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    #1

    '85 Grand Marquis will not start...

    ...but it really, really wants to! I just bought a 1985 GM from my co-worker. It has 36,600 original miles and has been in his family since 1987, so I know the miles are right. His mother-in-law owned it, and drove the car very seldom - maybe five miles a week! She passed away and left the Merc to him. He drove the car from where his m-i-l lived to his home. It started right up and drove fine. After sitting for nearly four months, though, it refuses to start, even with a jumper battery hooked up. It acts like it wants to start but will not. I've checked the fuses, and hit the fuel reset button next to the trunk hinge, and can't see anything amiss. Yes, it has fuel in the tank. Everything else electrical appears to be working. I've heard the car run before and it sounded great. It needed a jump then, but it ran just fine. It did not exhibit these signs before.

    Any ideas???
    1986 Ford Country Squire LX 8-pass wagon 5.0L AOD
    Tags: None
    #2
    Old gas???


    "Hope and dignity are two things NO ONE can take away from you - you have to relinquish them on your own" Miamibob

    "NEVER trade your passion for glory"!! Sal "the Bard" (Dear Old Dad!)

    "Cars are for driving - PERIOD! I DON'T TEXT, TWEET OR TWERK!!!!"

    Comment

      #3
      Soo when you say it wants to start do you me it cranks or turns over but does not start?

      Comment

        #4
        Gas is four months old. It cranks to the point where it wants to fire off, but doesn't fire off.
        Last edited by patrick66; 04-15-2014, 07:10 PM.
        1986 Ford Country Squire LX 8-pass wagon 5.0L AOD

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          #5
          Coil going bad.. Or coil wire.. Check that out


          Sent from my iPhone using Tapatalk

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            #6
            Fuel Pump Relay?
            -Nick M.
            Columbia, SC

            66 Squire, 89 Colony Park, 90 TC, 03 TC, 06 TC, 07 TC (2x)
            03 BMW 540iT, 07 Toyota Tundra SR5 Dbl Cab/5.7 2WD

            Comment

              #7
              change the fuel filter. if there's been condensation in the tank and water build up, it might have clogged the filter with water (it's a water trap). Happened to my dad and his F150. Changed the filter and it's all good.

              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

                #8
                Spark and fuel. If the engine cranks over, these two are very important. Do you hear the fuel pump buzz, after turning the key to the "run" position? Do have spark, when cranking the engine?

                1981 Mercury Marquis Brougham 2-Door 302/ 5-speed -special blend (GMGT)
                1987 Lincoln Mark VII 5-speed (Errand runner)
                1989 Mercury Grand Marquis (Base Runner)
                2007 Lincoln Town Car Signature Limited (Hustlyn)
                2011 Ford Crown Victoria Police Interceptor (Down with O.P.P)

                Comment

                  #9
                  Originally posted by marquisman View Post
                  Spark and fuel. If the engine cranks over, these two are very important. Do you hear the fuel pump buzz, after turning the key to the "run" position? Do have spark, when cranking the engine?
                  This. See if you have spark at the spark plugs. If so, try spraying some starting fluid in the intake and see if it starts to kick over.. if so it will hopefully just be fuel related.

                  I can't remember if there's a test port on the fuel rail off the top of my head. (I feel like there has to be.) I did find this pic.


                  Try seeing if you get a fuel spray there to verify fuel pressure.

                  Someone feel free to correct me if I'm having a brain fart.
                  Last edited by slack; 04-16-2014, 01:37 AM.

                  '78 LTD | '87 Grand Marquis | '89 Crown Vic (RIP) | '91 Grand Marquis (RIP) | '94 Town Car (RIP) | '97 Town Car (RIP)

                  Comment

                    #10
                    Isn't 85 CFI? I think that fuel rail would be for SEFI. I'm not familiar with CFI so I'm not sure if it's set up the same way and if it has a schrader valve for testing fuel pressure like the SEFI has (red arrow in the pic).
                    Last edited by VicCrownVic; 04-16-2014, 09:41 AM.
                    Vic

                    ~ 1989 MGM LS Colony Park - Large Marge
                    ~ 1998 MGM LS - new DD
                    ~ 1991 MGM LS "The Scab"
                    ~ 1991 MGM GS "The Ice Car"

                    Comment

                      #11
                      Yes CFI has a pressure test port.

                      Sent from my '85 Lincolin Town Car
                      Using Tapatalk

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                        #12
                        I was able to get the car to start, by holding the gas pedal to the floor. It'll start, then immediately quit. It'll also do the same with an ether shot. So, very little to no fuel.

                        Where is the test port on an '85 5.0L???
                        1986 Ford Country Squire LX 8-pass wagon 5.0L AOD

                        Comment

                          #13
                          its on the CFI unit. I think you have to remove the air cleaner lid and it lives inside. Look for the thing that looks like a tire valve stem and thats your port.
                          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

                            #14
                            Cool, I'll check that in the morning.
                            1986 Ford Country Squire LX 8-pass wagon 5.0L AOD

                            Comment

                              #15
                              Originally posted by gadget73 View Post
                              Look for the thing that looks like a tire valve stem and thats your port.
                              Might have a gray cap on it that unscrews to get to the valve.
                              Last edited by Louis; 04-17-2014, 01:00 AM.

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