Help! - Engine Trouble - Under Warranty

That was what I was thinking too unless it was a fuel pressure test.

 

You’re probably right.

 

Ridgeline...?

 

https://www.bing.com/videos/search?...rm=VDSHOT&shth=OSH.%2BrCe%2BGMT9wDQhEVvugLp9w

 

Let them rebuild it...sell it or trade it...resale has never been better than right now....

 

not time U get a ' Check Engine ' dont hesitate

to check ALL vital fluids

take notice of Any grinding......whining....knocking noises

get the codes read out........... most auto zones etc will read for free

sometimes it takes Immediate attention

other times it can be as little as a fickle gas cap

no need to be the service writers next boat payment

 

You means 3 yrs ago?

Or leakdown test... Anyway, other than coming on here to vent, OP will need to provide some concrete information for anyone here to give an opinion.

 

Yeah 3 years ago.

I was merging onto the highway and started to accelerate. I didn’t really notice anything abnormal. Check engine light and trac off light (goes on n off) came on. Took it to my mechanic who just did the 30k maintenance. He works at Honda and use to work at Toyota.

P11EC code came up when he connected the computer. It’s a broad code but he told me O2 sensor.

took it into the Toyota dealership later that day told them it was the O2 sensor. Now they have had it a few days and are saying it’s cylinder 1 and they are checking for pitting.

 

That's a fairly specifc DTC. Searching for it brings up this thread: https://www.tacomaworld.com/threads/check-engine-code-p11ec.652502/#post-22714053

 

Bet you have a bad valve like many others. There are multiple threads on this. (3.5L)

 

At least it's not the 145hp dog of an engine 3.0 3VZ

 

If it under warranty only they get to exercise options. Not you.

 

Pitting due to "cheap gas"???? What a load of fresh bovine dung that hasn't hit the ground........

If Cylinder 1 is pitted, then the problem lies in the porosity of the casting. They should be able to check this with a simple bore scope.

You are not getting the full story or full diagnostics from the mechanic.

I've been an engineer for 30+ years and this will be the first I've ever heard of "cheap gas" causing pitting.

 

Ethanol gas destroys stuff all the time. I bet the valve seats are pitted because water contamination in ethanol fuels.

 

Another mythconception.

 

Other than the head gasket issue in the 05s and early 06s, the 4.0 is as bulletproof as they get.

Not unusual for them to go 300,000 plus miles with routine maintenance.

What are you basing this statement on?

 

Amen! I have one in my '93 T100. It's a dog and has never been super-reliable but gets the job done. Of course I've had the headgaskets done twice, heads replaced once and had the engine rebuilt a year ago (which was a mistake but that's another story).

 

Probably has the older one.

 

The 3.4 was the best engine in terms of reliability

 

Yeah, the two engines were exact opposites. Toyota has made great ones over the years, but that 3.0 V6 was just an issue from day one. The Supra inline6 3.0 would be a sweet engine swap, not sure if it could be done.

Aaaaand it looks like it has been done.

http://www.off-road.com/trucks-4x4/tech/the-supra-swap-18635.html