Low speed vibration
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 1,097
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From: Olive Branch MS
St. Jude Contributor
Low speed vibration
I am experiencing a vibration at low speeds of about 20-30 mph. It is not constant but comes and goes about every second or two. It vibrates the steering wheel also. When speed up it smoothes out. Have new tires on the front and had them balanced again today. It got a little better. Also just got finished having t-arms rebuilt, new spring, shocks all the way around, lined up too. I don't remember this being there before I started the t-arm job, but that was before christmas and we hadn't really driven it much before then anyway since we just got it in october. Any ideas? :confused:
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 1,097
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From: Olive Branch MS
St. Jude Contributor
Re: Low speed vibration (Fevre)
hmmm...reputable guy I had line it up said I needed to replace that. May have to do front end sooner than I had planned. :smash:
Thread Starter
Burning Brakes
Joined: Oct 2003
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From: Olive Branch MS
St. Jude Contributor
Re: Low speed vibration (brooksman9)
WOW...can't believe how much difference a new idler arm can make. Drives so much smoother now. :steering: :steering: :party: :hurray:
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 1,097
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From: Olive Branch MS
St. Jude Contributor
Re: Low speed vibration (brooksman9)
OK... the idler arm did improve the handling quite a bit, I still have the vibration. Starts about 30 mph, gets faster as I go faster, seems to level out about 50, picks back up again when you let off the gas at 50. Still sounds like something rubbing etc.....Any more Ideas? :confused: :confused: :confused:
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Pro
Joined: Jan 2004
Posts: 522
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From: Grayslake IL
Re: Low speed vibration (brooksman9)
I was having the same problem and checked everything possible, clutch, flywheel, flexplate, u-joints, driveshaft, alignment, fan clutch, pulleys, etc. Now that I have been messing with the carb. and my alt. is on the fritz, I am noticing that the engine doesn't vibrate quite so bad with a freshly charged battery, but as I loose voltage due to a crummy alt. it gets worse, probably misfiring.
Just a thought.
Just a thought.
Le Mans Master
Joined: Jun 2003
Posts: 5,135
Likes: 71
From: Umeå Sweden
Re: Low speed vibration (brooksman9)
OK... the idler arm did improve the handling quite a bit, I still have the vibration. Starts about 30 mph, gets faster as I go faster, seems to level out about 50, picks back up again when you let off the gas at 50. Still sounds like something rubbing etc.....Any more Ideas? :confused: :confused: :confused:
theres much in the steering that can be worn fore those symptoms.
i should go throught the steering and see if i found something.
could be the gears inside the steering gear box :confused:
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 1,097
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From: Olive Branch MS
St. Jude Contributor
Re: Low speed vibration (brooksman9)
OK...after a little more test driving with a friend we have determined this ids coming from the rear and not the front. I did just have the t-arms done. what to look for for this problem? :banghead:
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 1,097
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From: Olive Branch MS
St. Jude Contributor
Re: Low speed vibration (brooksman9)
Well...I just noticed one of these back wheels has no weights on it. I wonder if that could be the problem :crazy:
Safety Car
Joined: Jan 2000
Posts: 4,143
Likes: 0
Re: Low speed vibration (brooksman9)
First check the U-joint on the main driveshaft....
2nd (if you have an auto-trans) check the bushing on the diff. housing.
.....*manual's clunk pretty bad if that bushing is worn out.
Hmmm.....<thinking>......I'd also inspect the wheel bearings in the rear if you haven't done so already......but you did mention something about T-arm replacement ?!? :confused:
2nd (if you have an auto-trans) check the bushing on the diff. housing.
.....*manual's clunk pretty bad if that bushing is worn out.
Hmmm.....<thinking>......I'd also inspect the wheel bearings in the rear if you haven't done so already......but you did mention something about T-arm replacement ?!? :confused:
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 1,097
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From: Olive Branch MS
St. Jude Contributor
Re: Low speed vibration (verskel)
There is a little play in the u-joint at the transmission. About 1/16 of an inch. moves back and forth in the u-brackets just enough for you to feel and see it. Thing is, that is the only one I have changed since I had the car. Maybe it is not the right one? :confused: Also, guy at the tire store said right rear tire took alot of weight to balance. More than normal. Tire may be bad. :confused:
[Modified by brooksman9, 10:38 AM 2/27/2004]
[Modified by brooksman9, 10:38 AM 2/27/2004]
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 1,097
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From: Olive Branch MS
St. Jude Contributor
Re: Low speed vibration (brooksman9)
OK...Something else I did while I was doing t-arms was to let the axle shafts hang. I remember now reading somewhere not to do that (after the fact of course). What kind of problem can this cause? :withstupid:
Drifting
Joined: Mar 2003
Posts: 1,608
Likes: 3
From: Canberra AUSTRALIA
St. Jude Donor '05-'06
Re: Low speed vibration (brooksman9)
It sounds like your driveshaft. The halfshafts are so short you shouldn't get any vibration from them at all. Letting them hang for a few days or weeks cannot be any more traumatic then stuffing 300HP down their throat to drive the rear wheels.
Get the car on a lift and move around all the rotating components and check for movement. You already found a U-joint. Change it out. Also check your differential yokes. Unlikely that the T-arms are bad if they were rebuilt by one of the forum supporters. If done by a normal mechanic then get a dial indicator on there and check for runout.
If there is slop or play in any of those components it will translate to a vibration and early failure in the car.
Also consider getting your driveshaft balanced. This is required if you change U-joints.
vibration=failure=danger
Keep looking you will find it.
Keep safe.
:cheers:
Get the car on a lift and move around all the rotating components and check for movement. You already found a U-joint. Change it out. Also check your differential yokes. Unlikely that the T-arms are bad if they were rebuilt by one of the forum supporters. If done by a normal mechanic then get a dial indicator on there and check for runout.
If there is slop or play in any of those components it will translate to a vibration and early failure in the car.
Also consider getting your driveshaft balanced. This is required if you change U-joints.
vibration=failure=danger
Keep looking you will find it.
Keep safe.
:cheers: