Vibration at 70mph - Kia Forum
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#1 (permalink) Old 05-30-2011, 07:22 AM
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Default Vibration at 70mph

My 04 vibrates at 70mph. Steering wheel shakes like hell and I can see the sun visor flipping up and down as well! Balancing is fine, I suspect the alignment or mounts(engine and\or transmission) Any thoughts?
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#2 (permalink) Old 05-30-2011, 08:25 AM
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Is it worse when you are accelerating, and does it go away if you let off the throttle and drift? Maybe a bad engine torque mount or bad halfshaft. You can check the mounts by power braking the engine. The engine should move slightly but not lift out of the car.

Can you feel it at low speed and it gets worse the faster you go? Maybe a bad tire or bent wheel.

Alignment wouldn't cause a shake unless the tires are completely hosed.

And where in PA is there a 70mph posted speed limit?
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#3 (permalink) Old 06-02-2011, 10:49 PM
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I always drive 5 mph over speed limit. Its getting worse coupled with way too much left pull and some cranking noise like an old chair. Getting ball joints inspected tomorrow. How much would it cost me?

PS - I have to get them replaced regardless of the cost before my semester begins
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#4 (permalink) Old 06-02-2011, 11:10 PM
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while you are having those ball joints checked, also check out those tie rods, (inner and outer), axle shafts, and wheel bearings.
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#5 (permalink) Old 06-04-2011, 06:51 PM
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Went to Pepboys and they said I need new ball joints and cv joints. Dissapointed with their answer I considered a second opinion so I went to C.Harper Kia. They took everything off from tie rods to wheel bearings to ball joints to cv joint, etc. It turned that 3 wheels were off by a huge number on balancing (stick on weights fell off), vehicle needed wheel alignment and 2 out of 4 tires are bad (a bulge inside or steel wires), which 2 they could not tell since it was time for them to close up.

For once I fell there are people out there who are genuine otherwise people will do anything to sell you stuff. Great thanks to C.Harper guys
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#6 (permalink) Old 06-04-2011, 06:57 PM
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All engine and transmission mounts were found to be in perfect condition. I was also offered 5200$ trade value for a new forte stick and ac @ 14,000$ + taxes. Salesman Gary Dolton understood my current position and did not pressurize me at all otherwise they can get on your nerves.

I have an excellent credit score and everything is in good standing. This being paid off and I being a student plus and 8$ an hour job isn't a good idea to consider any other car.
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#7 (permalink) Old 06-04-2011, 07:37 PM
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I commend your outlook on why you aren't getting a new car. A lot of people would have pulled the trigger and been driving the new Forte by now. I would LOVE a new Optima, but my 2004 runs and drives great. I can afford the payments, I just don't want them.

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#8 (permalink) Old 06-08-2011, 10:04 PM
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Finally I replaced all 4 cheap tires with Good Year Eagle LS's All Season 205\55 R16s. Noticed 3\4 inch ride height drop as the previous ones were 60s.

some people think that 205 means diameter and 55 is the width Care to explain Ignorance

It runs smooth, quiet and vibration free
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#9 (permalink) Old 06-08-2011, 11:40 PM
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205/55 R16 = “205" specifies the tire’s nominal width in millimeters. “55" refers to the nominal aspect ratio, i.e. the ratio of the tire’s height to its width. In this case, the height of the sidewall is 55 percent of the nominal width. “R" stands for “Radial". In radial tires.“16” in the size data refers to the rim diameter in inches. if you have another letter after the 16 like "V" it would mean the tire is able to go to speeds of 135 mph.

Did this answer your Question

http://www.streetkiaz.com/streetkiazx/uploads/photos/2066.gif
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#10 (permalink) Old 06-10-2011, 08:39 PM
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I know all the stuff but I find it funny when people walk up to me and tell me 205 is the diameter, 55 is the width and that's how it has been!!! They know they're wrong but they take pride in being wrong. Why? I have no clue
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