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Old 11-15-2019, 02:56 AM #1
T4R916 T4R916 is offline
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Vibration/Done

I've been noticing vibration on my floor board or gas pedal area and drone noise between 70mph-75mph. Any body know what it can be? Does not vibrate in the steering wheel. Tires are new 285/70/17 Wildpeak that are 2 months old. Had this vibration before the tires. Lifted on Icon and JBA UCA incase these info helps. Also its a v8 full time 4wd

Last edited by T4R916; 11-15-2019 at 08:40 PM.
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Old 11-15-2019, 04:02 PM #2
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@T4R916 If you don't have any feedback at the wheel, you can likely rule out front end linkage, CV axles, tires, etc. Do you feel it all the time when the engine is running? If you shift it into neutral does it go away? I've never heard of it on 4runners, but you might want to look at the engine mounts if that's the case... Or it's just the power of the mighty V8
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Old 11-15-2019, 05:43 PM #3
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Put vehicle in park, engage ebrake, then get under vehicle. Grab your front driveshaft at the back near the tcase u-joint and try and move it. If you have any play then the u-joint is toast.

The zerk fitting on that specific u-joint is the most overlooked lube point due to the shield in place making it difficult to acccess with your grease gun. Dealer serviced trucks always have this ujoint fail first due to the tech not lubing it. LONGO TOYOTA in El Monte specifically if you catch my drift.
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Old 11-15-2019, 08:42 PM #4
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Quote:
Originally Posted by randy88fj62 View Post
Put vehicle in park, engage ebrake, then get under vehicle. Grab your front driveshaft at the back near the tcase u-joint and try and move it. If you have any play then the u-joint is toast.

The zerk fitting on that specific u-joint is the most overlooked lube point due to the shield in place making it difficult to acccess with your grease gun. Dealer serviced trucks always have this ujoint fail first due to the tech not lubing it. LONGO TOYOTA in El Monte specifically if you catch my drift.

Tried that. No play at all and I always grease the fittings.
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Old 11-15-2019, 08:44 PM #5
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Quote:
Originally Posted by apohl17 View Post
@T4R916 If you don't have any feedback at the wheel, you can likely rule out front end linkage, CV axles, tires, etc. Do you feel it all the time when the engine is running? If you shift it into neutral does it go away? I've never heard of it on 4runners, but you might want to look at the engine mounts if that's the case... Or it's just the power of the mighty V8


The vibration is constant after 70mph. Tried shifting it into neutral and still vibration. Im thinking it could be from my front diff.
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Old 12-08-2019, 08:27 PM #6
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I have the same hum/vibration. Have you had any luck figuring it out? I'm looking at having the tires road force balanced as I have already serviced the transmission, replaced U-joints, Hub/bearings and CV. If the tires aren't the problem, I wonder what else could cause it. What are you looking at in the front diff?
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