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Stoddy
Trainee
Joined: 13 Sep 2019
Posts: 79
Location: Wye Valley
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 Posted: Mon Nov 04, 2019 9:35 pm Post subject: Strange starter motor sound when hot.
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Hi,
I noticed during my lovely Sunday drive, that on re starting the car after a short stop, the starter motor sounded slightly odd. It’s a sort of choking sound when the car is hot.
When it’s cold, no problem, it’s just when it’s hot.
Is the starter about to give up? Or is it maybe an earthing issue?
Any thoughts gratefully received!
Stoddy 
_________________
The world is flat
2005 997.1 3.6 (Rufus the Red)
Restoring THE COLONEL, 1973 914.
X 996 C2 coupe (Henry)
X 944 S2 Cab (Miller)
X 3.2 Carrera (Gordon)
X 3.4 Cayman (George)
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maldren
Suzuka
Joined: 07 Oct 2016
Posts: 1198
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| Posted: Tue Nov 05, 2019 5:29 pm Post subject:
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Alex took his apart and re-greased the rear bearing to stop a squeal that mine had too.
I took mine apart and found that the rear bearing grease had dried up. I took the motor apart and also re-greased the gearing but decided that I didn't want to have to do it again so I fitted a new motor (courtesy Eurocarparts) for about £130 exchange.
It's not too bad a job as long as you have a set of wobble bars as socket set extensions.
_________________
Mike
2003 996.2 C2 Coupe Arctic Silver
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Stoddy
Trainee
Joined: 13 Sep 2019
Posts: 79
Location: Wye Valley
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| Posted: Tue Nov 05, 2019 6:09 pm Post subject:
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Oh ok, yeah, I guess the sound could be a bearing? Well I reckon for that price, I’ll exchange it.
What’s a wobble bar by the way Mike?
Thanks for the info!
Rich.
_________________
The world is flat
2005 997.1 3.6 (Rufus the Red)
Restoring THE COLONEL, 1973 914.
X 996 C2 coupe (Henry)
X 944 S2 Cab (Miller)
X 3.2 Carrera (Gordon)
X 3.4 Cayman (George)
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fot0
Newbie
Joined: 03 Apr 2018
Posts: 35
Location: Thames Valley
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| Posted: Tue Nov 05, 2019 9:26 pm Post subject:
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"choking" as in lethargic or difficult to start when hot? More likely to be positive cable running from jump post connecting to starter and alternator. The cable eventually breaks down with age and heat.
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Stoddy
Trainee
Joined: 13 Sep 2019
Posts: 79
Location: Wye Valley
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| Posted: Tue Nov 05, 2019 10:39 pm Post subject:
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Ooh, that sounds bang on!
Where’s the jump post??
_________________
The world is flat
2005 997.1 3.6 (Rufus the Red)
Restoring THE COLONEL, 1973 914.
X 996 C2 coupe (Henry)
X 944 S2 Cab (Miller)
X 3.2 Carrera (Gordon)
X 3.4 Cayman (George)
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maldren
Suzuka
Joined: 07 Oct 2016
Posts: 1198
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| Posted: Wed Nov 06, 2019 8:19 am Post subject:
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These are what I bought:
The extensions have a curved profile that allows them to be used at an angle, more easy to control than UJs and ideal for working around Porsche (and other) engine bays.
_________________
Mike
2003 996.2 C2 Coupe Arctic Silver
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Stoddy
Trainee
Joined: 13 Sep 2019
Posts: 79
Location: Wye Valley
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| Posted: Wed Nov 06, 2019 9:49 am Post subject:
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Brilliant thanks!
Rich.
_________________
The world is flat
2005 997.1 3.6 (Rufus the Red)
Restoring THE COLONEL, 1973 914.
X 996 C2 coupe (Henry)
X 944 S2 Cab (Miller)
X 3.2 Carrera (Gordon)
X 3.4 Cayman (George)
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fot0
Newbie
Joined: 03 Apr 2018
Posts: 35
Location: Thames Valley
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| Posted: Wed Nov 06, 2019 9:33 pm Post subject:
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| Stoddy wrote: | Ooh, that sounds bang on!
Where’s the jump post?? |
As you look at engine - top right. Plastic rectangle box that opens to reveal the +jump post. This is where the starter cable terminates.
