Rennlist

Oil pressure sensor weirdness...

Add to repair workspace

New repair projectOpen repair workspace

Original source

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHOil pressure sensor weirdness...

Leading reported evidence

Replace oil pressure sensor within the last 4-5 years due

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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
Replaced oil pressure sensor within the last 4-5 years due to the "HOLY CRAP!" syndrome(drop to zero, sound alert.
Original post Read captured discussion
Oil pressure sensor weirdness...

Read full discussion summary

Leading evidence: 'Replace oil pressure sensor within the last 4-5 years due' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace oil pressure sensor within the last 4-5 years due' (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

Frequently discussed actions (1)

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

Replace oil pressure sensor within the last 4-5 years due

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
Replaced oil pressure sensor within the last 4-5 years due to the "HOLY CRAP!" syndrome(drop to zero, sound alert.
Original post Read captured discussion
Oil pressure sensor weirdness...

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: 20261026T135432Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

2005 C4S. Replaced oil pressure sensor within the last 4-5 years due to the "HOLY CRAP!" syndrome(drop to zero, sound alert. go back to proper oil pressure, wash-repeat). Recently I have noticed that before I start the car for the first time in the day that the gauge goes up to 0.5 to 1 when the ignition is turned on. Ok Ok I know the drill, but wait there's more. If I turn the key back off without starting the engine then switch the ignition back on(not starting the engine) it stays at zero. In addition after driving the car shutting it off, go in to do some shopping and come back out switch on ignition it stays at zero! Seems like only first ignition on of the day causes this reaction. When I stop being lazy I'm going to try to get my hands on the wires as it sounds like a false feed from dirt/crud/corruption/moisture to me. Or maybe these things just have a short life span. BTW car is garaged. Anybody have this syndrome or "try this" ideas?

POST 2Original post

I'd just sell it to me as a roller and move on!

POST 3Original post

FWIW I replaced mine less than 6 months ago and it's acting up again. They are notorious for going bad so 4-5 years is a good run. Either the sensor is starting to go and showing first signs or as you assume the connections are corroded and need to be cleaned.

POST 4 / ORIGINAL POSTEROriginal post

Quotes source post: 17588399

It would be an expensive "roller"...

This is a source reference. Confirm exact model applicability in the original material.