21 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHEngine won't turn over
Reported or suspected cause
seized alternator and the motor wouldn't turn a centimeter
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
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Discussions that report identifying a cause
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Reported cause
Turned out to be a seized alternator and the motor wouldn't turn a centimeter with the belt on.
Leading evidence: 'seized alternator and the motor wouldn't turn a centimeter' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'seized alternator and the motor wouldn't turn a centimeter' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check ads' (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
Check ads for Porsdche salvage businesses in Panorama and Excellence and call around.
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Suggestion
Some guy in Georgia with a small engine repair shop.
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Suggestion · Original poster
Approximately 50,000 on engine with LN bearing and oil changes every 5,000 miles.
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Suggestion · Original poster
Any thoughts would be helpful or maybe a good used engine.
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.
21 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: 20261026T120458Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
My engine would not turn over and I had the shop look at it. They said no particles in the oil but they could only manually turn the engine half way around. Approximately 50,000 on engine with LN bearing and oil changes every 5,000 miles. Appears engine toast. Anyone have this problem? My wife was driving and she said it made some noises before she pulled in. Any thoughts would be helpful or maybe a good used engine.
No metal bits in the oil, but isn't the LN bearing ceramic?
Based on what you write looks like valves and pistons are in contact at some point during a revolution.
One WAG is the IMSB stud snapped and engine cam timing off.
But it could a broken camshaft.
Or it could be something else. Regardless the odds are high the engine's toast. Up to you if you want to fund an expedition into the engine to find out more.
There are engines around. Check ads for Porsdche salvage businesses in Panorama and Excellence and call around.
+10000. Pull off the belt and see if it can turn. I didn't try that on my previous 996 when I thought the motor was toast. Turned out to be a seized alternator and the motor wouldn't turn a centimeter with the belt on.
Good news. It appears that the alternator was causing the problem and the motor turns easily once the belt was removed. The alternator was toast but appears engine is good.
This forum deserves a special thanks for the information to pull the belt off. They were quite suprised at the shop.
You didn't mention that if they could "turn it 1/2 way" they were probably turning it backwards to get the alternator sprag clutch to release and then turning it forward until it caught and stopped the engine again.
Drove it home. Runs great. I was thinking of another car but one short trip and I am hooked again. What an amazing combination of handling, power and comfort. Tough to beat for the price.
