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cindymaine

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Discussion starter · #1 ·
I just had my 12,000 mile tune up and whiel driving down the high way . the Jeep starting shaking so much I pulled over I thought I had a flat tire. Tires are fine, but it will periodically shake while going around 40 - 50 mph. than settles down. Any suggestions?
 
Take it back to the Dealer! Are you in winter with snow right now?
 
Yes and it did great in the snow. Actually as well as my Grand Cherokee
Look for an ice chunk frozen in one or more of the wheels. Patriot wheels tend to collect ice that sets them off balance.
 
I'd bet on a tire problem. I had the shakes with a particular brand twice on 2 different vehicles and 2 different sets of tires. First on my Pontiac it would shake between 50-65, but it was OK faster or slower; I could accelerate smoothly through that range, but on leveling off or decelerating (not even braking) it would shake very heavily. Later I noticed a similar problem with the same brand tires on my wife's Wrangler but at slower speeds and it was worse. It would be fine for days, then cross some RR tracks or hit some rough road and the shaking became quite uncontrollable -- frightening even. The only solution was to brake to a very slow speed, then resume. Never had the problem before or since with either vehicle, same shock-absorbers before & after, and never any suspension work on either vehicle. They balanced OK but there had to be something defective with that brand -- a friend suggested some internal defect that wasn't visible.
 
If there is no snow/ice built up on the rim it is quite possible that there is a wheel out of balance.

The vibration/wobbling will be more pronounced at some speeds and seem to disappear at others. The 40-50 MPH range must be the natural frequency of the vibration.

Have them recheck the balance of the wheels.
 
Look for an ice chunk frozen in one or more of the wheels. Patriot wheels tend to collect ice that sets them off balance.
Exactly what I was getting at... If this is the first big snow, it is typically ice on the inside of the rim which forms when any snow inside the rim melts from the heat of the brakes and pools at the bottom of the rim, then freezes. I'll guarantee this is your problem; the recent 12k mile checkup is just a coincidence. There's almost no way to avoid this problem unless you have a heated space to park in. Check your rims in the morning - or now, and let us know what you find. Remember, this is an intermittent problem depending on conditions and multiple variables. If you have this problem in the warm weather or dry cold, there may be something else wrong.
 
I'd bet on a tire problem. I had the shakes with a particular brand twice on 2 different vehicles and 2 different sets of tires. First on my Pontiac it would shake between 50-65, but it was OK faster or slower; I could accelerate smoothly through that range, but on leveling off or decelerating (not even braking) it would shake very heavily. Later I noticed a similar problem with the same brand tires on my wife's Wrangler but at slower speeds and it was worse. It would be fine for days, then cross some RR tracks or hit some rough road and the shaking became quite uncontrollable -- frightening even. The only solution was to brake to a very slow speed, then resume. Never had the problem before or since with either vehicle, same shock-absorbers before & after, and never any suspension work on either vehicle. They balanced OK but there had to be something defective with that brand -- a friend suggested some internal defect that wasn't visible.
I'm having a similar problem with my Dunlop Sport Sigs. I've had a bunch of work/looking at the wheels and suspension - no issues what so ever. The mechanic is my brother in-law and being a German Spec Patriot owner himself, he knows what little noises/creeks/and what-nots we have. He's a 15 year car veteren, in charge of (Regional manager) for Globus Reifencenter (Tire shop), and I'm confident in his abilities...even he can't figure it out...

The kicker to it all - I put the wheels on an 07 Caliber (same bolt pattern/offset/tire size) and it had no issues at all - at any speed... Still trying to figure it all out...
 
Thanks for your response, Javalitis -- I thought Javalitis meant 'inflammation of the java' but what do I know?

So yours were Dunlops? Mine were Remington Exum. I wonder if there is a relationship or common manufacturer between Dunlop and Remington? Maybe being in the business your brother-in-law knows. I didn't mention the brand in my earlier post because I don't want to badmouth anyone -- I presume the manufacturer is well-intended, but I can't deny those are the only tires I've owned that ever had the problem and as I said, same brand, same label, two different sets on two different vehicles.

In retrospect, I really don't think those tires were appropriate for a Jeep but I got them for nothing and they were worth what I paid. The curious thing was I could go for days with no problems, then something would set it to jiggling and it would intensify until I dropped the speed way down. If I understood what a friend told me, I guess the belts can break loose internally and road/vehicle conditions can trigger the problem. There was still plenty of tread left on them, but in both cases, I just didn't think it was worth the risk to have them on the vehicle.
 
Thanks for your response, Javalitis -- I thought Javalitis meant 'inflammation of the java' but what do I know?

So yours were Dunlops? Mine were Remington Exum. I wonder if there is a relationship or common manufacturer between Dunlop and Remington? Maybe being in the business your brother-in-law knows. I didn't mention the brand in my earlier post because I don't want to badmouth anyone -- I presume the manufacturer is well-intended, but I can't deny those are the only tires I've owned that ever had the problem and as I said, same brand, same label, two different sets on two different vehicles.

In retrospect, I really don't think those tires were appropriate for a Jeep but I got them for nothing and they were worth what I paid. The curious thing was I could go for days with no problems, then something would set it to jiggling and it would intensify until I dropped the speed way down. If I understood what a friend told me, I guess the belts can break loose internally and road/vehicle conditions can trigger the problem. There was still plenty of tread left on them, but in both cases, I just didn't think it was worth the risk to have them on the vehicle.
Yes - technicaly speaking "Javalitis" does mean inflamation of Java. It's just a word I made up for the Coffee Shop that I'll open eventually (and yes it's Copyrighted!).

