Announcement

Collapse
No announcement yet.

302 Windsor + AOD (1986) - lugging under light load

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

    302 Windsor + AOD (1986) - lugging under light load

    Has anyone seen this before? If so where should I start looking.

    CAR
    1986 Lincoln Town Car, 302 Windsor. EFI, AOD

    SYMPTOMS
    The car feels like it missing under light load

    Idle = smooth as silk
    Accelerate = Smooth.
    65 mph = smooth

    35~40 mph: Drive along flat road at a steady 35~40 mph - and accelerate a little (eg up a rise) and she misses a little.

    Have replaced these (with new) so far
    - coil
    - plug leads
    - plugs

    Distributor rotor etc looks fine.
    Rob the Aussie
    Photos
    Founding (and only) member of the CLIPPer Club.
    (Continuous Lincoln ImProvement Program).

    Car: '86 Lincoln Town Car
    Engine: 302 Windsor
    Tags: None
    #2
    My suggestion, would be to drive in "D" and not "OD" up to about 50-55 mph...

    It sounds like it is lugging in OD...
    1983 Grand Marquis 2Dr Sedan "Mercules"
    Tremec TKO conversion, hydraulic clutch, HURST equipped!

    Comment

      #3
      +1, maybe adjust the kickdown?
      2000 Grand Marquis LS
      2000 F150 XLT 6 inches of lift.
      1987 Bill Blass Mark VII - Sold
      1985 Mercury Grand Marquis Colony Park- SOLD. to a little old lady
      Mercury Owners Group member
      Save The Whales, Restore an Old Station Wagon!!

      Comment

        #4
        More than likely its the plug wires, at least thats my experience in the past.

        you should also check the ECM for stored trouble codes and check for vacuum leaks.
        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

          #5
          I had a similar issue when my throttle position sensor was not calibrated properly. With the engine off and the key on, the (green wire I believe) should measure as close as possible to 1.0 Volt. Mine was set to something like .80 Volts and it would cause a bucking or shudder at the speed you mention.

          I drove the car in "D" only, not "OD" unless I was on the highway. So as mentioned in a previous post, see if the problem goes away by driving the car in "D" only.

          You will not hurt anything by using keeping it out of "OD".

          ~Adam

          '85 2-Door Crown Victoria
          302 HO, -0.022" E7 Heads, Weiand Dual Plane Intake, Edelbrock 1406 Carb, Mechanical Fuel Pump, HEI Distributor, 180* T-stat, Transgo Shift Kit, HO Governor, Lokar TV/Throttle Cable Setup, B&M Torq Master 2000 RPM Stall Converter, FRPP Trans Cooler, Mustang Shorty Headers, 2.25" Dual Exhaust, Flowtech H-pipe (no converters), Hooker AeroChamber Mufflers, Side-exit Exhaust w/ Chromed 2.5" Tips, '02 PI F/R Shocks, Cut 2004 PI Front Springs in the Rear, PI Rear Sway Bar, 17" SAP Wheels, 245/50/Z17 Michelin Pilot A/S Tires, Cold A/C, Cruise Control, 4.10 Rear End Gears, Trac Lok Diff.
          '04 Crown Victoria LX Sport, '02 Jeep Liberty
          '83 Suzuki GS 1100E Motorcycle[/color]

          Comment

            #6
            Im having the same problem only it happens when its mid throttle, Full or light throttle its fine
            The Terror Of The Streets
            http://www.cardomain.com/ride/2299944

            Comment

              #7
              sounds familiar, i just mash the gas so it downshifts and does about 20mph faster, lol
              jay--1983 towncar, 302v8 cfi, dual straight pipes w/resonators ,edelbrock motor goodies, custom interior, full custom stereo system, full rebuilt trunk audio setup, custom paint...more to come......

              Comment

                #8
                That doesn't really fix the problem though .

                '85 2-Door Crown Victoria
                302 HO, -0.022" E7 Heads, Weiand Dual Plane Intake, Edelbrock 1406 Carb, Mechanical Fuel Pump, HEI Distributor, 180* T-stat, Transgo Shift Kit, HO Governor, Lokar TV/Throttle Cable Setup, B&M Torq Master 2000 RPM Stall Converter, FRPP Trans Cooler, Mustang Shorty Headers, 2.25" Dual Exhaust, Flowtech H-pipe (no converters), Hooker AeroChamber Mufflers, Side-exit Exhaust w/ Chromed 2.5" Tips, '02 PI F/R Shocks, Cut 2004 PI Front Springs in the Rear, PI Rear Sway Bar, 17" SAP Wheels, 245/50/Z17 Michelin Pilot A/S Tires, Cold A/C, Cruise Control, 4.10 Rear End Gears, Trac Lok Diff.
                '04 Crown Victoria LX Sport, '02 Jeep Liberty
                '83 Suzuki GS 1100E Motorcycle[/color]

                Comment

                  #9
                  old injectors will do that, and will be smooth in all other ranges of rpm/power and speed.
                  1989 Lincoln Town Car - "Anabelle" - Original block, .030 over with SpeedPro pistons, rods fitted with ARP hardware, FRPP +volume oil pump, GT-40 3bar heads, Crane 1.72 rockers, 89' Fox cam, 93' Cobra lower intake, Explorer upper and 65mm TB, 93' Lightning EGR spacer, K&N intake kit from a 4.0L Ranger, 19lb/hr injectors w/ 87 Mark VII ECM, cat/smog deletes, Big Brake conversion, 3.55 K-Code Trac-Lok/Disc brake rear axle, CVPI LCA's w/1" sway bar in rear, wagon front sway bar, BBK 2.5" off-road H-Pipe, Flowmaster super 40s, HPP wheels, 3G alternator w/LMR.com wiring kit, gear reduction starter conversion, Best 1/4 time: 16.0 @ 85mph.

                  Comment

                    #10
                    mine are original, kinda figured they were hurtin, lol
                    jay--1983 towncar, 302v8 cfi, dual straight pipes w/resonators ,edelbrock motor goodies, custom interior, full custom stereo system, full rebuilt trunk audio setup, custom paint...more to come......

                    Comment

                      #11
                      Bad TPS sensor can also cause that, as can a clogged fuel filter. I'd check the TPS setting and change out the filter to see if that helps. My second guess would be plug wires, but if you've changed them and it didn't help, I guess thats not 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

                      Previous template Next
                      Working...
                      X