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Marlon
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Joined: 15 Jul 2019
Posts: 19
Location: Lancashire


PostPosted: Fri Jan 24, 2020 1:42 pm    Post subject: spoiler in manual mode Reply with quote

I videoed my spoiler in automatic mode and it raises at 77mph and lowers at 40mph.
I believe this is dependent upon engine temp and that when its hotter it rises at 50mph.

Anyway, here’s a question about manual setting: if I raise it manually after start up and leave it in manual mode (i.e. button green light on) when does the spoiler lower its self?
 
  
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Robertb
Dijon


Joined: 01 Sep 2003
Posts: 7587
Location: South Oxfordshire

2002 Porsche 996 Carrera 4S

PostPosted: Fri Jan 24, 2020 2:30 pm    Post subject: Reply with quote

After a manual raise, my 996 one goes back down when its gone through a 'cycle' of >75 mph then back below 50 or whatever it is.

I would have thought the spoiler would not make much difference to engine cooling as its closed off at the back with the rubber bellows.
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Shandythegreat
Spa-Francorchamps


Joined: 30 Oct 2012
Posts: 295
Location: Southampton


PostPosted: Fri Jan 24, 2020 2:58 pm    Post subject: Reply with quote

Click ign on and press the button - thatll keep it up all the time

engine running and button pressed, once its been through a cycle as mentioned, it returns to normal operation.

yes its dependent on engine temp, it may stay down at motorway speeds to help keep the hot air in. Least thats what I recall the hand book said....
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Marlon
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Joined: 15 Jul 2019
Posts: 19
Location: Lancashire


PostPosted: Fri Jan 24, 2020 3:15 pm    Post subject: Reply with quote

So if I have this right - if I raise the spoiler with the ignition on but without the engine running, then the spoiler says up all the time? I will have to test this.
If the spoiler is raised with the engine running the spoiler will retract once its gone through its cycle - ie over 75 then down to 40, but what happens if you don't drive through the cycle - ie if you dont reach the 75 mph?
 
  
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deMort
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Joined: 21 Mar 2015
Posts: 7829
Location: Brighton


PostPosted: Fri Jan 24, 2020 7:08 pm    Post subject: Reply with quote

As per image ..

Also as mentioned above the car will drop into auto mode when you hit 75 or 50 as per the image ... manual mode would need to be done when stopped if you wanted it up again .
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Captain Lockheed
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Joined: 19 Dec 2014
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PostPosted: Fri Jan 24, 2020 9:16 pm    Post subject: Reply with quote

@Demort will correct me if I am wrong, but this can be programmed in PIWIS.
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Marlon
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PostPosted: Sat Jan 25, 2020 4:23 pm    Post subject: Reply with quote

Thanks for all the replies. @demort - Based upon your post I assume that if its raised manually and you drive to the shops and don't get over lets say 30mph, then the spoiler will stay up and that it will remain up until you drive over the automatic lowering threshold, be that 38 or 40mph.
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7829
Location: Brighton


PostPosted: Sat Jan 25, 2020 7:07 pm    Post subject: Reply with quote

The spoiler can be coded on and off .. ie fixed wing or raised spoiler but i don't remember any coding for timing of the raise / lower .. at least on the piwis anyways .

When i service a car i raise the spoiler to lubricate the mechanism .. its up when i go on road test .. i will reach speeds of 65 but no higher ( country roads ) and the spoiler is still raised when i get back .

If you don't reach the auto speed for a raise .. ie 75 then it will not go into auto mode and lower on its own .

If the engine bay is hot .. as per the image then the auto speed would be 50 .

Basically if you never reach the automatic raise speed then it will stay up ..

if you wanted it permanently up then you would do this mechanically as i've never seen coding for this option .
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Marlon
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Joined: 15 Jul 2019
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Location: Lancashire


PostPosted: Sat Jan 25, 2020 10:54 pm    Post subject: Reply with quote

thanks deMort - Thats clear, in fact I tested this tonight and the spoiler was still up when I returned from a drive. To keep it up once the ignition is turned off I guess I'd have to press the 'raise button' so the green light came back on.
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7829
Location: Brighton


PostPosted: Sun Jan 26, 2020 8:03 pm    Post subject: Reply with quote

As far as i'm aware then if you raise the spoiler and then lock the car it will stay in the raised position .. i'm afraid i've not tested this as i've never needed to ...

