Transmission or injector problem

So I have a 17 trd off road and I have noticed that when the rpm is between 1-15k lightly stepping of the gas pedal it sputters. Like it's not getting fuel or it's deciding weather to shift. I notice it going around 30mph, but last night I was going around 40mph and it did it to the point where I had the gas pedal halfway down and it did nothing rpm didn't move nore did mph. My sister was in the car and said she could feel it lagging when I mentioned it. I called to bring it in Friday at the dealership.

Also I did my first maintenance at about 1000 miles, so hopefully they did it right and checked all the fluid levels.

I was hoping maybe someone here will have a fix that I can pass on to the dealer so I don't have to keep taking it back and sell it due to the problem. I really love this truck and want to keep it for a long long time.

I will make sure they check the transmission level again! Thanks for any help or advice short of sell the truck.

 

Make sure the intake piping is tight around the maf sensor; maybe a slight vacuum leak

 

I will check that out today, thank you Steve!

 

Engine control modules are programmed to shut fuel injectors off if the engine is in "coast down" mode for a period of time.
Having the accelerator barely pressed will cause the truck to act exactly as you describe if you're going down a slight hill or slowing down for a residential area or something...

 

Could be bad gas.

 

I don't think so, I only get it from newer gas station and look to make sure the refueling part is higher than the rest of the concrete. It doesn't do it outside of 2k rpm

 

Does it sputter, or feels more like a delay? If a delay, that's normal for this configuration as the transmission will be in a high gear and there is a delay kicking down to a lower gear. Either give it a lot of gas (still delayed, but seems to be a little quicker) or I'd recommend trying it with ECT on and see if there is a difference. If there is a difference, it's because with ECT off, the truck is in 5th or 6th gear at 30 mph at 1000rpm. Basically acting like an old dog.

 

Sorry, I don't know what you mean by having the refuelling part higher than the rest of the concrete.

 

It seems to

It seems to only do it when I'm accelerating and driving slow like a grandma.

Where the tanker puts fuel into the tanks at the gas station they look like water valve coves there no bigger than 8 inch round circles. They should be raised maybe 2-3% grade from the rest of the surface so snow or rain doesn't pool on top of them or collect there and form a small pond. It helps keep the water out of the gas.

 

Then they will tell you it's normal. Use the ECT button, you'll notice a big difference.

 

ECT and "S" mode. It'll be fine. Gotta drive it where it likes it.

G.

 

What are the effects of using the ECT mode all the time, besides maybe mpg going down?

 

Nothing, just changes your shift points, as far as I know. Some talk about changing the fly by wire gas pedal settings, but I'm not sure if that's real

 

I live on back country roads with some hills. I use it all the time and always get between 18-20 MPG's. Switch it off on the highways. I use "S" mode for engine braking as well. Have for years.

G.

 

I do this as well, it's a good habit to have and saves the brakes. Not to mention us who have to drive on ice, it's a life saver.

 

Ok brace yourself.... 'it's normal'...

Well it isn't, but toyota had no fix for it yet

 

So you just downshift instead of braking to slow down?

 

Toyota uses it for downhill descents when you are in auto. I've noticed it when going down steep hills over around 45mph. Tap the brake two or 3 times to lower your speed and the tranny will pick a lower gear to help with the braking. There are a couple hills around my area that it happens on all the time. It will stay in that lower gear until you are back on the gas or drop to a even lower gear on the brake.

 

I have detected a difference in engine response to the gas pedal in ECT. There is less of a lag gap between when you start pressing and completely off.

 

It's possible, it definately feels more responsive. What I haven't tried is putting it in S mode, bring the RPMs up to where it would be if in ECT mode, and then see if the pedal feels more responsive or has the same lag. Basically what I'm saying, does it feel more responsive because of RPM, or has the pedal settings changed? Not a scientific approach, or a Toyota Engineer.
Guess it could be both. I'm still unsure whether I feel a difference off the line, but ya, lots of speculation.