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YOUR RESEARCHNon starting 964 C2 - Page 1 - Porsche General - PistonHeads UK
Leading reported evidence
Check following
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
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Discussions that performed work without a confirmed outcome
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Non starting 964 C2 - Page 1 - Porsche General - PistonHeads UK
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Leading evidence: 'Check following' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check crank position sensor' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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1
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Non starting 964 C2 - Page 1 - Porsche General - PistonHeads UK
Run when the relay contact is manually operated
Suggestion or failed attempt
No successful repair reported for this finding.
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Unsuccessful attempts
1
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Suggestion · Original poster
With the ignition on and the DME cover removed i cant here the fuel pump running when the relay contact is manually operated.
Non starting 964 C2 - Page 1 - Porsche General - PistonHeads UK
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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
10 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
PistonHeads: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
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Generation: 20261027T011819Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi Folks
Just went to flash up the 964 ready to load it up for a trip to the paint shop.
Checked the following:
Battery all good, DME pulls in, car cranks. This car has the annoying porsche immobiliser that flashes an led in the centre consul that changes to constant when the immobiliser fob is inserted after the 2 beeps. I did have fuel pump issues and this was replaced and if a separate supply is made the pump operates. With the ignition on and the DME cover removed i cant here the fuel pump running when the relay contact is manually operated. Any suggestions. I dont have a wiring diagram hence any details on what the immobiliser disables would be helpful
Thanks for the reply. The car was running fine last month. I'm wondering what the immobiliser disables as well as stopping the car from cranking. I will check the crank position sensor .
gareth h said:
I had similar on my 993, Twas the crank sensor.
This, apart from the battery; this was the only failure I had in 18 years on my C2. Crank no start, as the ecu doesn't get the 30mph min speed it needs to see ( that's if my memory is working correctly)
Rossco196x said:
I assume there isn't an OBD port on these cars that i can plug a scanning tool into ?
The diag port is on the left of the passenger footwell. I'm not sure what types of reader will work other than the original Bosch hammer or aftermarket tools like the PDT999. Some background info here along with a tool Iv've not seen before.
https://www.bergvillfx.com/products/t-hammer-diagn...
Edited by ffc on Monday 30th June 20:15
There was a very long time ago a tool shared on Rennlist, going as far as showing the tooling required for the port setup, I had one; long since gone now.
No it doesnt and yes this could be the crankshaft Position sensor however further investigation with the DME relay bypassed didn't result in the fuel pump running or the car starting hence i still think it might be immobiliser related.
The car was winched on to a low loader yesterday and off to the spray shop so will look again upon its return in a few months time
Thanks
RossCo
No it doesnt and yes this could be the crankshaft Position sensor however further investigation with the DME relay bypassed didn't result in the fuel pump running or the car starting hence i still think it might be immobiliser related.
The car was winched on to a low loader yesterday and off to the spray shop so will look again upon its return in a few months time
Thanks
RossCo
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