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D5RSR
Trainee


Joined: 18 Aug 2014
Posts: 73
Location: Leeds


PostPosted: Mon May 28, 2018 1:41 pm    Post subject: Alternator cable replacement ongoing. What’s this I’ve f Reply with quote

Fixing/ replacing the alternator cable as I’ve got the hot start problem, all going ok, alternator and air con compressor out so far, but I’ve found a connector/ sensor dangling down. Right hand side between manifolds.
Any idea what it is and where it goes?

Thanks
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Darren

997.1 C2S
Leeds
 



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deMort
Shanghai


Joined: 21 Mar 2015
Posts: 4910
Location: Brighton


PostPosted: Mon May 28, 2018 3:15 pm    Post subject: Reply with quote

Thats the engine compartment temp sensor .. should fit into a C shaped hole in the right hand inlet mainifold .

Cant find a 997 picture but its here on a 996
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D5RSR
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Joined: 18 Aug 2014
Posts: 73
Location: Leeds


PostPosted: Mon May 28, 2018 3:37 pm    Post subject: Reply Reply with quote

Thank-you.

Not a lot of room in there, cable nearly out, just can’t work out how those ‘kin clips come apart.
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Darren

997.1 C2S
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deMort
Shanghai


Joined: 21 Mar 2015
Posts: 4910
Location: Brighton


PostPosted: Mon May 28, 2018 4:00 pm    Post subject: Reply with quote

Not sure if anything in the picture helps .. its when i last changed a startermotor .
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D5RSR
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Joined: 18 Aug 2014
Posts: 73
Location: Leeds


PostPosted: Mon May 28, 2018 4:42 pm    Post subject: Cable out Reply with quote

Well the cable is out, side cutters saw the clips off.
It doesn’t look too bad now I’ve stripped back the insulation. A bit dark on the solenoid bit. I’ll Try a load test on it later this’ll week, could just re-shrink it and put it back or while it’s off just bang a new one in.

Seen a cable on eBay for £90, anyone seen a better price? What about starter motors? Do I swap it now while it in bits or just try the cable?

Thanks
Darren.
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Darren

997.1 C2S
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deMort
Shanghai


Joined: 21 Mar 2015
Posts: 4910
Location: Brighton


PostPosted: Mon May 28, 2018 5:01 pm    Post subject: Reply with quote

Its the bit of the cable in the connection you cant see that causes the issue .

Lets put it this way .. that black smear looks to me like melted plastic .. so its getting pretty dam hot on cranking which would indicate its faulty .

Also look at the colour of the copper going into the crimp .. its been hot .

Its not a big job to change the starter motor so you dont have to do it now .. but if its original then it will need doing at some point .. it will spin over faster with a new one as well .


Clips ? are they cable ties ? if so then cutting is the only way to remove them .
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D5RSR
Trainee


Joined: 18 Aug 2014
Posts: 73
Location: Leeds


PostPosted: Mon May 28, 2018 5:39 pm    Post subject: Hot Reply with quote

Yes it is melted plastic and the copper is black indicating heat.
I’ll swap it out and see how it goes.

Thanks for your input.

Darren.
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997.1 C2S
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Matt Seabrook
Monza


Joined: 27 Apr 2014
Posts: 176
Location: Cornwall


PostPosted: Mon May 28, 2018 5:52 pm    Post subject: Reply with quote

A voltage drop test end to end on the cable under start conditions is the best way to prove what is wrong if you can get on it that is.
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Stever845
Monza


Joined: 10 Aug 2016
Posts: 154
Location: Oxfordshire

2005 Porsche 997 Carrera 2S

PostPosted: Mon May 28, 2018 7:35 pm    Post subject: Reply with quote

Pop Corn
Need to do this myself sometime
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997.1 C2S Atlas Grey,Manual,sport chrono,pasm,
Mini Cooper S JCW
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monster
Hockenheim


Joined: 04 Sep 2010
Posts: 746
Location: Bournemouth


PostPosted: Mon May 28, 2018 11:44 pm    Post subject: Reply with quote

deMort wrote:
Thats the engine compartment temp sensor .. should fit into a C shaped hole in the right hand inlet mainifold .

