9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHWon?t run w/o battery.
Leading reported evidence
Disconnect seems like an easy fix and you're back
Performed · outcome unconfirmed
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1
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Performed · outcome unconfirmed
since your ground cable was actually disconnected seems like an easy fix and you're back on the road again.
Leading evidence: 'Disconnect seems like an easy fix and you're back' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check alternator in any case' (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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Suggestion
You may want to check your alternator in any case.
Check whether it is your battery or your alternator
Suggestion or failed attempt
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Suggestion
Check out post #4 here for tips on how to check whether it is your battery or your alternator that needs replacing:
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Suggestion · Original poster
Is it normal for a 996 to shut off when you disconnect the battery?
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Suggestion
Just recharge and reconnect your battery and keep an eye on it.
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Suggestion
I've seen guys pull a battery cable off a car while it was running ,every led light in the vehicle blew out from the elect surge .It was not good,especially since the car belonged to a popular radio D J .He was without his car for a month ,but didn't blast the shop to bad.
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.
9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261026T174436Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Is it normal for a 996 to shut off when you disconnect the battery?
I have an 03 C4 cabrio. I�ve had it for three weeks. It's my daily. I had the battery out week one to install an amp. Yesterday on the way home the dash went nuts and everything died. I got it home and had to remove the bumper to get to the cable and pop the trunk. My ground had come off the battery. Everything else I've ever known will run all day with the batt disconnected. Is this normal or should I be looking for alternator/regulator issues?
Thanks,
Kevin
No car should be run without a battery. It is a critical component in maintaining a consistent voltage output from the alternator. The newer the car, the more important steady power is. Situation sounds normal.
Yeah, the battery acts like a huge capacitor. Smooths out ripples in the properly high currents that run in a modern car. Without it your voltage can be all over the place, possibly damaging sensitive electronics.
Coincidentally, I was researching this today, as I had a completely dead battery that I was unable to jump. The modern cars of today (and yesteryear) rely too heavily on electronics and you can no longer safely run a car without a battery in a pinch. Check out post #4 here for tips on how to check whether it is your battery or your alternator that needs replacing:
https://rennlist.com/forums/996-foru...placement.html
I've seen guys pull a battery cable off a car while it was running ,every led light in the vehicle blew out from the elect surge .It was not good,especially since the car belonged to a popular radio D J .He was without his car for a month ,but didn't blast the shop to bad.
Really? Because I have never known any automobile to run all day with no battery connected. I have owned at least 12 cars, probably more. As others have stated, Porsche 996 needs your battery to be in the car and connected to run.
The real issue here is your first modification was to install an amp. To muffle the noise of that annoying flat six? since your ground cable was actually disconnected seems like an easy fix and you're back on the road again.
This is a source reference. Confirm exact model applicability in the original material.
