Severe shaking only when accelerating - Kia Forum
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#1 (permalink) Old 06-27-2008, 03:17 PM
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Default Severe shaking only when accelerating

The dealer's service dept. can't figure out what's wrong because this doesn't happen during their test.

Our 2003 Sedona van (with about 97,000 miles on it) is usually fine. However, after about 30 minutes of driving at highway speeds, the van starts shaking severely. If you let up on the gas pedal and coast, the shaking stops. If you try to maintain speed or accelerate, the whole van shakes terribly. If you hit a bump in the road, the shaking stops for a second, then resumes. It does this for about 15 minutes, then the shaking suddenly stops and all is fine again. It's gradually getting worse and happening more often and at slower speeds. They claim it's safe to drive.

I'm the original owner, so the 100K mile powertrain warranty is still in effect. Over time, the dealer has replaced 3 axels, some lug bolts, and a motor mount, and still can't determine what's wrong. It's not the tires because the shaking would be all the time, not just when accelerating.

Any of this sound familiar to anyone? Any suggestions? Thanks.
(This site is a great resource. Keep up the good work.)
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#2 (permalink) Old 06-28-2008, 03:54 AM
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It sure sounds like a drive shaft problem, or maybe the center bearing that's found on the one shaft.

Why not take it to a drive train shop and see what their opinion is, and based on that take it back to Kia for repair.

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#3 (permalink) Old 08-22-2008, 06:59 PM
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I wonder if what you are feeling is transmission shudder? When my 02 (130,000 miles) goes into lockup at lower speeds, I get a constant shudder under light accelleration. Fourth gear also shudders when engaging. Rebuilt trans are cheap from Kia.
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#4 (permalink) Old 08-22-2008, 07:05 PM
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it soud more like 60% of them like clutch problem, when it gets hot it starts not transfering 100% of power under the load
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#5 (permalink) Old 08-22-2008, 07:30 PM
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Is the transmission going in overdrive. I had them do the shudder thing when you're just trying to maintain a speed but when you accelerate or let off it stops. You can unplug the overdrive on transmission or rebuild. I know this doesn't fit all your symptoms. Does it affect it when you turn the steering wheel.(steering damper)
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#6 (permalink) Old 08-23-2008, 07:00 PM
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I've got the same problem with my '03. Love to know what you find out!

DAve
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#7 (permalink) Old 07-13-2009, 08:43 PM
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Default I got the same problem

I got the same proble here on my sedona 2002. I'm looking how to fix it. my have 96000 miles. Any sugestion????
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#8 (permalink) Old 07-16-2009, 10:33 PM
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This sounds like an ignition systems problem. I suggest checking your ignition coils, you may also want to change the spark plugs.
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#9 (permalink) Old 08-04-2009, 06:48 PM
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Default Vibration on accelleration

I thought it was the plugs also(old school technology). It was the right axle and usually is with most cars. No vertical play should be evident at the inboard joint. If the axles have been changed I would suspect the center bearing.
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#10 (permalink) Old 03-15-2010, 02:22 AM
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air flow sensor is dirty
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