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Stump the Chump
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#1
09-15-2014, 12:17 PM
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Stump the Chump
Before I provide any guesses or tear into it I thought it would be fun to collect a set of diagnoses from the Dorki Experts!
Car: 2002 Boxster S - Some Suspension Mods Driver Experience: Drives fine at and from SP HPDC to Berryville Grill with some possible spirited driving on the windy bits. Reenter Route 7 heading east to DC. Notice when making a very slight right changing lanes a rhythmic bumping noise and feel in the wheel like a wheel/tire out of balance. Particularly it felt like the front left. Goes away turning sharper right or back to straight or any left turn. After the right hand off ramp onto the Greenway it gets much worse. Applying brakes appears to lesson the effect. I pull over. Check wheel torque - all fine. Check rotors and pads for signs of a broken pad or oddity in the rotors - all appears fine. Post-Shadowing Note: Front-Left (couldn't see Front-Right) during the morning braking exercises were 'on fire' per stewards and 'showering sparks' per me watching - nothing felt/heard in wheel by driver/instructor and nothing identified as root cause at that time. Dismissed as foreign object Reenter Greenway and the out-of-balance action starts to happen while going straight anytime above 40 and trying to drive faster than the harmonic does not make it go away. Begin the long, slow drive home to DC. At some point on the Dulles Access Road it begins to be fine going straight at speed but still starts with any slight right. Brakes used to stabilize bumping. You would be amazed to know how few actual rights there are between SP and NW DC. I have some thoughts on what I am looking for but was curious if anyone has seen this before or would like to make a suggestion that could lead to a six pack of beer for the correct answer. Proposed Answers:
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Martin 2011 Cayman S (Gone) - Hardtop Blechster 2006 Cayman S (DD) 2016 Mazda CX-5 (Her DD) 2002 Boxster S (Gone) - Ragtop Blechster - Pura Patina! Dorkiphus: I buy it for the articles Last edited by N0tt0N; 09-15-2014 at 09:43 PM. 
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#2
09-15-2014, 12:32 PM
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wheel bearing?
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Carmine 1999 996 Carrera - White Pepe - 2011 Carrera S - Grey Previously: The Vaporizer 2009 Carrera Metallic Black Totaled by the Police: 2009 Carrera Black "Racing isn’t supposed to be stodgy. It’s supposed to be so goddamn wonderful batshit you can’t stand it, all noise and rumble and burning money and cavitating testicles."
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#5
09-15-2014, 01:37 PM
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CV joints make sounds when turning. Wheel bearings make sounds no matter what when its rolling.
CV joint?
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Gary Porsche Fan Skidpad Fanatical www.RoadPotomac.com 23 Ford Ranger Tremor 16 981 GT4 14 991 C2 (Gone) 10 Cayenne GTS (Gone) 02 996 Cabriolet (Gone) 79 928 Driveway Queen (Gone) 04 Ford Expedition (Gone) 07 Ford Expedition EL (Gone)
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#7
09-15-2014, 01:58 PM
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D*mn Sales Guys....
 At least no one has said: Cr*p Driver yet
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Martin 2011 Cayman S (Gone) - Hardtop Blechster 2006 Cayman S (DD) 2016 Mazda CX-5 (Her DD) 2002 Boxster S (Gone) - Ragtop Blechster - Pura Patina! Dorkiphus: I buy it for the articles
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#8
09-15-2014, 02:01 PM
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Quote:
The day is still long
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Gary Porsche Fan Skidpad Fanatical www.RoadPotomac.com 23 Ford Ranger Tremor 16 981 GT4 14 991 C2 (Gone) 10 Cayenne GTS (Gone) 02 996 Cabriolet (Gone) 79 928 Driveway Queen (Gone) 04 Ford Expedition (Gone) 07 Ford Expedition EL (Gone)
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#9
09-15-2014, 02:10 PM
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x2 for Wheel Bearing
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- Tony P. Currently - 1984 944 SP2 racer - 1977 911 KM Special vintage racer - 2012 Cayman R (also the wife's) - 2000 Boxster S (now mine) - 1995 993 (garage queen) - 2007 Cayman S (wife's track beast) - 2017 F350 (tow monster) - 2018 Jeep Wrangler Gone but not forgotten - 1989 944S2 - 1979 RX7 - 1986 944 - 1991 944S2 (in car heaven...) - 2001 Chevy Suburban 2500 (FIL's beast now)
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#10
09-15-2014, 02:11 PM
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Dropped a wheel weight or the tire slid on the wheel
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Karl Lucky owner of a few 911s and a 924... 
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