Reduced power and check engine light on again!

I was on my way to work this morning, and as soon as I got on the freeway and accelerated, I heard a "clunk" noise and the check engine light came on. I wasn't able to accelerate, and it felt like it was going to stall. I was able to limp it home, but wasn't able to go over 20mph. I had a wastegate go out on me at 150 miles, after only having the truck a few days when I first got it. I'm at 25K now. This doesnt feel like it did before. I could drive the truck but it was lacking power. This time it's undeliverable. I'm waiting for the dealership to open so I can give them a call.

 

Le'Mon'aid time! Screw that noise, brand trust would drop like a rock and I wouldn't want the truck back with a history like that.

 

I didn't because I was in a rush to get to work. It's at the dealership now. I'm waiting to hear back. I'm gonna be pissed if it's the same issue. I asked last time to have both wastegates replaced but they only were able to get one, and that took a month and a half. The dealership I bought it from wouldn't return my calls after the first issue. We had to battle with Toyota as far as getting reimbursed for repairs and the rental car. At that time we were moving and it wouldn't be ready before we left. Toyota said they wouldn't pay to have it shipped to us and we would have to come back to get it. With some help from the second dealership, they shipped it free of charge and waived our first two payments. So now we'll see what the issue is and what Toyota has to say.

 

I forgot to post this. This came up right after the check engine message.

 

The service manager called my wife yesterday because I'm at work for the next two days. She said that he asked her questions that he said we're from Toyota. What time of day did this happen? What type of gas do you use? What was the weather? How were the road conditions? A few others that she forgot. He said the tech is working with Toyota and running diagnostics. He said his tech hasn't stated yet this morning and he doesn't have access to his notes. He wasn't able to give me an update, but should have one by the end of the day.

 

So the service manager called my wife and said in a round about way, that it was my fault. He said the truck was overfilled with gas. He said that the Tundras and Prius are sensitive to overfilling and it can cause issues. He said that once the pump clicks, you shouldn't try to put more gas in. My wife said that has never happended in the past, and that I never try to overfill it. Even though it was "my fault", he put it under warranty.

I've read through the forum, and unless I'm missing something, I haven't seen any overfilling issues. Does anybody have any more info on this? I'm picking the truck up tomorrow once I get home from work, so I'll have a ton of questions for them.

 

Just for clarity, does your wife speak the truth that you've never pumped more gas after the click-off?

 

Our holy god Ahmed, aka AMD, aka car care nut had a video about overfilling tanks I believe.

https://www.youtube.com/watch?v=jPiiqcDxDxY , but he didn't mention anything about vehicles shutting down - https://youtu.be/yXpeIBmwk5M?si=gLCqfhRACVdfE-MJ&t=286

Maybe it's in another click bait style title video where you have to watch the damn video to know what they are talking about. If the dealer gets the truck going again and it happens again, I'd go to a different dealer.

 

Soooooo, what did they say failed?

 

Once it clicks, it's done. I've fueled up hundreds of times with no issue. I never over fill it. The only thing I can think of, is that I went to a new Chevron that I've never been too. I drove around a few days after that with no issue. My truck sat the day before I left for work.

I'm going to find out more tomorrow. He said it wouldn't vent properly and fuel backed up in the line causing it to clog.

 

Wow! talk about customer service!

"You flooded your engine by putting too much gas in the tank, We will need $195/hour to fix it"

"If you put 87 oxtane gas in it, you can squeeze more in. If you use 92 then stop filling at the first pump click as per page 4,567 of the user manual"

We need to make up stories to blame you and deny your warranty. Also, don't put too much air in your tires either!

 

Yea I'm kinda like "wtf?" at this point. Just all of a sudden this happens? Is this going to be another recall? The first time I took it in to this dealership, maybe a year ago, they had never seen one before. They don't get too many of them in for service. I'll find out more tomorrow and give an update.

 

Maybe the fuel line rubbing issue will solve the over fuelling issue? If gas leaks on the ground it might not make it to the evap system??

But seriously, where is the pickup line for the vent? These trucks are supposed to be able to handle inclines and that will cause all sorts of sloshing of the gas? If vent is at the top of the filler neck, it is pretty hard to get gas into it as it settles and as soon as you put a few miles on and burn it, the fuel in the neck will head into the tank.

Was the suspect filling done at a self serve or full serve station?

 

So I picked up the truck this morning and talked to the service manager. He wasn't really any help. He said they ran diagnostics and overfilling is what the "problem was". He started in again about the importance of not overfilling after the nozzle clicks, blah, blah, blah. I told him again that I never do that. He asked me to let him know if it happens again, so that he can file a claim with Toyota. He said that 80% of Tundra owners would need to report the same problem for it to be considered a recall issue. I asked if there had been any other issues rwported and he said that Toyota didnt say. I told him about my previous issue and he said that unfortunately, I'm a "guinea pig".

