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Porsche Club GB

Charge voltage

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

Discussion summary

YOUR RESEARCHCharge voltage

Leading reported evidence

Check voltage

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Suggestion

How do you check the voltage from the dash then?

Original post Read captured discussion
Charge voltage
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Leading evidence: 'Check voltage' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check voltage' (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.

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1 matching discussions · 6 captured posts examined · 0 partial discussions

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Check voltage output directly

Suggestion or failed attempt

No successful repair reported for this finding.

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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 contain suggestions
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion

Check the voltage output directly from the alternator.

Original post Read captured discussion
Charge voltage

Check voltage whilst

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No successful repair reported for this finding.

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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 contain suggestions
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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

I have a plug in charger but I thought to check the voltage whilst running.

Original post Read captured discussion
Charge voltage

Replace brushes & bearings

Suggestion or failed attempt

No successful repair reported for this finding.

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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

If the alternator cannot provide a healthy voltage, it's fairly easy to change the brushes & bearings which is where the problem lies.

Original post Read captured discussion
Charge voltage

Use big +ve (jump lead) connection in the engine compartment

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes
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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

I think you could use the big +ve (jump lead) connection in the engine compartment to give you an idea of the alternator voltage.

Original post Read captured discussion
Charge voltage
Frequently discussed actions (5)

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

Check voltage

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

How do you check the voltage from the dash then?

Original post Read captured discussion
Charge voltage

Check voltage output directly

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

Check the voltage output directly from the alternator.

Original post Read captured discussion
Charge voltage

Check voltage whilst

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

I have a plug in charger but I thought to check the voltage whilst running.

Original post Read captured discussion
Charge voltage

Replace brushes & bearings

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 the alternator cannot provide a healthy voltage, it's fairly easy to change the brushes & bearings which is where the problem lies.

Original post Read captured discussion
Charge voltage

Use big +ve (jump lead) connection in the engine compartment

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

I think you could use the big +ve (jump lead) connection in the engine compartment to give you an idea of the alternator voltage.

Original post Read captured discussion
Charge voltage
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.

  • Porsche Club GB: 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: 20261026T191851Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

2003 Turbo suffering from the usual poor winter starting I have a plug in charger but I thought to check the voltage whilst running. I'm only getting 12.8volts at the battery and the dash display confirms this, however, I've noticed sometimes the dash display show near 14volts which I think is more likely. the car is fitted with a silver top BOSCH battery, what should I start checking? James

POST 2Original post

Check the voltage output directly from the alternator. This will eliminate any dodgy earths from the picture. If you see a steady 13.8V+, you can start looking further along for earthing / corroded connection problems. If you get all the way to the battery without find a fault, you could have a failing cell on the battery. If you have a local garage with a battery load tester get them to confirm battery health. If the alternator cannot provide a healthy voltage, it's fairly easy to change the brushes & bearings which is where the problem lies. A refurb alternator is ~£400 and a new one is way more than that. Cost of replacement parts is < £100!

POST 3Original post

How do you check the voltage from the dash then?

POST 5Original post

I think you could use the big +ve (jump lead) connection in the engine compartment to give you an idea of the alternator voltage. IIRC, the alternator output connects directly to it.

POST 6Original post

Err yes, fair point! I'd overlooked the obvious and was thinking about the OBC.

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