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    #1

    code scanner questions

    Yesterday At school we learned how to hook up code scanners I was using a scan tool code scanner I was trying find info like trans temp coolent temp spark adv airlow temp but could not find it. When I asked my teacher why I could find that info for my car he said that ford made it that way so you could not find out what the computer is reading. he also said for did not want people to find out. is that true? I admit I was a little pissed that my car did not give me that info.
    on the other hand it did give me a code 12 and 94 which is good to know because it is the isc air by pass solenoid which I first thought is was.

    1989 mercury grand marquis gs / 2014 ford focus s daily driver
    302 lopo with ho upper/ aod with trans go shift kit
    k code 3:55 posi rear/big brake swap tow package car
    Tags: None
    #2
    EEC-IV does not support real time information like that Gabe. Can only spit codes out.

    You need an ODB controlled car and a good scanner to get that info.
    Builder/Owner of Badass Panther Wagons

    Busy maintaining a fleet of Fords

    Comment

      #3
      That makes sense than I guess that's just the way ford designed eec-Iv

      1989 mercury grand marquis gs / 2014 ford focus s daily driver
      302 lopo with ho upper/ aod with trans go shift kit
      k code 3:55 posi rear/big brake swap tow package car

      Comment

        #4
        Limited processor and sensor input. Consider the EEC IV system went into production use in 1984, and remember the computer technology around at the time. Compared to a modern electronic engine control system, our EFI is run from a pocket calculator.
        86 Lincoln Town Car (Galactica).
        5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

        91 Lincoln Mark VII LSC grandpa spec white and cranberry

        1984 Lincoln Continental TurboDiesel - rolls coal

        Originally posted by phayzer5
        I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

        Everything looks like voodoo if you don't understand how it works

        Comment

          #5
          So what exactly then does my ecm and obd 1 control/ monitor on the 351w w/ a 2bbl Holley? Very curious.


          1991 Crown Victoria LTD, Puff the Magik Dragon

          Comment

            #6
            that's still EEC-III or EEC-IV. I don't think it's OBD.

            And it doesn't do much at all. The old VV had slight computer control. IT IIRC, the EEC took care of the timing and some of the fuel management on the VV itself.
            Builder/Owner of Badass Panther Wagons

            Busy maintaining a fleet of Fords

            Comment

              #7
              Actually I think the VV is something more like EEC II. The grand total of its function according to fordfuelinjection.com is this:

              EEC-II
              *1979
              *Carb (O2 feedback and fuel stepper motor), Ignition timing, EGR, and Smog pump

              I have seen EEC IV carb engines though, so who knows. Even with the VV in place it wouldn't have done a whole lot, but with a 2bbl carb it really doesn't do anything now. Maybe it operates the smog pump valves and EGR but thats really it. Your ignition is probably duraspark, so I doubt very much it affects timing.
              86 Lincoln Town Car (Galactica).
              5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

              91 Lincoln Mark VII LSC grandpa spec white and cranberry

              1984 Lincoln Continental TurboDiesel - rolls coal

              Originally posted by phayzer5
              I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

              Everything looks like voodoo if you don't understand how it works

              Comment

                #8
                Got a little duraspark box. Pretty sure I have obd1 cause Ive had codes pulled, but I could be wrong.


                1991 Crown Victoria LTD, Puff the Magik Dragon

                Comment

                  #9
                  Hard to remember

                  Originally posted by gadget73
                  Limited processor and sensor input. Consider the EEC IV system went into production use in 1984, and remember the computer technology around at the time. Compared to a modern electronic engine control system, our EFI is run from a pocket calculator.
                  Exactly. This was rocket science when:
                  - IBM PC was only 3 years old. No hard disk (!)
                  - DOS was all we had. Windows was still a dream.
                  - Mouse? What's a mouse?
                  - Bill Gates still had pimples, and was not even a millionaire
                  Rob the Aussie
                  Photos
                  Founding (and only) member of the CLIPPer Club.
                  (Continuous Lincoln ImProvement Program).

                  Car: '86 Lincoln Town Car
                  Engine: 302 Windsor

                  Comment

                    #10
                    Originally posted by 91 LTD
                    So what exactly then does my ecm and obd 1 control/ monitor on the 351w w/ a 2bbl Holley? Very curious.
                    351 VV cars are controled by a system called MCU (Microprocessor Control Unit). this system controls very basic air/fuel and emissions equipment, which includes 02 sensor, throttle kicker actuator and solenoid, feedback carb motor, knock sensor, cansiter purge valve, tab/tad solenoids and tach input at the coil.

                    the system is considered to be OBD I and was used up to 1991 on 5.8L passenger car applications with VV carb.
                    2003 Town Car Signature - 3.27 RAR, Dual exhaust and J-mod - SOLD 9/2011
                    89 Crown Victoria LX HPP -- SOLD 9/2010
                    88 Grand Marquis LS - The Original -- Totaled 5/2006

                    I rebuild AOD/AODE/4R70W/4R75E transmissions....Check out my Facebook page: https://www.facebook.com/pages/North...48414635312478

                    Comment

                      #11
                      Proper. Thanks for the answer 88'. Gonna whip out the shop manual and do some learnin' now bout all them parts you mentioned. How would havin a 2bbl Holley and not VV affect things?


                      1991 Crown Victoria LTD, Puff the Magik Dragon

                      Comment

                        #12
                        The feedback system in the carb would no longer work, so the O2 sensor really wouldn't do anything. Not sure if you still have the high idle motor, but if its gone, then that system no longer works. Probably at this point all it does is work the canister purge valve and the tab/tad for the smog pump.
                        86 Lincoln Town Car (Galactica).
                        5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

                        91 Lincoln Mark VII LSC grandpa spec white and cranberry

                        1984 Lincoln Continental TurboDiesel - rolls coal

                        Originally posted by phayzer5
                        I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

                        Everything looks like voodoo if you don't understand how it works

                        Comment

                          #13
                          What is monitored in terms of "codes"? Am considering getting a code puller but only if it'll provide some useful info.


                          1991 Crown Victoria LTD, Puff the Magik Dragon

                          Comment

                            #14
                            On your car? not much, especially with the removal of the VV. Actually I'm not 100% sure an MCU even has a diagnostic connector. Probably all you'd get out of the system in working order would be error codes for vss, oxygen sensor, egr position, thermactor control, possibly idle speed and ignition signal. Probably there are codes for the carb functions too, but since you arent running the stock carb, those will probably always be set.
                            86 Lincoln Town Car (Galactica).
                            5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

                            91 Lincoln Mark VII LSC grandpa spec white and cranberry

                            1984 Lincoln Continental TurboDiesel - rolls coal

                            Originally posted by phayzer5
                            I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

                            Everything looks like voodoo if you don't understand how it works

                            Comment

                              #15
                              Thought so. Thanks.


                              1991 Crown Victoria LTD, Puff the Magik Dragon

                              Comment

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