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Stoddy
Trainee
Joined: 13 Sep 2019
Posts: 79
Location: Wye Valley
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| Posted: Wed Nov 06, 2019 9:36 pm Post subject:
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Great stuff, I’ll try and look tomorrow.
Cheers!
Rich. 👍👍🤘
_________________
The world is flat
2005 997.1 3.6 (Rufus the Red)
Restoring THE COLONEL, 1973 914.
X 996 C2 coupe (Henry)
X 944 S2 Cab (Miller)
X 3.2 Carrera (Gordon)
X 3.4 Cayman (George)
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Stoddy
Trainee
Joined: 13 Sep 2019
Posts: 79
Location: Wye Valley
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| Posted: Sun Nov 10, 2019 2:04 pm Post subject:
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Ok, can’t see any sign of cable breaking down on the jump post, I guess it’s more likely that it’s down near the motor it’s self?
Rich.
_________________
The world is flat
2005 997.1 3.6 (Rufus the Red)
Restoring THE COLONEL, 1973 914.
X 996 C2 coupe (Henry)
X 944 S2 Cab (Miller)
X 3.2 Carrera (Gordon)
X 3.4 Cayman (George)
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fot0
Newbie
Joined: 03 Apr 2018
Posts: 35
Location: Thames Valley
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| Posted: Sun Nov 10, 2019 7:57 pm Post subject:
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It won't be visibly damaged, but sounds similar to an issue I had. I suspect where the copper cable is joined/crimped at the terminals it will eventually lose conductivity with constant heating and cooling. An indie should be able to test for you with a multimeter.
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Stoddy
Trainee
Joined: 13 Sep 2019
Posts: 79
Location: Wye Valley
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| Posted: Sun Nov 10, 2019 11:01 pm Post subject:
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Ok cheers. I’ll have to get it sorted as it very nearly didn’t re start today when hot after I’d stopped.
In Manchester now.
Stoddy
_________________
The world is flat
2005 997.1 3.6 (Rufus the Red)
Restoring THE COLONEL, 1973 914.
X 996 C2 coupe (Henry)
X 944 S2 Cab (Miller)
X 3.2 Carrera (Gordon)
X 3.4 Cayman (George)
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kurlykris
Magny-Cours
Joined: 30 Jun 2014
Posts: 2576
Location: Warwickshire
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| Posted: Sun Nov 10, 2019 11:24 pm Post subject:
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If I was remaking the joint/crimp lug or replacing the cable ( as an electrician by trade ) I would tin ( solder) the stripped cable end, before crimping on the new lug, then heat the new joint/lug up with a blowtorch and run some more solder into the joint, that way it will never happen again in future 
_________________
1998 996.1 C2 3.4 with "Aerokit Cup"
2006 Boxster S sport chrono
2010 Mercedes E350 AMG Sport
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77szymon
Spa-Francorchamps
Joined: 14 Mar 2018
Posts: 319
Location: UK
2003 Porsche 996 Carrera 4S
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| Posted: Fri Nov 15, 2019 3:32 pm Post subject:
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I'm not sure if you have same problem as mine was but..... mine hot starting end up with £4000 bill if your car is manual take out air box and spin engine any resistance in the same place NOT GOOD.
If you need any more info ask, I'm from Rochdale if not far you can come by just send me PM.
_________________
2003 Porsche 911 996 c4s
1988 BMW 635csi Highline - waiting for full restoration
1999 BMW e36 328i Cabrio - still not finished project.....
2011 Mercedes S350L - SOLD
2004 Audi a2 1.4 tdi - I can't stress enough how good these cars are
̶2̶0̶1̶2̶ ̶M̶e̶r̶c̶e̶d̶e̶s̶ ̶C̶2̶2̶0̶ ̶c̶d̶i̶ ̶E̶s̶t̶a̶t̶e̶ ̶A̶M̶G̶ ̶S̶p̶o̶r̶t̶ ̶P̶l̶u̶s̶ ̶P̶a̶c̶k̶ ̶-̶ ̶w̶i̶f̶e̶
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Stoddy
Trainee
Joined: 13 Sep 2019
Posts: 79
Location: Wye Valley
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| Posted: Sat Nov 16, 2019 1:27 pm Post subject:
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Sent you a pm mate.
