6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHRPM's dropped a fraction when in Idle?
Leading reported evidence
Replace (drops)
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
I can feel the idle changes (drops) when the fans kick in.
Leading evidence: 'Replace (drops)' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace (drops)' (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.
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.
6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 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: 20261027T184158Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
So, not sure if I'm in "panic" mode again OR just being extremely observant OR that I have now had the C4S for such a long time that I notice the smallest of things that I didn't see/hear/notice before?
It seem like the RPM's have dropped a tiny bit from around 800 to 750/700 RPM when in idle.
I noticed when driving alone for the first time a week ago (having a plastic bag on the passenger seat next to me - vibrating quite a bit more than what I thought it would do) and saw that the RPM's had dropped a fraction from about 800 to 700 when in Idle. There was no indication/feel of the engine wanting to stall and it runs homogeneous, the oil level is as it should be, temperature bang on 80degC and oil pressure between 2 and 5 depending on acceleration/speed so all seems fine. Only thing is that the aircon is not working (no cold air) and don't know if this has something to do with it but I have it set to off anyway...
The idle didn't seem as smooth as it used to if it makes sense. Most people would probably not have noticed at all but I did???
Any input would be great if anyone knows what this could be (if anything)?
Thanks,
Frank996
So basically this means that the AC compressor has had it? I always start the engine without any electricals on (i.e. the Aircon) so it shouldn't really make a difference right?
When it happened, were the engine cooling fans running? I can feel the idle changes (drops) when the fans kick in. The vibration at idle could be deteriorating engine mounts.
