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Hesitation on full acceleration on sefi?

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    Hesitation on full acceleration on sefi?

    I full throttle and it take like two seconds till the car notices it? I have a fresh tune up new map sensor, new fuel pump, injectors cleaned out, lots of new vacuum lines. So what can this be?
    sigpic
    1986 Crown Victoria 302 Cold Air,Mac Shorty headers, Full Dual Exhaust with Super Forty Flows, Wagon Suspension with a Full Sound System Replacement 1/4 time 17.486 @ 77.43mph

    #2
    how old is the fuel filter? Ever checked it for codes? A TPS with a dead spot can cause this too, may or may not show up on a code scan.
    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


      #3
      tps is new and tuned fuel filter two years old maybe. I know still have to redo the film sensor could that be it.
      sigpic
      1986 Crown Victoria 302 Cold Air,Mac Shorty headers, Full Dual Exhaust with Super Forty Flows, Wagon Suspension with a Full Sound System Replacement 1/4 time 17.486 @ 77.43mph

      Comment


        #4
        Change the fuel filter first, its about an annual thing.


        whats a film sensor?
        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


          #5
          the key shaped thing at bottom of distributor lol
          sigpic
          1986 Crown Victoria 302 Cold Air,Mac Shorty headers, Full Dual Exhaust with Super Forty Flows, Wagon Suspension with a Full Sound System Replacement 1/4 time 17.486 @ 77.43mph

          Comment


            #6
            Originally posted by gadget73 View Post
            Change the fuel filter first, its about an annual thing.


            whats a film sensor?
            Annually? Must have dirty gas where you are at. Mine hasnt been changed in at least 10 yrs. I have one but havent felt the need to change it.

            2011 Grand Marquis LS Ultimate Edition
            Dual Exhaust w/ AP XLerator mufflers and 3 1/2" tips, Eibach 1" rear sway bar, Pioneer Head unit and speakers, 17X8 Drag DR-72 wheels

            RIP 1984 2Dr Crown Vic "The Millennium Falcon"
            Carbed 5.0 HO w/nitrous , Performer RPM intake, GT40P heads, E303 cam, FRP Shorties, FRP 9mm plug wires, Off-Road H-pipe, Magnaflow round mufflers, 2000 rpm stall
            NA-15.78@91.21, 80hp shot-14.48@96.21

            Comment


              #7
              the only parts in the distributor are the pickup, or bolted to it there is a TFI module. There is no film sensor.



              If you look at the factory service intervals, I'm pretty sure it has fuel filter replacement at 12,000 miles or 12 months.
              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


                #8
                iirc the FF is 2/24 interval

                can you measure fuel psi?

                what is your timing set at?

                Comment


                  #9
                  how would i go about measuring fuel psi put a gauge on it right lol. I havent checked timing yet either. Idk I gave it to ford they said tfi module was bad and just pulled the spout to solve the problem of it stalling. I putting new tfi module on this week. Maybe that will fix it.
                  sigpic
                  1986 Crown Victoria 302 Cold Air,Mac Shorty headers, Full Dual Exhaust with Super Forty Flows, Wagon Suspension with a Full Sound System Replacement 1/4 time 17.486 @ 77.43mph

                  Comment


                    #10
                    theres a test port for a fuel pressure gauge on the front passenger side corner of the fuel rail. It looks like a valve stem you'd find on a tire. There may be a black plastic cap on it.
                    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


                      #11
                      Originally posted by gadget73 View Post
                      the only parts in the distributor are the pickup, or bolted to it there is a TFI module. There is no film sensor.
                      TFI=Thick Film Integrated ignition module=film sensor
                      Originally posted by gadget73
                      There is nothing more permanent than a temporary fix.
                      91 Mercury CP, Lopo 302, AOD, 3.08LSD. 3g upgrade, Moog wagon coils up front, cc819s in the back. KYB GR-2 police shocks. Energy suspension control arm bushings. Smog deleted.
                      93 F-150 XLT, 302, ZF 5-spd from 1-ton, 4wd.
                      Daily--07 Civic Coupe. Bone stock with 25k miles
                      Wife--14 Subaru Outback. 6-speed.
                      95 Subaru Legacy Wagon--red--STOLEN 1/6/13

                      Comment


                        #12
                        Yes, I know what TFI stands for. I didn't know if he meant the pickup which is a sensor, or the TFI module, which is not a sensor. Neither item is quite what I'd call key shaped, so its still not clear.
                        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

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