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

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  • #16

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

    Very interesting indeed. My Magnum has the variable intake runner dealio as well.......will have to look into that possibility.
    Last edited by STINEY; May 6th, 2016, 10:10 AM.
    Of all the paths you take in life - make sure a few of them are dirt.

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    • #17

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

      The actuator did not respond to the test which makes me wonder if the IMRC PID I am logging is a "desired" value or an "actual" value. It would make sense if it is a desired value because it seems to be active for the first few inputs from the accelerator pedal, then it goes dormant. Cycling the key causes it to go through the same sequence. I found and added another PID to log which is IMRC FAULT. So I think it is a desired value and when the actuator does not respond, the fault is triggered. I will see if this is the case on my way home for lunch.
      Life is short. Be a do'er and not a shoulda done'er.
      1983 Mustang GT 552/C6 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
      1973 F-250 460/E4OD http://www.bangshift.com/forum/forum...uck-conversion
      1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

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      • #18

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

        Logged and watched it on the drive home. I was surprised to find both are on and off at nearly identical times. It seems as if it is commanding IMRC open and when it is not verified on the monitoring circuit, the fault is triggered. This is supported by the fact that the fault log is offset from the commanded log by a fraction of a second.

        When the IMRC is commanded, timing and actual throttle position act as expected. So this makes me wonder if a guy could test it by using the wire the PCM un-grounds to trigger a relay on the 12v-5v monitor wire essentially emulating the actuator to the PCM and achieve the same result. Similar in concept to this:

        http://www.accutach.com/general-how-...-relay-circuit

        This would just be a test to see if the PCM seeing a properly operating actuator actually cures the weird bog. I'd rather not just throw parts at it if it does not fix the issue.

        If you haven't noticed, I'm kinda having fun with this.
        Last edited by BBR; May 9th, 2016, 01:30 PM.
        Life is short. Be a do'er and not a shoulda done'er.
        1983 Mustang GT 552/C6 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
        1973 F-250 460/E4OD http://www.bangshift.com/forum/forum...uck-conversion
        1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

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        • #19

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

          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.
          Beagle and Russell like this.
          Life is short. Be a do'er and not a shoulda done'er.
          1983 Mustang GT 552/C6 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
          1973 F-250 460/E4OD http://www.bangshift.com/forum/forum...uck-conversion
          1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

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          • #20

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

            Do they make imrc delete for your motor, seems like I have heard of that on other mod motors?
            http://www.bangshift.com/forum/forum...-consolidation

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            • #21

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

              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.
              Life is short. Be a do'er and not a shoulda done'er.
              1983 Mustang GT 552/C6 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
              1973 F-250 460/E4OD http://www.bangshift.com/forum/forum...uck-conversion
              1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

              Comment


              • #22

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

                Cool thread, thanks for sharing this stuff.
                1997 Ranger 5.0L HO, GT40 heads/tubular intake, 65mm TB, 1.7rr, B303, Tri-Y headers, dual 2.5" exhaust, Flowmaster mufflers, T5 trans, Tri-Ax shifter, CenterForce Dual Friction clutch, 8.8 Traction Lok 3.55 gears, Cobra 13" front brakes, Cobra 11.65" rear discs.
                1997 Mustang GT
                sigpic


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                • #23

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

                  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.

                  TheSilverBuick likes this.
                  Life is short. Be a do'er and not a shoulda done'er.
                  1983 Mustang GT 552/C6 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
                  1973 F-250 460/E4OD http://www.bangshift.com/forum/forum...uck-conversion
                  1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

                  Comment


                  • #24

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

                    Next time you have an issue with your mustang I'm going to suggest the catalytic converter
                    BBR likes this.
                    Escaped on a technicality.

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                    • #25

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

                      lmao! Yeah, the proper verbage is "Sounds like clogged cats", so make sure you get it right!
                      Life is short. Be a do'er and not a shoulda done'er.
                      1983 Mustang GT 552/C6 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
                      1973 F-250 460/E4OD http://www.bangshift.com/forum/forum...uck-conversion
                      1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

                      Comment


                      • #26

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

                        Noted!!
                        Escaped on a technicality.

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                        • #27

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

                          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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                          Life is short. Be a do'er and not a shoulda done'er.
                          1983 Mustang GT 552/C6 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
                          1973 F-250 460/E4OD http://www.bangshift.com/forum/forum...uck-conversion
                          1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

                          Comment


                          • #28

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

                            Pretty cool stuff! I'm going to have to start reading this section of the forum.
                            Tom
                            Overdrive is overrated


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                            • #29

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

                              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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                              • #30

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

                                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.
                                Life is short. Be a do'er and not a shoulda done'er.
                                1983 Mustang GT 552/C6 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
                                1973 F-250 460/E4OD http://www.bangshift.com/forum/forum...uck-conversion
                                1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

                                Comment

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