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Logging the F150 with Torque Pro for Android to track down a timing anamoly.

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  • BBR
    replied
    They both have their place I suppose. FORscan has a lot of Ford vehicles already decoded so it is easy to connect up and start collecting data. TorquePro is more flexible, but takes a lot more thought and involvement to get up and running because the PID info on the internet is hit or miss and you have to write the formulas yourself. (or at least key them in if someone out there has already figured it out) Sorta like using a PnP Megasquirt vs. building a MS kit from scratch. Same results, but one gets you feet less wetter.

    They are both super cheap and can output a CSV datalog file.

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  • CDMBill
    replied
    James, did you settle on the app you liked best or are you using both? I saw the Torque screen shot after you mentioned FORscan? I've been chasing a O2 code for some time and it's down to the upstream on the passenger side of my DD '03 F-150, which is a bitch to get to and I need a fancy socket. Nice sleuthing on this.

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  • StephanParis
    replied
    I see, how does a monitor pin activate the CMCV actuator though? I would think it just monitors instead of commands the actuator to move.

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  • BBR
    replied
    I grounded the black/white monitor wire. When it is grounded (voltage pulled low), the pcm thinks the cmcv valves are open. However, mine are still stuck closed because a wiring harness is mislocated and obstructing the actuator's movement.

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  • StephanParis
    replied
    Howdy!

    I'm having an issue similar to this, if not identical, on a used 2006 F-150 that I recently purchased. It had a dozen DTC codes that I managed to get rid of after some work but one remains no matter what I do: P2006. Acceleration is very sluggish and it takes forever to get up to 50-55mph. I've replaced the VCT to get rid of some of the other codes and also replaced the CMCV aka IMRC actuator but this code still remains. I also have the Forscan app and the OBDLink MX bluetooth scan tool so used it to monitor what the inputs to the CMVC were and it's doing exactly as you described. When the CMCV Command circuit is active the CMCV Fault has an identical matching signal. The monitor however doesn't have any kind of signal regardless of what the other 2 are doing. I also noticed that the Command signal goes away after a couple minutes and flatlines for the rest of the drive.

    So after reading some threads on f150online.com and other F-150 forums I followed the procedure you posted but the grounding the CMCV Command wire didn't do anything at all. The CMVC didn't actuate and there was no change on the monitor wire. I assume that you meant you grounded the blue/orange wire which is pin 50 and not the black/white wire pin 43 b/c that one is the monitor and not the command pin, per the instructions posted.

    Anyhow, so this is rather puzzling as either the wiring is damaged and open or grounded where it shouldn't be or the brand new Motorcraft CMCV actuator I installed was DOA. I didn't know the P2006 code would be so persistent otherwise I would have bench tested the actuator and also tested the wiring directly at the CMCV connector.

    Any suggestions?

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  • Huskinhano
    replied
    Pretty cool stuff! I'm going to have to start reading this section of the forum.

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  • BBR
    replied
    Just thought I would add a screenshot of a current datalog. Notice when the accelerator pedal (green line) is mashed from 0 mph, the ignition timing (white line) rises and actual throttle position (pink line) really stays closely in sync with the accelerator pedal.

    Click image for larger version

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  • TheSilverBuick
    replied
    Noted!!

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  • BBR
    replied
    lmao! Yeah, the proper verbage is "Sounds like clogged cats", so make sure you get it right!

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  • TheSilverBuick
    replied
    Next time you have an issue with your mustang I'm going to suggest the catalytic converter

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  • BBR
    replied
    It's been fun learning how to datalog, read the logs and pick through them to find the cause of a drivability problem without throwing a bunch pf parts at it hoping it fixes it.

    The advice (and I use that term loosely) you sometimes get on forums is horrid. Everything from "the foam sealing your air filter is bad" to "clean your throttle body" to "change your plugs" to "bad 02's" to "clogged cats" (my favorite) are the typical responses. The "clogged cats" comes up in just about every drivability thread and I just want to scream and throw heavy objects at the computer screen.

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  • Teddyzee
    replied
    Cool thread, thanks for sharing this stuff.

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  • BBR
    replied
    No they do not because they are made into the plastic intake manifold. They are separate on a Mustang so you can just install delete plates.

    I went ahead and ordered an actuator today and will install it when I get time.

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  • Russell
    replied
    Do they make imrc delete for your motor, seems like I have heard of that on other mod motors?

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  • BBR
    replied
    Bam. Using the operation description on the other page, I realized that for the PCM to think the actuator was open the black/white monitor wire needed to be grounded. So I found that wire at the PCM connector, snipped, stripped and grounded it. Blammo, the IMRC enable light in Torque came on as well as the fault light. Checked the codes and sure enough, the P2006(IMRC stuck closed) was gone and was now replaced by a P2004 (IMRC stuck open), Took it for a test drive and yippee no more massive timing retard. The truck was perky and responsive even when the intake air temps were in the 115 degree range. I am going to leave it like this for a while and see how it runs, but so far I am super happy that I found the root cause of my massive bog when the weather is hot.

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