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Thread: My 79 Marquis

  1. #101
    Member Grand1's Avatar
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    Quote Originally Posted by WagonMan View Post
    Here is a tip for anybody removing/replacing a gas gauge sending unit. Use a MOPAR gasket part# 03404451 instead of the Ford gasket. The MOPAR gasket is wide and flat and fits inside the ridge where the sending unit sits in. The sending units are made from the same manufacturer for many U.S. built cars. Even the lock rings interchange. Nothing is harder than trying to hold that skinny o-ring in a vertical position and getting it positioned properly. You can buy the MOPAR gasket at any Jeep or Dodge dealer and they come one to a package! WagonMan

    Hey WagonMan, do you have a year, make, and model for that gasket seal? Like a 1962 Fury? I called two parts dealerships and both are coming up empty on that part number. There are some online options with that part number (like Amazon for over $80, lol or ebay with a long ship time).... maybee it changed?

    Edit: both dealerships "catalogs " only go back to 1982. Never understood that, while technology can save about anything, at minimal cost. Both places didnt even give a shit.I was a part specialist for a Uhaul regional repair center in Virginia and held myself to a higher standard than that, even on Monday mornings.
    Last edited by Grand1; 06-14-2021 at 11:36 AM.



    1978 Grand Marquis 460 2door "Blue Bomber"

    1987 LTD Crown Vic 351w aka the "MI Mountie"

    1989 Colony Park ....Marge still lives!

    1979 Marquis creamy goodness

  2. #102
    GMN Regular WagonMan's Avatar
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    Here is a pic of the package. I thought the "1" in front of the # meant one piece. Maybe it is part of the part#. As far as application, I use any Mopar up to 1990. WagonMan
    Attached Thumbnails Attached Thumbnails WIN_20210614_10_49_11_Pro.jpg  
    1990 Colony Park
    1970 HEMI Superbird

  3. #103
    Lost and driftin' Arquemann's Avatar
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    1985 Mercury Grand Marquis LS, "Maisa"
    2008 BMW 530d Touring, "Femma"

  4. #104
    Member Grand1's Avatar
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    Bench bled master cylinder , booster, vaccum line on. Many thanks to Vic for the help with the brake lines.....no way I could have done it alone.Put a Wildwood proportioning valve on which can also be used for rear rotors in the future. Had to get creative with the bracket and positioning it. Master cylinder lines where tough do to the angle of the valve. Please send good vibes this way as I am gonna brake bleed and check for leaks.

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    Last edited by Grand1; 06-23-2021 at 12:48 PM.



    1978 Grand Marquis 460 2door "Blue Bomber"

    1987 LTD Crown Vic 351w aka the "MI Mountie"

    1989 Colony Park ....Marge still lives!

    1979 Marquis creamy goodness

  5. #105
    2 decades of DDing Box Panthers, now in a Whale VicCrownVic's Avatar
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    Crap, I forgot to bring that float to you. I'll have to remember to bring it with to Derek's place this weekend.
    I'm sitting here staring at the float and realized I was supposed to bring that with me last weekend.

    That Mopar seal is great. The one that came with the lock ring is so thin.
    Vic

    ~ 1998 Mercury Grand Marquis LS - new DD
    ~ 1991 Mercury Grand Marquis LS "The Scab" - plenty of rot, backup/summer cruiser
    ~ 1997 GMC Yukon SLT - wannabe winter DD - many issues, returning sometime in the 2020s
    ~ 1991 Mercury Grand Marquis GS "The Ice Car" - Rotting Retired Winter DD
    ~ 1989 Mercury Grand Marquis GS - Rotting Retired DD
    Gone but not forgotten:
    ~ 1988 Country Squire ~ 1987 Ford Crown Vic

  6. #106
    2 decades of DDing Box Panthers, now in a Whale VicCrownVic's Avatar
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    Well, I brought that float with today, but I totally forgot to give it to you.
    Last edited by VicCrownVic; 06-26-2021 at 10:20 PM.
    Vic

    ~ 1998 Mercury Grand Marquis LS - new DD
    ~ 1991 Mercury Grand Marquis LS "The Scab" - plenty of rot, backup/summer cruiser
    ~ 1997 GMC Yukon SLT - wannabe winter DD - many issues, returning sometime in the 2020s
    ~ 1991 Mercury Grand Marquis GS "The Ice Car" - Rotting Retired Winter DD
    ~ 1989 Mercury Grand Marquis GS - Rotting Retired DD
    Gone but not forgotten:
    ~ 1988 Country Squire ~ 1987 Ford Crown Vic

  7. #107
    Member Grand1's Avatar
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    Fuel tank no longer leaks.....Vic you remember that iffy spot on the fuel line,when we put that Mopar gasket in the tank? Well son of a bitch, have to replace the fuel line lol, its not the rubber hose that leaks ....its at the line and cascades over 'em...has another leak by drivers front door.

