Proof that Intellegent diagnostics does work!

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • eddie8
    Senior Member
    • Mar 2008
    • 273

    Proof that Intellegent diagnostics does work!

    I had a 2015 Lincoln MKZ that was setting a code. This code was P008A*00 | Low Pressure Fuel System Pressure * Too Low * Pending DTC. Look at the actual and desired data pids. see the difference? I went and performed my basic diagnostics on the low side fuel pump and the pump tested fine. The failure on this vehicle was the fuel psi sensor.
    When doing any type of diagnostic always pay close attention to your data pids especially your actual vs desired. The intellegent diagnostic section grouped the data pids together for faster and less time consuming/wasting diagnosis. I hope this helps some of you to speed up and shirten your diagnostic time. I had my conclusion in under 20 minutes thanks to the Intellegent Diagnostic section of my Zeus.
    Attached Files
    Edwin Hazzard
    Southeast Mobile Tech
  • Witsend
    Banned
    • Nov 2012
    • 2942

    #2
    For a quick Go, No Go KOEO check of sensor, If the low pressure side doesn't have a test port, with key on engine off, if you are able to safely vent all the fuel line supply pressure,and monitor the low side fuel pressure sensor pid, it probably should read 0 psi.(or at least no more or less than plus or minus 10psi either way) Probably quicker than cobbling adapters together to hook up a fuel pressure gauge.
    Last edited by Witsend; 06-10-2019, 06:08 AM.

    Comment

    • tech25
      Senior Member
      • Oct 2017
      • 172

      #3
      how do you know its the fuel pressure sensor?? did you hook up a mechanical gauge and verify the pressure??

      Comment

      • GypsyR
        Senior Member
        • Jul 2017
        • 287

        #4
        I think when I start to need a scanner to wave red flags at me pointing out that some data is showing other than what is desired on the same data page and also that I need to be looking at fuel pressure data because of a fuel pressure code that will be the day I probably need to look into applying for that Wal-Mart greeter job instead of working on cars.
        It's like "Captain Obvious Diagnostics". Every time I press that button on something weird and squirrely there's no help there.

        Comment

        • Crusty
          Senior Member
          • Dec 2007
          • 2450

          #5
          Originally posted by GypsyR
          I think when I start to need a scanner to wave red flags at me pointing out that some data is showing other than what is desired on the same data page and also that I need to be looking at fuel pressure data because of a fuel pressure code that will be the day I probably need to look into applying for that Wal-Mart greeter job instead of working on cars.
          It's like "Captain Obvious Diagnostics". Every time I press that button on something weird and squirrely there's no help there.
          Couldn't agree more.
          Desired pid =X
          Actual pid = Y
          Pretty obvious, and those kind of "desired" vs "actual" have been in lots of vehicles data lists for many years.
          Not exactly 'intelligent diagnostics" where the computer software figured out something beyond what any 1st year apprentice should be able to see.
          Any time I look into any of the "help" screens, it's never anything outstanding that common sense & logic couldn't recognize.
          Computers are as dumb as a post, zeros & ones. The kind of terminology used such as "intelligent" this or that is just marketing to the under 40 crowd who rely on the technology far too much.
          Parts store "intelligent diagnostics" says to sell an oxygen sensor for an oxygen sensor code....every time....

          Comment

          • gentz
            Senior Member
            • Jan 2010
            • 191

            #6
            Wow, great proof. Not sure it really helps..
            Diagnostic Specialist, diagnostic tool specialist. You name It I have it or have used it! MasterTech since 1998.

            Comment

            • eddie8
              Senior Member
              • Mar 2008
              • 273

              #7
              Originally posted by tech25
              how do you know its the fuel pressure sensor?? did you hook up a mechanical gauge and verify the pressure??
              Yes i did.the intelligent diagnostics pointed me in the right direction
              Edwin Hazzard
              Southeast Mobile Tech

              Comment

              • eddie8
                Senior Member
                • Mar 2008
                • 273

