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Oil pressure zero on start, then fixed

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHOil pressure zero on start, then fixed

Leading reported evidence

Check oil level and it was about 50%

Performed · outcome unconfirmed

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 performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed · Original poster
Checked oil level and it was about 50% on the dipstick when at operating temp; car running fine.
Original post Read captured discussion
Oil pressure zero on start, then fixed

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Leading evidence: 'Check oil level and it was about 50%' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'pressure sensor either the sensor proper or its wiring/connection/connector' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check oil level and it was about 50%' (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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1 matching discussions · 6 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace under warranty

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed
had mine replaced under warranty.
Original post Read captured discussion
Oil pressure zero on start, then fixed

pressure sensor either the sensor proper or its wiring/connection/connector

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause: 1
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that suspect a cause: 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.

Suspected cause
The problem is likely a pressure sensor either the sensor proper or its wiring/connection/connector.
Original post Read captured discussion
Oil pressure zero on start, then fixed

Clean contacts

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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 you still need to change it after you clean the contacts.
Original post Read captured discussion
Oil pressure zero on start, then fixed

Clean contacts first

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
You should try cleaning the contacts first.
Original post Read captured discussion
Oil pressure zero on start, then fixed

Frequently discussed actions (4)

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

Check oil level and it was about 50%

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed · Original poster
Checked oil level and it was about 50% on the dipstick when at operating temp; car running fine.
Original post Read captured discussion
Oil pressure zero on start, then fixed

Clean contacts

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 you still need to change it after you clean the contacts.
Original post Read captured discussion
Oil pressure zero on start, then fixed

Clean contacts first

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
You should try cleaning the contacts first.
Original post Read captured discussion
Oil pressure zero on start, then fixed

Replace under warranty

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 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.

Performed · outcome unconfirmed
had mine replaced under warranty.
Original post Read captured discussion
Oil pressure zero on start, then fixed

Reported and suspected causes (1)

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

pressure sensor either the sensor proper or its wiring/connection/connector

No successful repair reported for this finding.

0
Identified cause: 1
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that suspect a cause: 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.

Suspected cause
The problem is likely a pressure sensor either the sensor proper or its wiring/connection/connector.
Original post Read captured discussion
Oil pressure zero on start, then fixed

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.

6 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: 20261026T094842Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hoping (assuming) this is a non-issue. Went to start up car and oil pressure showed zero with an oil failure warning. Turned off car and restarted, no problem, pressure normal, warning gone. Checked oil level and it was about 50% on the dipstick when at operating temp; car running fine. Forget it until it happens again?

POST 2Original post

Quotes source post: 9106558

The oil pump in these engines either works or it doesn't. It is part of the IMS and of course this is driven by a chain from the crankshaft. If the pump stops turning the cams stop turning and at this point loss of oil pressure is like finding out as the Titanic is going down the galley is out of caviar. The problem is likely a pressure sensor either the sensor proper or its wiring/connection/connector. I'd get this looked into and if any problem found fixed. It is one thing to have this warning appear upon starting the engine. It would be a bit of a heartstopping moment to have the warning appear while the engine was running and perhaps you driving in traffic. There are enough unexpected distractions without having a flakey oil pressure sensor sender adding to them. Sincerely, Macster.

POST 3Original post

common issue, Oil Sending Unit on its way out... had mine replaced under warranty. Apprantly its a Simple Job and Cheap Part

POST 4Original post

Well.... I don't know about simple... https://rennlist.com/forums/996-foru...ement-diy.html You should try cleaning the contacts first.

POST 5Original post

Hi, I bought a 19 mm normal open jaw wrench, and cut it off about 1" from the jaws. Then I went in from underneath, with a crow bar to pry with. It took maybe 15 minutes all and all. Regards, Johan

POST 6Original post

If you still need to change it after you clean the contacts. A 19mm "crows foot" with the right wobble extension will do it from underneath also. http://www.grainger.com/Grainger/BLA...t-Wrench-4AV99

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