Don't know if there's any relationship between the two brands... I can't say that I could go days without any issues - but it has my curiosity that I can drive down the same stip of road one day at the same speed and time the next and have two totally different handleing results.... Still trying to work out the kinks..

So when you talk about belts - you're talking about the main serpentine belt on the engine right (I know how stupid that sounds...)? And being "knocked loose" after hitting a bump it's throwing the "engine off balance" so to speak - making the tranny and attached suspension components to wobble? Sounds possible I guess - but seams a little fishy. Either way, I'll be looking into that possiblity.

Has anyone else has similar issues?
 
Yes - technicaly speaking "Javalitis" does mean inflamation of Java. It's just a word I made up for the Coffee Shop that I'll open eventually (and yes it's Copyrighted!).

Don't know if there's any relationship between the two brands... I can't say that I could go days without any issues - but it has my curiosity that I can drive down the same stip of road one day at the same speed and time the next and have two totally different handleing results.... Still trying to work out the kinks..

So when you talk about belts - you're talking about the main serpentine belt on the engine right (I know how stupid that sounds...)? And being "knocked loose" after hitting a bump it's throwing the "engine off balance" so to speak - making the tranny and attached suspension components to wobble? Sounds possible I guess - but seams a little fishy. Either way, I'll be looking into that possiblity.

Has anyone else has similar issues?
I'm sorry about the confusion re: the belts. I meant the belts & plies inside the tire. I believe tires are made up of steel or fiberglass belts inside the rubber that give the tire its strength. What I'm imagining is that a belt may fatigue, tear, or come lose from its neighboring plies resulting in strange performance under stress such as when cornering or bouncing. That's how I understood what was explained to me, but I could be all wrong.
 
I'm sorry about the confusion re: the belts. I meant the belts & plies inside the tire. I believe tires are made up of steel or fiberglass belts inside the rubber that give the tire its strength. What I'm imagining is that a belt may fatigue, tear, or come lose from its neighboring plies resulting in strange performance under stress such as when cornering or bouncing. That's how I understood what was explained to me, but I could be all wrong.
Wow - I was WAY off :p Well I did finally get it to a Garage to get looked at a little further. Turns out that the sway bar has stress fractures (same style you get in your shins) AND the Tie rods are "worn" - at least that's what the mechs are saying. They brought me under the car and showed me the problems then they showed me an 09 Pat (right next to mine while I was in the pit) and what it should look like. I can see how my brother in-law missed it.

For the sway bar - they used some harmonic-magnetic do-dad. They showed me a graph from the 09 then they showed me the graph of mine...WAY different. The best part about it all is they did the tests "again" with me in the pit, one after another.

I guess that's what you get when the Chrysler Dealership is part of a dealership corporation that sells Benz's and they treated my Jeep as well as they do my father in-law's C280.

Luckly (although used) the warranty isn't up till July. The bad part was it cost me 265 Euro (almost 400 dollars) to figure this all out. They have to order the sway bar and tie rods - should be in next week - and they're covered.
 
Wow - I was WAY off :p Well I did finally get it to a Garage to get looked at a little further. Turns out that the sway bar has stress fractures (same style you get in your shins) AND the Tie rods are "worn" - at least that's what the mechs are saying. They brought me under the car and showed me the problems then they showed me an 09 Pat (right next to mine while I was in the pit) and what it should look like. I can see how my brother in-law missed it.

For the sway bar - they used some harmonic-magnetic do-dad. They showed me a graph from the 09 then they showed me the graph of mine...WAY different. The best part about it all is they did the tests "again" with me in the pit, one after another.

I guess that's what you get when the Chrysler Dealership is part of a dealership corporation that sells Benz's and they treated my Jeep as well as they do my father in-law's C280.

Luckly (although used) the warranty isn't up till July. The bad part was it cost me 265 Euro (almost 400 dollars) to figure this all out. They have to order the sway bar and tie rods - should be in next week - and they're covered.
I guess I was about as far off in my suggested solution. :eek: I'm glad you were able to solve the problem.

For you and my neighbor, cindymaine who started this thread, and anyone else reading: I recently had the control arm cross member bolts replaced. I don't know if that might be related to front-end shaking. Dealer said it was an advisory bulletin -- one step below a recall -- and when they had my Patirot in for its LOF they replaced them at no charge. How many miles on yours? I'm at 22,000 miles.
 
I guess that's what you get when the Chrysler Dealership is part of a dealership corporation that sells Benz's and they treated my Jeep as well as they do my father in-law's C280.QUOTE]

PS for Javalitis: By the by, its nice to hear someone say something nice about their dealership. :notworthy: Seems so often we only hear from frustrated people who are convinced the dealership is totally incompetent. I've been driving new cars since '77 and I've had plenty of experiences with my dealers, only one of which was negative. Every other time the dealer got it right, and in some cases went beyond what was needed.:smiley_thumbs_up:
 
Discussion starter · #17 ·
Hi -just getting back to everyone. It was that I had some ice/snow stuck in the wheel base. I have the mud flaps and they tend to build up snow as well. As soon as I kick everything clean - including under the wheel well - all was fine. thanks for your input jepstr
 
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