Cant find a 997 picture but its here on a 996


I had this fall out of mine a year or two ago and it was dangling by the manifold and kept turning the engine compartment fan on - used to come on for ten mins after turning engine off even - until I worked out why and found this sensor hanging loose - slotted it back in its housing and constant fan running has stopped.
 
  
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monster
Hockenheim


Joined: 04 Sep 2010
Posts: 746
Location: Bournemouth


PostPosted: Mon May 28, 2018 11:46 pm    Post subject: Re: Cable out Reply with quote

D5RSR wrote:
Well the cable is out, side cutters saw the clips off.
It doesn’t look too bad now I’ve stripped back the insulation. A bit dark on the solenoid bit. I’ll Try a load test on it later this’ll week, could just re-shrink it and put it back or while it’s off just bang a new one in.

Seen a cable on eBay for £90, anyone seen a better price? What about starter motors? Do I swap it now while it in bits or just try the cable?

Thanks
Darren.


Years ago I had the hot start issue your suffering, I changed the cable and that improved it slightly, changed the starter motor and that cured it totally.

It could be either....
 
  
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D5RSR
Trainee


Joined: 18 Aug 2014
Posts: 73
Location: Leeds


PostPosted: Thu May 31, 2018 11:22 am    Post subject: New cable Reply with quote

New cable ready to go, photo of part number and those b*****d clips for reference.
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997.1 C2S
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deMort
Shanghai


Joined: 21 Mar 2015
Posts: 4910
Location: Brighton


PostPosted: Thu May 31, 2018 6:34 pm    Post subject: Reply with quote

Aghhhh yes .. the second picture down shows the clip you undo to get the cable out of it then in the center there is a small hole .. you hook the tag in the hole and pull it then you can remove the clip ... some are actually the reverse .. you press it .

I agree though .. they can be a right pain at times .

Good job though , its not the easiest thing in the world to replace .


Just for info .. it cant be done on a tip for any one reading .. its an engine out job on those .
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CarreraMonkey
Watkins Glen


Joined: 02 Sep 2013
Posts: 2000
Location: Silverstone (ish)

2007 Porsche 997 Carrera 4S

PostPosted: Sat Jun 02, 2018 12:29 pm    Post subject: Reply with quote

Hi Darren.

I'm looking to swap this cable out as I need to pull the alternator anyway. I've had hot start issues since owning the car.

Can you recommend a tutorial or how to guide on how to do it please?

Also does the car need to be up in the air on a 2 poster or ramps, or can it all be done from above through the engine bay?

Thanks for your advice.

Matt
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D5RSR
Trainee


Joined: 18 Aug 2014
Posts: 73
Location: Leeds


PostPosted: Sat Jun 02, 2018 2:02 pm    Post subject: Guide Reply with quote

I used this as a guide:

https://www.6speedonline.com/forums/997/289189-3-8s-how-replace-alternator-cable.html

It’s accurate and well written, thanks to the author.

I managed it with the drivers rear jacked up on a stand. I could wriggle under to remove the under tray (4 torx bolts) and then get to the connection box.

It’s not difficult just a bit awkward getting alternator in and out, the rear bolt of the air compressor and working out the plastic clips. I ended up breaking them off as new ones come on new cable.

