Notices
964 Forum 1989-1994
Sponsored by:
Sponsored by:

90 C2 spoiler/speedo probs!!

Thread Tools
 
Search this Thread
 
Old Oct 18, 2011 | 05:22 PM
  #1  
fuch's Avatar
fuch
Thread Starter
Rennlist Member
 
Joined: Oct 2010
Posts: 984
Likes: 1
From: Naphill
Default 90 C2 spoiler/speedo probs!!

Hi guys/girls

I've got a 1990 C2 and the speedo only starts working after driving for 15/20 mins(new&old speedo) the spoiler did work when it wanted too but now its given up so far I have...

new speedo

Re solder dry joints on back of clock

Check plugs under seat

Which do you think is next on the check list??

Sensor on gearbox?

Abs relay in front trunk/boot

BIG HAMMER!!

Thanks

Last edited by fuch; Oct 18, 2011 at 05:49 PM.
Reply
Old Oct 18, 2011 | 05:31 PM
  #2  
sschultze09's Avatar
sschultze09
Racer
 
Joined: May 2011
Posts: 373
Likes: 0
From: Minneapolis MN.
Default

Abs relay in front trunk/boot
part number 928 615 124 01 and is located in the front fuse box. Relay #34 I believe
That was my issue.
Alot of posts on here with the same problem.
Reply
Old Oct 18, 2011 | 05:44 PM
  #3  
fuch's Avatar
fuch
Thread Starter
Rennlist Member
 
Joined: Oct 2010
Posts: 984
Likes: 1
From: Naphill
Default

Thanks for the reply

Abs relay...check!!...

Did yours do the work after the 15/20 min drive thing?
Reply
Old Oct 18, 2011 | 06:18 PM
  #4  
sschultze09's Avatar
sschultze09
Racer
 
Joined: May 2011
Posts: 373
Likes: 0
From: Minneapolis MN.
Default

Yes, I replaced the speed sensor and another relay first but it was the abs relay.
Do a search for "1993 911 speedo stops working" alot of usefull information on this thread about your problem.
Good Luck!
Reply
Old Oct 19, 2011 | 12:06 AM
  #5  
PNine64's Avatar
PNine64
Pro
 
Joined: Jun 2009
Posts: 748
Likes: 8
From: Dayton, OH
Default

I had the same issue. The relay didn't just "go" but gradually gave out to where there was finally nothing. A hundred bucks or so and about five minutes and it was all squared away.
Reply
Old Oct 19, 2011 | 05:10 AM
  #6  
Blown Away's Avatar
Blown Away
Instructor
 
Joined: Jan 2008
Posts: 109
Likes: 1
From: London
Default

I had the similar problem but I found speedo would occasionally stop working. The speedo and rear fin are linked as you know. On my 1990 C2, there is the Pulse Sender on the back of the speedo or tachometer (can't remember which) part no 964 606 210 01. Replacing that has solved it.

Rob.
Reply
Old Oct 19, 2011 | 05:58 AM
  #7  
fuch's Avatar
fuch
Thread Starter
Rennlist Member
 
Joined: Oct 2010
Posts: 984
Likes: 1
From: Naphill
Default

Thanks for all you help/ info guys I will leave the hammer in the toolbox for now!!
Reply
Old Oct 19, 2011 | 09:20 AM
  #8  
fuch's Avatar
fuch
Thread Starter
Rennlist Member
 
Joined: Oct 2010
Posts: 984
Likes: 1
From: Naphill
Default

It's not the abs relay.... Boo!!

I'm moving on to the pulse sensor next...keep you updated.....
Reply
Rennlist Stories

The Best Porsche Posts for Porsche Enthusiasts

story-0

Stunning Porsche 356A Super GT Speedster Auction Fails to Meet Reserve

 Verdad Gallardo
story-1

Every Era of 911 Owner Explained in One Sentence

 Verdad Gallardo
story-2

Thinking of Buying a Porsche? Do These 10 Things First

 Joe Kucinski
story-3

Pixar Pals Turned Into 1-of-1 Porsches!

 Michael S. Palmer
story-4

Theon Goes Full Carbon Fiber With Stunning New Build

 Verdad Gallardo
story-5

Genius Porsche-Themed Gifts That'll Make Any Dad or Grad Smile

 Joe Kucinski
story-6

10 Used Porsches Are Selling for Way Too Cheap

 Joe Kucinski
story-7

Tuner Is Converting Porsche 911s Into Shooting Brakes

 Verdad Gallardo
story-8

This Coachbuilt Creation Is A Modern Take on the Legendary Porsche 917

 Verdad Gallardo
story-9

Is This Convertible Cayenne A Steal, Or A Returnless Investment?

