Posts
5748
Joined
12/7/2009
Location
Long Beach, CA
US
Anybody have a recommendation for a setup for my android phone? I need real time fuel trim readings specifically. As well as the common stuff. I have a lean condition on both banks and have yet to find the problem. The scanner I borrowed just displays codes and monitor status.
Thanks in advance
Thanks in advance
If you are running a lot of boost, your ECU might not be compensating enough and is past it's range, or possibly the injectors can't flow enough.
Just out loud thinking Since you mentioned both banks.
Are you throwing a CEL?
I can read Load, MAP, Intake Air Temp, TPS, Timing, GPH, everything the gauges show, I can't remember everything. I know it reads more info than what my rig sends to the plug.
I wish I could read EGT's with probes, but I'm stock. That really tells you if you are lean or not.
All in it cost -
$25 for OBDII reader
$5 for Torque Pro
$50 for used Samsung Tab3
Works as well or better than the two $700 Edge readers I have in my other trucks. What exactly it will do depends on what PIDs have been developed for your exact rig. The neat thing is guys are writing new ones all the time........
The Shop
The codes are P0171 and P0174. What is odd is that it shows up twice for each code. 1 P0171, 2 P0174, 3 P0171, 4P0174.
Have been checking out Torque Pro.
Also 2 of my diagnostics will not complete. C and O.
You can build your own smoker if you have an air compressor. Just get a small paint can, fill it with mineral oil, screw a glow plug from a diesel into the lid (I used a ford 7.3 plug), hook that up to a battery charger set an amp or 2. Put a plug for the air compressor to breath into it, set the regulator at just a few psi so you don't blow out seals, and then whatever outlet you want. I siliconed a long piece of carb fuel line to the lid and it fits the intake manifold on most ford's where the brake booster is. But whatever works for you.
An intake manifold leak usually just doesnt happen.
The 2 bank deal, especially the P0174 odd code is strange.
If your fuel pressure is low, or drops under a load, it can create a lean condition, but usually it will stumble under a full throttle load. How long since new fuel filter if it doesnt have an in tank one only?
Well monitor the fuel pressure, if pressure is dropping it's time to yank the bed off.
Pit Row
Here is some freeze frame data:
Freeze frame information:
------------------
Fuel Status = 0 byte
Engine Load = 82.745 %
Engine Coolant Temperature = 188.6 °F
Fuel Trim Bank 1 Short Term = 3.906 %
Fuel Trim Bank 1 Long Term = 33.594 %
Fuel Trim Bank 2 Short Term = 5.469 %
Fuel Trim Bank 2 Long Term = 36.719 %
Engine RPM = 2,392.75 rpm
Speed (OBD) = 75.186 mph
Timing Advance = 15 °
Intake Air Temperature = 71.6 °F
Mass Air Flow Rate = 346.604 cfm
Throttle Position(Manifold) = 30.196 %
Run time since engine start = 471 s
O2 Sensor1 Equivalence Ratio = 1.011
O2 Sensor5 Equivalence Ratio = 1.01
Distance travelled since codes cleared = 526.301 miles
Barometric pressure (from vehicle) = 14.649 psi
O2 Sensor1 Equivalence Ratio(alternate) = 1.011
Catalyst Temperature (Bank 1,Sensor 1) = 1,371.02 °F
Catalyst Temperature (Bank 2,Sensor 1) = 1,371.02 °F
Catalyst Temperature (Bank 1,Sensor 2) = 1,179.5 °F
Catalyst Temperature (Bank 2,Sensor 2) = 1,179.5 °F
Voltage (Control Module) = 13.261 V
Engine Load(Absolute) = 45.49 %
Commanded Equivalence Ratio(lambda) = 0.948
Relative Throttle Position = 10.98 %
Absolute Throttle Position B = 65.49 %
Accelerator PedalPosition D = 31.765 %
Accelerator PedalPosition E = 47.451 %
End of report.
Typically long term adaptive numbers biggest factor is downstream O2 data. That O2 may be sending bad info, or it may not. The catalyst may not be doing its job of knocking down CO any longer. Also, bad wiring or connection can skew the numbers.
You didn’t mention any performance problems, and low fuel pressure would generally give that symptom. Low power, spitting, sputtering, etc. However, a fuel pressure test itself won’t do much for you unless it’s super low. A fuel quantity test would give you the information you need. Meaning you need to activate the fuel system and take a physical measurement of the amount of liquid fuel the pump is moving into a container in a specific amount of time.
I’m not intimately familiar with Toyota products but a quick look on google found a lot of guys with mass air flow sensor issues throwing your codes. Dumb question maybe, how’s your air filter? Installed or recharged a K&N recently? That oil can wreck a mass air flow sensor hot film wire.
Just some ideas. Good luck!
For some of the other responses: I do not have a vacuum leak anywhere. Smoke tested. The freeze frame data confirms that lean condition exists at speed and rpm's. A vacuum leak would not show that unless it was severe and in that case it would not idle.
No biggy. $50 for the aftermarket MAF.
Thanks for the advice.
I clean the maf every air filter change.
Glad to see you got it fixed
Post a reply to: OBD II device and ap