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1984 Marquis Gentleman I'm trying to do an engine swap from a 1988 Towncar 5.0 efi

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    #1

    1984 Marquis Gentleman I'm trying to do an engine swap from a 1988 Towncar 5.0 efi

    1984 Marquis

    Gentleman I'm trying to do an engine swap from a 1988 Towncar 5.0 efi to a 1984 Mercury Grand Marquis. The donar vehicle is complete.I install it already crank but doest fire up.I have power to coil and ecu and fuel relays with ignition 12 volt from key due to some splices.But fuel pump not turning on and inertia switch has no power in the back.The injectors have 12 volt but no pulse.Any ideas please and thank you.
    ​
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    #2
    ECA relay not turning on (hot in key on and start). This supplies power to all the other relays and sensors.

    Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
    rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

    Originally posted by gadget73
    ... and it should all work like magic and unicorns and stuff.

    Originally posted by dmccaig
    Overhead, some poor bastards are flying in airplanes.

    Comment

      #3
      I eca relay i get 12 volt hot at all times and 12 volt with key maybe not getting a signal coming out to computer But i do hear it click with key on and off.

      Comment

        #4
        ECM ground come loose at the battery negative terminal?

        Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
        rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

        Originally posted by gadget73
        ... and it should all work like magic and unicorns and stuff.

        Originally posted by dmccaig
        Overhead, some poor bastards are flying in airplanes.

        Comment

          #5
          Wonder if ECM's are grounded through their cases or you can just plug in the connector and let them hang by the firewall - just for testing purposes, of course?
          What I Own: 1993 Mercury Grand Marquis GS
          What I Help Maintain: 1996 CV / 1988 CV / 1988 Tempo

          Comment

            #6
            they ground through the wiring. Several grounds actually, one right to the battery, another to the engine block, and at least one more goes to a screw next to the ECM.
            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

            Comment

              #7
              Yes double checked all my ground even opend up my harness to double checked .Everything tight on good ground.No injectors pulse maybe a bad computer ?

              Comment

                #8
                Doesn't the ignition module have a wire for start power separate from the normal power wire? Is that one getting power during crank?

                Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
                rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

                Originally posted by gadget73
                ... and it should all work like magic and unicorns and stuff.

                Originally posted by dmccaig
                Overhead, some poor bastards are flying in airplanes.

                Comment

                  #9
                  Yes there a crank wire and a start wire that are connected #3 and #4
                  1 Photo

                  Comment

                    #10
                    Might try triggering the starter solenoid on the fender (battery lug to small lug) with the key in the on position and see if that works. If it does start, then it means the crack wire isn't getting power on the ignition module.

                    Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
                    rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

                    Originally posted by gadget73
                    ... and it should all work like magic and unicorns and stuff.

                    Originally posted by dmccaig
                    Overhead, some poor bastards are flying in airplanes.

                    Comment

                      #11
                      Can this no power or pule happen if a neutral switch is not connected?

                      Comment

                        #12
                        No, but it may not go into self-test mode if thats not connected properly.

                        The ignition system doesn't actually need the ECM to make spark. The only thing the computer does is provide spark advance. If its got power, it'll fire the coil.
                        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

                        Comment

                          #13
                          I do see what you are saying about the non cumputer need it but I have a random EFI distributor here, so I hooked it up to the harness plug, grounded it to engine, and spun it by hand. Bam!....lots of clicking(injectors) and lots of flashes(noid).But when i place in back in engine no pulse on injector or pulse on coil smh any help please and thank you

                          Comment

                            #14
                            Is the distributor turning with the engine? (cap off and just see if it turns while cranking)

                            Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
                            rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

                            Originally posted by gadget73
                            ... and it should all work like magic and unicorns and stuff.

                            Originally posted by dmccaig
                            Overhead, some poor bastards are flying in airplanes.

                            Comment

                              #15
                              Yes turns with engine gears are in good shape

                              Comment

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