Vibration issue

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RyanwjSmith

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So I am new here. I’m not a mechanic so I may fumble the technical terms. This is a bit long so I’m sorry. I’m hoping someone in this forum has either dealt with this issue or might know what’s going on. I have a 2018 ram 1500 tradesmen 4 x 4 with the V6 engine. For the better part of a year I’ve been having this issue where I feel a vibration sometimes it’s less noticeable than others. There’s really no rhyme or reason. Sometimes I’ll feel it a lot going slow, sometimes barely at all. It’s usually more noticeable when going fast say above 60 mph. But sometimes it’s not too bad then either. It never is not there at all.

About nine months ago, I brought it to get new tires, balance and alignment at Sullivan tire. They told me it also needed a new front passenger CV axle which they said was going to cost about $5000. I had a family friend who owns his own shop look at it. He thought that was probably true. He could do it for less money with a used axle. We did that. I noticed a slight difference, but nothing crazy. After a few weeks, the vibration was back the same as it had been before. I brought it back to him. He said he could take the CV axle out to see if that was the problem and I could drive it that way it just would not have the ability to go into four-wheel-drive. Tried that I didn’t notice a crazy difference, so he put the CV axle back in I didn’t have any more money to put towards it so that was that for a while, but the vibration wasn’t awful.

About one month ago, the vibration became worse so I brought it to my mechanic near my house that I trust. He worked on it for almost a full day trying to find the issue. Now, at this point the tires are less than a year old. It has been balanced and aligned. There is a new front wheel bearing within this year also. He changed the U joint, balanced the tires, he drove it. He felt the issue thought it was from the front passenger side, which I had thought as well. He had the truck on the lift had me come out and look at it to show me the CV axle on the drivers and passenger side there was a lot of play in the passenger side so he said he’s not sure if this is the problem, but he said this needs to be changed anyway it might also need an intermediate piece and while he’s doing that, he will have to open up the front differential and he can see if that is in good shape.

I had him change the front passenger CV axle. He also changed the intermediate piece and while he had the differential open he looked and said it was fine. After this, I drove it and it was much better but I could still feel a slight vibration. Now it could be in my head because he made the suggestion but it felt like the vibration was more so coming from the back end. He said, even though he balanced the tires, there could be a slight warping of the rear rims that he wasn’t able to tell. He could get new rims and see if that helps. I haven’t gotten the new rims yet to try that, but I’m thinking about it. I’m wondering if anyone has had the same problem? Is this maybe an issue where it is a CV axle problem but there’s a different issue causing the CV axle to wear quicker? Any possible answers are appreciated. Thank you.
 

crash68

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Now it could be in my head because he made the suggestion but it felt like the vibration was more so coming from the back end.
Does this truck have a two piece rear drive shaft? It could be the carrier bearing that supports the driveshaft or the driveshaft itself.
 

B250

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I just had an annoying vibration which shook my steering wheel at about 30mph. It was barely noticeable when the car was cold but after a while driving it got worse. It seemed to be coming from the front so I checked the wheel bearings, tires for flat spots, missing balance weights, sticking brake pads, etc etc. Just by chance I was working on the rear axle and spinning the rear drive shaft around when I noticed the front U-Joint spun 'irregularly' (not smoothly round the shaft). It turned out that one of the four needle bearings had worn completely away so there was a tiny gap between the cross and the cap. It was only noticeable by looking along the shaft while spinning it, and then it only 'wobbled' occasionally.

Another thing that can cause a vibration is a defect on the tire itself. Sometimes a manufacturing defect that only comes out after driving for a while. Other times it can be a repair that is now failing. Try swapping tires with your spare and see if the vibration changes at all
 

jws123

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get your tires road force balanced and ask them to see if they are bent most tecs wont care if they are bent as long as they 'balance' so ya gotta ask.
 
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RyanwjSmith

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No I believe it is one piece
I did look into this a little and many places do say many of the 2018 Rams, especially Quad cap and above have a two piece driveshaft. Mine does not. And either way it’s not making a noise. It’s just a vibration that you can feel.
 

mogwai

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I have a 2014 ram 1500 currently dealing with this issue. Just replaced the CV axle last year cause of shaking and now it’s loose again. My shake starts around 60mph. I’m thinking of trying a intermediate shaft and cv axle to see if that works for me. I know you already swapped those. Hope you find the answer.
 

