Double Six, Silver Frost.
2012 Mercedes E350, Obsidian Black.

naki_k
Super Moderator
Posts: 27827
Joined: Sun Feb 21, 2010 9:25 pm
Location: Kirton, nr Boston, Lincolnshire

Re: Centre Blower Vents

Postby naki_k » Fri Jun 24, 2016 10:50 pm

richard1983 wrote:
naki_k wrote:Did you try pressing the "manual" button?
Also make sure demist is not pressed.
As demist will close the centre vent to send everything to the screen.


Yep, tried the manual button today. No change to the centre flaps I'm afraid.
Perhaps I should fashion some long sticks to permanently hold them open!
Or just dig in and fix the issue!


I would perhaps hold off until you are using the car regularly. It may well come back to life in time.
I would expect there will be pressing issues in the interim.
88 3.6 XJ6 PDH/CEM
90 Range Rover Vogue SE 3.9 V8 LPG
91 3.2 XJ6 SportPack Manual
91 4.0 XJ6 Manual
92 4.0 XJR Manual
92 4.0 XJR
93 3.2s - 4.0 Manual conv
93 4.0 Sovereign
93 6.0 XJ81 DD6
93 6.0 XJ81 XJ12
94 4.0 XJR
96 4.0 X306 XJR
96 4.0 X300 D6
97 4.0 X300 Sport Manual
2000 LR Discovery ES TD5 A
Breaking 40/ 300

Steve_D
Snr Member
Posts: 227
Joined: Fri Jun 20, 2014 1:45 pm

Re: Centre Blower Vents

Postby Steve_D » Sat Jun 25, 2016 12:30 am

I had this problem and it was caused by the lever from the vacuum servo disconnecting from the flaps. Ages ago but an easy fix. I gently prised off the wood trim to reveal four screws holding the vent unit in place under some tape. Undid the screws and the vent unit slid out. The vacuum servo stayed in place at the rear as did the flaps that it controls .It all became obvious I remember. Proceed with caution but have a go - it worked for me. Don't chip the trim though! Also a good opportunity to clean out all the muck and dust from behind there.

Gregorto
Posts: 3
Joined: Sun Feb 18, 2018 1:45 am

Re: Centre Blower Vents

Postby Gregorto » Thu May 31, 2018 5:13 pm

Yes Steve_D you have my eternal gratitude, for thanks to You kind Sir I have regaind my central ventilation Image


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