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1997 CVPI 4.6 Broken Crank

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    1997 CVPI 4.6 Broken Crank

    My 1997 CVPI will not start and when I try to crank it the starter just spins. I think the crank is broken because the flywheel spins when the starter turns. Has anyone else had this problem?
    Thanks,
    Spencer
    1963 Oldsmobile Dynamic 88 Holiday
    1964 Chrysler Newport
    1986 Ford LTD Crown Victoria LX
    1997 Ford Crown Victoria Police Interceptor
    sigpic

    #2
    fuel filter
    fuel pump
    fuses and relays
    ignition coils
    spark plugs
    spark plug wires


    does the fuel pump whirr when you put the ignition to "ON" ?

    i just dealt with this today. ill try and help as much as i can, mang.
    08 Lincoln Navigator L - 233k
    03 Mercury Marauder- 63k
    97 Ford Crown Victoria HPP "Tank of Justice III" (TOJ3) - 194k -->578.9 miles on ONE tank of gas<--
    94 BMW 325i Convertible - 135k
    73 VW Super Beetle "Bunky" <----- Wifey's
    12 Mini Cooper S - 90k <---- Wifey's
    Originally posted by pantera77
    Well my buddy tells him he knows exactly who loves buying shitboxes.

    Comment


      #3
      do the pulleys on the front of the engine spin? if so, you don't have broken crank, some other issue, i'v also seen the flywheel bolts sheer off, had a shop replace transmission and messed up flywheel bolts and it just spun on torque convertor. look at the pulleys.
      1996 Grand Marquis White, 288,600 miles as of 4-3-09
      4.6L cvpi engine and pcm, Dual Exhaust, Blue Leather Interior, Keyless Entry and Remote Start, DOT Strobes, LED Front Marker Lights, Running 93 Octain Fuel.

      Comment


        #4
        No, the pulleys do not turn, but I had somebody look while I tried to start it and the starter is turning the flywheel. Since the flywheel turns and the pulleys do not, it has to be the crank I believe. Fuel pump, etc. all come on like normal.

        Thanks for your help,
        Spencer
        1963 Oldsmobile Dynamic 88 Holiday
        1964 Chrysler Newport
        1986 Ford LTD Crown Victoria LX
        1997 Ford Crown Victoria Police Interceptor
        sigpic

        Comment


          #5
          Is a broken crank on a stock engine even a possibility? Barring an amazingly-unforeseen manufacturing defect, that is.
          2012 Mazda5 Touring | Finally working on the LTD again!

          Comment


            #6
            Originally posted by 1987cp View Post
            Is a broken crank on a stock engine even a possibility? Barring an amazingly-unforeseen manufacturing defect, that is.
            +1
            08 Lincoln Navigator L - 233k
            03 Mercury Marauder- 63k
            97 Ford Crown Victoria HPP "Tank of Justice III" (TOJ3) - 194k -->578.9 miles on ONE tank of gas<--
            94 BMW 325i Convertible - 135k
            73 VW Super Beetle "Bunky" <----- Wifey's
            12 Mini Cooper S - 90k <---- Wifey's
            Originally posted by pantera77
            Well my buddy tells him he knows exactly who loves buying shitboxes.

            Comment


              #7
              I HIGHLY doubt the crank has snapped. Hell, you'da really known when you shut it off last.
              Chris - A 20th Century Man \m/ ^.^ \m/

              Comment


                #8
                Hi

                More likely the torque convertor flex plate has fractured.

                Regards

                Dereck
                President and founder of The Turbine Wheel Appreciation Society and Little Debbie Cake Connoissuer

                Also "The Pondside Pain In Your Posterior"

                Comment


                  #9
                  i'm gonna go with dereck on this one

                  1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
                  2006 Lincoln Town Car Signature. Stock for now
                  1989 Ford F-250 4x4 much much more to come, sefi converted so far.
                  1986 Toyota pickup with LSC wheels and 225/60/16 tires.
                  2008 Hyundai Elantra future Revcon toad
                  1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)

                  please be patient, rebuilding an empire!

                  Comment


                    #10
                    I've seen it, not on a Panther, but on a dodge truck with a Cummins. If the crankshaft itself broke, you'd know it.

