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Torque Pro is a good / inexpensive live data scanner - code reader
Originally Posted by Ssgt Pool
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I am beginning to think that the shop who put it in forgot to hook some sensor up, which there are so many.
...Where can I find one of these live scanners?
You're right, there are a bunch of sensors and its easy to miss one. However, there are practically none that I can think of that could sugnificantly effect power that are not monitored for circuit integrety - opens or shorts. That just highlites the need for a scanner, and the preferability of one that reads live data so you can 'monitor' certain sensors.
Live scanners? There are lots of code readers available, some that can read live data. I use Torque Pro app on my Android phone and a bluetooth OBDII dongle. I can hardly talk about Torque Pro without sounding like a salesman for them, but I'm not. But based on a rather extensive programming background I have a healthy respect for the developer's intuitative design and ability to customize the App.
Customizeability is an absolute MUST for an OBD tool. When you consider the vast 'range' of differences in vehicle manufactures and models ---- you realize how difficult it would be to produce or sell an all inclusive OBD Tool. Just consider a Powerstroke w/ glow plugs, direct injection, and a turbo versus a 5.4L 3v w/ spark ignition, EFI, and variable valve timing. Then there is the Honda Prias hybrid electric. It would cost a million dollars to get a ONE FITS ALL.
The simplest ones will read/clear DTC codes. Some will display the basic (approx. 20-30 or so) sensors and perameters mandated by federal law dealing with emissions. But some (including Torque Pro) will send OBDII commands, read live data and allow you to create new dashboard screens and customize them with new gauges displaying any standard or extended sensor, or adding additional sensors that your specific vehicle is equipped with. (I have found 220 on my 2004 5.4L Lariat). It will log any sensors to a file, send files / screenshots via email, facebook, or twitter and lots more. And it only costs $4.95 on Google Play (do not use knock offs that are shipped with some dongles!).
I do not see a thing funny or flaky about your readings. Fuel trims are WELL within normal variations under operation (ie: 1750 rpm / 62 mph). The PCM maintains a multi-dimensional table for fuel trims at different engine RPM's, engine Load conditions, etc. Then it constantly updates STFT with live '+''-' adjustments from 1 and migrates those into LTFT over time. That allows compensation for aging or deteriorating components while maintaining optimum fuel/air mixture. It is not uncommon for them to vary up and downwards as much as maybe 10%. (DTC is set when LTFT exceeds 25% -while STFT is > 10%). And, there are NO trim sensor 2's for fuel trim on either bank, so the 99.22% is the maximum produced by the fuel trim formulas.
Resist the tendency to look for one that says "HEY look here - I'm the problem". They all have to be weighed against each other and actual operating conditions/circumstances. (Ie: the variation in the three throttle positions, 21.57% - 9.41% & 14.51%, are not necessarily unusual in a 'snapshot' for our 'fly by wire' systems.) But a subtle problem in accel position sensor or throttle position sensor and the PCM's reluctance to command the throttle actuator open further could certainly cause a problem. Watch those under varying conditions, although there is a VERY extensive rationality check against the electronic throttle being ran in the PCM constantly.
I'm more familiar with gm/sec mass air flow than Lbs per minute, but (lbs/min*7.55987 = gm/sec), which = 32.58 gm/sec and that is around where mine would run (at 62 mph, 1700 rpms, 80% load, 21% throttle, 30.5º spark advance - all pretty normal - unless I floored it). Fuel Rail pressure is right where it should be (39-40psi) and I suppose for where you live - 34º intake air temp (slightly warmed by engine compartment) might be pretty close. If it is that cold outside, while not "WORKING" the engine very hard, coolant temperature might run (181.4º), slightly below the thermostat temperature some of the time.
I do not see anything out of order here.
If you get a DTC, be sure to read and save the Freeze Frame data
Last edited by F150Torqued; 01-01-2017 at 01:09 PM.
So if you think that nothing is out of order, where do I go next, because it still does not seem to have the power it should. Is it possible to have a manifold gasket leak, and no DTC code? It has not given me a code since the motor was installed.
So if you think that nothing is out of order, where do I go next, because it still does not seem to have the power it should. Is it possible to have a manifold gasket leak, and no DTC code? It has not given me a code since the motor was installed.
Hummmmm? "... where do I go next"? Having thought about it a good bit - the only thing that I can think of - WITH NO DTC - might be the engine is in a condition known as "FMEM" (Failure Mode Effects Management). Our trucks make a valiant effort to protect themselves from self destruction or further damage based on a S*@!&!%t load of logic running in the ECU. Under some conditions - the OBDII readings are STUFFED with a value that will keep things going - preceding a DTC, and perhaps (IDK) for longer by limiting power or stresses that might damage another part.
According to my research and 'hacking' on my truck, I have found that there are TWO OBDII ports that contain eight 'flags' (bits) each that are set to tell technicians when corresponding OBDII readings are NOT ACTUAL READINGS, but rather substituted values for MFEM mode. They are located at PID # 1106 and 1107. I do not know each of the "bit" locations (from 0 to 7 right to left), but know that both bytes should be ZERO if nothing is in failure mode and no OBD values are "substituted".
I would try to verify these two readings are both ZERO (if not try to figure out which system is represented by the flag).
1106 b? PCFM - In Electronic pressure control failure mode
1106 b? MAFFM - Mas Air Flow in FMEM mode (mfmflg)
1106 b? ECTF - Engine Coolant Temperature Failure FMEM mode
1106 b? EGRFM - EGR system in failure FMEM mode
1106 b? IATFM - Intake Air Temperature Failure FMEM mode
1106 b? VSSFM - Vehicle Speed Sensor Failure FMEM mode
1106 b?
1106 b?
12-04-2016, 12:02 PM
Torque Pro is a good / inexpensive live data scanner - code reader
