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Sounds like a bad WUR, but like everyone else is saying, if you're not going to do the work yourself, you need to take it to a Porsche mechanic (not neccesarily a dealer). If you go to the average mechanic, you will spend more on replacing parts that don't need replacing than you will on the difference in labor rate. If you don't have access to a Porsche mechanic, I recommend buying CIS pressure testing gauges and a Bentley manual, and then spend a couple of hours searching this forum for similar problems and solutions.
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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10-07-2004, 03:13 AM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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There are lots of threads on this. This is very common on old CIS cars, especially as cooler morning temps start up again. Most common causes are the WUR as David says, the AAR, or even a too lean mixture setting.
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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10-07-2004, 05:13 AM
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Registered
Join Date: Jun 2003
Location: White Lake, MI
Posts: 229
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Cough, sputter, cough. Dead fuel pump??
this was my experience. Sounds exactly like what you aer going through. I will go out on a limb and say this thread will fix your problem. -I still am kicking myself over this .... |
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10-08-2004, 08:26 AM
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Registered
Join Date: Sep 2002
Location: INDY " fishers indiana"
Posts: 3,243
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I had the same problem once. My mechanic forgot a T wrench in the upper back end of the engine (TOP SID
jpc
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Farmers Automotive 1-800-213-6373 http://www.farmersautomotive.com 1987 928S4,1989 911 25th, 1993 RSA, 1989 944,1988 911 1968 912, 1976 911 S, 1975 914  Engine dynohttp://www.youtube.com/watch?v=tJKdvrX_mTI&feature=youtube_gdata_player |
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10-08-2004, 08:43 AM
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Registered
Join Date: Oct 2004
Location: San Diego
Posts: 4,870
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This 20 year old thread just helped me diagnose and fix my SC. Was running like crap, and dying shortly after ignition. I had recently done a bunch of service to CIS and fixed some vacuum leaks, so I had already tested several components. The cause of my issue was a bad wire in the driver's door for the dome light switch. It was popping the fuse that is used by the lamda unit relay. Who would have thought a dome light would stop the car from running? This community is such a great resource.
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09-02-2024, 06:23 PM
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1979 Porsche 930 3.4
