Rennlist

Fuel Pressure Problems

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4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHFuel Pressure Problems

Leading reported evidence

Replace fuel pump controller...if not ok

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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.

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
If pressure then OK replace fuel pump controller...If NOT OK then report back....
Original post Read captured discussion
Fuel Pressure Problems

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Leading evidence: 'Replace fuel pump controller...if not ok' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace fuel pump controller...if not ok' (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.

Read captured replies

1 matching discussions · 4 captured posts examined · 0 partial discussions

Compare 1 other evidence results

Test pressure

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
Apply 12v power and ground directly to fuel pump and test pressure...
Original post Read captured discussion
Fuel Pressure Problems

Frequently discussed actions (2)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace fuel pump controller...if not ok

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
If pressure then OK replace fuel pump controller...If NOT OK then report back....
Original post Read captured discussion
Fuel Pressure Problems

Test pressure

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
Apply 12v power and ground directly to fuel pump and test pressure...
Original post Read captured discussion
Fuel Pressure Problems

Coverage and how to read this overview

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.

4 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Rennlist: 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: 20261027T035758Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi folks !!! So I have a 2002 996 Carrera 4 that has a fuel pressure problem and I have run out of ideas. The car has a new fuel pump and a new fuel pressure regulator (the level sending unit and pressure regulator come as an assembly). The car starts and while the engine is running, the pressure reads between 25 and 27 psi, very low. However, the engine idles fine for a while and then the idle becomes rough and the pressure drops to about 18 psi. My next thought is the fuel module, but I don't want to go that route blindfolded. Has anyone encountered these symptoms and found a solution? Suggestions? Thanks in advance ...

POST 2 / ORIGINAL POSTEROriginal post

Aren't there any technical folks out there with suggestions?

POST 3Original post

Quotes source post: 18472721

Apply 12v power and ground directly to fuel pump and test pressure... If pressure then OK replace fuel pump controller...If NOT OK then report back....

POST 4 / ORIGINAL POSTEROriginal post

Thanks Porschetech2. I will do that ...

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