Rennlist

Fuel gauge problem or just C4/S tank quirk?

Add to repair workspace

New repair projectOpen repair workspace

Original source

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHFuel gauge problem or just C4/S tank quirk?

Leading reported evidence

Replace fuel tank sending unit

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
I had a similar issue , I changed the fuel tank sending unit .
Original post Read captured discussion
Fuel gauge problem or just C4/S tank quirk?

Frequently discussed work

Fill ups

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
Lots of previous posts, most indicating that the gauge doesn�t show full or that owners can only put 12-13 gallons into the tank during fill-ups...
Original post Read captured discussion
Fuel gauge problem or just C4/S tank quirk?

Read full discussion summary

Leading evidence: 'Replace fuel tank sending unit' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Fill ups' (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

Fill ups

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
Lots of previous posts, most indicating that the gauge doesn�t show full or that owners can only put 12-13 gallons into the tank during fill-ups...
Original post Read captured discussion
Fuel gauge problem or just C4/S tank quirk?

Run tank dry

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
It's easy enough and I never have to worry about running the tank dry...
Original post Read captured discussion
Fuel gauge problem or just C4/S tank quirk?

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.

Fill ups

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
Lots of previous posts, most indicating that the gauge doesn�t show full or that owners can only put 12-13 gallons into the tank during fill-ups...
Original post Read captured discussion
Fuel gauge problem or just C4/S tank quirk?

Replace fuel tank sending unit

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
I had a similar issue , I changed the fuel tank sending unit .
Original post Read captured discussion
Fuel gauge problem or just C4/S tank quirk?

Run tank dry

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
It's easy enough and I never have to worry about running the tank dry...
Original post Read captured discussion
Fuel gauge problem or just C4/S tank quirk?

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.

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: 20261027T075545Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

This has happened 2-3 times during my ownership of the car. It isn't a big deal, but I would like to figure out if its a problem or just a weird nuance of the split fuel tank in the C4S. Out driving, low fuel chime sounds, light comes on, and tank is at roughly 1/8. Remaining range shows about 40 miles. This is all normal so far. Then, I get to where I'm going, and the next time I start the car its absolutely 0. -- miles remain on range and needle is all the way down. Since I've yet to run out of gas in this situation, I'm assuming that the earlier reading is accurate and that something is getting a mis-read in a low fuel state. Its pretty stressful regardless. Has anyone else experienced this? Thanks Charlie

POST 2Original post

I've never experienced that scenario, but my electronic meter isn't accurate ('99 C4). In my case it never goes to empty - it's possible that the float is getting hung up on the wiring, but I've never opened it up. I just refill the tank and zero the trip odometer when I get to 200 mi. or thereabout. It's easy enough and I never have to worry about running the tank dry...

POST 3Original post

I had a similar issue , I changed the fuel tank sending unit . I bought one and a new seal from pelican . Took about 30 mins . There is a fire risk so no sparks or open flames! Easy job otherwise . Take the battery out and it�s under it . It just unscrews

POST 4 / ORIGINAL POSTEROriginal post

Quotes source post: 15466416

Thanks for the info! If it continues I'll give that a shot. Cheers Charlie

POST 5Original post

Fuel tank gauge problems are common on these cars. Lots of previous posts, most indicating that the gauge doesn�t show full or that owners can only put 12-13 gallons into the tank during fill-ups...

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