yogibear18

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Possibly radial or lateral runout, requires the tire(s) let the air out mark the tire at valve stem on the tire break the bead on tire rotate tire 90° to180° re mount tire and rebalance tire, road check, if still present may have to repeat or may have a belt in the tire shifted
 

seems fishy

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Just wondered if you had this fixed yet or not...and what was the issue?Rotate the back wheels to the front and if the vibration moves from the back to the front it is wheel/tire related.If everything remained the same,,with vibration it ,isn't your wheels/tires.
I had a new Silverado in 2001 that had Firestone Wilderness tires. This was the same brand that new Ford Broncos had when they were flipping over,back then.[FORD ended their relationship with Firestone because of that but Firestone blamed Ford for recommending underflation on the door pillar as the normal pressure].Long story but I replaced my Firestone Wilderness tires to be safe,and replaced with Goodyear Wranglers.They were absolute crap,and my truck vibrated,despite redoing balancing etc.Never had that issue with the tires I had taken off.I regretting tossing them out.
 
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RamDiver

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Just wondered if you had this fixed yet or not...and what was the issue?Rotate the back wheels to the front and if the vibration moves from the back to the front it is wheel/tire related.If everything remained the same,,with vibration it ,isn't your wheels/tires.
I had a new Silverado in 2001 that had Firestone Wilderness tires. This was the same brand that new Ford Broncos had when they were flipping over,back then.[FORD ended their relationship with Firestone because of that but Firestone blamed Ford for recommending underflation on the door pillar as the normal pressure].Long story but I replaced my Firestone Wilderness tires to be safe,and replaced with Goodyear Wranglers.They were absolute crap,and my truck vibrated,despite redoing balancing etc.Never had that issue with the tires I had taken off.I regretting tossing them out.


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Jeepwalker

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You need to consider a different shop/mechanic. Your guy sounds like a parts-replacer doing one thing at a time. He ought to go around it and perform a whole bunch of tests. Rear U-joint is one of the first things to check. Tires ...get road-force balanced and STAND THERE at the shop when they balance them. Best if you can stand there next to the machince/tech. Most tire techs will short-cut the balance job ...not fully doing what a Hunter Road Force Balance machine is capable of. That's because it takes 2x longer to do rim-matching (spin the tire on the wheel for a 'better' balance. You'll hear an "Awww, that's good enough" which is total BS. I've literally stood there when my buddy at GM RFB's my tires and seen the road-force score cut in half after rim-matching the tire to the wheel. That means far less weights and matching any 'out of roundness' of the wheel to out of round of a tire ...if there is any. On a pickup with heavy tires, that means everything!

About any 'quickie' or skipped steps or miss-steps you can imagine, tire techs will try/do. Some guys use the incorrect type weights (which may fall off the wheel after 10 miles). I had a guy wash (clean) the gel off raised white letter tires and rinsed with a hose, a couple yrs ago ....and then attempt to mount the tire with water in it (you can't balance a tire with water in it!!). I immediately hit the Stop Button and said, '...we gotta clean the water out of the tires'. He looked at me like, "Why on earth would we need to do that?!" LOL. I assume he's probably balanced plenty of tires with water in them! So, that's the mentality of some tire guys out there. Many have not been properly trained or don't see the cause-effect on what they're doing. And then you have guys like my buddy who's read the tire machine's manual forward and backward and gets into the tech of the machine. Regardless start with a 'verified' (by you) good Road Force balance job (watch some videos ahead of time so you know what needs to be done), and stand there & watch them like a hawk. Stay off your phone because it only takes a couple seconds for them to skip over a step or three. Be prepared to hit the stop button. Most shops this time of year have the shop doors open so you can watch them work through an open bay door.

It really matters on truck tires b/c they are larger and heavier than car tires. A little out-of-round, a bent wheel, or poorly balanced makes a big difference. When they balance the tire, just look under the shroud and you can see if the tire/wheel is wobbling. I bought 6 used corvette aluminum wheels with intent to polish up and install. They looked great with really no major scuffing. I had the car knuckle and new hub in the vise on the bench. There was zero run-out at the hub-face as checked with a dial indicator. Guess what? Every one of those Corvette wheels was slightly warped or had a bent lip (more than I was comfortable with). I didn't want my car bobbing all over the place going down the road. So I decided to get rid of them and buy brand new set of repops. Every one of the repops was 100% perfect (same hub bench test). Zero run-out. The point is, a warped wheel "could" be causing your vibration.

Lower ball joints are a possibility (these are among the first to fail on Rams). A broken tire cord, A weight having fallen off a drive shaft could cause it.

But start with the wheels and tires ....and new u-joints ..since you found a worn/damaged one.

Let us know what it turns out to be.

:cheers:
 
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