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Join Date: Dec 2016
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Porsche 911 1985 starts for seconds then dies
hi there, we have a 1985 Porsche 911 3.2 non turbo... We having some issues, first my friend just bought the car then on the way back while he was driving the cat stalled after drove 300kms. he mentioned it was hard staring from the beginning before he bought this car but it managed to start then he drove off. yes after 300kms driving the car stalled and now we trying to work it out what happened... first we checked the fuel and it seems working fine plus the ignition system looks good too, the symptom we having.. we can crank the engine and start for 2 seconds and dies then we tried again but still the same over and over... can you help please? we tried changing the accumulator plus fuel filter but it did not made any difference.... please help!
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12-11-2016, 05:34 PM
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Pretty sure I've read this is a crank sensor issue.
Go some Googling, it's a common issue.
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1986 Bosch Icon Wipers coupe. |
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12-11-2016, 06:02 PM
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oh okay... thanks!
is there anyway i could check if the Crank Sensor is faulty or not? Last edited by glenn_a; 12-11-2016 at 06:39 PM.. |
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12-11-2016, 06:08 PM
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Location: Melbourne, Australia
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Read my thread on this from earlier this year. Good tips for testing the sensors. I thought they were the problem, but it turned out to be the fuel pump. My advice: test the pump with the jumper lead described in my thread. It's easy. My pump would run for a few seconds, then die. If I smacked it, it ran again, then died. Obviously failing.
Broken down near Pt. Reyes, CA |
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12-11-2016, 09:27 PM
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thank you but just noticed this model dont have Crank Angle sensor, it has a distributor on it...
For me I think its something to do with the FUEL, when ever i spray a carby cleaner in the inlet then it runs a bit longer but still stalls... that is why I replaced the Accumulator and Fuel Filter and checked the fuel injectors and fuel distributor block and its all working fine... I am not familiar with this system yet but I noticed that the injectors sprays fuel only few times (first spray when you crank the car) (second spray when engine runs but not continues spraying) is that normal? I found one fuel injector around throttle body and that was spraying to and thinking that could be a cold start injector right? Please help! |
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12-12-2016, 02:35 PM
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Quote:
thanks! |
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12-12-2016, 03:02 PM
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autojack! thanks for that info about the fuel pump..! its sound like it is the pump but when I ever tried to jump start the fuel pump then crank the engine then the starter kept cranking... can you please help me with that? is there any relay issue could be? or maybe its just a relay issue? would you know which one is the starter relay and fuel relay plus location please...!
thanks! |
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12-12-2016, 03:04 PM
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Can you explain exactly what you did, in terms of the jumper for the fuel pump? You should be following the steps here: Broken down near Pt. Reyes, CA
The point of that test is not to try and start the car. With the car off (don't even need the key in it), put the jumper across pins 30 and 87b in the DME relay socket (under the driver's seat) as shown. You should be able to hear the fuel pump running from outside the car. The pump is covered by the large skid plate between the front wheels. If you can't hear it running, it's dead and you should replace it. If you put the jumper on and the starter cranks, you are jumpering the wrong contacts.
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1988 911 coupe 1976 Vespa Rally 2015 Honda HR-V |
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12-13-2016, 09:46 AM
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Location: Wayne, PA
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Could it be as simple as a bad fuel filter?
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Christopher Mahalick 1984 911 Targa, 1974 Lotus Europa TCS 2001 BMW 530i(5spd!), Ducati 900 SS/SP 2006 Kawasaki Ninja 250, 2015 Yamaha R3 1965 Suzuki k15 Hillbilly, 1975 Suzuki GT750 |
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12-13-2016, 09:53 AM
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The Dude abides...
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Quote:
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Steve '03 Carrera 4S |
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12-13-2016, 05:41 PM
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He said he has already replaced the fuel filter.
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12-13-2016, 07:31 PM
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def sounds like a fuel pump... get a bosch replacement.
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12-13-2016, 07:55 PM
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'03 4S
