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RVA924s  



Joined: 18 Mar 2019
Posts: 11
Location: Richmond VA

PostPosted: Sat May 25, 2019 1:25 am    Post subject: Not running... Reply with quote

Hey all, Sadly me again looking for advice,
87 924s.
Had a problem with car randomly shutting off while driving.
Car progressed to shutting off on hard acceleration.
Then car got to the point it would fire up and immediately shut off. (sometimes a sputter)
I have recently changed the fuel line, filter, and fuel pump.
installed new DME relay (and tried to check wires feeding it to make sure its seated properly)
Removed/ sanded spark plugs. (had a little black build up but not bad).
Ensured gaped to .030 ish.
also checked to see if had steady stream of fuel at fuel rail.. (quite a bit came out when I gave it ignition)
Now care fires up and runs about 20 seconds and shuts off. (doesn't choke out or sputter.. just shuts off). Has a smell of 'un-burnt. fuel' as best i can describe it
Any ideas?
Thanks
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16again2009  



Joined: 04 Dec 2014
Posts: 47
Location: tulsa, ok

PostPosted: Sat May 25, 2019 6:01 am    Post subject: Reply with quote

If you will go to the pelican parts forum or the rennlist forum there are posts about this problem going on right now. Good luck.
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1988 porsche 924s
5 speed
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mikseymono1  



Joined: 08 Feb 2019
Posts: 10
Location: Brittany, France

PostPosted: Sat May 25, 2019 4:52 pm    Post subject: Reply with quote

Sounds like you are being methodical and ticking off problem areas.
For the DME relay have you replaced with OEM? I didn't and my new one was crapado right out of the box........

M
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9242 - 1988
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RVA924s  



Joined: 18 Mar 2019
Posts: 11
Location: Richmond VA

PostPosted: Sun May 26, 2019 12:33 am    Post subject: Reply with quote

Thanks for the reply.
Yeah I did get a OME DME relay. (I suppose it could still be a bad one).
Haven't tried jumping to bypass the relay to see if that works.

But did check speed sensor and reference sensor.. (Both a little over 1000 ohms). Didn't check gap but I assume that is shouldn't just come out of adjustment.

Anything else i should be testing or checking?
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mikseymono1  



Joined: 08 Feb 2019
Posts: 10
Location: Brittany, France

PostPosted: Sun May 26, 2019 2:33 am    Post subject: Reply with quote

Bit beyond me...but go over to Pelican/Tipec/Rennlist forums and ask there.

Good luck!

M
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9242 - 1988
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Paul  



Joined: 02 Nov 2002
Posts: 9373
Location: Southeast Wisconsin

PostPosted: Sun May 26, 2019 9:10 am    Post subject: Reply with quote

Check to make sure your rotor set screw is tight and that the rotor hasn't moved on its shaft.
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
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RVA924s  



Joined: 18 Mar 2019
Posts: 11
Location: Richmond VA

PostPosted: Sun May 26, 2019 9:45 am    Post subject: Reply with quote

Interesting.. Had to look up what exactally your talking about... But, that might just be the problem.
Working now but be the first thing I look at tomorrow.
Thanks for the suggestion.
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RVA924s  



Joined: 18 Mar 2019
Posts: 11
Location: Richmond VA

PostPosted: Mon May 27, 2019 12:28 am    Post subject: Reply with quote

Great thought..
The Distributor was loose at top (not locked in completely)
Removed Distributor and found locking screw was in place on the ignition rotor.
Dust shield was also broken.
Cleaned inside distributor and ignition rotor with electric contact cleaner and light sanding.
Put it all back together and sadly it didn't fix the problem.
Not sure I can completely eliminate it (maybe the broken dust shield/ improper seating caused issues with the ignition rotor.)
but feel like I would have seen a little difference.

any other ideas?
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RVA924s  



Joined: 18 Mar 2019
Posts: 11
Location: Richmond VA

PostPosted: Wed Jun 05, 2019 4:09 am    Post subject: Reply with quote

Well...
Problem ended up being the Fuel Pressure Regulator (FPR).
I was directed there by another member, with link to clarks garage article.
really appreciate the online communities
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