Or in essence i've never bothered taking any notice if it does or does not !

I think this is what it does though .

Basically if in the raised position and you never hit the top speed for raising it on auto mode then it stays up regardless until you press lower on the spoiler button .

If you desire to have it permanently raised then i would suggest raising it then unplugging the motor .. i'm not sure if you will get error messages but i think not .
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Marlon
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Joined: 15 Jul 2019
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Location: Lancashire


PostPosted: Sun Jan 26, 2020 10:37 pm    Post subject: Reply with quote

What you're saying seems to be mirroring my testing. Its not that I want it permanantly in the raised position, I just want to know how it functions. Cheers Thumb
 
  
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Marlon
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Posts: 19
Location: Lancashire


PostPosted: Sun Feb 02, 2020 5:47 pm    Post subject: Reply with quote

Okay, so here is the result of my testing:

Automatic mode is as described in this thread i.e. rises and lowers at certain speeds depending upon the engine temperature (In my testing: raised at 77 mph, lowers at 40 mph)

Manual mode: if its raised before setting off by pressing the manual button (light on) the spoiler will then stay raised regardless of the speed for as long a the engine is running - I've been above 77mph and the spoiler is still raised when I park up.

Starting the car with the spoiler in the raised position the light defaults to off (automatic mode). The spoiler will retract if the car reaches 40mph and then returns to normal automatic functions. (If you don't get to 40mph the spoiler will stay raised.)

If the spoiler is in the raised position before starting off and the manual button is pressed (light on) then, as discussed, the spoiler will remain raised regardless of the speeds reached.

So to keep the spoiler in the raised position all the time, you need to press the manual button (light on) each time you start up the car.
 
  
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deMort
Dijon


Joined: 21 Mar 2015
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PostPosted: Sun Feb 02, 2020 6:27 pm    Post subject: Reply with quote

Very interesting and i've learnt something new .. which i always appreciate Thumb
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jl-c
Spa-Francorchamps


Joined: 22 Jul 2013
Posts: 276
Location: Shropshire


PostPosted: Sun Feb 02, 2020 6:31 pm    Post subject: Reply with quote

Leaving the spoiler up continuously means the rams are under constant pressure. Let me know when you need new rams , I had a man make me some, with removable tops to change the O-rings in future ( the originals are sealed units and AFAIK £1600 + from Porsche ) I replaced the O rings and internal springs and can supply as a kit ready to go if interested. I haven't got any in stock at present but if enough interest is there I'll get some done. I expect that they will be roughly £750 the pair , hopefully less.
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7829
Location: Brighton


PostPosted: Sun Feb 02, 2020 7:08 pm    Post subject: Reply with quote

jl-c has pointed out something very important .. i had assumed you had a non Turbo which is operated via cables .. my bad ..

The Turbo as he has pointed out is a pressure fed ram system ..

After looking then i find you haven't mentioned which car you have .. a sig would help Smile

For a Turbo then leaving it in the up position could well accelerate the wear on the system .

@ jl-c Thumb
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She's not going until july 2020 though .



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Marlon
Newbie


Joined: 15 Jul 2019
Posts: 19
Location: Lancashire


PostPosted: Sun Feb 02, 2020 10:15 pm    Post subject: Reply with quote

Its a 997.1 Carrera 2S - 2005

Incidentally, despite all my testing, I'm not intending to have the spoiler raised permanently in manual mode. I was simply curious as to the exact operation Wink
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7829
Location: Brighton


PostPosted: Mon Feb 03, 2020 7:32 pm    Post subject: Reply with quote

Yours is a cable operated system .. up or down it makes no difference to how long it will last .

Sig ... Thumb
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My Daughter's Crowdfunding has hit the target .

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Marlon
Newbie


Joined: 15 Jul 2019
Posts: 19
Location: Lancashire


PostPosted: Tue Feb 04, 2020 12:40 pm    Post subject: Reply with quote

Thumb Driving
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