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  1. #1
    Junior Member Two Rings
    Join Date
    Nov 19 2024
    AZ Member #
    997832
    Location
    Minnesota

    Clutch/Transmission Making Strange Noises and doing weird things. What's broken!?

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    I've got a 2008 Audi S5 with 125,000 miles on it and recently it has started to behave worse and worse until more recently it started making noise and feeling sluggish. The symptoms I have noticed and when they are most noticeable are as follows.

    The clutch pedal has very little feedback/"feel": gets worse as the car gets warmer.

    "Rev Hang" When up shifting. The RPMs do not drop quickly after the clutch pedal is depressed and you go to shift gears. (It's super annoying because by the time you have shifted and are ready to drop the clutch the RPMs have barely dropped at all making it very hard to drive): Does not happen/is not noticeable when the car is cold but as it warms up it starts to become noticeable and eventually becomes a problem.

    The clutch pedal "sticks" or "jumps" as you let off the pedal. It is not linear or consistent when lifting off the pedal to engage the clutch: Becomes more noticeable/more of an issue as the car gets warmer.

    The car feels "sluggish" or slower than normal: Car feels slower when its colder but as it warms up it gets better (still not as good as it used to be)

    The car makes a "rubbing" or mechanical "humming" noise that is louder than usual: Is most audible in gear one and progressively gets quieter as you shift to 6th gear. Also is louder when the car is cold but as it warms up it becomes less audible and less apparent. (We thought it was caused by low transmission fluid so we flushed the old fluid out and put in new fluid making sure to top it off but that did not fix it)

    The car makes a "Ticking" sound whenever the clutch is engaged: Gets louder as the car warms up and is audible in neutral. It is also audible in first gear but beyond that I have not noticed it (I'm pretty sure that it is still making the ticking noise beyond 1st but road noise and other noise might be drowning it out) THE NOISE STOPS SHORTLY AFTER THE CLUTCH PEDAL IS DEPRESSED AND THE CLUTCH IS DISENGAGED

    Here is a YouTube link to both noises being made https://youtube.com/shorts/iDoMvKeGJVI?feature=share. Make sure you turn up your volume so you can actually hear it.

    I really don't know what is causing these symptoms so if you have any theories or information regarding any of the symptoms I listed above please let me know. I can check anything you want me to check if you want more information and I will be active on this form so please give me any insight that you have regarding my issue.

  2. #2
    Junior Member Two Rings
    Join Date
    Nov 19 2024
    AZ Member #
    997832
    Location
    Minnesota

    Oh, one more thing I found out after I posted this is that there is a ton of gasoline in my oil and the oil level is way higher than what I filled it too when I did my oil change a bit ago. This confirms that my injectors are leaking and if you watched that yt video that I posted above with that link and noticed the engine light that was on in the videos its likely that the misfires that are causing that CEL are caused by those leaky injectors. At least that's one mystery solved.

  3. #3
    Veteran Member Three Rings shokwav09's Avatar
    Join Date
    Jul 26 2009
    AZ Member #
    45560
    My Garage
    hhr, 2013 rs5
    Location
    kansas city, missouri

    if gas is in the oil you have either bad valve seating or worn piston rings and youre losing detonation. you ever used gas to clean engine parts? thats whats happening inside your motor. at 125k miles its prob due to poor gas selection and or lack of maintenance. so rebuild it or find a used motor to replace it.
    I wanna do a burnout at heavens gate in an audi

  4. #4
    Junior Member Two Rings
    Join Date
    Nov 19 2024
    AZ Member #
    997832
    Location
    Minnesota

    Quote Originally Posted by shokwav09 View Post
    if gas is in the oil you have either bad valve seating or worn piston rings and youre losing detonation. you ever used gas to clean engine parts? thats whats happening inside your motor. at 125k miles its prob due to poor gas selection and or lack of maintenance. so rebuild it or find a used motor to replace it.
    I understand where you are coming from on the worn piston rings and I definitely hope that isn't what it is. It never burned oil and still doesn't so I don't think the piston rings are bad but it could be possible I guess. I'm definitely confused by your point about a bad valve seating since the car is direct injection. Not sure how a bad valve seating in a direct injection car would cause gas to leak into the oil. definitely gonna have to get an explanation on how that works.

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