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 Post subject: porsche924slemans
PostPosted: Sun Jan 12, 2020 11:44 pm 
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Joined: Tue Jun 30, 2015 10:00 am
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Model: 924slemans
Engine starts then cuts out Steve and Malc at the garage, baffled.


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 Post subject: Re: porsche924slemans
PostPosted: Sun Jan 12, 2020 11:56 pm 
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Joined: Sat Dec 01, 2007 1:31 pm
Posts: 19981
Location: Lurking in Preston
Model: 924 Turbo S2
Bit more info might help...

But it's a classic 924 trick, starts on the cold start vale then won't run.

Needs a fuel pressure test to diagnose.

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 Post subject: Re: porsche924slemans
PostPosted: Mon Jan 13, 2020 9:28 am 
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Joined: Mon Jan 04, 2010 11:24 pm
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Location: Gloucester
I think it's an S which means it could be the idle control valve or fuel pressure regulator, or faulty fuel pump, DME relay or blocked fuel filter, needs more information.

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 Post subject: Re: porsche924slemans
PostPosted: Mon Jan 13, 2020 4:18 pm 
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Joined: Mon Jun 17, 2013 11:35 pm
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Location: The little old town of East Grinstead, UK
Model: '83 924 / '80 931
If they are baffled, then they don't understand 924's properly. If it is an 'S' then the injection and ignition system runs Bosch Motronic which is an industry standard of the era.

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 Post subject: Re: porsche924slemans
PostPosted: Mon Jan 13, 2020 5:48 pm 
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Joined: Mon May 18, 2015 7:53 pm
Posts: 1872
Location: Bournville - Land of Chocolate
Model: 924S
As I understand it, the engine starts but, for some reason, it cuts Steve and Malc out :panic:

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 Post subject: Re: porsche924slemans
PostPosted: Mon Jan 13, 2020 7:46 pm 
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Joined: Fri Jun 20, 2008 6:51 pm
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Location: Europe > Romania
Model: none
Who’s baffled? :lol:


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 Post subject: Re: porsche924slemans
PostPosted: Wed Jan 15, 2020 6:30 am 
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Joined: Tue Dec 23, 2014 12:28 pm
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Location: North West
Model: 924S
How long does the car run before cutting out, about 3-5 seconds? If so, my money would be on the Fuel Pressure Regulator (FPR).

Electrically disconnect one of the fuel injectors, try and start the car, if the FPR is at fault the car will now run but very roughly, more detailed explanation information can be found here:

https://porsche924.co.uk/forum/viewtopi ... &start=111

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 Post subject: Re: porsche924slemans
PostPosted: Wed Jan 15, 2020 10:35 am 
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Joined: Mon Jun 17, 2013 11:35 pm
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Location: The little old town of East Grinstead, UK
Model: '83 924 / '80 931
Here's the same information on Clarks Garage: http://www.clarks-garage.com/shop-manual/fuel-07.htm

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Alex. (the club Facebook bloke)
'80 924 Turbo unexpected project - now running and rolling restoration
'83 924 "Yin Yang" cheap track car with another member
'01 Vauxhall Combo constantly evolving, modified van for working / camping / band duties

Computer Problems: At your WITS End? http://www.witscomputers.co.uk


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