                    I'd also like to say, breaking the flexplate is something you are going to notice too. Did you hear or feel anything? I only ask this, because in either case, crank or flexplate, your car is gonna stop moving. So I'm wondering what were the events leading UP TO the starter just spinning the flexplate.
                    Last edited by grandpaslincoln; 04-09-2009, 10:59 PM.
                    Pebbles-1968 Ford F250
                    Pile of Junk! An Electronics Project Site (To get wet by)<---Clicky! NEW STUFF!!!!

                    Comment


                      #11
                      Originally posted by Grandpaslincoln View Post
                      I've seen it, not on a Panther, but on a dodge truck with a Cummins. If the crankshaft itself broke, you'd know it.

                      I'd also like to say, breaking the flexplate is something you are going to notice too. Did you hear or feel anything? I only ask this, because in either case, crank or flexplate, your car is gonna stop moving. So I'm wondering what were the events leading UP TO the starter just spinning the flexplate.
                      I bought it off a towing company like this lol for 400 bucks. The owners didn't pay their tow bill. So I have never heard it run. I'm swapping the motor anyway so I guess I'll tear down the old one and see what's up with it.
                      Last edited by bluebeast86; 04-10-2009, 01:12 AM.
                      1963 Oldsmobile Dynamic 88 Holiday
                      1964 Chrysler Newport
                      1986 Ford LTD Crown Victoria LX
                      1997 Ford Crown Victoria Police Interceptor
                      sigpic

                      Comment


                        #12
                        Ah okay that makes more sense then. Flexplate is the most likely thing, the material is fairly thin, so under the right circumstances like metal fatigue or extreme abuse they can break. That's what happened with that Cummins, one of the guys I worked with let his GF drive it and she must really been beating on it, because it tore the center right out of that flexplate. As for breaking a crank, there's really not much you can do to break one, unless it had defects from the beginning. Not sure if a broken or missing harmonic balancer on a 4.6 would break the crankshaft, it might. Guess you'll find out lol

                        $400 for a 97 is a hell of deal too!
                        Last edited by grandpaslincoln; 04-10-2009, 03:13 AM.
                        Pebbles-1968 Ford F250
                        Pile of Junk! An Electronics Project Site (To get wet by)<---Clicky! NEW STUFF!!!!

                        Comment


                          #13
                          Wow what mess mang I use to have a 97 CV LX if a torque coverter try changing the tranny fluid also sometimes that will fix the problem but if a crank then from what I hear 4.6 are not rebuildable un like the older Ford motors that are ??????
                          2000 Crown Vic LX HPP Red w/3:55 Rears
                          85 Crown Vic Stock w/HPP`s
                          07 JCL 250 A Scooter
                          79 to 91 Mercedes S Class W126 US or Euro Versions coming soon

                          Comment


                            #14
                            Define "not rebuildable". Lots of people have rebuilt Modular engines, especially those with performance and racing goals in mind. Timing cover fitment is supposed to be a pain in the butt if head milling is required, though.
                            2012 Mazda5 Touring | Finally working on the LTD again!

                            Comment


                              #15
                              Originally posted by Grandpaslincoln View Post
                              Ah okay that makes more sense then. Flexplate is the most likely thing, the material is fairly thin, so under the right circumstances like metal fatigue or extreme abuse they can break. That's what happened with that Cummins, one of the guys I worked with let his GF drive it and she must really been beating on it, because it tore the center right out of that flexplate. As for breaking a crank, there's really not much you can do to break one, unless it had defects from the beginning. Not sure if a broken or missing harmonic balancer on a 4.6 would break the crankshaft, it might. Guess you'll find out lol

                              $400 for a 97 is a hell of deal too!

                              I'm starting to wonder if it was a good deal lol. A couple weeks after I bought that there was a '99 P71 that ran and the tranny was good and was in pretty good shape for $400 on Craigslist, the only thing wrongh with it was bad rearend.

                              Also, I do not believe the flexplate is broken because it is still in position perfectly like it's supposed to be. If it were broken, would it not be loose?
                              Last edited by bluebeast86; 04-16-2009, 07:47 PM.
                              1963 Oldsmobile Dynamic 88 Holiday
                              1964 Chrysler Newport
                              1986 Ford LTD Crown Victoria LX
                              1997 Ford Crown Victoria Police Interceptor
                              sigpic

                              Comment

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