20 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHBoxster Died - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Reported or suspected cause
fuel pump
Reported cause
No successful repair reported for this finding.
1
Identified cause
1
Suspected cause
0
Reported fixes
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1
Discussions that suspect a cause
1
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Reported cause
Same thing happened to my '99 and it was the fuel pump.
Boxster Died - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'fuel pump' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'fuel pump' (1 discussions; 1 report identifying it and 1 suggest it). The most frequently discussed action is 'Check fuses too' (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.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
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 suspect a cause
1
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Suspected cause
If it seems to be heat related it's probably the CPS.
Boxster Died - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Check fuses too
Suggestion or failed attempt
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Unsuccessful attempts
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Discussions
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Discussions that contain suggestions
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Boxster Died - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace every couple years
Suggestion or failed attempt
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0
Reported fixes
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Unsuccessful attempts
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Discussions
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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 was reading something the other day and it mentioned a good idea to change every couple years.
Boxster Died - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Test ' (put a finger
Suggestion or failed attempt
No successful repair reported for this finding.
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Unsuccessful attempts
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Discussions
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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
If not, check the fuel pump relay, you can jumper the relay or do the 'click test' (put a finger on the relay and feel if it clicks when you turn over the car).
Boxster Died - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Test ' (put a finger
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 not, check the fuel pump relay, you can jumper the relay or do the 'click test' (put a finger on the relay and feel if it clicks when you turn over the car).
Boxster Died - 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
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: 20261027T060112Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
On way to work this morning and car just stalled. Was able to coast into a parking lot. Tried to start it up. All that happens is engine cranks but doesn't turn over. Engine sounds fine when it cranks.
Any ideas? I am thinking fuel pump.
Thanks
Dan
Same thing happened to my '99 and it was the fuel pump. Be sure to change the fuel filter, if it is the pump, as the pump sometimes pukes out metal particles, when it goes, that are lodged in the filter.
I just Googled your issue and came up with three possibilities;
I would start with the fuel pump relay, then the fuel pump and lastly the crankshaft position sensor.
Good luck and keep us posted.
It was so sudden, that's my first thought too. Pump relay. Could also be the pump, but they usually make a fair amount of noise when they're near death. Did you notice any buzzy humming or low howling noise coming from the tank area recently?
The relay can be jumpered to get things going and test. I will try to find a picture for you.
Fuel filter in under that car about there the E-brake handle is. a PIA to do as the belly pan has to come off. and a bunch of stuff has to be loosened.
Fuel pump is in the tank up front...I think.
Jump the relay and see if you hear it. Check all fuses too.
This relay is under the dash.
I recently had a similar issue, which was the CPS (crankshaft position sensor). They tend to fail when hot, but work when they cool down, and rarely throw a code. If it seems to be heat related it's probably the CPS.
If not, check the fuel pump relay, you can jumper the relay or do the 'click test' (put a finger on the relay and feel if it clicks when you turn over the car). If it's not one of those, pressure test the fuel system. If the pressure is low, then it is probably the fuel pump.
You can do a preliminary fuel pressure test, which is very unreliable, by taking the fuel cap off, and have someone turn over the car and listen for a whistling/sucking sound. If you don't get one, there is no pressure being created. You could also try replacing your gas cap, if the o-ring is bad there could be a pressure issue.
Best of luck!
Yeah there was not humming or any out of the ordinary sound coming from anywhere.
It happened about a mile from my house so I wouldn't think it was a heat issue. It also sat for a while before the flat bed got there and I tried it again when I got it home. Nada.
Bought a new fuel pump relay. Car still doesn't start. That didn't works.
I am also pretty sure that I hear the fuel pump whirring she turn the key to the on position.
There's a silver rail on the passenger side. At the rear of that is a black cap. Take that cap off and it's a Schroeder type valve. Turn the key on but not start car, and put a rag over it and push the valve in gently. It's under significant pressure if the FP is working.
From my research, the 986 doesn't use a regular Schroeder valve. However, the Actron CP7838 with a 0180-000-1299 adapter will fit.
http://www.renntech.org/forums/topic/17297-testing-fuel-pressure/?p=87886
To use a generic fuel pressure tester, you may need an adapter M14x1.25 to M15x1.5
If all you need to do is test for the presence of fuel and test on a COLD engine ,the rag method should be O.K.
