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Forty Years of the Porsche 924
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 Post subject: Re: Wiring help Birmingham
PostPosted: Mon Feb 04, 2019 5:39 pm 
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Joined: Mon Jan 14, 2019 11:22 pm
Posts: 30
Model: 1983 924
I made a jumper and put a switch in it to run the fuel pump,

Tried it. Managed some splutters again but not much else.

Found a spark plug socket so wiped them Out, they were covered in fuel and oil. Cleaned them up and got a bit more than just a splutter but still wouldn’t run.

Took them out again and cleaned them again. And left them Out so fuel in the pistons could evaporate a bit.

Then tried again.

https://youtu.be/Bvrlai3N_tE

Sparks are flying out the alternator do that’s probably had it. And it overheated so possible thermostat is jammed but the electric fan works.

Oil pressure was good when revved. Dropped on idle but the oil
Is probably pretty horrible now.

But least I know it’s not a lost cause.


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 Post subject: Re: Wiring help Birmingham
PostPosted: Mon Feb 04, 2019 5:46 pm 
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Joined: Mon Jan 04, 2010 11:24 pm
Posts: 16255
Location: Gloucester
Good effort, encouraging when it is alive :clap:

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To travel hopefully is a better thing than to arrive - RLS

1984 924 N/A RUBY RED METALLIC - full service history, every MOT, 3 previous owners.
1986 924S GUARDS RED - previous owner from 1990.
1988 924S Guards Red - sold
1984 924 N/A Black - sold
1980 924 LE MANS#1 - ex National prize winner and NEC exhibit 2011 & 2016. - sold
1980 924 LE MANS#2 - Saved from 10 years as a garden ornament - sold
1977 924 Martini - sold


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 Post subject: Re: Wiring help Birmingham
PostPosted: Sun Feb 10, 2019 5:31 pm 
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Joined: Mon Jan 14, 2019 11:22 pm
Posts: 30
Model: 1983 924
Image

The black wire on this is snapped. Maybe why the red cable has been added.

Is the black wire to charge the battery or something?

When the engine was running. Sparks were going everywhere. Maybe it was this black cable touching earth?

Thanks.


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 Post subject: Re: Wiring help Birmingham, gets worse
PostPosted: Sun Feb 10, 2019 8:25 pm 
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Joined: Wed Sep 08, 2010 8:44 pm
Posts: 8557
Location: Birkenhead (UK)
Model: 924 na
I'm more concerned about the green wire.

There should only be two wires going to terminals on the alternator:-

D+ should have a black wire that heads off to to the ignition light (changing colours at every connector on the way!).

B+ is the big red one that heads to the starter (which then goes to battery).

There should also be an earth strap that goes to the alternator bracket on the crankcase.

While you have the alternator off, take the brush/regulator off and check the brushes and slip rings (white plate with two screws and a black thing in the middle). Be aware the regulator has three connections, one through each screw and a leaf-spring "thingy".

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Andy
1983 Silver(ish)/rust n/a manual - Project Candy, SCRAPPED
1982 Guards Red n/a manual - Project 66, SOLD.
1982 Garnet Red n/a manual - Project XLE (532 licensed, 1430 sorn'd)
1983 White n/a manual - Mr White Returns
2002 Berlingo Multispace 1.9D, 189,000 miles, daily driver


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 Post subject: Re: Wiring help Birmingham, gets worse
PostPosted: Sun Feb 10, 2019 10:59 pm 
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Joined: Mon Jan 14, 2019 11:22 pm
Posts: 30
Model: 1983 924
dd924 wrote:
I'm more concerned about the green wire.

There should only be two wires going to terminals on the alternator:-

D+ should have a black wire that heads off to to the ignition light (changing colours at every connector on the way!).

B+ is the big red one that heads to the starter (which then goes to battery).

There should also be an earth strap that goes to the alternator bracket on the crankcase.

While you have the alternator off, take the brush/regulator off and check the brushes and slip rings (white plate with two screws and a black thing in the middle). Be aware the regulator has three connections, one through each screw and a leaf-spring "thingy".


The green wire doesn’t actually go anywhere. I’ll take that off.

The black wire I’ll have to try and replace it.

Spun up the alternator with a electric drill and it’s actually working fine. The earth strap was loose and with the black wire all bare I’m hoping that was the cause of the sparks.

Will try to put it all back together next week and see what happens.


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 Post subject: Re: Wiring help Birmingham, gets worse
PostPosted: Mon Feb 11, 2019 8:44 am 
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Committee - Publications Editor
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Joined: Tue Sep 30, 2008 12:24 pm
Posts: 21311
Location: Ormskirk, Lancashire
Model: Turbo S1
I am afraid this is rather more technical than this section is allowed to get.


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Simply put this is an area for new members to ask basic techncial questions before joining the club.

A new member will be allowed one or two basic tech questions, no more, and threads will be moved to the relevant members only technical section after a 5-7 days.


We offer a fabulous membership package that includes full technical access and an award winning magazine.

Hope to see you join up soon. :hope:

www.porsche924.co.uk/membership

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