11 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHKnock sensor, CPS
Leading reported evidence
Replace maf and coils
Performed · outcome unconfirmed
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 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.
Leading evidence: 'Replace maf and coils' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check water channels and hoover out the leaves etc' (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.
Check water channels and hoover out the leaves etc
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
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
Oh, also I've had the battery off and tray out to check the water channels and hoover out the leaves etc that were down there.
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
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Suggestion · Original poster
On the plus side, the one minute ignition thing then switching off seemed to fix the hunting at idle since disconnecting the battery?
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
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Suggestion
If you disconnected the battery it will reset the adaption values in the DME.
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
If you disconnected the battery it will reset the adaption values in the DME.
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 read that you need to reset a few bits by turning the ignition on for one minute then turning off for 10 seconds then back on - I'll give that a go in a moment too.
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.
11 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.
1 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
I searched from the index for camshaft position sensor, cam sensor, hall effect sensor, but didn't find anything other than in the tear down section of the engine (which didn't help
Just looking for the location of both.
I've switched fuel from esso to shell vpower, and I've noticed that the car seems a little more erratic on tickover (sometimes hunts a small amount when clutch is in dropping from higher revs) and a little more lumpy tickover.
MAF and coils were replaced this year.
I can't seem to find cam position sensors or knock sensor/s locstion in the manual.
Cheers.
If you have the 1999 Service Technik [
] take a look at section 2, which describes the sensors and their location. On RoW cars there is only one cam position sensor on bank 1. US cars have two.
Oh, also I've had the battery off and tray out to check the water channels and hoover out the leaves etc that were down there.
I read that you need to reset a few bits by turning the ignition on for one minute then turning off for 10 seconds then back on - I'll give that a go in a moment too.
Cheers,
When I say RoW, I mean everywhere except the USA/Canada. So the CPS is on bank 1.
If you disconnected the battery it will reset the adaption values in the DME. The routine for switching on for 60 seconds and then off for 10 seconds only works for cars with electronic throttle, and yours has cable throttle IIRC.
Cheers - so it's on the passenger side to the rear of the engine compartment looking at the diagram you posted, but bank 1 is at the rear of the passenger side (near the pulleys?)
Any idea how to get to it? It seems it should be above the vaccum oil pump near the AOS bellow, but I've had a look around and reviewing my close up photos of that area I just can't work out where it's supposed to be and where the connector is for it.
Thanks,
Steve
It should be somewhere near the Variocam solenoid iirc. The diagram is showing the sensor on the right hand bank (bank 2) of a USA car. On yours, there will only be one, on the left hand head.
Aha! Sorry I thought you meant Cylinder bank 1, now it makes sense
If it is indeed the reverse of the one near bank 4 then it 'should' be right next to the AOS bellow - juding by the fact I can't even see it in the pictures I have taken up close, I don't think it's going to be an easy thing to get to!
On the plus side, the one minute ignition thing then switching off seemed to fix the hunting at idle since disconnecting the battery?
And yes it is a wire.
Bank one is cylinders 1-2-3 on the left side, and bank two is 4-5-6 on the right side.
I'll see if I can find a diagram of the location of the cps ......
You obviously know your way around it
I searched from the index for camshaft position sensor, cam sensor, hall effect sensor, but didn't find anything other than in the tear down section of the engine (which didn't help
). I think my failure was due to the -
Thanks
This is a source reference. Confirm exact model applicability in the original material.