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    Last edited by Grand1; 06-28-2021 at 02:09 PM.



    1978 Grand Marquis 460 2door "Blue Bomber"

    1987 LTD Crown Vic 351w aka the "MI Mountie"

    1989 Colony Park ....Marge still lives!

    1979 Marquis creamy goodness

  8. #108
    Member Grand1's Avatar
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    Fixed the fuel line. That Niccopper shit is worth its wieght in gold, stringing a 131 inch long line solo is not the easiest, it helps to be able to easily bend it.

    Fixed two vaccum leaks and got a stronger throttle return spring...its at 625 at idle and it sounds pretty good. No stalling or bogging .....Now, what with the transmission .... it doesn't want to go into gear(it does but reverse is a little noisy "ca thunk") it seems to hesitate to go into drive....a couple of times it didnt go into gear at all. Not going to mess with it till after a fluid and filter change. Any common areas of advice for a C4?



    1978 Grand Marquis 460 2door "Blue Bomber"

    1987 LTD Crown Vic 351w aka the "MI Mountie"

    1989 Colony Park ....Marge still lives!

    1979 Marquis creamy goodness

  9. #109
    GMN Regular slack's Avatar
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    Quote Originally Posted by Grand1 View Post
    Fixed the fuel line. That Niccopper shit is worth its wieght in gold, stringing a 131 inch long line solo is not the easiest, it helps to be able to easily bend it.

    Fixed two vaccum leaks and got a stronger throttle return spring...its at 625 at idle and it sounds pretty good. No stalling or bogging .....Now, what with the transmission .... it doesn't want to go into gear(it does but reverse is a little noisy "ca thunk") it seems to hesitate to go into drive....a couple of times it didnt go into gear at all. Not going to mess with it till after a fluid and filter change. Any common areas of advice for a C4?
    I love the Niccopper stuff. I don't think I'll switch back to the other stuff unless I have to. It's just so easy to bend and flare, it's worth the extra cost.

    The C4 in my 78 when I got it barely shifted at all. After I changed the fluid and filter (dropped pan and drained torque converter) and shift modulator (was leaking trans fluid into the vacuum line), it now shifts great between all gears except there's a slight shift "flare" between 2-3. I honestly figured it was dead and would need a rebuild before the fluid change but lucked out.

    Maybe you'll be lucky too with the fluid change.

    Also, word of warning. There were two pan bolts on the driver's side pan towards the back that screwed through the trans casing so that the threads were exposed on the top. For me, those ended up snapping right off and I had to drill them out and retap the holes. Hopefully you don't have that happen to you as well.


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

  10. #110
    Member Grand1's Avatar
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    Thanks slack, all good info and I sure will baby the bolts. Read about a spring that can bounce out and some C4s don't have a drain plug for the torque convertor . This video was pretty cool:

    https://youtu.be/J_PxQl7p2b0



    1978 Grand Marquis 460 2door "Blue Bomber"

    1987 LTD Crown Vic 351w aka the "MI Mountie"

    1989 Colony Park ....Marge still lives!

    1979 Marquis creamy goodness

  11. #111
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    You where correct, after an eventful trans fluid change ( to include the small weight of the spring disappearing and me crawling over cement for 2 hrs) things shift quite well. Put 5 quarts in and did the whole shifting thing...put in another four and it was two much.....siphoned 2 quarts out and now it seems perfectly filled.....The exception is going from park to reverse, its like a small donkey punch under the tranny (lol). Maybe I should see if my u joints are greaseable. Took her for .3 mile commencement trip on the country roads and I am still alive.



    1978 Grand Marquis 460 2door "Blue Bomber"

    1987 LTD Crown Vic 351w aka the "MI Mountie"

    1989 Colony Park ....Marge still lives!

    1979 Marquis creamy goodness

  12. #112
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    So, I have reverse. Drive engages than goes out. Changed fluid as per above. Was wondering if I can get some ID on some pics. What is this damaged wire/cable from the side of the tranny...attaches to connector in rear of engine bay, per last pic.....?

