How did I blow a head gasket? (1 Viewer)

[Texas Sun Power]

My 2015 has 205k and has been great for last 115k of ownership. Last week my AC started not working in traffic. I stopped by the shop and he was like, it’s probably the fan. I make an appointment to get it fixed next Friday. I drove home. I try to start it up a few hours later. I get a clunk. My thoughts:
“Is the batt dead? I’ll try again click click click (like batt is dead). Phew, for a minute there, I thought the engine seized. I’m about to connect the charger when I decide to check with my scanner tool what charge is etc. (no check engine, no overheating) I try one more time. Starts right up. Yeah! Then the smell. Then the smoke. You know the one, billowing white and sweet smell. Coolant!!! ”

 

[jeremy j]

Sorry to hear that. Really strange to have the AC issue and the not start at the same time. I don't know how those would be related.

 

[Texas Sun Power]

Yeah, the other day I had a CEL, but I couldn't find my scan tool. By the time the new one arrived it had turned itself off. Never indicated that it was overheating, but there's a Pending Code of "misfire in cylinder 7" according to Car Care Nut 2015 it's always 5 or 7 that go.

 

[Acrad]

He was claiming in his latest video that somehow this was isolated to 10-13 models because replacement head gasket were different

Still a rare issue in the realm of potential issues but that doesn’t help you in your current situation

 

[Hiluxforever]

That sucks, my condolences to your finances.

 

[Texas Sun Power]

Thanks. It happened on the same day I got a new job, though, so it's hard to be too mad. And I miss my LX anyway. A bricked 2015 GX460 has to be worth something!

 

[MrTorgue]

Thanks. It happened on the same day I got a new job, though, so it's hard to be too mad. And I miss my LX anyway. A bricked 2015 GX460 has to be worth something!

You gonna part it out?

 

[Texas Sun Power]

You gonna part it out?

I mean, probably not personally. I won’t be repairing it though.

 

[r2m]

My 2015 has 205k and has been great for last 115k of ownership. Last week my AC started not working in traffic. I stopped by the shop and he was like, it’s probably the fan. I make an appointment to get it fixed next Friday. I drove home. I try to start it up a few hours later. I get a clunk. My thoughts:
“Is the batt dead? I’ll try again click click click (like batt is dead). Phew, for a minute there, I thought the engine seized. I’m about to connect the charger when I decide to check with my scanner tool what charge is etc. (no check engine, no overheating) I try one more time. Starts right up. Yeah! Then the smell. Then the smoke. You know the one, billowing white and sweet smell. Coolant!!! ”

Depending upon what it'll cost you to pull the heads, here's an option:

Toyota Lexus 1UR-FE 4.6L Remanufactured Engine Tundra Sequoia GX460 2010-2015 | eBay

Your core is important to us so that our engines are consistently in inventory. Below are actual photos of examples of what may be considered NON Rebuild-able Cores. Engines-USA has been serving the engine industry for over 20 years.

www.ebay.com

Or this, but I'm not sure how plug-n-play an LS640 goes into a GX:

JDM 1UR-FSE 07 08 09 LEXUS LS460 08 09 10 11 GS460 4.6L DOHC V8 ENGINE

MAKE: LEXUS PRODUCT FITMENT: 2007 2008 2009 LEXUS LS460 2008 2009 2010 2011 LEXUS GS460 SERIAL NUMBER ENDING IN: 2307 Parts included: Engine Head & Block Timing Components Intake Manifold Throttle Body Fuel rail & injectors Exhaust Manifold Distributor or coil packs Alternator Power Steering...

www.jdmwestcoast.com

 

[rexington14]

Still a rare issue in the realm of potential issues but that doesn’t help you in your current situation

It's difficult to make a claim on how rare or common these failures actually are. Root cause of failures? Even more so.

The 200 series certainly has had a fair amount of failures reported.

It's unfortunate, something isn't quite right with the UR engines in these platforms.

 

[Acrad]

I’m just basing on 8 years of daily watching reports on FB groups and all forums with GX content. It has been rarely reported on the 1UR-FEs in the 460s anyway.

Abundant content for coolant valley leaks, water pumps, timing cover weep/seep/leaks, and radiator failures..

Cam tower leaks aren’t as rare as head gasket but from an owner report perspective not commonly reported. I do see far more cam tower leak reports on 3UR-FEs.

 

[Texas Sun Power]

Likely scenario Aux fan or fan clutch likely failed (AC wasn’t working at idle) and the temp sensor failed too and it overheated. It threw a code the other week. It went away so I continued to drive. No stored code (but I have a cheap scanner). Pending code was misfire on #7. FB marketplace is going out of the woodwork to buy it. So I’m gonna scoop up this 99 LX470 and call it a win. lol.

 

[Texas Sun Power]

Depending upon what it'll cost you to pull the heads, here's an option:

Toyota Lexus 1UR-FE 4.6L Remanufactured Engine Tundra Sequoia GX460 2010-2015 | eBay

Your core is important to us so that our engines are consistently in inventory. Below are actual photos of examples of what may be considered NON Rebuild-able Cores. Engines-USA has been serving the engine industry for over 20 years.

www.ebay.com

Or this, but I'm not sure how plug-n-play an LS640 goes into a GX:

JDM 1UR-FSE 07 08 09 LEXUS LS460 08 09 10 11 GS460 4.6L DOHC V8 ENGINE

MAKE: LEXUS PRODUCT FITMENT: 2007 2008 2009 LEXUS LS460 2008 2009 2010 2011 LEXUS GS460 SERIAL NUMBER ENDING IN: 2307 Parts included: Engine Head & Block Timing Components Intake Manifold Throttle Body Fuel rail & injectors Exhaust Manifold Distributor or coil packs Alternator Power Steering...

www.jdmwestcoast.com

I hear you. I couldn’t bear to do it anyway. You’re welcome, GX community!