Issues with my newly acquired GX 460 (1 Viewer)

[jakemccurdy]

If it is motor mounts you can check by opening the hood, putting it in drive. If the mounts are blown, you’ll see the engine lift up slightly under the torque. If it doesn’t move, you could left foot brake and increase revs a bit. If mounts are blow the engine will shift up around an inch on one side. Usually that’s associated with a clunk sound going over speed bumps as the engine jumps.

All that only happens if the mounts are completely failed. I guess partly failed could result in vibration but they aren’t that noticeable until they fail all together. They fail safe, there is still a metal to metal connection between engine and chassis if they’re blow, the rubber cushion just falls apart.

Had this in my mdx. Was a very noticeable clunk (like a blown LCA bush) every time I hit the gas and every speed bump.

 

[r2m]

Thank you everyone for being very helping and supportive. I really appreciate all the help with my newly acquired gx460. To answer some questions, I did double check every sensor and coil and spark plugs, and they all seem to be good. As for the engine mounts I'm not sure who's to check them and if they are bad, not sure if they'd be covered under warranty. Ive also put two bottles of techron a few fill-ups ago while driving across cross country. I will get my tires road force balanced when I get the chance in a few weeks when I drive back home. I have a local Japanese specialist guy I go to who's very knowledgeable but his work ethic is questionable at times. Sometimes he's very focused and doesn't charge me for things he can't fix even though he tried, and sometimes charges me full price for a something that seemed to be kind of brushed off. I also do own a Autel Mk808 scanner that I can monitor the air/fuel ratios and other things but not really knowledgeable enough to know what's a correct number I'm supposed to be looking at. Again thanks everyone for keeping this post alive for others and I and please keep posting suggestions or solutions.

Regarding engine mounts, see if your local Lexus dealer can take a "courtesy" look at it. They should be able to tell in a New York minute if they're good or not.

 

[theredkni463]

If it is motor mounts you can check by opening the hood, putting it in drive. If the mounts are blown, you’ll see the engine lift up slightly under the torque. If it doesn’t move, you could left foot brake and increase revs a bit. If mounts are blow the engine will shift up around an inch on one side. Usually that’s associated with a clunk sound going over speed bumps as the engine jumps.

All that only happens if the mounts are completely failed. I guess partly failed could result in vibration but they aren’t that noticeable until they fail all together. They fail safe, there is still a metal to metal connection between engine and chassis if they’re blow, the rubber cushion just falls apart.

Had this in my mdx. Was a very noticeable clunk (like a blown LCA bush) every time I hit the gas and every speed bump.

Awesome, I'll give the rest a shot when I get the chance soon here. If the engine mounts are at fault, would you say that they'd be covered under powertrain warranty?

 

[r2m]

Awesome, I'll give the rest a shot when I get the chance soon here. If the engine mounts are at fault, would you say that they'd be covered under powertrain warranty?

I would imagine it would, but not sure if all warranties are written the same. You may want to look yours over or give a call.
Motor mounts should not be a big ticket repair. In older cars that I've worked on, it's just a matter of unbolting the engine and trans, lifting the engine and trans a couple of inches up and R&R the mounts. Drop the engine/trans back down and tighten everything up. No fluids or unplugging of anything that I can imagine.
Well, maybe coolant.

 

[theredkni463]

I would imagine it would, but not sure if all warranties are written the same. You may want to look yours over or give a call.
Motor mounts should not be a big ticket repair. In older cars that I've worked on, it's just a matter of unbolting the engine and trans, lifting the engine and trans a couple of inches up and R&R the mounts. Drop the engine/trans back down and tighten everything up. No fluids or unplugging of anything that I can imagine.
Well, maybe coolant.

I'll for sure look into it. I currently live in an apartment complex and have to do any repairs or check at night when the office is closed. I hope the repair isn't too bad for a intermediate DIYer such as myself to do the job if the warranty doesn't cover it. Has anyone done the job or have a process of doing it?

 

[jakemccurdy]

Awesome, I'll give the rest a shot when I get the chance soon here. If the engine mounts are at fault, would you say that they'd be covered under powertrain warranty?

Hard to say… They hold the motor in place, so I guess technically they’re part of the powertrain? But there’s probably a lot of accessories to the powertrain that their lawyers have given loopholes to in that warranty

The motor mount certainly wouldn’t account for the wine at start up. I never had any vibration issues when I had my motor mounts go out, but that was a totally different animal. I haven’t had any of these sort of issues with my GX so don’t take my word for it.

There’s a lot of good mechanics and engineers on this forum, but most of us couldn’t even completely properly diagnose if the car was right in front of us. Half the time I take it to Toyota or to my mechanic who is a land cruiser guy and just have him tell me what’s wrong and then I go fix it or have them do it if I don’t have time or its too complicated to take on with my shade tree skillset.

I think you’d get to the bottom of this real fast if you just took it to the first Toyota dealership you pass. They probably won’t charge you anything if you have a warranty, but worst case scenario it’s like $150 for them to go through the entire truck. It does take a couple hours though for them to do it well.

 

[theredkni463]

Hard to say… They hold the motor in place, so I guess technically they’re part of the powertrain? But there’s probably a lot of accessories to the powertrain that their lawyers have given loopholes to in that warranty

The motor mount certainly wouldn’t account for the wine at start up. I never had any vibration issues when I had my motor mounts go out, but that was a totally different animal. I haven’t had any of these sort of issues with my GX so don’t take my word for it.

There’s a lot of good mechanics and engineers on this forum, but most of us couldn’t even completely properly diagnose if the car was right in front of us. Half the time I take it to Toyota or to my mechanic who is a land cruiser guy and just have him tell me what’s wrong and then I go fix it or have them do it if I don’t have time or its too complicated to take on with my shade tree skillset.

I think you’d get to the bottom of this real fast if you just took it to the first Toyota dealership you pass. They probably won’t charge you anything if you have a warranty, but worst case scenario it’s like $150 for them to go through the entire truck. It does take a couple hours though for them to do it well.

I'll see if i can find a place thats decent enough to really look through. im currently in a different state for a couple of weeks so i'll update once i get the change to take it in.

 

[Wildcat Walker]

Well first thing is to change back to stock wheels and proper offset.

People and their aftermarket wheels man. You get no performance or functional gain for the money and aftermarket wheels with different offset provide zero longevity benefits.

How many miles on it?

And the fact that they usually buy them BEFORE the truck is paid off.

 

[re_guderian]

My wheel bearings were tricky to diagnose. See here.

Front hub and bearing replacement

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