5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
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YOUR RESEARCHCDR 220 Problem
Leading reported evidence
Replace alternator everything worked fine
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
1
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Performed · outcome unconfirmed
After I replaced the alternator everything worked fine again.
Leading evidence: 'Replace alternator everything worked fine' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check /' (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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Discussions that contain suggestions
1
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Suggestion
I'm going to have my voltage regulator and battery checked/replaced and let you know if that fixes the problems.
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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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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Suggestion
I am not particularly familiar with Porsche charging system so I can't get very specific on where to go from there, but usually check for loose battery cables, voltage regulator, then alternator.
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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Suggestion
I'm sure someone will correct me, but I think a quick way to test if voltage regulator or alternator have gone bad is to check the voltage at your battery while the car is running.
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 am not particularly familiar with Porsche charging system so I can't get very specific on where to go from there, but usually check for loose battery cables, voltage regulator, then alternator.
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'm sure someone will correct me, but I think a quick way to test if voltage regulator or alternator have gone bad is to check the voltage at your battery while the car is running.
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.
Pelican Parts: 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: 20261026T105141Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
On my '99 cab...
The problem started slowly. Every once in a while when I put the top down, the radio would shut off. After a while, it would power itself back on. Now, the radio will almost never power on at all. During a recent road trip however, I was driving at night. With the headlights and air-conditioner on, the radio would come on...sometimes If I turned the air conditioner compressor off, however, the radio would go out. It didn't happen every time, but I figured that it must have something to do with electrical load - like the radio likes less current, more load. Has anyone else experienced this? Does anyone know what the fix is?
Well I don't have a '99 cab........
But, a similar thing happened with my '87 when the voltage regulator/ alternator went bad. First my radio shut off and then the car quit on me and failed to start. After I replaced the alternator everything worked fine again.
I'm sure someone will correct me, but I think a quick way to test if voltage regulator or alternator have gone bad is to check the voltage at your battery while the car is running. I believe it should read about 12.5-13v, but again someone with better skills than me will probably give you a better idea.
Good luck anyway.
Battery should read 12.5-13v with car not running. With engine running and rpms above 3k you should see more than 14v at the battery. If you see less volts than with the car running that not running then your charging system is drawing from the battery a definite sign it isn't charging. This is standard for any 12v engine. I am not particularly familiar with Porsche charging system so I can't get very specific on where to go from there, but usually check for loose battery cables, voltage regulator, then alternator. Someone correct me if I am wrong.
I haven't checked back here for several days. Thanks for the responses. I'll check the charging system.
My wife drove the car the other day. She turned the defroster on and the radio worked fine for the rest of her trip. Maybe the car just hates me...
I just bought a beautiful '99 Boxter with the same problem. Seems that the electrical load or charge on battery may affect many functions. Sometimes I can't operate the top unless car is stopped and handbrake engaged. My radio only runs when car is not running, with key in accessories mode (on). I'm going to have my voltage regulator and battery checked/replaced and let you know if that fixes the problems.
Steve
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