9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH996 turbo starts, runs then stalls
Leading reported evidence
Replace pump and all is good
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
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Leading evidence: 'Replace pump and all is good' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check fuel pressure' (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.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
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Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed · Original poster
I used the PST2 to active the Fuel pump final stage in Drive Links for DME and i can hear the relay click and pump whirring.
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Suggestion
It sounds like it is working, but the only way to know for sure is to check the fuel pressure.
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
You shouldn't need to recalibrate the level sensor, but if the tank is less than about 1/4 full, and you disconnect the battery, then I would fill it up after completing the work.
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Suggestion · Original poster
When I activated the fuel pump using Drive Links on the PST2, the pressure only went up to 0.8 bar.
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Suggestion
You shouldn't need to recalibrate the level sensor, but if the tank is less than about 1/4 full, and you disconnect the battery, then I would fill it up after completing the work.
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Suggestion · Original poster
It broke down with a full tank of fuel so the pump was completely submerged but I pumped out half of it using a fluid transfer pump enough to have the hoses I had to disconnect at the pump above the fuel line.
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.
9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Club GB: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T112012Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Last night while driving, my car was running fine then started losing power going up hill as if the car was running out of petrol then 5 seconds later, the engine just cut out. There were no warning lights prior to this. I was able to re-start the car and it ran fine with no fault lights and cut out again within 5 seconds. I was able to do this repeatedly.
C4 fuse is fine, I haven't checked the fuel pump relay and wanted to confirm that it is relay number 13 (996 615 101 00)? And advice about which terminals to bridge would be greatly appreciated.
The only codes I have logged currently is P1146 and P1156.
The tank is full of fuel and my pump is original. I wonder if the hoses on my 20 year old pump has succumbed to age and E10 petrol.
Yes, relay 13 is the fuel pump. You can bridge 87 and 38 to by-pass it temporarily.
P1146 and P1156 are for open circuit oxygen sensors ahead of the cat. Highly unlikely both would have failed simultaneously, and I doubt they would cause the symptoms you have. I would clear them, and see if they come back.
I used the PST2 to active the Fuel pump final stage in Drive Links for DME and i can hear the relay click and pump whirring. Would I be correct in assuming that the fuel pump sounds like it working ok?
I wouldn’t be surprised if its the fuel line on the pump, my friend had a small split in his on his 996tt wasn’t easy to find, i remember him making up and fitting some aftermarket pipes as genuine were a crazy price
I connect a fuel pressure tester today and it read 0 bar without doing anything. When I activated the fuel pump using Drive Links on the PST2, the pressure only went up to 0.8 bar. I have a new pump from OPC on the way and it’s cheaper than anywhere else online by £100 with a discount from the parts department.
You shouldn't need to recalibrate the level sensor, but if the tank is less than about 1/4 full, and you disconnect the battery, then I would fill it up after completing the work. (The C4 saddle tank thing).
I have now replaced the pump and all is good. It broke down with a full tank of fuel so the pump was completely submerged but I pumped out half of it using a fluid transfer pump enough to have the hoses I had to disconnect at the pump above the fuel line. It was a bit fiddly but not difficult.
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