OFFICIAL MY22+ Tundra/MY23+ Sequoia V35A-FTS (Type '21) Engine Failure Discussion Thread

There is a sticky to post information on your engine failures that we are not supposed to turn into a discussion thread. Today, I inadvertently started to turn it into a discussion thread anyhow. So creating this as the discussion thread.

Did I mention...this is the discussion thread?

 

^

 

@ryanwgregg you mentioned: "Pre-ignition can cause premature wear of the bearings. Internal sources have said it was related to a bad batch of bearings that supposedly wear numbered in the less 50...but I don't trust the number. I do trust that we have bearing issues."

Wouldn't that trigger knock sensors, though? Or do we already know it is triggering knock sensors right before the failure. If so....yeah, its probably the octane

 

Imho you guys are blowing this way outta proportion

100k+ units and a handful of engine failures and we have a discussion thread?!?! roflmao

Go visit the forums back in 2014 when the ecoD just came out, they had a known and well documented 2-3% engine failure the first 2-3 years (0weight was a root cause). It was so bad fca had to put out lists of how many long blocks were on backorder like every month. A few times the first page of the forum I was lol and counted like more then 50% thread topics were about dealer/engine troubleshooting

This is crying wolf imo of course

 

I set it up because we were starting to have discussions/speculations in the sticky thread that was tracking failures, which the OP specifically asked us not to do in his first post.

The intention of this thread isn't to slam Toyota or determine a rate of failure. Just to discuss! Perhaps we track down a common thread among the failures. Probably not. None of us know the rate of failures. It could be lower than the old vaunted 2UZ-FE 4.7 I-Force, or it could be higher than the EcoDiesel.

And yeah...that generation of EcoDiesel was a disaster. Historical proportions.

 

Are you saying running higher octane would prevent the issue?

 

Blasphemy!! the 2UZ is infallible! No comparisons will be entertained.

 

Thanks, that really helps.

 

If you’re interested, I would gladly contribute financially to cover a portion of the cost of your subscription. You’ve already gone above and beyond for many of us on this forum. It’s time we found a real way to repay you for your generosity.

 

Understood. My offer is not time limited, so will always be available. Don’t ever hesitate to ask.

 

my KLCV seems to be between 16-18 on 87.

 

Less than 1000 miles, only did some 0-60 runs twice. Mostly driving under 55.

Sunoco 87, they partner with the grocery market chain here so I get gas points. I've only fueled 2 times so far.

 

I honestly don't know what this means, or what numbers are better/worse...

How do you even calculate it?

 

Knock Learn Correction Value, basically what the ECU learns it can advanced the timing based on past knocking. Did double check currently i'm at 17.8 Deg.

It can be read from the Engine ECU using any software the support the toyota PID's.

 

And do you want a higher or lower number?

 

Higher Advanced is better (More power) I'm not sure what is good for this engine it starts on a learned value reset at 13, and advances slowly until knock is detected. I have been been checking on it too see if it correlates with break in fuel economy improvements.

 

Seriously @ryanwgregg if you set up a Patreon or something I would throw a few bucks a month. You - and your info/insight - have been one of the main reasons I come to this forum every day. If you continue to extend your tendrils behind the curtain, that would be amazing for all of us.

Keep on given'r.

 

I would not object if they simply went back to that engine, even with the extra fuel costs. I have a retired GX470 with it...if only the frame wasn't crumbly, I would not have become a Tundra man

 

I would also contribute.

 

Just for discussion sake, I see up to 38 degrees advance timing running 87 octane on my 5.7. Of course NA vs forced induction…

 

Just wondering, why this magic number "4xK miles"

 

Ah... Thanks

Still wondering why it happens

Main bearings - drop in oil pressure?
Rod bearings - too much load , oil pressure?

 

Thanks

 

Why wouldn't they issue a recall for those affected if they know the bad batch number?

 

A somewhat related tangent, I would like them to come forth with what the deal is with the oil filter on this engine, Completely different part number and is there anything special about it with regards to the oiling system. Seems like they could have just put an F1 on there, and I think many dealers especially early on not having the new filter on the shelf sent people out with an F1 rather than sending them home to come back.

If the F1 is interchange send a Tech Tip about it. If it not let dealers know, so they don't accidently make the wrong substitution.

 

My 2022 tundra”s engine is in breakdown. Low oil pressure and knocking in engine. 25k miles 11 months old .
Today, I found out another tundra was brought in dealer yesterday for the same issue.

1st year - 3rd gen owners need to beware.

 

Is it still 0.00000007% or so?

 

Sadly not limited to just the first year it seems. There are a few 2023’s that have been affected as well.

^ Strike the above, a search yielded no 2023’s with the issue.

 

Assuming it's as bad as the 2 primary echo chambers say (Here & Facebook), I keep waiting on the automotive media to pick up on this story in the same fashion as the Turbo Wastegate issues.

Even MotorBiscuit, as critical as they are on the new Tundras, hasn't written about the bearing failure issue.

I'm not downplaying the issue. Just waiting to see if it gets serious enough for it to bubble up into the media. Lord knows the wastegate issue was plastered all over the news from near the moment it happened. I'm surprised this hasn't gotten much traction.