7 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHUnusual 986 intermittent cutting out problem - Page 1 - Boxster/Cayman - PistonHeads UK
Leading reported evidence
Check battery and connections/grounds
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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
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 · Original poster
I think the list will be tilt switch replacement, check battery and connections/grounds, replace the ignition switch and the alarm module under the passenger seat.
Unusual 986 intermittent cutting out problem - Page 1 - Boxster/Cayman - PistonHeads UK
Read full discussion summary
Leading evidence: 'Check battery and connections/grounds' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check battery and connections/grounds' (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 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
I'd be looking at the battery terminals, the strength of the battery itself, and for a bad earth, then checking fuel pressure.
Unusual 986 intermittent cutting out problem - Page 1 - Boxster/Cayman - PistonHeads UK
Check passenger one
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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
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
Check passenger one under the seat, it's where all the electronics are.
Unusual 986 intermittent cutting out problem - Page 1 - Boxster/Cayman - PistonHeads UK
Replace ignition switch and the alarm module
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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
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 · Original poster
I think the list will be tilt switch replacement, check battery and connections/grounds, replace the ignition switch and the alarm module under the passenger seat.
Unusual 986 intermittent cutting out problem - Page 1 - Boxster/Cayman - PistonHeads UK
Run though until it stops
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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
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 · Original poster
It can cut out when on the move or when stationary, i did notice when it cut out whilst parked that doesn't just stall it's as if the fuel pump has stopped and it lets the fuel run though until it stops.
Unusual 986 intermittent cutting out problem - Page 1 - Boxster/Cayman - PistonHeads UK
Frequently discussed actions (5)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check battery and connections/grounds
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 · Original poster
I think the list will be tilt switch replacement, check battery and connections/grounds, replace the ignition switch and the alarm module under the passenger seat.
Unusual 986 intermittent cutting out problem - Page 1 - Boxster/Cayman - PistonHeads UK
Replace ignition switch and the alarm module
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 · Original poster
I think the list will be tilt switch replacement, check battery and connections/grounds, replace the ignition switch and the alarm module under the passenger seat.
Unusual 986 intermittent cutting out problem - Page 1 - Boxster/Cayman - PistonHeads UK
Run though until it stops
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 · Original poster
It can cut out when on the move or when stationary, i did notice when it cut out whilst parked that doesn't just stall it's as if the fuel pump has stopped and it lets the fuel run though until it stops.
Unusual 986 intermittent cutting out problem - Page 1 - Boxster/Cayman - PistonHeads UK
Coverage and how to read this overview
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.
7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
PistonHeads: 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: 20261026T190023Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi,
I need some help / advice with an intermittent problem.
We have a 99 2.5 tip and it intermittently cuts out but restarts no problem. When the car cuts out the interior light comes on and the hazards flash quickly but no siren. It can cut out when on the move or when stationary, i did notice when it cut out whilst parked that doesn't just stall it's as if the fuel pump has stopped and it lets the fuel run though until it stops. It's as if a an alarm tilt switch is intermittently failing that cuts the fuel pump or it thinks it's had an accident and cut the fuel pump???
Can anyone shed any light of what might be causing this?
Thank-you in advance
I'd agree that it sounds like a fuel pressure problem, but the flashing of the hazards etc, is like something electrical is briefly being cut and then restored. It's the kind of thing you get when you turn off the alarm and open the door. I'd be looking at the battery terminals, the strength of the battery itself, and for a bad earth, then checking fuel pressure.
Porsches are notorious for doing weird things if the battery is starting to go.
Edited to add, I'm not dismissing the post by the previous poster, he well be more accurate with his theory than me.
Is your key hard to turn in the ignition? Faulty ignition switch or worn ignition mechanism can give rise to weird electrical gremlins.
I proactively replaced mine yesterday - £150 part from OPC and about 3 hours work to get it swapped out - only basic tools needed to diy but also some patience.
Details of problem/symptoms here:
https://www.pelicanparts.com/techarticles/Boxster_...
Thankyou for the replies,
I think the list will be tilt switch replacement, check battery and connections/grounds, replace the ignition switch and the alarm module under the passenger seat.
tr7v8 said:
Are the carpets dry
This.
Central locking started going mad on mine while driving along...
Check passenger one under the seat, it's where all the electronics are.
If it's wet get the seat out and carpet out with sound proofing, (a massive sponge at this point.)
Then remove the black box and dry out / clean etc etc.
This is a source reference. Confirm exact model applicability in the original material.
