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Fuel Gauge doesn't go to full?

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10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHFuel Gauge doesn't go to full?

Leading reported evidence

Check doors, underneath the dash, seats, carpets and all dry

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

I've checked the doors, underneath the dash, seats, carpets and all dry.

Fuel Gauge doesn't go to full?
Read full discussion summary

Leading evidence: 'Check doors, underneath the dash, seats, carpets and all dry' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check doors, underneath the dash, seats, carpets and all dry' (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 · 10 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Clean somewhere

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

FWIW, when a 928 has this issue a ground needs cleaned somewhere.

Fuel Gauge doesn't go to full?

Test instrument cluster

Suggestion or failed attempt

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 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

Dealer can test the instrument cluster.

Fuel Gauge doesn't go to full?
Frequently discussed actions (3)

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

Check doors, underneath the dash, seats, carpets and all dry

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

I've checked the doors, underneath the dash, seats, carpets and all dry.

Fuel Gauge doesn't go to full?

Clean somewhere

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

FWIW, when a 928 has this issue a ground needs cleaned somewhere.

Fuel Gauge doesn't go to full?

Test instrument cluster

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

Dealer can test the instrument cluster.

Fuel Gauge doesn't go to full?
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.

10 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.

1 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link

So I filled up the gas tank again with the gas pump handle upside down and problem solved!

No unique explicit quoted action; no causal link assigned

Generation: 20261027T064914Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Okay, I am facing this weird problem on my 996 gauges. About a month ago, the oil pressure gauge sometimes failed while driving and few minutes later it will back to function. I took the car to a shop for a check up but it was functioning properly so I end up don't bother. Today, I decided to take the car out for a drive and fill up as it has been siting in the garage. After I fill up the gas tank, the fuel gauge doesn't go all the way up?? I notice last time I when fill up the tank, the gauge did went up to full but quickly drop down to the same fuel level as today. What could possibly be wrong on this?? Attached photo shows the level it stop after filled up and drive for 10 miles.

POST 2Original post

Quotes source post: 7394523

Could be instrument cluster wiring connector has a bit of surface corrosion affecting sensor inputs. Or the cluster controller going bad. Hard to say. Dealer can test the instrument cluster. Have you washed the car recently? Let it sit in the rain? Has the car any signs of dampness? Carpets dry? Under the seats? Is it dry around bottoms of the doors? Lastly, give the car a thorough inspection in the cabin and front trunk and engine compartment for any signs of rodent infestation. A car sitting unused even a couple of weeks at the wrong time can attract mice or something bigger. Rodents gnawing on wiring can cause all sorts of odd electrical problems. Sincerely, Macster.

POST 3 / ORIGINAL POSTEROriginal post

No sign of dampness. I washed the car a month ago, let it sit on the driveway under the sun for few hours and took out for a drive and things were fine. I've checked the doors, underneath the dash, seats, carpets and all dry. I will take a car for a check out also a service in the next few weeks. Thanks! Peter

POST 4Original post

Sounds weird but try filling up with the gas pump handle upside down, honestly I hear it works.

POST 5 / ORIGINAL POSTEROriginal post

Quotes source post: 7394847

Thanks Eharrison for the tip! Should I wait until the gas tank empty or I can simply fill up again with this gas pump handle trick? I only drives the car once a week or every two weeks...=/

POST 6Original post

FWIW, when a 928 has this issue a ground needs cleaned somewhere.

POST 7Original post

Quotes source post: 7396533

I've never tried it, I keep forgetting but there is a thread on this on 6speed. This was my response to why it works.... http://www.6speedonline.com/forums/2658114-post26.html

POST 8 / ORIGINAL POSTEROriginal post

Quotes source post: 7396576

You remind me this fuel gauge issue happens after I pour a bottle of Redline fuel injection cleaner into the gas tank during my last fill up. But I don't think the fuel injection cleaner will mess it up?

POST 9 / ORIGINAL POSTEROriginal post

So I filled up the gas tank again with the gas pump handle upside down and problem solved! =)

POST 10Original post

Quotes source post: 7411528

sweet, maybe you should do the same with your oil gauge problem.

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