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Pip1968
Suzuka


Joined: 26 Oct 2009
Posts: 1186
Location: Blighty


PostPosted: Sun Feb 24, 2019 3:53 pm    Post subject: 996 GT3 starter motor replacement a DiY job? Reply with quote

Pretty much as per the post title. I have had a look online which shows a 996 starter motor being replaced but having had a look see I cannot even see where it is. Apparently it is hidden behind the throttle body (on the straight 996). Do I need to remove the alternator too or is the GT3 an engine out job to replace the starter motor??

Any tip top tips or advice most appreciated.

Pip

* spell checker overridden to change title to DiY.

Last edited by Pip1968 on Sun Feb 24, 2019 9:24 pm; edited 1 time in total
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 17057
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sun Feb 24, 2019 4:00 pm    Post subject: Reply with quote

Is the title 'day job' or meant to be diy job?

It's doable with the alternator in place on the standard car. I did a write-up here: http://911uk.com/viewtopic.php?t=101392
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2000 Manual 996 C4 Arctic Silver Convertible


 
  
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NXI20
Paul Ricard


Joined: 02 Feb 2008
Posts: 3384
Location: South Bucks

2004 Porsche 996 GT3 Mk2

PostPosted: Sun Feb 24, 2019 4:11 pm    Post subject: Reply with quote

The starter on the GT3 isn't in the same place as on the M96 which is probably why you can't see it!

You need to get the rear of the car as high off the ground as possible and then you can access the starter by working underneath; remove the undertray & you'll see it's high up on the right-hand side of the car on the back of the bellhousing. It is awkward to get to without using a ramp but it can be done.
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Nick

2004 GT3 CS in Atlas Grey with too many mods to list!
1995 993 GT2 recreation in Polar Silver
2010 GT3 CS in Riviera Blue Smile
1978 Carrera SC in Red (for sale)
 
  
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Pip1968
Suzuka


Joined: 26 Oct 2009
Posts: 1186
Location: Blighty


PostPosted: Sun Feb 24, 2019 4:33 pm    Post subject: Reply with quote

Thanks Nick. To be honest with you I was really surprised there were no write ups anywhere online for a 996 GT3 starter motor replacement.

I might have to try and cobble something together.

Pip

Ps thank you to Alex too Wink
 
  
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NXI20
Paul Ricard


Joined: 02 Feb 2008
Posts: 3384
Location: South Bucks

2004 Porsche 996 GT3 Mk2

PostPosted: Sun Feb 24, 2019 11:06 pm    Post subject: Reply with quote

Forgot to ask why you're replacing it. Mine was replaced at about 125K miles when it came out still working but looking like a ball of rust. I subsequently had a complete failure to turn over a year later which wasn't the motor at all but turned out to be the main cable between the battery & the starter having corroded away internally; looked fine but zero current got through.
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Nick

2004 GT3 CS in Atlas Grey with too many mods to list!
1995 993 GT2 recreation in Polar Silver
2010 GT3 CS in Riviera Blue Smile
1978 Carrera SC in Red (for sale)
 
  
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Diggermeister
Nürburgring


Joined: 26 May 2015
Posts: 467



PostPosted: Mon Feb 25, 2019 8:53 am    Post subject: Reply with quote

NXI20 wrote:
I subsequently had a complete failure to turn over a year later which wasn't the motor at all but turned out to be the main cable between the battery & the starter having corroded away internally; looked fine but zero current got through.
I had exactly the same thing on my less than 30k miles 997 GT3. JZM kindly replaced the item under their warranty. These do seem to be prone to failure and do exhibit a very similar symptom to other electrical issues, such as duff battery, starter or alternator.

IIRC, my windows went a bit haywire when locking the car, which was the first outward sign. Then, when I got back in it wouldn't start.
 
  
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kingston
Suzuka


Joined: 09 Jun 2010
Posts: 1002



PostPosted: Mon Feb 25, 2019 8:51 pm    Post subject: Reply with quote

Mines sometimes won't fire and takes a couple of attempts of turning the key for it to come into life.

Is that a sign of the cable dying? How much is said cable and is it easy to replace?
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NXI20
Paul Ricard


Joined: 02 Feb 2008
Posts: 3384
Location: South Bucks

2004 Porsche 996 GT3 Mk2

PostPosted: Mon Feb 25, 2019 9:00 pm    Post subject: Reply with quote

I had no symptoms at all; it just failed to start one day. The cable isn't all that expensive but it can be a couple of hours to fit it.

Your symptoms sound more like the dreaded internal breakup of the ignition switch which can manifest itself in several ways.
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Nick

2004 GT3 CS in Atlas Grey with too many mods to list!
1995 993 GT2 recreation in Polar Silver
2010 GT3 CS in Riviera Blue Smile
1978 Carrera SC in Red (for sale)
 
  
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ontheloop
Monza


Joined: 05 Feb 2012
Posts: 169
Location: Bournemouth


PostPosted: Mon Feb 25, 2019 9:11 pm    Post subject: Reply with quote

I replaced mine at home a couple of years ago, its a pretty easy job. Once you can see where it is and where the terminals and bolts are ...... piece of cake.

You should also replace the bush at the front of the shaft.

I probably have some photos if you are struggling.
 
  
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Pip1968
Suzuka


Joined: 26 Oct 2009
Posts: 1186
Location: Blighty


PostPosted: Mon Feb 25, 2019 10:26 pm    Post subject: Reply with quote

NXI20 wrote:
Forgot to ask why you're replacing it. Mine was replaced at about 125K miles when it came out still working but looking like a ball of rust. I subsequently had a complete failure to turn over a year later which wasn't the motor at all but turned out to be the main cable between the battery & the starter having corroded away internally; looked fine but zero current got through.


To be fair Nick, I think I did ask about refurbishment but nobody seems to have said anything. Since then I have found a company near me that does refurbishments and of course I will look at the earthing cable which seems to crop up as a problem associated with starter motor problems.

At least all options are covered.

Ontheloop, is this a part one can buy separately from Porsche. I don’t suppose you have the part number??

Pip
 
  
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mikem7709
Monza


Joined: 24 Apr 2008
Posts: 206



PostPosted: Sat Mar 02, 2019 10:29 pm    Post subject: Reply with quote

I had mine refurbed for £50 by a local specialist. Easy enough to DIY but like most jobs would take half the time second time around.
 
  
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kingston
Suzuka


Joined: 09 Jun 2010
Posts: 1002



PostPosted: Tue Apr 23, 2019 8:19 am    Post subject: Reply with quote

kingston wrote:
Mines sometimes won't fire and takes a couple of attempts of turning the key for it to come into life.

Is that a sign of the cable dying? How much is said cable and is it easy to replace?


Looks like mine was due to the Earth Strap being dirty/not attached correctly.

Jizm changed the rear top rubber mounts and im guessing the strap wasnt secured down correctly.

So have had this cleaned up/reattached and it seems to be firing all the time now.
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