 Steering vibration |
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| Biggles |
 Sep 28 2018, 03:37 AM
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#1
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Member  Group: Members Posts: 191 Joined: 5-September 13 From: UK Member No.: 16,353 Region Association: England  |
Hi All
Weird one this. My car has been vibrating for a few months now, around 60mph, but having now driven it a while there is a steering wheel vibration which is intermittent. It vibrates for about 10 to 15 seconds then goes away for same time, then comes back. Happens between 60 and 90, steady throttle on same road surface - very odd. Any ideas? Both front wheels have been balanced recently but that wouldn’t explain it coming and going... It’s a 70 car with 3.2 Carrera front end if that makes any difference, but can’t see how it could. |
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| TheCabinetmaker |
Sep 28 2018, 05:28 AM
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#2
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I drive my car everyday Group: Members Posts: 8,301 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Balance the rear wheels? Proper inflation on tires? Loose wheel bearing?
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| Minerva's 914 |
Sep 28 2018, 10:34 AM
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#3
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Member Group: Members Posts: 378 Joined: 24-December 15 From: Chapel Hill, NC Member No.: 19,489 Region Association: South East States 
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QUOTE(Biggles @ Sep 28 2018, 05:37 AM)  Hi All Weird one this. My car has been vibrating for a few months now, around 60mph, but having now driven it a while there is a steering wheel vibration which is intermittent. It vibrates for about 10 to 15 seconds then goes away for same time, then comes back. Happens between 60 and 90, steady throttle on same road surface - very odd. Any ideas? Both front wheels have been balanced recently but that wouldn’t explain it coming and going... It’s a 70 car with 3.2 Carrera front end if that makes any difference, but can’t see how it could. Could be the centering of the wheels on the hubs. I know it sounds weird but it happened to me decades ago and what I learned was you need to run the wheel bolts in finger tight and then spin and adjust the wheel to allow the wheel to center itself on the hub, then tighten the bolts to 90 ft pd in a star or x pattern depending on hub. |
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| AZ914 |
Sep 28 2018, 10:41 AM
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#4
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914 Dumbass Group: Members Posts: 1,459 Joined: 6-January 03 From: Sunny Tucson Member No.: 98 Region Association: Southwest Region |
I had the same problem. Check the rear trailing arm bushings.
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| Coastal6 |
Sep 28 2018, 12:06 PM
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#5
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Newbie Group: Members Posts: 47 Joined: 15-March 10 From: Florence, OR Member No.: 11,467 Region Association: Pacific Northwest |
I have found that the problem is created by having the front suspension set too low.
Try raising the front end a small amount. |
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| dr914@autoatlanta.com |
Sep 28 2018, 12:27 PM
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#6
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914 Guru Group: Members Posts: 7,885 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
yes low and tire balance and make sure that there is no play in the steering. Nothing to do with the rear
QUOTE(Coastal6 @ Sep 28 2018, 11:06 AM) I have found that the problem is created by having the front suspension set too low. Try raising the front end a small amount. |
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| porschetub |
Sep 28 2018, 02:58 PM
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#7
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Advanced Member Group: Members Posts: 4,703 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Had this on other cars,the vibration go's away when you go faster,in both cases my wheels weren't hub concentric.
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| Biggles |
Sep 29 2018, 01:24 PM
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#8
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Member Group: Members Posts: 191 Joined: 5-September 13 From: UK Member No.: 16,353 Region Association: England |
QUOTE(Minerva's 914 @ Sep 28 2018, 05:34 PM) QUOTE(Biggles @ Sep 28 2018, 05:37 AM) Hi All Weird one this. My car has been vibrating for a few months now, around 60mph, but having now driven it a while there is a steering wheel vibration which is intermittent. It vibrates for about 10 to 15 seconds then goes away for same time, then comes back. Happens between 60 and 90, steady throttle on same road surface - very odd. Any ideas? Both front wheels have been balanced recently but that wouldn’t explain it coming and going... It’s a 70 car with 3.2 Carrera front end if that makes any difference, but can’t see how it could. Could be the centering of the wheels on the hubs. I know it sounds weird but it happened to me decades ago and what I learned was you need to run the wheel bolts in finger tight and then spin and adjust the wheel to allow the wheel to center itself on the hub, then tighten the bolts to 90 ft pd in a star or x pattern depending on hub. Thanks guys for the tips. I’m on a trip at the moment and limited to what I can do, but I’ll check the wheel centering and steering column joints. |
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| bandjoey |
Sep 29 2018, 06:01 PM
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#9
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bandjoey Group: Members Posts: 4,926 Joined: 26-September 07 From: Bedford Tx Member No.: 8,156 Region Association: Southwest Region |
Bought new tires and immediately a small small vibration. Tire shop rebalanced but I still didn't like it. Had them turn the tires 180 degrees when we discovered the 'weighted side' of he tire was incorrect. Go to a new car dealer than you'll see little green stickers on tires. That needs to be exactly at the valve stem. It's to offset the heavy side of the tire with the wight of the valve stem. Might look at that. fixed my problem.
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| 914bub |
Sep 29 2018, 09:00 PM
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#10
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Member Group: Members Posts: 433 Joined: 16-August 13 From: Modesto CA. Member No.: 16,260 Region Association: None |
QUOTE(bandjoey @ Sep 29 2018, 05:01 PM) Bought new tires and immediately a small small vibration. Tire shop rebalanced but I still didn't like it. Had them turn the tires 180 degrees when we discovered the 'weighted side' of he tire was incorrect. Go to a new car dealer than you'll see little green stickers on tires. That needs to be exactly at the valve stem. It's to offset the heavy side of the tire with the wight of the valve stem. Might look at that. fixed my problem. I've never seen "stickers" but there is usually a red or yellow dot near the bead that should be aligned with the valve stem. Funny how many tire guys don't know that. |
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| Biggles |
Oct 1 2018, 05:53 AM
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#11
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Member Group: Members Posts: 191 Joined: 5-September 13 From: UK Member No.: 16,353 Region Association: England |
QUOTE(Biggles @ Sep 29 2018, 08:24 PM) QUOTE(Minerva's 914 @ Sep 28 2018, 05:34 PM) QUOTE(Biggles @ Sep 28 2018, 05:37 AM) Hi All Weird one this. My car has been vibrating for a few months now, around 60mph, but having now driven it a while there is a steering wheel vibration which is intermittent. It vibrates for about 10 to 15 seconds then goes away for same time, then comes back. Happens between 60 and 90, steady throttle on same road surface - very odd. Any ideas? Both front wheels have been balanced recently but that wouldn’t explain it coming and going... It’s a 70 car with 3.2 Carrera front end if that makes any difference, but can’t see how it could. Could be the centering of the wheels on the hubs. I know it sounds weird but it happened to me decades ago and what I learned was you need to run the wheel bolts in finger tight and then spin and adjust the wheel to allow the wheel to center itself on the hub, then tighten the bolts to 90 ft pd in a star or x pattern depending on hub. Thanks guys for the tips. I’m on a trip at the moment and limited to what I can do, but I’ll check the wheel centering and steering column joints. Tried re centering wheels on the hubs - didn’t work. Checked the steering wheel UJs too. This is going to take more investigation... |
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