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Registered User
Join Date: Nov 2005
Location: Lyons, Colorado
Posts: 86
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Low speed grumbling - not cornering
Around 25mph, I get a loud growl from my drivetrain somewhere. I mostly notice it on decel, but I'm not cornering or reversing. It happens when driving through a 25mph zone or when braking. It seems to be independent of clutch or RPM (I get it when doing 25 in 2nd at 2K or in 1st at 3500). Since it's not cornering, I don't know if it's the LSD or something else. I can't recall if it's always done this or not. If it's just starting, it's been gradual. The car has 100k on it. I bought it at 95k. Clutch was replaced at 65k. The rest of the drivetrain is original.
Thanks for any ideas.
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Chris Cope 91 911 Turbo Lyons, Colorado |
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11-08-2006, 07:47 AM
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Join Date: Jul 2005
Location: Reno NV, Bay Area during most weeks,, Kids still in NH
Posts: 5,888
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Wheel bearing perhaps ?
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"Todd" 98 Tahoe ,2007 Saturn Vue 86 930 black and stock, 80 930 blue tracdog 91 Spec Miata (yeah I race a chick car) "life"ll kill ya" Warren Zevon |
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11-08-2006, 09:04 AM
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Location: Lyons, Colorado
Posts: 86
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It seems to be from both wheels equally. I've been doing a lot of research on the bearing replacement and it sounds like something I don't want to do for the fun of it. I think I'll jack it up and make sure it's not tire noise.
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Chris Cope 91 911 Turbo Lyons, Colorado |
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11-09-2006, 09:29 AM
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Forced Induction Junkie
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High mileage CV joints will do a low pitched growl upon decel early on then get worse over time. Check CV bolts on both ends to make sure it's not just loose bolts.
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Dave '85 930 Factory Special Wishes Flachbau Werk I Zuffenhausen 3.3l/330BHP Engine with Sonderwunsch Cams, FabSpeed Headers, Kokeln IC, Twin Plugged Electromotive Crankfire, Tial Wastegate(0.8 Bar), K27 Hybrid Turbo, Ruf Twin-tip Muffler, Fikse FM-5's 8&10x17, 8:41 R&P |
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11-09-2006, 09:50 AM
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Registered
Join Date: Jul 2005
Location: Reno NV, Bay Area during most weeks,, Kids still in NH
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Front wheel bearings and CV joint are both easy DIY projects.
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"Todd" 98 Tahoe ,2007 Saturn Vue 86 930 black and stock, 80 930 blue tracdog 91 Spec Miata (yeah I race a chick car) "life"ll kill ya" Warren Zevon |
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11-09-2006, 11:11 AM
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Registered User
Join Date: Nov 2005
Location: Lyons, Colorado
Posts: 86
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Yeah, but rear wheel bearings aren't. Not that I won't if it needs it.
CVs probably need a good inspection anyway. It's been at least 35k since they were done, if they were even done then. I guess I forgot to mention that the rumbling seems to be coming from the rear.
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Chris Cope 91 911 Turbo Lyons, Colorado Last edited by loot87; 11-09-2006 at 01:32 PM.. |
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11-09-2006, 11:25 AM
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1985 Porsche 930 Fac. Slantnose 3.3l
