My 4Runner jumps up & down at low speed
#1
My 4Runner jumps up & down at low speed
Hi,
Before I replaced new tires on my 97 4Runner, SR5, 4WD, I read all the posts regarding balancing, Hunter GPS9700, Haweka... Anyway, I have not found any bad vibrations during 65-75 mph high speed driving.
But recently, I do notice that my 4Runner jumps up & down easily at low speed. For example, during a traffic jam on highway, at speed of 20-40 mph, I feel like my car is jumping up & down when I run over the joints (or dips) of concrete pavement. It sounds like the wheels are not round and the tire jumping noise echoes inside the car heavily.
Any idea where I should look into first? Rear shocks, coil springs, or re-balance the wheel again? Thanks.
Before I replaced new tires on my 97 4Runner, SR5, 4WD, I read all the posts regarding balancing, Hunter GPS9700, Haweka... Anyway, I have not found any bad vibrations during 65-75 mph high speed driving.
But recently, I do notice that my 4Runner jumps up & down easily at low speed. For example, during a traffic jam on highway, at speed of 20-40 mph, I feel like my car is jumping up & down when I run over the joints (or dips) of concrete pavement. It sounds like the wheels are not round and the tire jumping noise echoes inside the car heavily.
Any idea where I should look into first? Rear shocks, coil springs, or re-balance the wheel again? Thanks.
#2
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I would be inclined to say that what you are feeling is the car being out of synch with the road. It is sort of like going over washboard roads. Sometimes going slower is bad where as if you were going 5mph faster the tires would naturally recoil in the right rhythm with the washbaord road.
#5
What did you drive before your 4Runner?
I'm thinking that what you're experiencing, is just the normal suspension action of what is a fairly stiffly sprung SUV, based on a truck chassis.
I'm thinking that what you're experiencing, is just the normal suspension action of what is a fairly stiffly sprung SUV, based on a truck chassis.
#6
I had a Pilot and my wife took it. So I got this 4Runner. At the same time, I heard sometimes whistling sound coming from rear wheel area when I drive. It sounds like rear tires are scratching pavement or transmission is whistling. But the noise is at the rear end. No idea!
Could it be the alignment issue? I just got it aligned recently.
Could it be the alignment issue? I just got it aligned recently.
#7
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#10
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I had a Pilot and my wife took it. So I got this 4Runner. At the same time, I heard sometimes whistling sound coming from rear wheel area when I drive. It sounds like rear tires are scratching pavement or transmission is whistling. But the noise is at the rear end. No idea!
Could it be the alignment issue? I just got it aligned recently.
Could it be the alignment issue? I just got it aligned recently.
#11
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Join Date: Feb 2005
Location: Bay area, CA
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remember, the 4runner rides like a truck. Any slight road imperfections such as potholes, rough surface, freeway expansion joints, road bumps, contruction zone, etc. will send your 4R to jump up and down, shaking from side to side, and vibrate, which is normal.
Last edited by yota5VZFE; 05-19-2007 at 10:39 PM.
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