Oh interesting Land Tank did you do your testing with the earlier 07010 or the 21010?
I did it with the 22204-21010 as it is the current offering by Toyota
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Oh interesting Land Tank did you do your testing with the earlier 07010 or the 21010?
Ok great that is what I have as well.
Good, what I've been told is that the newer sensor goes through a cleaning cycle where it elevates the hot wire temp during startup to help remove debris from the last driving cycle during cold startup of the engine.
If Joey has the 07010 he should change it out. And if it came from me he needs to contact me about it.
Dammit! But mine is running so nice![]()
If Joey has the 07010 he should change it out. And if it came from me he needs to contact me about it.
Were your wires on the plug set the same as the directions? Now I am really curious what info your truck was getting from the sensor compared to a stock housing and sensor. Maybe you were giving the computer a zero voltage all the time and it was running lean, hence the power increase you felt? Total WAG but I am actually kind of surprised it would run if the wires and pins in the plug did not match the actual sensor.
Pretty sure I'm not running lean or else I would be plagued by CELs. Plus I usually have a gas smell in exhaust.
How does this work? You are pretty sure you are not running lean, yet you are getting a lean code? Of was this last time the check engine light came on, not code P0171?
What is your actual long term fuel trims? Those should indicate if you are running lean or not.
seriously, it's come to harassing members?
you need to consult your toyota techs to get the low down. The code doesn't indicate that the engine is running lean.
So how do interpret the code?
Christo
you need to consult your toyota techs to get the low down. The code doesn't indicate that the engine is running lean.
go talk to the gurus back in your shop.
Well it sort of does, but its based on the oxy sensor, so if unmetered air is injested, it will trigger a CEL for lean, so it could mean the engine is not running lean, technically, but without testing it, it hards to say and be definitive.
Thats what the fuel trims are for, look forward to seeing what they are.
I don't need to and I don't play with words. You are trying to skirt the issue. Yes, the there is too much O2 in the exhaust stream. So, the only thing that could be causing it that would not have the motor run lean is a air leak in the exhaust that could let O2 get in the exhaust post combustion. Any leak pre MAF will be accounted for in the MAF reading, any leak post MAF before combustion can cause it to run lean.
However in the case the motor was just rebuilt and if I recall correctly they checked a bunch of system and came up empty. I would assume all the system were checked.
So - as copied from techinfo.toyota.com
P0171
P0174
"When air fuel ratio feedback is stable after warming up engine, fuel trim is considerably in error on LEAN side (2 trip detection logic)"
So, failing any of these systems being faulty, what is going on to cause the code? Smelling fuel in the exhaust is not a check for anything.
Air induction system
Injector blockage
Mass Air Flow (MAF) meter
Engine Coolant Temperature (ECT) sensor
Fuel pressure
Gas leakage in exhaust system
Open or short in Air Fuel Ratio (A/F) sensor (bank 1, 2 sensor 1) circuit
Air Fuel Ratio (A/F) sensor (bank 1, 2 sensor 1)
Air Fuel Ratio (A/F) sensor heater (bank 1, 2 sensor 1)
A/F relay
A/F sensor heater and A/F relay circuit
Ventilation valve and hose
Ventilation hose connection
ECM
So if the truck is not running lean according to you, what is causing it then?