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Porsche 911 996 C4S Faulty fuel guage & leaking radiator

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

Discussion summary

YOUR RESEARCHPorsche 911 996 C4S Faulty fuel guage & leaking radiator

Leading reported evidence

Fill with fuel

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

Also putting some fuel in the car the other day (£30) the fuel guage didnt register, the light was still on and saying it had no miles left in the tank, it took a few hours and then went up to half way which was correct, i then waited for the light again and put in £20 but again this didnt register, so the guage is going down when using the fuel but isnt going back up once filled with fuel.

Original post Read captured discussion
Porsche 911 996 C4S Faulty fuel guage & leaking radiator
Read full discussion summary

Leading evidence: 'Fill with fuel' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'radiator will be shot' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Fill with fuel' (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 · 5 captured posts examined · 0 partial discussions

Compare 2 other evidence results

radiator will be shot

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
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 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

it's most likely the radiator will be shot.

Original post Read captured discussion
Porsche 911 996 C4S Faulty fuel guage & leaking radiator

Use fuel

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 · Original poster

Also putting some fuel in the car the other day (£30) the fuel guage didnt register, the light was still on and saying it had no miles left in the tank, it took a few hours and then went up to half way which was correct, i then waited for the light again and put in £20 but again this didnt register, so the guage is going down when using the fuel but isnt going back up once filled with fuel.

Original post Read captured discussion
Porsche 911 996 C4S Faulty fuel guage & leaking radiator
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.

Fill with fuel

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

Also putting some fuel in the car the other day (£30) the fuel guage didnt register, the light was still on and saying it had no miles left in the tank, it took a few hours and then went up to half way which was correct, i then waited for the light again and put in £20 but again this didnt register, so the guage is going down when using the fuel but isnt going back up once filled with fuel.

Original post Read captured discussion
Porsche 911 996 C4S Faulty fuel guage & leaking radiator

Use fuel

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 · Original poster

Also putting some fuel in the car the other day (£30) the fuel guage didnt register, the light was still on and saying it had no miles left in the tank, it took a few hours and then went up to half way which was correct, i then waited for the light again and put in £20 but again this didnt register, so the guage is going down when using the fuel but isnt going back up once filled with fuel.

Original post Read captured discussion
Porsche 911 996 C4S Faulty fuel guage & leaking radiator
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.

radiator will be shot

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

it's most likely the radiator will be shot.

Original post Read captured discussion
Porsche 911 996 C4S Faulty fuel guage & leaking radiator
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.

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

  • 911uk: 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: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi, Not sure if anybody can help but here goes, I have recently purchased a 2003 Porsche 911 996 C4S not long after buying it privately the right hand radiator has developed a very small leak from it, i only notice it ocassionally with a v.small puddle on the floor. Could this be the pipework going to the radiator or does it sound like it needs a replacement? Also putting some fuel in the car the other day (£30) the fuel guage didnt register, the light was still on and saying it had no miles left in the tank, it took a few hours and then went up to half way which was correct, i then waited for the light again and put in £20 but again this didnt register, so the guage is going down when using the fuel but isnt going back up once filled with fuel. Anyone have any suggestion what this could be? Thanks Patrick

POST 2Original post

Hi Patrick, it's most likely the radiator will be shot. They are known to corrode as a result of the dirt build-up which gets in through the front grilles and remains stuck to both the coolant and air con radiators at the bottom. If you're handy with spanners, it's good practise to remove the front bumper (PU) and clean out all the crud periodically. The fuel gauge sounds about right. I think it is due to the shape of the fuel tank having two cavities as opposed to one big tank. The fuel gauge doesn't register part-fills sometimes, I cannot say exactly what amount it neglects to register. It should however, always register a complete fill up. Hope this helps...

POST 4Original post

Beat me to it; the fuel tank on the C4S is like an 'n' shape so the guage is only accurate for the top half of the tank - once it's down below half the guage is basically guessing as to how much fuel is left so if you don't top it up to at least half way it'll still tell you it's empty! :roll: This is in the owners manual by the way, if you have one with the car?

POST 5Original post

£50 to put the light out and have it reading and radiator should take you 2.5 to 3 hours and cost varies from £200 to around £350 for a rad.

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