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Rear Spoiler With Mind of Its Own

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Bishop   
Wed Jan 15 2014, 05:34pm
Joined: Apr 16 2012
Member No: #868
Location: Harpenden
Dear All, the rear spoiler has been up and down like a fiddler's elbow over recent weeks, and with what seems to be increasing frequency. So, I drive down to the shops, get out the car and it's in the extreme elevation position (I must have maxxed at 29 MPH). It then retracts after the doors have self locked. I then get to a round about and notice that it has elevated (again, having gone no where near the trigger speeds of 78 MPH), a few minutes later and I again notice it has retrated itself. Has anyone had a similar phenomenon? It's not a problem really, I am just curious as to whether it is a precursor to a more permanent problem?
C6Dave   
Wed Jan 15 2014, 06:01pm

Joined: Oct 01 2009
Member No: #1
Location: Northumberland
There is another thread on miss behaving spoilers and I think, it was related to a speed sensor?
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1 User said Thank You to C6Dave for this Post :
 Bishop (21 January 2014)
magicands   
Wed Jan 15 2014, 06:22pm
Joined: Sep 13 2012
Member No: #1021
Location: Coventry, Warwickshire
Well its not the motor or the fact that the iron work is seizing. I like Dave suspect a faulty speed sensor or perhaps some damp has got into the system somewhere.
Wait until warmer weather & see if it cures?


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1 User said Thank You to magicands for this Post :
 jacktherev (15 January 2014)
DiscoBison   
Fri Jan 17 2014, 03:06pm
Joined: Aug 15 2012
Member No: #989
Location: Portsmouth
I had a similar problem recently, and was simply cured by ensuring the spoiler hinges and sliders were adequately lubricated.

I believe the seemingly random full elevation of the spoiler is due to it's anti-pinch feature, designed stop fingers getting trapped or the motor burning out due to some obstruction. If it attempts to go to full close from the mid position and there is any resistance it triggers the anti-pinch feature. This puts the spoiler into fully deployed mode.

I fully stripped my bootlid lining to understand how the spoiler works. The motor is simply a Webasto sunroof motor driving two flexible plastic toothed strips. These strips pass through the bootlid and move the sliders visible when the spoiler is in the up position. The motor looked identical to sunroof motors used in other PSA cars from a quick glance on ebay. Might be a cheap alternative for a replacement motor if required.

As it turned out just lubricating the exterior components of the spoiler did the trick for me.
6 User said Thank You to DiscoBison for this Post :
 C6Dave (17 January 2014) , cruiserphil (17 January 2014) , gmerry (17 January 2014) , Tjensen (18 January 2014) , Bishop (21 January 2014) , userpco (07 January 2016)
gmerry   
Fri Jan 17 2014, 03:25pm
Joined: Dec 11 2009
Member No: #21
Location: Scotland
DiscoBison, I tried the Say Thanks but my server stopped me on this.

I lubricated the slider and hinges when the car was only 14 months old and have never had any problems whatsoever. So it would appear any problems are just down to lack of maintenance

Thanks for the explanation
G
3 User said Thank You to gmerry for this Post :
 cruiserphil (17 January 2014) , smihaialex (19 January 2014) , jacktherev (21 January 2014)
cruiserphil   
Fri Jan 17 2014, 06:37pm

Joined: Jan 24 2010
Member No: #38
Location: Celbridge
DiscoBison,

I second G's thanks. Very helpful post.

Regards,

Phil C.
1 User said Thank You to cruiserphil for this Post :
 smihaialex (19 January 2014)
Bishop   
Tue Jan 21 2014, 12:21pm
Joined: Apr 16 2012
Member No: #868
Location: Harpenden
likewise - thanks to all, very helpful
jacktherev   
Tue Jan 21 2014, 10:24pm
Joined: Sep 06 2013
Member No: #1423
Location: Co Down, Northern Ireland
gmerry can I ask what you lubricated the slider with please?
gmerry   
Tue Jan 21 2014, 10:49pm
Joined: Dec 11 2009
Member No: #21
Location: Scotland
Lubrication was via a general spray with Bilt Hamber Ferrosol over mechanism and a wipe of Castrol CL Grease (or whatever you use for the door hinges and bonnet lock).

The CL grease is soft and water resistant.

Regards
G
2 User said Thank You to gmerry for this Post :
 jacktherev (22 January 2014) , cruiserphil (22 January 2014)
smihaialex   
Thu Jan 23 2014, 09:46am
Joined: Sep 18 2012
Member No: #1031
Location: Bucharest
CL stands for Calciul and Lithium... I use the same thing but marketed by Total as LiCa Grease and found it very very effective, even if a bit messy :P

I highly recommend it.

Cheers,
Sam
1 User said Thank You to smihaialex for this Post :
 jacktherev (23 January 2014)
 

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