8 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
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Discussion summary
YOUR RESEARCHsluggish drive
Reported repair
Replace battery, left
Reported resolution
1
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0
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Discussions that report a fix
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Reported fix · Original poster
Replaced battery, left for a minute with ignition in the on position, then off for 10 seconds, then turned engine over for 5 minutes. Everything was sorted, no more issues and car has been driving well for the last couple of weeks.
Leading evidence: 'Replace battery, left' (1 discussions report resolution; 0 report an unsuccessful attempt). Across 1 matching discussions, the most frequently mentioned possible cause is 'coils as mentioned' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace battery, left' (1 discussions). For that action, 1 discussions report a resolution and 0 report an unsuccessful attempt. The most frequently reported fix is 'Replace battery, left', supported by resolution reports in 1 discussions. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed · Original poster
Only job i have had done recently is a replaced variocam solenoid (passengers side).
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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Suspected cause
I've had this a couple of times and it's most probably the coils as mentioned.
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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Suspected cause
The only way to tell which coil it was though was to put it on a conzult diagnostic machine, I suspect your looking at a similar thing on this to identify the offending cylinder / piston no coil pack as Richard suggested.
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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Suggestion
If it's happening when wet, it could parhaps be worth checking the MAF?
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Replace battery, left
1
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that report a fix
1
1 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Reported fix · Original poster
Replaced battery, left for a minute with ignition in the on position, then off for 10 seconds, then turned engine over for 5 minutes. Everything was sorted, no more issues and car has been driving well for the last couple of weeks.
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
On a cheap car you could disconnect the plug to the MAF and see if it made any difference to the running, as if it's faulty or sending a dodgy signal it would put the car in a limp mode at the ECU level anyway, if it's disconnected it would have no effect if it is faulty.
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.
Suspected cause
The only way to tell which coil it was though was to put it on a conzult diagnostic machine, I suspect your looking at a similar thing on this to identify the offending cylinder / piston no coil pack as Richard suggested.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Replace battery, left
1
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that report a fix
1
1 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.
Reported fix · Original poster
Replaced battery, left for a minute with ignition in the on position, then off for 10 seconds, then turned engine over for 5 minutes. Everything was sorted, no more issues and car has been driving well for the last couple of weeks.
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.
8 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Club GB: 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: 20261027T025149Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi everyone,
For some reason my engine management warning light was coming on when i started the car. Flashed for about ten seconds then went fully on. Car is very sluggish.
To remedy, i removed the battery, charged up as it was flat after leaving for some time. Replaced battery, left for a minute with ignition in the on position, then off for 10 seconds, then turned engine over for 5 minutes. Everything was sorted, no more issues and car has been driving well for the last couple of weeks.
However, during some heavy rain this morning I decided to take the car for a drive and the old issues have returned. Car very sluggish with poor tickover, engine management light flashing for approx 10 seconds, then fully on. Does anyone have any ideas!!
Only job i have had done recently is a replaced variocam solenoid (passengers side). The car is due a service soon. I seem to remember that the last time it had this issue, it also rained hard.
Thanks.
I'm not familiar with the engine yet, but I've done quite a few repairs on other engines.
If it's happening when wet, it could parhaps be worth checking the MAF?
I've seen them go on quite a few cars, and the most common I have seen is water getting into the intake, getting the filter wet and the moisture killing the maf. Symptoms tend to include cars going into 'limp' mode and not exceeding a certain RPM, and or generally running like a bag of spanners almost as if the engine is missing on a cylinder and has a huge loss in power.
Just a thought.
The only real way to tell is to read the output values with a Porsche tester.
As it happened when it was wet, I would agree with Alan that it is more likely to be a col pack (or packs).
A diagnostic check should tell you what's wrong.
On a cheap car you could disconnect the plug to the MAF and see if it made any difference to the running, as if it's faulty or sending a dodgy signal it would put the car in a limp mode at the ECU level anyway, if it's disconnected it would have no effect if it is faulty. But I don't think I would recommend it on something more expensive like the porsche motor.
I've had coilpacks go on the Z as well, the obvious sign is the offending coil resulting in there being no firing on that cylinder. The car also sounded more like a subaru! You could tell it was missing by the sound and the power would be down. The only way to tell which coil it was though was to put it on a conzult diagnostic machine, I suspect your looking at a similar thing on this to identify the offending cylinder / piston no coil pack as Richard suggested.
I've had this a couple of times and it's most probably the coils as mentioned. But you need to connect to a Porsche tester.
But seriously, your first reaction to a CEL is to disconnect the battery? [&:]
Cheers everyone. I keep promising to get the car serviced. Probability is a coil. Funny though that car is driving ok again as long as it doesnt rain too hard. Hopefully the service will sort things out.
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