Order a new serp belt while your at it (£17 for a Conti Belt off carparts4less)

Cheers
Darren.
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Darren

997.1 C2S
Leeds
 
  
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D5RSR
Trainee


Joined: 18 Aug 2014
Posts: 73
Location: Leeds


PostPosted: Sat Jun 02, 2018 2:04 pm    Post subject: Cable Reply with quote

Cable was £90 from OPC Leeds.
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Darren

997.1 C2S
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CarreraMonkey
Watkins Glen


Joined: 02 Sep 2013
Posts: 2000
Location: Silverstone (ish)

2007 Porsche 997 Carrera 4S

PostPosted: Sat Jun 02, 2018 3:02 pm    Post subject: Re: Guide Reply with quote

D5RSR wrote:
I used this as a guide:

https://www.6speedonline.com/forums/997/289189-3-8s-how-replace-alternator-cable.html

It’s accurate and well written, thanks to the author.

I managed it with the drivers rear jacked up on a stand. I could wriggle under to remove the under tray (4 torx bolts) and then get to the connection box.

It’s not difficult just a bit awkward getting alternator in and out, the rear bolt of the air compressor and working out the plastic clips. I ended up breaking them off as new ones come on new cable.

Order a new serp belt while your at it (£17 for a Conti Belt off carparts4less)

Cheers
Darren.

Great! Had seen this before! Removing the a/c compressor sounds a bit tricky, is that torq at the back hard to get at?
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CarreraMonkey
Watkins Glen


Joined: 02 Sep 2013
Posts: 2000
Location: Silverstone (ish)

2007 Porsche 997 Carrera 4S

PostPosted: Sat Jun 02, 2018 3:03 pm    Post subject: Re: Cable Reply with quote

D5RSR wrote:
Cable was £90 from OPC Leeds.


Ordered genuine one from 9apart. Thumb
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D5RSR
Trainee


Joined: 18 Aug 2014
Posts: 73
Location: Leeds


PostPosted: Sat Jun 02, 2018 3:28 pm    Post subject: Re: Guide Reply with quote

CarreraMonkey wrote:
D5RSR wrote:
I used this as a guide:

https://www.6speedonline.com/forums/997/289189-3-8s-how-replace-alternator-cable.html

It’s accurate and well written, thanks to the author.

I managed it with the drivers rear jacked up on a stand. I could wriggle under to remove the under tray (4 torx bolts) and then get to the connection box.

It’s not difficult just a bit awkward getting alternator in and out, the rear bolt of the air compressor and working out the plastic clips. I ended up breaking them off as new ones come on new cable.

Order a new serp belt while your at it (£17 for a Conti Belt off carparts4less)

Cheers
Darren.

Great! Had seen this before! Removing the a/c compressor sounds a bit tricky, is that torq at the back hard to get at?


Not really difficult, just a bit of guess work.

Mines all back together now, just waiting for the new serp belt to arrive.
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Darren

997.1 C2S
Leeds
 
  
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CarreraMonkey
Watkins Glen


Joined: 02 Sep 2013
Posts: 2000
Location: Silverstone (ish)

2007 Porsche 997 Carrera 4S

PostPosted: Sat Jun 02, 2018 3:55 pm    Post subject: Re: Guide Reply with quote

D5RSR wrote:
CarreraMonkey wrote:
D5RSR wrote:
I used this as a guide:

https://www.6speedonline.com/forums/997/289189-3-8s-how-replace-alternator-cable.html

It’s accurate and well written, thanks to the author.

I managed it with the drivers rear jacked up on a stand. I could wriggle under to remove the under tray (4 torx bolts) and then get to the connection box.

It’s not difficult just a bit awkward getting alternator in and out, the rear bolt of the air compressor and working out the plastic clips. I ended up breaking them off as new ones come on new cable.

Order a new serp belt while your at it (£17 for a Conti Belt off carparts4less)

Cheers
Darren.

Great! Had seen this before! Removing the a/c compressor sounds a bit tricky, is that torq at the back hard to get at?


Not really difficult, just a bit of guess work.

Mines all back together now, just waiting for the new serp belt to arrive.


The weird thing is the belt was only replaced a month ago during a pretty hefty service. Ever since I've had the car serviced and various parts replaced, things keep failing!

Sods law I guess! Question
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