_________________
The world is flat
2005 997.1 3.6 (Rufus the Red)
Restoring THE COLONEL, 1973 914.
X 996 C2 coupe (Henry)
X 944 S2 Cab (Miller)
X 3.2 Carrera (Gordon)
X 3.4 Cayman (George)
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77szymon
Spa-Francorchamps
Joined: 14 Mar 2018
Posts: 319
Location: UK
2003 Porsche 996 Carrera 4S
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| Posted: Sat Nov 16, 2019 1:38 pm Post subject:
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I don't have any new messages......
_________________
2003 Porsche 911 996 c4s
1988 BMW 635csi Highline - waiting for full restoration
1999 BMW e36 328i Cabrio - still not finished project.....
2011 Mercedes S350L - SOLD
2004 Audi a2 1.4 tdi - I can't stress enough how good these cars are
̶2̶0̶1̶2̶ ̶M̶e̶r̶c̶e̶d̶e̶s̶ ̶C̶2̶2̶0̶ ̶c̶d̶i̶ ̶E̶s̶t̶a̶t̶e̶ ̶A̶M̶G̶ ̶S̶p̶o̶r̶t̶ ̶P̶l̶u̶s̶ ̶P̶a̶c̶k̶ ̶-̶ ̶w̶i̶f̶e̶
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jezgreen911
Nürburgring
Joined: 12 Dec 2012
Posts: 435
Location: Bucks
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| Posted: Sat Nov 16, 2019 2:43 pm Post subject:
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| 77szymon wrote: | I'm not sure if you have same problem as mine was but..... mine hot starting end up with £4000 bill if your car is manual take out air box and spin engine any resistance in the same place NOT GOOD.
If you need any more info ask, I'm from Rochdale if not far you can come by just send me PM. |
Can you share your experience for the greater good?
_________________
2003 996 C2
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77szymon
Spa-Francorchamps
Joined: 14 Mar 2018
Posts: 319
Location: UK
2003 Porsche 996 Carrera 4S
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| Posted: Sat Nov 16, 2019 5:56 pm Post subject:
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sure...
my problem strat something in 2017 with hot engine start, I did all starter/alternator/battery/connections etc. then I took engine off car for more work put it back together and "hot" problem did not disappear, only on hot engine cold was ok, so I took my car on 1000 mile trip and I think that was too much for it as "hot" problem become also "cold" start problem, so on July engine completely seized after hard pushing day before, what I do connecting with it and I could be wrong but if you try spin engine with spanner mine engine was half way easy and another half difficult every time same place so my conclusion is this depends in what place engine stops either it is easy to start or difficult and it shows that engine is at fault in my case crank bearings was shot dead and I was LUCKY it did not start only seized.
This theory could be confirmed by more professional then me guys on this lovely forum.
my short story:
911uk.com/viewtopic.php?t=135923&highlight=
_________________
2003 Porsche 911 996 c4s
1988 BMW 635csi Highline - waiting for full restoration
1999 BMW e36 328i Cabrio - still not finished project.....
2011 Mercedes S350L - SOLD
2004 Audi a2 1.4 tdi - I can't stress enough how good these cars are
̶2̶0̶1̶2̶ ̶M̶e̶r̶c̶e̶d̶e̶s̶ ̶C̶2̶2̶0̶ ̶c̶d̶i̶ ̶E̶s̶t̶a̶t̶e̶ ̶A̶M̶G̶ ̶S̶p̶o̶r̶t̶ ̶P̶l̶u̶s̶ ̶P̶a̶c̶k̶ ̶-̶ ̶w̶i̶f̶e̶
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Stoddy
Trainee
Joined: 13 Sep 2019
Posts: 79
Location: Wye Valley
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| Posted: Sat Nov 16, 2019 6:07 pm Post subject:
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Cool man, that’s really useful info. Why don’t you just post those reply’s on the forum, that’s what it’s there for I guess!
I’m in Manchester till December working, I’ll try and hook up at some point, though I’m home most weekends.
Rich.
_________________
The world is flat
2005 997.1 3.6 (Rufus the Red)
Restoring THE COLONEL, 1973 914.
X 996 C2 coupe (Henry)
X 944 S2 Cab (Miller)
X 3.2 Carrera (Gordon)
X 3.4 Cayman (George)
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