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YOUR RESEARCHNo start or crank advise - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Leading reported evidence
Check battery wires
Performed · outcome unconfirmed
No successful repair reported for this finding.
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0
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1
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No start or crank advise - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Check battery wires' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check battery wires' (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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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 · Original poster
Checked for codes using a Durametric (no codes stored)
No start or crank advise - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Check relevant fuses (e1,b8, c1, c2, and c4)
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0
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0
Unsuccessful attempts
1
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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.
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Performed · outcome unconfirmed · Original poster
Checked the relevant fuses (E1,B8, C1, C2, and C4)
No start or crank advise - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Check starter ground wire in the engine bay
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Discussions that performed work without a confirmed outcome
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No start or crank advise - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace cps
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Performed · outcome unconfirmed · Original poster
My battery was reading 11.4 volts after I replaced the CPS.
No start or crank advise - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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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.
20 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 1 discussions
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Generation: 20261026T203514Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi Boxster family!
I was wondering if anyone can just help me go over my troubleshooting steps (I've searched previous forum posts). My 2004 Boxster 550SE will not turnover. For the past month or so it would take longer and longer to crank over (I know this is a common issue due to heat soak). A few days ago it quit turning over. So far I've:
Had the battery load tested
Checked the Battery wires
Checked the relevant fuses (E1,B8, C1, C2, and C4)
Jumped the clutch safety switch
Jumped the starter relay in the rear trunk
Checked the starter ground wire in the Engine Bay
Replaced the Crankshaft Position Sensor again (I had replaced this a year ago)
Checked for codes using a Durametric (no codes stored)
Any steps I've missed or what to check next? (I haven't a 2004SE so it has a newer ignition setup so I haven't replaced the ignition switch)
My battery was reading 11.4 volts after I replaced the CPS. I'm currently charging it.
If charging the battery doesn't work my next step is to change out the starter. Is this the next step I should do?
Thank you!
Hi Gilles,
Yessir, I checked it twice. Once the is battery is done charging I'll unbolt it completely from the chassis and reattach it to triple check. Thanks for the suggestion!
Thanks
The next thing you need to do is a "VOLTAGE DROP TEST"
If you don't know how to do it go to "YOUTUBE" and study up on how to do it.
The starter may or may not be the issue.... a "voltage drop test will tell you if it is or is not the issue.
No sense pulling the starter just to find out it is not the problem.
With a "Voltage drop test you can test the entire starting circuit as well as the starter with everything in place.
All you need to do the test is a Digital Voltage Meter and the know how.
Many times removing and or replacing good parts or connections creates more problems then it solves.
Try to isolate and identify the problem before attempting to fix it.
Thank you all for your suggestions. I did charge the battery (and tried jump starting the car with another running car) and the car still will not even crank. When I attempt to crank the car the tach gauge doesn't even move (which I thought might indicate a bad CPS, which I've replaced. The next steps are to to a voltage drop test on the starting system. I might as well pull the starter since to test the full system I'll need to access the connections on the starter. Anything else I might look at before I start testing the starter?
Haha guess so! My question is would a fuel system issue cause the engine to not turn over at all? The engine doesn't crank and the tach gauge doesn't move at all. The car was running fine except for an issue over the past week where it would be slow to crank when hot.
Thank you JFP in PA!
Many years ago, my 987CS was having a similar issue and the culprit end being the positive battery cable, where attaches into a connector right at the firewall.
I did a quick test of the fuel pump by removing the relay and bypassing it with a jumper. I can hear the fuel pump turn on, still same issue.
Gilles, thanks for your suggestion. I do recall reading your post about it. I'll take a further look.
The CPS is a Hall effect sensor so it will not generate a signal if the engine is not spinning.
So you will not see anything at the tach. if the engine will not spin.
The fuel system has nothing to do with the starter circuit.
You stated that the engine cranked over slower when it was hot.
That is a strong indication of high resistance in your starter circuit.
Resistance can be caused by corrosion in the wires, cables, or connections of the circuit.
That resistance increases with heat soak.
The same can be true of an issue with the starter it's self.
So if you do a proper "voltage drop test" that test will tell you where the voltage is dropping out of the circuit.
But the test has to be done "correctly" that is why I suggested looking up how to perform the test on Youtube.
Hi All,
Thank you so much for all the advice. I learned a lot these past few days (how to bypass a relay, do a load test, etc.) I was able to start the car after replacing the starter.
Thanks!
