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thesmithsUK
Monza


Joined: 07 Dec 2014
Posts: 229
Location: Cornwall


PostPosted: Sat Mar 03, 2018 5:07 pm    Post subject: Failed spoiler motor? Reply with quote

Hi,

Rear spolier has been playing up.

Was working intermittently. Occasional warning light on dash. But hasn't worked for a couple of weeks.

So...I disconnected the gear mechanism from the motor. Tested it via my variable speed drill. Went up and down OK, though not as quiet as it should be. So I did the new 'ball bearing' fix courtesy of: https://www.bergvillfx.com/spoilerrepair/

It now goes up and down (when I power it from my drill) silently. So far so good.

But the motor won't power it! Is there an easy way to test the motor? (Related fuse is fine btw.)

Replacement ones seem to be north of £300!


_________________
1990 964 C4 Cab | Manual | Brilliant Red Metallic
1984 Ferrari Mondial QV Coupe | Manual | Argento Silver + Bordeaux
1984 924 2.0 N/A Black | Black
Ex 2004 996 C4S | Manual | Seal Grey
Ex 1991 TVR 450 SEAC | Manual | Cureton Green
 
  
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Zingari
Donnington
Donnington


Joined: 25 Oct 2009
Posts: 12572
Location: Cheshire

1993 Porsche 964 Anniversary

PostPosted: Sat Mar 03, 2018 5:42 pm    Post subject: Reply with quote

Isn't the spoiler linked to a ABS speed sensor on the rear left wheel? Could be a dirty contact?

Does your speedo work OK? Check R52 in the fuse box

Some info here:

https://rennlist.com/forums/964-forum/854883-another-964-spoiler-thread.html
_________________
Alfa Romeo’s 4C is everything a Italian sports-car should be: it’s gorgeous to the point of pornography, distinctive enough that nobody will ever mistake it for a Porsche, handles like it’s on rails and steers like a kart.
 
  
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thesmithsUK
Monza


Joined: 07 Dec 2014
Posts: 229
Location: Cornwall


PostPosted: Sun Mar 04, 2018 8:59 pm    Post subject: Reply with quote

Speedo works fine. Fuse OK.

I'm wondering whether it's a problem with the motor, or with the spoiler control unit underneath the dash...
_________________
1990 964 C4 Cab | Manual | Brilliant Red Metallic
1984 Ferrari Mondial QV Coupe | Manual | Argento Silver + Bordeaux
1984 924 2.0 N/A Black | Black
Ex 2004 996 C4S | Manual | Seal Grey
Ex 1991 TVR 450 SEAC | Manual | Cureton Green
 
  
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Chief
Magny-Cours


Joined: 16 Sep 2010
Posts: 2669
Location: The Middle lands


PostPosted: Sun Mar 04, 2018 9:21 pm    Post subject: Reply with quote

Have you checked the micro switches?
_________________
- 964 C2 The Red Baron - 914 2.0 Project Blue Book - Cayman S Sport Edition Amber Alert! -
Instagram - @chiefporsche
 
  
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thesmithsUK
Monza


Joined: 07 Dec 2014
Posts: 229
Location: Cornwall


PostPosted: Mon Mar 12, 2018 8:04 pm    Post subject: Reply with quote

The motor is toast. Tested it via a spare 12V battery - nothing.

I know you can open them up and refurbish, but life's short...

So I've bought a very reasonably-priced, used replacement from a fellow Rennlist-er in the US.

Should be here in a couple of weeks - will report back!
_________________
1990 964 C4 Cab | Manual | Brilliant Red Metallic
1984 Ferrari Mondial QV Coupe | Manual | Argento Silver + Bordeaux
1984 924 2.0 N/A Black | Black
Ex 2004 996 C4S | Manual | Seal Grey
Ex 1991 TVR 450 SEAC | Manual | Cureton Green
 
  
View user's profile Send private message
   
thesmithsUK
Monza


Joined: 07 Dec 2014
Posts: 229
Location: Cornwall


PostPosted: Sun Mar 18, 2018 11:51 am    Post subject: Reply with quote

Just fitted the replacement motor - bingo, works perfectly!
_________________
1990 964 C4 Cab | Manual | Brilliant Red Metallic
1984 Ferrari Mondial QV Coupe | Manual | Argento Silver + Bordeaux
1984 924 2.0 N/A Black | Black
Ex 2004 996 C4S | Manual | Seal Grey
Ex 1991 TVR 450 SEAC | Manual | Cureton Green
 
  
View user's profile Send private message
   
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