Crown

Board: Porsche - 911 - 997 Language: English Region: Worldwide Share/Save/Bookmark Close

Forum - Thread


    Passenger Seat Vibration

    Hello,
    Took the 997 out for a nice spirited 180 mile trip through the hills, and for some reason, the car (only 15K now on it) seems to be running a bit "rough" - perfect weather conditions, not too hot or cold. Just had the 2 year service on it about 1 month ago, even though it had not reached 20K miles. One thing that I had not noticed before while sitting at a train crossing was that the passenger seat vibrates like crazy at idle. I mean, it's really moving more than I think it should, so this got me thinking, is it possible I may have worn out engine mount(s) already, even if they were not detected in the 2 year service. I presume, like most modern cars, you cannot visually inspect these...are they filled with gel perhaps?

    Anyone else with a similar experience or do all 997's vibrate like this? I'm thinking of going to the dealership on Monday to sit in some other cars and see if they are similar. Thank you.

    Re: Passenger Seat Vibration

    My car has always had a "choppy" type of idle. The tach needle is stable, but the car shakes a bit randomly at idle. Nothing violent, just "sporty". I've had many people tell me this is normal, and my car performs beautifully, so I'm not worried about it. Others apparently have a calmer idle. Let me know what you find out.

    Peter

    Re: Passenger Seat Vibration

    Mine does it too (but not when someone is sitting in it).

    Gaz

    Re: Passenger Seat Vibration

    Mine does too, as did my 996...

    Re: Passenger Seat Vibration

    Passenger seat vibration is usually an option... I guess you got that one for free. Hope your wife likes it

    Re: Passenger Seat Vibration

    They all do that at idle, even my old 996 (as pointed out in an earlier reply). You will notice that if you turn on the AC and the vibration goes away as this ups the idle by a few revs.

    there is nothing wrong with your car

    Re: Passenger Seat Vibration

    How very interesting - so it's more common than I thought. Thanks everyone for the feedback.

    Great answer Ludikis! I'll have to share that with her.

    I see what you mean about the uptick in the rpms from the A/C or throttle, did that this morning, it does seem to smooth it out a bit...

    Going to make a quick stop at the dealer to see if they notice anything else that might be causing this...if normal...great, if something else comes up, I'll share it with you.

    Re: Passenger Seat Vibration

    Quote:
    Vegas said:
    My car has always had a "choppy" type of idle. The tach needle is stable, but the car shakes a bit randomly at idle. Nothing violent, just "sporty". I've had many people tell me this is normal, and my car performs beautifully, so I'm not worried about it. Others apparently have a calmer idle. Let me know what you find out.

    Peter



    Just a wild guess, but could this be related to the fuel you are using?

    Try to tank up with the best grade of fuel you can get locally and pay particular to whether the engine idle appears to improve.

    Re: Passenger Seat Vibration

    Ditto, vibrates when the car is idle.

    Re: Passenger Seat Vibration

    vibrates at idle with the best Californian fuel (91 octane)

    Re: Passenger Seat Vibration

    Feedback from the dealership:

    The vibration I am seeing in the seats is completely normal per the tech advisor and service manager. We looked at a new 2007 C2S for comparison, no other 2005 models on the lot at the moment, however there is very little vibration in the 2007 model, so maybe it's unique to the year, and they've sorted out the "bug" by now.

    Have always run the highest octane available, either 91 or 93...so, I'm assuming it's a small design issue, maybe all sports cars are just a bit "edgy".

    Thanks.

    Re: Passenger Seat Vibration

    Seat vibration! Now I know why the chicks dig riding in Porsche's so much. And all along I thought it was my charm and good looks that turned them into putty on those long drives.

     
    Edit

    Forum

    Board Subject Last post Rating Views Replies
    Porsche Sticky The moment I've been waiting for... 5/18/22 6:36 PM
    Pilot
     
     
     
     
     
    618666 1306
    Porsche Sticky OFFICIAL: New Porsche 911 Turbo S (2020) 8/6/22 1:00 AM
    W8MM
    253364 1183
    Porsche Sticky SUN'S LAST RUN TO WILSON, WY - 991 C2S CAB LIFE, END OF AN ERA (Part II) 8/14/22 9:29 AM
    GnilM
    145424 1120
    Porsche Sticky Welcome to Rennteam: Cars and Coffee... (photos) 8/13/22 10:51 PM
    waiting for PDK
    140340 409
    Porsche Sticky Porsche Taycan Turbo S - Short Review 8/10/22 8:51 PM
    WhoopsyM
    121552 538
    Porsche Sticky OFFICIAL: Cayman GT4 RS (2021) 1/15/22 10:41 PM
    watt
    58733 1
    Porsche Cayman GT4 10/5/21 7:04 PM
    Topspeed
    548067 3587
    Porsche OFFICIAL: 911 GT2 RS (2017) 9/28/21 3:25 AM
    WhoopsyM
    457276 3507
    McLaren McLaren on a winning streak 2/1/22 10:14 PM
    SSO.
    453980 3954
    Porsche OFFICIAL: 991.2 GT3 RS (2018) 11/17/21 5:18 PM
    Rossi
    419675 3256
    Porsche OFFICIAL: 911 R (2016) 2/1/22 9:49 AM
    RCA
    408385 2655
    Porsche 992 GT3 8/14/22 1:48 AM
    Wonderbar
    393426 3695
    Porsche OFFICIAL: The new Porsche 992 – a design icon and high-tech sports car 9/29/21 1:59 AM
    watt
    318439 1587
    Porsche Welcome to the new Taycan Forum! 7/30/22 11:46 AM
    Wonderbar
    167499 1446
    Porsche Donor vehicle for Singer Vehicle Design 2/10/22 9:08 PM
    Topspeed
    165451 772
    AMG AMG GT R 3/13/22 8:52 PM
    spudgun
    138545 834
    Lambo Aventador and SV 5/20/22 5:24 PM
    Topspeed
    135094 710
    Others Tesla 2 the new thread 8/11/22 11:47 PM
    WhoopsyM
    124995 1767
    Porsche GT4RS 8/16/22 9:35 AM
    reginos
    117980 1053
    Motor Sp. [2021] Formula 1 4/19/22 10:08 PM
    Leawood911
    102234 1590
    Others Bugatti Chiron 4/12/22 9:24 PM
    blueflame
    100401 520
    Ferrari Ferrari 812 Superfast 6/12/22 5:09 PM
    watt
    97831 535
    BMW M BMW M2 Rumors 2/28/22 7:42 PM
    Topspeed
    86915 409
    Porsche Red Nipples 991.2 GT3 Touring on tour 8/11/22 3:03 PM
    Enmanuel
    81103 489
    Lambo Urus (SUV) 6/7/22 1:20 PM
    Topspeed
    80922 593
    Porsche Dave and Gnil @ Nürburgring Nordschleife 7/4/22 10:42 PM
    DaveGordon
    79712 722
    Others Corvette C8 7/18/22 12:40 PM
    WhoopsyM
    77340 443
    Motor Sp. [2022] Formula 1 8/12/22 12:49 PM
    CGX car nut
    57933 1202
    Others Toyota Yaris GR 4/13/22 8:33 PM
    Grant
    50703 640
    Lambo Huracán EVO STO 7/21/22 8:37 AM
    RCA
    50370 335
    202 items found, displaying 1 to 30.