Announcement

Collapse
No announcement yet.

87 TC 5.0 running rough

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    87 TC 5.0 running rough

    I've been working on this thing for quite awhile now. I finally got it to run but now it has a stammer when accerlerating. It's kind of hard to describe. It idles smooth but when the throttle is pressed the motor vibrates. It's not a loose motor mount I know for sure and it does this hot or cold. Here is a list done to it so far.

    New PIP
    New TPS
    New MAP
    NEW plugs and wires
    New ignition module
    New coil
    Timing set

    I'm at a loss here. I was thinking maybe a bad O2 sensor causing on side to running different then the other?? I'm not sure it works like that. Any ideas?

    Jeremy
    Tags: None
    #2
    Does it do it in neutral?

    Comment

      #3
      Oh good question. I do believe it does. It don't really get worse. basically stays the same even when accelerating. Just a little more pronounced I guess.

      Comment

        #4
        Make sure, cause we might be looking at possible transmission problems.

        Comment

          #5
          It does this in neutral as well.

          Comment

            #6
            ever run a code scan, particularly a cylinder balance test? Also, have you verified that the firing order is correct? I've seen cases where someone mixed up a plug wire and it runs basically ok at idle, but has a distinct miss and vibration at above-idle speeds.
            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
              I'd triple-check the firing order on the cap.


              Counterclockwise.
              sigpic


              - 1990 Ford LTD Crown Victoria P72 - the street boat - 5.0 liter EFI - Ported HO intake/TB, 90 TC shroud/overflow, Aero airbox/zip tube, Cobra camshaft, 19lb injectors, dual exhaust w/ Magnaflows, Cat/Smog & AC delete, 3G alternator, MOOG chassis parts & KYB cop shocks, 215/70r/15s on 95-97 Merc rims

              - 2007 Ford Escape XLT - soccer mom lifted station wagon - 3.0 Duratec, auto, rear converter delete w/ Magnaflow dual exhaust

              - 2008 Mercury Grand Marquis Ultimate Edition - Daily driver - 4.6 2 valve Mod motor, 4R75E, 2.73s. Bone stock

              Comment

                #8
                15426378

                ALSO! Verify that cylinder #1's spark plug wire is on the '1' marked on the distributor cap! They do weird things if it's not right.

                Comment

                  #9
                  Haven't run codes on this yet. I was fighting yhis dam car last year before it got too cold out. Al I got then was a TPS low output and thermactor code. Last year I couldn't even get it to run more then a few seconds. Then just a few days ago I tried firing it up after it sitting since last november and it fired and ran. The dam thing is a mystery to me right now. We did work heavily in the distributor area. We fought timing as my dad decided to pull the distributor and jacked up the timing. I will double check the firing order. Thanks

                  jeremy

                  Comment

                  Previous template Next
                  Working...
                  X