924Board.org

redporsche · Joined: 07 Feb 2013 Posts: 14 Location: Houston, TX USA

I have a 79 924 with a starting problem. Sometimes it starts sometimes is won't. Right now it won't. First time it happened I found one of the vacuum lines off. Connected it up and started right up. Well I replaced all the vacuum lines and it started great. Now no start. I pulled one of the spark plugs and I could smell fresh gas from it. So I'm thinking no spark. My question is what is the "Switch unit" and what does it do? Thanks for the help.
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the_mad_electrician · Joined: 16 Nov 2009 Posts: 1073 Location: Central Georgia

My 77 was doing that, turned out to be a bad transistorized ignition. I bought a used MSD 6A of Craig's list and never had that problem again.
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81 924 N/A

2004 Ranger "Edge"

2005 Mazda 6

the_mad_electrician · Joined: 16 Nov 2009 Posts: 1073 Location: Central Georgia

My 77 was doing that, turned out to be a bad transistorized ignition. I bought a used MSD 6A of Craig's list and never had that problem again.
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81 924 N/A

2004 Ranger "Edge"

2005 Mazda 6

Ozzie · Posted: Fri Feb 08, 2013 7:14 am Post subject:

ign switch is a common fault.
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Porsche 924 1984 (UK import) NA
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Engineer of Electro/Mechanical Systems Maintenance

redporsche · Joined: 07 Feb 2013 Posts: 14 Location: Houston, TX USA

Well, to make the story short it started last Saturday. Don't know why it just did. So I let it run to warm up. Turned it off and went about my business for that day. Jumped in it later and it started again and again on Sunday. I'm still recovering from where I was beating my head against the garage door.
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I love gereatric rock.