Massive vibration at 30mph: HELP! - Dodge Durango Forum and Dodge Dakota Forums
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post #1 of Old 05-06-2007, 04:20 AM Thread Starter
Pardee
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Massive vibration at 30mph: HELP!

I recently had a valve stem replaced in my from right wheel.

Not sure if it has anything to do with this.

My truck is a 2000 Dakota 3.9l Standard Cab.

This past week, I have been having massive vibration with the whole truck, especially the steering wheel. This only occurs when I have the gas pedal pushed, right around 1500 RPM around 30 MPH. If I let off the gas, the vibration goes away. This doesnt happen any other time, just around that range of speen and RPM.

I am not a mechanic, and not sure if it has anything to do with the wheel. All tires are at 32psi. Wheels are all torqued to 100lbs.

I am planning on taking the tuck in to the mechanic, just checking if anyone has experienced this problem.

Thanks for your time.

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post #2 of Old 05-06-2007, 04:29 AM
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When was the last time you did a tune up? Sounds like your motor is struggling/bogging down.



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post #3 of Old 05-06-2007, 01:46 PM Thread Starter
Pardee
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Massive vibration

I just had an oil change 2 weeks ago. Plugs and wires are not anymore than 2 months old. I have a feeling its something in the wheel area, or something a lot more serious.

My question is why would it only happen at 30mph?

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post #4 of Old 05-06-2007, 02:37 PM
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It almost sounds like when they replaced the wheel either they didn't get the wheel centered on the studs before they tighten the lug nuts or they didn't re-balance the wheel. Take it back to them and have them check it out.

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post #5 of Old 05-06-2007, 03:40 PM
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Quote:
Originally Posted by Pardee
.....This only occurs when I have the gas pedal pushed, right around 1500 RPM around 30 MPH....
That's telling me that it sounds more like a drivetrain problem than tires but It would be a good idea to have the tires rechecked.



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post #6 of Old 05-06-2007, 04:07 PM
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Get the wheel rebalenced. Its the cheapest and easiest place to start..

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post #7 of Old 05-06-2007, 04:12 PM
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I would think that if it's the wheel it would be that way most of the time not just at that rpm or speed. But as was said, it's a good place to start since it happened right after the valve stem was replaced.
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post #8 of Old 05-06-2007, 05:55 PM
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Quote:
Originally Posted by Daktari
I would think that if it's the wheel it would be that way most of the time not just at that rpm or speed. But as was said, it's a good place to start since it happened right after the valve stem was replaced.
Actually that is not the case, a vibration can be rhymthic and be present at all speeds but be at its worse at a certain speed. Usually I find an unbalanced tire is really bad around 55 and not so bad above and below but present..

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post #9 of Old 05-06-2007, 05:59 PM
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check your u-joints....bet you'll find your problem.
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post #10 of Old 05-06-2007, 07:05 PM
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Quote:
Originally Posted by wreckless123
Actually that is not the case, a vibration can be rhymthic and be present at all speeds but be at its worse at a certain speed. Usually I find an unbalanced tire is really bad around 55 and not so bad above and below but present..
i second that. My gf's celica had a wheel balanced wrong, it would only do it at around 70 mph, so on I95 I did 80 the whole time just to get rid of it.
But yeah check you u-joints and your driveshaft for slop.

John
When in doubt, gas it. It will either fix the problem, or at the very least end the suspense. (Ironically this motto had nothing to do with this)

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post #11 of Old 05-07-2007, 01:35 AM Thread Starter
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Massive vibration

I had messed around under the truck today.

I did find that the drive shaft u-joint (if thats what it's called), closest to the tranny, has some side-to-side play in it. Maybe around 1/16"

It is going to the shop tomorrow for a checkup.

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post #12 of Old 05-07-2007, 03:14 AM
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They definately didnt rebalance the tire when they replaced the valve stem. Anytime you break a tire off a rim it has to be rebalanced or it will vibrate its ass off just like your finding out. Who ever did the work sounds like a moron.

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post #13 of Old 05-08-2007, 07:10 PM Thread Starter
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Massive vibration

Just got the truck back from the mechanic.

It was the front u-joint.

He replaced front and rear, Im glad it was nothing in the rearend or anything internal.

Thanks for the help guys.

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post #14 of Old 05-28-2007, 08:49 AM
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I know your issue has been resolved, but I just wanted to say that ANY side-to-side play in a u-joint indicates a bad or failing joint. They should be tight and petty much unmovable.

(2000 Dodge Durango SLT) 4x4, 4.7l V8

(1984 Dodge Ramcharger) 360 V8, 36" Swampers, too many mods to list.

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