I was thinking about it last night. Trying to figure out when I got gas. I filed up on the 28th and drove 32 miles round trip for my son's hockey practice. Drove around town between the 29th and the 1st. Left for work on the 1st and drove 30 miles to work. I was at work for two days and then drove 30 miles home on the 3rd. I didnt drive it the rest of the day the 3rd or the 4th. I went to take my son to school on the 5th and both of my key fobs were dead, which I thought was weird. I replaced the batteries, and then drove 62 miles round trip for my daughter's doctor appointment on the 6th. The 7th I drove to work and didn't make it 10 miles before the check engine and reduced power message came up. On a full tank it's about 420 miles to empty according to the gauge. I drove about 266 miles or more between fill up and this happening. This shouldn't have happended. If it was overfilled, the issue should have been instant right? I've filled this truck up hundreds of times with no issue.

All I've ever owned is Toyota. When I started dating my wife 10 years ago, she even had a Toyota. This is my 4th Tundra. We like Toyotas warranty and mantinence, we had a hood relationship with a dealer in SoCal before we moved, we're a Toyota family. I know I've only had two major issues, not to mention the recalls. But this passes me off. Toyota just throws things out all non chalant. The wastegate issue was "well we don't have the parts available to fix it right now", eventhough they were building trucks and taking orders. This overfill issue makes no sense to me. I feel like they're just reaching, and then saying well YOU, over filled it. Like I don't know how to get gas?! Then ask like you're doing me a favor by putting it under warranty? The service manager told my wife yesterday that Tundras and Prius were sensitive to overfilling, but couldn't give me any other cases involving 3rd Gen Tundras? I'm ranting at this point but wtf?! Owning this truck and dealing with Toyota has made me question whether or not I'll buy Toyota again.

 

Sounds like a bad dealer, and they probably lied to you about this overfilling bs. Nobody here reported any issues with overfilling for the past two years, and you stated that you did not overfill it, so it's probably not the cause

 

I'm not buying it either. The tech stated in the paperwork that "Found DTC P03000 Multiple Cylinder Misfire. Tech could not verify misfire during idle. Test drove vehicle several times for a total of 18 miles and found vehicle working correctly. Tech test drove vehicle cold/hot @ speeds of 0 - 65mph. No misfire counts available on GTS live data. Suspect customer may have overfilled fuel tank causing fuel to enter EVAP system. No recommendation at this time."

So nothing was done. Sounds like they're just blaming me.

 

That code and the overfill theory don’t seem to coincide but I’m no expert. However, overfilling is a major problem in the 3rd gen Tacoma. The fuel that enters the top of the filler neck runs right back down the vent line into the charcoal canister and it cant purge fuel, only vapor. It can also damage the vapor pump on the canister. (and you have to lift the bed to get to it on top of the tank) Searching around under my 23 Tundra this week looking for this line-crossing fire hazard I was happy to see the canister mounted above the spare tire, easy to get to, and found a huge safety loop in the vent line to the right of the tank that goes up the side of the bed higher than the filler neck. It would be hard to get fuel over that hump and back to the canister.

 

I feel for you guys with shitty dealers , makes everything a pain in the ass

I’m so lucky that we have an awesome one here , they take care of everything no bs

 

Wow. Overfilling? Over reaching for an excuse.

I have "overfilled" 9 different Toyotas since 1985 and NEVER had a problem. Again: never.

Boy howdy are we a long long way from just driving a truck. This truck "tech" is truly Orwellian.

 

The overfilling excuse was probably so that they can charge warranty more for the repairs.

I'm more worried that this misfire CEL will be back for you since no cause was found

 

The evap system only functions between 3/4 and 1/4 tank on most vehicles. It will draw vapors in from the charcoal canister to be burned, or in your case, raw fuel. Also this can damage charcoal canister, which will release bits of charcoal and make canister purge solenoid fail over time. Not knocking you, just giving more info.

 

So much for the ol' 2-click method. Let the pump click, wait 30 secs, and top off. Someone better tell the TFL guys too. ha.

 

My wife didn't tighten her gas cap all the way on her 2022 4Runner one day. The check engine light came on when she started it the next morning. My reader showed 6 error codes all relating to the EVAP system. I tightened the cap, cleared the codes, and the check engine light went off. 2 of the EVAP codes took a few driving cycles to clear.

My point is, overfilling the tank would have likely caused similar EVAP codes, not a cylinder misfire code. And overfilling wouldn't have thrown the truck in limp mode. Your stealership is flat lying to you, IMO.

Matt

 

My thoughts exactly. The fact that I drove for almost 250 miles after, seems like the issue would have come up sooner. I tried talking more about it with him, but he kinds blew me off. I just feel like Toyota has been "hush hush" on a lot of issues. I'm really considering switching it up for the next truck.

 

So if it was overfilled, wouldn't the problem resolve once I burned off enough gas? Or could the problem still happen at a later time?

 

Yes it can happen later, I kinda worded that poorly. Once raw fuel is in canister, it will be sucked out when evap eventually does its test. That makes mixture overly rich and misfires because it's way too much fuel.

 

Same exact error message popped up on my 2022 Toyota Tundra SR5 4X4 Long Bed with 22300 miles on it. Gas tank was down to 1/4 tank when error message occurred. Brought it to the dealer. They pulled the fault code. Same exact fault code of P0300000. They found nothing else. Said come back if it happens again. Sent me on my way. This was yesterday.

Just wondering if your problem ever reoccured?