 Verdad Gallardo
Old Oct 19, 2011 | 10:56 AM
  #9  
sschultze09's Avatar
sschultze09
Racer
 
Joined: May 2011
Posts: 373
Likes: 0
From: Minneapolis MN.
Default

I have my old pulse sensor and pulse sensor relay. I am sure they are good becouse they didnt fix my problem. I could send them to you to try as they are pretty expensive.
Reply
Old Oct 19, 2011 | 04:56 PM
  #10  
fuch's Avatar
fuch
Thread Starter
Rennlist Member
 
Joined: Oct 2010
Posts: 984
Likes: 1
From: Naphill
Default

Thanks for the offer, I've got my sparky poping over in a few days,will see if he can sort it first as I'm in the uk so will pm you if I need bits....thanks again for the kind offer... I like this place!!
Reply
Old Oct 22, 2011 | 01:23 PM
  #11  
fuch's Avatar
fuch
Thread Starter
Rennlist Member
 
Joined: Oct 2010
Posts: 984
Likes: 1
From: Naphill
Default

Fitted a new pulse sensor and speedo now works but still no spoiler so will keep looking... So if you have a early 964 and it runs off the side of the gearbox not off the front hub like a later 964 might be with a check!!...
Reply




All times are GMT -3. The time now is 04:29 AM.

story-0
Stunning Porsche 356A Super GT Speedster Auction Fails to Meet Reserve

Slideshow: One of the rarest Porsche 356 Speedsters ever built has resurfaced, offering a glimpse into a little-known chapter of the model's competition history.

By Verdad Gallardo | 2026-06-15 17:16:00


VIEW MORE
story-1
Every Era of 911 Owner Explained in One Sentence

Slideshow: Every generation of Porsche 911 attracts a different type of enthusiast, and each one comes with its own very specific personality.

By Verdad Gallardo | 2026-06-12 12:49:28


VIEW MORE
story-2
Thinking of Buying a Porsche? Do These 10 Things First

Slideshow: Before you start shopping for your dream Porsche, make sure you've checked these 10 items off your list.

By Joe Kucinski | 2026-06-10 15:28:29


VIEW MORE
story-3
Pixar Pals Turned Into 1-of-1 Porsches!

Slideshow: three Porsche 911s inspired by three iconic Pixar characters!

By Michael S. Palmer | 2026-06-09 17:22:06


VIEW MORE
story-4
Theon Goes Full Carbon Fiber With Stunning New Build

Slideshow: Built around a carbon-bodied 964 and a naturally aspirated 4.0-liter flat-six, this bespoke commission highlights how far the restomod formula has evolved.

By Verdad Gallardo | 2026-06-06 14:41:46


VIEW MORE
story-5
Genius Porsche-Themed Gifts That'll Make Any Dad or Grad Smile

Slideshow: Looking for gift ideas for you Dad or your newest grad? Look no further than these Porsche-themed ideas.

By Joe Kucinski | 2026-06-12 10:37:13


VIEW MORE
story-6
10 Used Porsches Are Selling for Way Too Cheap

Slideshow: These 10 used Porsches offer more driving thrills than their price would suggest.

By Joe Kucinski | 2026-06-03 09:11:13


VIEW MORE
story-7
Tuner Is Converting Porsche 911s Into Shooting Brakes

Slideshow: A Polish Porsche specialist is moving ahead with one of the most unusual 911 conversions in recent memory: a shooting brake version of the 991-generation sports car.

By Verdad Gallardo | 2026-06-01 19:46:47


VIEW MORE
story-8
This Coachbuilt Creation Is A Modern Take on the Legendary Porsche 917

Slideshow: A Porsche Carrera GT has been transformed into a one-off coachbuilt machine that blends analog supercar engineering with styling inspired by the legendary 917 race cars.

By Verdad Gallardo | 2026-06-01 17:06:04


VIEW MORE
story-9
Is This Convertible Cayenne A Steal, Or A Returnless Investment?

Slideshow: A heavily modified Porsche Cayenne convertible with faux wood trim and a long list of flaws recently sold at auction for surprisingly little money.

By Verdad Gallardo | 2026-05-29 18:52:37


VIEW MORE