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Registered
Join Date: Sep 2017
Posts: 3
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964 cut out while driving and would not restart
I was out today in my 964 and it just died on me. I tried to restart it and it has power but just won't turn over. Could it be the fuel filter or the fuel pump relay?
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09-14-2022, 01:34 PM
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Join Date: Mar 2008
Location: Temecula, CA
Posts: 755
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The Fuel Pump relay is always the first place to start when it randomly shuts down or doesn’t start up.
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CURRENT: 2011 Boxster Spyder, Sport Buckets, MT, Full Leather, PSE, Basalt Black/Black 1990 964 C2, MT, Marine Blue, Silk Grey/Marine Blue 2024 Macan White, Beige / 2010 Cayenne White, Black PAST: 69 911 Targa, 87 928 MT Marine Blue, 90 928 GT Marine Blue, 90 911 Targa Stone Grey |
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09-14-2022, 05:48 PM
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Join Date: Jun 2011
Location: San Diego
Posts: 108
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Happened to me on my RS America. Turned out to be the Key. Nubs wore down, let Run Pin Open.
Used Spare, Fired right up. Changing the relay didn't help. |
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09-17-2022, 03:29 PM
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Join Date: Mar 2008
Location: Temecula, CA
Posts: 755
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Quote:
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CURRENT: 2011 Boxster Spyder, Sport Buckets, MT, Full Leather, PSE, Basalt Black/Black 1990 964 C2, MT, Marine Blue, Silk Grey/Marine Blue 2024 Macan White, Beige / 2010 Cayenne White, Black PAST: 69 911 Targa, 87 928 MT Marine Blue, 90 928 GT Marine Blue, 90 911 Targa Stone Grey |
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09-17-2022, 04:14 PM
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Join Date: Dec 2017
Posts: 966
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Check out one of the relay. I forgot the name of that relay, but that relay needed to open up and
re-solder or buy a new relay. I re-soldered it and it works. |
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09-17-2022, 05:30 PM
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Check to see if you have fuel. spark at the plugs.If both are not present, could be flywheel speed sensor.
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09-18-2022, 01:04 AM
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Join Date: Jun 2011
Location: San Diego
Posts: 108
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Quote:
starter. $600 to rebuild the switch, so they can be rebuilt, just pricy. I used Black Forest in San Diego Good Luck |
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09-19-2022, 10:41 AM
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Relay
If it is your relay you might consider a solid state relay from ftech9 if your 964 is a coupe. For some reason they don’t work on a cabriolet. No affiliation. I went through two relays. I installed their ft9 a few years ago and no hiccups yet. Btw. Always keep a spare.
Last edited by wesleyc; 09-19-2022 at 01:24 PM.. Reason: Information |
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09-19-2022, 01:20 PM
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I would start by checking the fuses to the DME and fuel pump if that doesn't do anything try replacing the DME relay. It sounds like the engine is turning so it isn't the starter.
I have had the switch at the end of the key column fail. It is a PITA but can be swapped out. It doesn't sound like the problem but the switch is designed to cut out the lights and in the case of a C4 or turbo the hydraulic pump when starting to eliminate excessive draw on the system.
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Anthony PCA affiliate '77 member '83 '90 3.8 RS tribute, 91 C4 converted to C2,'93 964 C2, '93 928 GTS M '94 Turbo 3.6, '15 Boxster GTS M,16 GT4,23 Macan GTS, Gone worth mentioning '71 E '79 SC, '79 built to '74 3.0 RS tribute (2390 # 270 hp), '80 928 euro 5 speed, '74 2.0l 914, '89 944 S2,'04 Cayenne TT '14 boxster, '14 Cayenne GTS 14 Cayman S, 18 Macan GTS many others |
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09-22-2022, 05:08 AM
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Engine Cut Out
After Fuel Pump Relay, and Fuses - Next culprit is Fuel Pump
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09-22-2022, 08:06 AM
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1990 Porsche 964 Carrera 4 3.6 liter
Porsche 993 x2
3.6 Turbo
GTS
C2
Track car