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    1978 Grand Marquis 460 2door "Blue Bomber"

    1987 LTD Crown Vic 351w aka the "MI Mountie"

    1989 Colony Park ....Marge still lives!

    1979 Marquis creamy goodness

  13. #113
    The Brown Blob 87gtVIC's Avatar
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    Revers lights or neutral safety are my guesses if it runs to the transmission.
    ~David~

    My 1987 Crown Victoria Coupe: The Brown Blob
    My 2004 Mercedes Benz E320:The Benz

    Quote Originally Posted by DerekTheGreat View Post
    But, that's just coming from me, this site's biggest pessimist. Best of luck

  14. #114
    2 decades of DDing Box Panthers, now in a Whale VicCrownVic's Avatar
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    My vote is also for NSS/Reverse lights. Looks like we have some wire repair to do.
    I'm not familiar with the connector in the last picture, it looks like we could just grab a harness from that connector to the trans and simply replace the whole run.

    Also, I would guess that the broken wire down by the trans is the reason for the blue butt connector. Put the rear up on stands and see if the car will try to start in any gear. If it does, then that blue butt connector is bypassing the function of the NSS.
    Vic

    ~ 1998 Mercury Grand Marquis LS - new DD
    ~ 1991 Mercury Grand Marquis LS "The Scab" - plenty of rot, backup/summer cruiser
    ~ 1997 GMC Yukon SLT - wannabe winter DD - many issues, returning sometime in the 2020s
    ~ 1991 Mercury Grand Marquis GS "The Ice Car" - Rotting Retired Winter DD
    ~ 1989 Mercury Grand Marquis GS - Rotting Retired DD
    Gone but not forgotten:
    ~ 1988 Country Squire ~ 1987 Ford Crown Vic

  15. #115
    Member Grand1's Avatar
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    Thanks for the info gents.
    I made a makeshift 10lb weight hanging from the selector and put in drive. Loosened the nut and put the tranny lever in the second dent position per my manual, and retigtened the nut. Crisp gear selection. I put Lucas mechanic in a bottle shit in the tranny, started it....put it in drive and gunned it going for broke. Maybe it was a sticking valve body but its staying in gear for now. Reverse still has a kaaarthunk sound when engaging.....but most ready to take it on the country roads.



    1978 Grand Marquis 460 2door "Blue Bomber"

    1987 LTD Crown Vic 351w aka the "MI Mountie"

    1989 Colony Park ....Marge still lives!

    1979 Marquis creamy goodness

  16. #116
    Donating Member massacre's Avatar
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    Jumpered red/LB wire is usually a NSS defeat. Reverse lights are usually grey/black wire.
    Very common on Fords but yours might be different
    ..

  17. #117
    Member Grand1's Avatar
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    Got everything to stay in gear and took her out on her madien voyage....couldn't resist it from tooling around on my acerage. Puff drives pretty well. Definely more to and fro bouncing (at the right times....car seems more" heavier")then other boxes I have had but maybe it could be the feeling with 14 inch tires. Let the rust and cosmetic battle begin.



    1978 Grand Marquis 460 2door "Blue Bomber"

    1987 LTD Crown Vic 351w aka the "MI Mountie"

    1989 Colony Park ....Marge still lives!

    1979 Marquis creamy goodness

  18. #118
    GMN Regular DerekTheGreat's Avatar
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    It's a sweet car, I'd be all over it.
    1985 LTD Crown Victoria - SOLD
    1988 Town Car Signature - Current Party Barge

  19. #119
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    Hey, it has surprised me how much I like it....getting older as earth tones seem dope now.

    So I cleaned her pretty well, and did a half ass job of clay barring spots. Then two coats of Turtle wax. Now, the driver side is roached, but I have that fender. The other spots seem to be just past surface rust. Should I take off the trim and sand that shit out before winter....or dose it with oily shit?


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    1978 Grand Marquis 460 2door "Blue Bomber"

    1987 LTD Crown Vic 351w aka the "MI Mountie"

    1989 Colony Park ....Marge still lives!

    1979 Marquis creamy goodness

  20. #120
    fomoco panthers !
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    I would not take the chrome off because you may/will find more rust and not be able to get the trim back on.
    Isn't there a POR product that can be painted over when you are ready ?

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