15 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH911 2001 Tickover rising and falling , hunting ?
Leading reported evidence
Check either
Suggestion or failed attempt
No successful repair reported for this finding.
0
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0
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1
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Read evidence and context
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Suggestion · Original poster
thats good news then, how can i check for either ?
Leading evidence: 'Check either' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check either' (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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Suggestion
You'll need a garage to check your MAF as they'll need to plug in the diagnostic computer, re the plenum, i'll try and dig out a thread and post, but essentially remove the big pipe connecting the air filter and have a look inside to see if it has the carbon build up.
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 · Original poster
ok MAFS off, im a complete maf novice so which bit exacty do I squirt and clean > theres a resistor on one side and some small wires in a gap..
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
You can buy the cleaning alcohol at Maplin if that helps.
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.
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
You'll need a garage to check your MAF as they'll need to plug in the diagnostic computer, re the plenum, i'll try and dig out a thread and post, but essentially remove the big pipe connecting the air filter and have a look inside to see if it has the carbon build up.
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
Thanks GT4, just one thought, dont shoot me down in flames, however, I filled her up with std unleaded, could this cause these probs or is it ok to run these cars on normal std fuel?
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.
15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
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Generation: 20261027T064914Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Just come back from a nice drive, cars a dream drives like a dream acclerates well, goes very well, fast.. came home, hit some lights, sat at the lights and i noticed the tickover was wavering between 400 and 1000 revs, sort of going low, then revving up, then going low then revving up? most weird, any ideas what this could be ? do these cars have main air flow sensors that can be a problem, the cars donw 121k and had a major service at porsche at 119k ..
thanks
You'll need a garage to check your MAF as they'll need to plug in the diagnostic computer, re the plenum, i'll try and dig out a thread and post, but essentially remove the big pipe connecting the air filter and have a look inside to see if it has the carbon build up.
excellant ill have a look tomorrow, can I clean it with CRC AIR SENSOR CLEANER and a cotton bud or cotton wool ? ill pop to local auto store and buy some in the morning..
incidently the cars fine when it first starts, and runs, only seems to do it when warm
moss,
Take a look here (re: cleaning MAF with IPA - isopropyl alcohol):
http://www.911uk.com/viewtopic.php?t=47355
http://www.911uk.com/viewtopic.php?t=51971
Thanks GT4, just one thought, dont shoot me down in flames, however, I filled her up with std unleaded, could this cause these probs or is it ok to run these cars on normal std fuel?
Just remind me what it says in the inside of the petrol flap?
The lower octane may make the ECU more sensitive to a dirty MAF as it will have advanced the ignition to mitigate pinking and engine overheating.
The engine will run fine (if not be the happiest and certainly with loss of power) with 95 RON.
Hi
You can buy the cleaning alcohol at Maplin if that helps. Also I have had 3 cars before (not porsche) that used to rev up and down in the manner you describe if they were low on water.
Berni
just been to my local maplins they had no ipa in stock ! so i drove to a motor factors whom reccomended contact cleaner by Comma
do you think this will be ok ?
says on side of tin
Fast acting formula , just spray on .Instantly removes oxidation and immdiately restores the electrical current.Non corrosive properties wont harm plastics , non conductive with no residue,no need to wipe away excess.
Just been on blower to Comma and there techy guys who told me yes it contains 10-30% IPA and pointed me towards this contents page which states the contents as :-
ok MAFS off, im a complete maf novice so which bit exacty do I squirt and clean > theres a resistor on one side and some small wires in a gap..
heres the resistor
or this little wire in here
thanks..
incidently the bloody things not doing it now ! could I have a self cleaning maff !