                #8
                Originally posted by Crusty
                Couldn't agree more.
                Desired pid =X
                Actual pid = Y
                Pretty obvious, and those kind of "desired" vs "actual" have been in lots of vehicles data lists for many years.
                Not exactly 'intelligent diagnostics" where the computer software figured out something beyond what any 1st year apprentice should be able to see.
                Any time I look into any of the "help" screens, it's never anything outstanding that common sense & logic couldn't recognize.
                Computers are as dumb as a post, zeros & ones. The kind of terminology used such as "intelligent" this or that is just marketing to the under 40 crowd who rely on the technology far too much.
                Parts store "intelligent diagnostics" says to sell an oxygen sensor for an oxygen sensor code....every time....
                The point is it does the thinking for you.
                Edwin Hazzard
                Southeast Mobile Tech

                Comment

                • eddie8
                  Senior Member
                  • Mar 2008
                  • 273

                  #9
                  Originally posted by GypsyR
                  I think when I start to need a scanner to wave red flags at me pointing out that some data is showing other than what is desired on the same data page and also that I need to be looking at fuel pressure data because of a fuel pressure code that will be the day I probably need to look into applying for that Wal-Mart greeter job instead of working on cars.
                  It's like "Captain Obvious Diagnostics". Every time I press that button on something weird and squirrely there's no help there.
                  If you think you can make a better income at Walmart...knock your self out 😉
                  Edwin Hazzard
                  Southeast Mobile Tech

                  Comment

                  • eddie8
                    Senior Member
                    • Mar 2008
                    • 273

                    #10
                    Originally posted by gentz
                    Wow, great proof. Not sure it really helps..
                    It might for some techs...especially the ones who aren't familiar with the system there working on.
                    Edwin Hazzard
                    Southeast Mobile Tech

                    Comment

                    • ToltecasChavez
                      Senior Member
                      • Apr 2011
                      • 408

                      #11
                      Not sure why they're knocking it. Lol. As technology advances, things get easier. Why is that not good enough? Not sure why, but I like that it actually makes it easier to diagnose. Also, it's not like everyone does their own work. Instead of making fun of the tech, which is everywhere and has been for a while, lets celebrate the advances.

                      Comment

                      • Crusty
                        Senior Member
                        • Dec 2007
                        • 2450

                        #12
                        Originally posted by eddie8
                        The point is it does the thinking for you.
                        What is there to "think" about-?
                        Desired =X
                        Actual =Y

                        While it may be of help for a 1st year apprentice, or a DIY guy, it sure isn't "Intelligent Diagnostics".

                        Comment

                        • Witsend
                          Banned
                          • Nov 2012
                          • 2942

                          #13
                          What is there to "think" about-?
                          Desired =X
                          Actual =Y
                          Sometimes there are just so many damn Data PIDS you need to sift through to find what you actually want. The way some manufacturers catagorize Data PIDS things for some makes are better than others makes. Like GM has some things devided into Misfire, Air Fuel , Transmission, Exhaust Gas recirculation, Evaporative Emission, etc.
                          Just be nice to go in and be able to easily customize the list in selected category to add few thing not seen in the category besides unchecking things displayed in the category list you do not wish to see.
                          I had a 2006 Ford Expedition that had a transmission with no direct, or overdrive, but no transmission codes stored yet. On my particular scanner with Ford the live data has no categories and there is probably over a hundred Data PIDS you need to sift through, just to find the relevant transmission Pids.

                          Comment

                          • Crusty
                            Senior Member
                            • Dec 2007
                            • 2450

                            #14
                            When THIS is in the vehicle....
                            ""P008A*00 | Low Pressure Fuel System Pressure * Too Low * Pending DTC."",
                            it isn't brain surgery or rocket science to look at fuel pressure pids, whatever the vehicle is or however long the pid lists are....
                            The CODE sent the OP in the direction to test, not "intelligent diagnostics"...
                            Some vehicles could have one related pid, some may have two, some may have six. Regardless, things need to be tested to verify that what the electronic modules "think" they see is actually the case.

                            Comment

                            • ToltecasChavez
                              Senior Member
                              • Apr 2011
                              • 408

                              #15
                              The name should be made fun of. It's like the Genius Bar at apple stores. But to knock down the tech that's already there just because it makes life easier for most mechanics? Come on, don't do that. Makes people sound like snobs. "After my 1st year, I can diagnose a car by just sticking the oil up my arse and know the exact problem". Just don't. DO NOT.

                              Comment

                              Working...