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Thread: 1983 Mercury Grand Marquis 2Dr "Mercules”

  1. #301
    fomoco panthers !
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    Quote Originally Posted by Grand Marquis GT View Post
    Took me 8 months to find it. 25 bucks shipped!
    The seller did not know or care what he had. You got a good deal.

  2. #302
    GMN Founder Grand Marquis GT's Avatar
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    Oh, and I have a new steering wheel.
    1983 Grand Marquis 2Dr Sedan "Mercules"
    Tremec TKO conversion, hydraulic clutch, HURST equipped!


  3. #303
    GMN Founder Grand Marquis GT's Avatar
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    Thanks everyone for voting me at POTM! So, I woke the beast for the spring/summer, after fixing a roached coolant hose and charged the battery. I picked up some of this rust encapsulator from the local parts guys, and painted it on. This of course was after a session with the grinder/cup wheel. This seam was starting to worry me, as it Is where the sides of the bulkhead are leaking due to rot. Can't wait to fix that soon (sarcasm). I also replaced a missing lugnut, and cleaned it up a bit (but not too much).

    Took a 25-30 min drive, including some 80mph cruising down the interstate (gotta love Texas speed limits!) and it performed about as well as EEC-III CFI will. She's a gutless wonder!
    Attached Thumbnails Attached Thumbnails IMG_4286.jpg   IMG_4287.jpg  
    1983 Grand Marquis 2Dr Sedan "Mercules"
    Tremec TKO conversion, hydraulic clutch, HURST equipped!


  4. #304
    Vinyl Cheese, Meat Pasty SVT98t's Avatar
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    Get some!!!!


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  5. #305
    GMN Founder Grand Marquis GT's Avatar
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    Went to Pick N Pull (Dallas West) yesterday. Harvested a complete 88 wiring harness, dostributor, and the complete intake.

    Want to take a guess what I am going to be doing?
    1983 Grand Marquis 2Dr Sedan "Mercules"
    Tremec TKO conversion, hydraulic clutch, HURST equipped!


  6. #306
    Road Warrior Kodachrome Wolf's Avatar
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    Quote Originally Posted by Grand Marquis GT View Post
    Went to Pick N Pull (Dallas West) yesterday. Harvested a complete 88 wiring harness, dostributor, and the complete intake.

    Want to take a guess what I am going to be doing?
    Swapping from CFI to SEFI? And I would assume you're also going from a Duraspark setup to the TFI module?

    My Cars:
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  7. #307
    GMN Founder Grand Marquis GT's Avatar
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    Correct. Some neanderthal butchered the wiring where the relay connectors were supposed to be, but that looks like a somewhat easy fix. I have been analyzing the wiring diagrams from 88 and 83 and it doesn't look like much has changed.
    1983 Grand Marquis 2Dr Sedan "Mercules"
    Tremec TKO conversion, hydraulic clutch, HURST equipped!


  8. #308
    drink a beer, grow a beard, cut it, grind it, weld it back His Royal Ghostliness's Avatar
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    Enough has changed to annoy the hell outta you tho.

    Chop the square connector for the '83 trans harness off the one that runs along the cowl, splice the 4-wire grey connector for the '88 harness into the '83 wiring that runs alongside the cowl, you'll be using only three of the four '83 wires, remove the red/blue one as it is all stupidly connected and you have the proper one contained into your SEFI harness anyways. Then plug the entire '88 trans harness into both the SEFI harness and the newly spliced connector. This is the straight-forward part.

    Remove all wiring that operates your A/C, new wires are contained into your SEFI harness, you get the nice feature of A/C compressor cutoff during WOT conditions (it helps). The only wire you'll end up with is a piece of black wire with yellow (hashed) tracer coming out of the firewall, splice that into the green/purple wire of the big round 4-pin black SEFI connector in the ECM vicinity, that's what makes the A/C mess do what it needs to do. In the same connector fat orange wire is your fuel pump power off the relay, splice that into the '83 fat tan wire with black hashed stripes from that funny looking 4-pin brocn connector (again in the ECM vicinity).

    And so on and so forth. Some wire colors will match, most will not, and you'll be splitting the wires from one SEFI connector into multiple '83 connectors and harness branches. Then you'll find out some of the SEFI wires have no equivalent in the '83 harnesses anywhere. For example, your new heated O2 sensors do not have a power supply in the CFI harness, you gotta provide them with one yourself. Make sure you have plenty of steaks to throw on the grill, you'll need them to calm your nerves down. lol
    The ones who accomplish true greatness, are the foolish who keep pressing onward.
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  9. #309
    Fastest Box In South Jersey 86VickyLX's Avatar
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    Luckily, you don't have to really worry about the trans harness too much. As you have the manual swap. But having it all self contained in one harness will be easier for diagnostic purposes!
    "Vicky" 1986 Ford LTD Crown Victoria LX ..................................."Blue" 1992 Mercury Grand Marquis LS

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  10. #310
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    Quote Originally Posted by Grand Marquis GT View Post
    Went to Pick N Pull (Dallas West) yesterday. Harvested a complete 88 wiring harness, dostributor, and the complete intake.

    Want to take a guess what I am going to be doing?

    Modify it and Coyote Swap Time!!!! LOL

    It amazes me the kind of wiring fixes people do to keep things running. Somebody had the bright idea of Perma-texing my injector connectors after snapping the plastic clips off of them. Had to replace each connector :-/ Baffles me why anybody would go through the trouble of using Permatex when Home Depot sells duct tape at decent prices?

  11. #311
    GMN Founder Grand Marquis GT's Avatar
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    Next week Instart the nasty job of cleaning all these parts up. Should be fun.

    I also need to get some electrical contact cleaner and start going through the harness.
    1983 Grand Marquis 2Dr Sedan "Mercules"
    Tremec TKO conversion, hydraulic clutch, HURST equipped!


  12. #312
    GMN Founder Grand Marquis GT's Avatar
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    In six weeks when I am all healed up from surgery, work begins again.

    EFI swap, wheels/tires, and going from there.
    1983 Grand Marquis 2Dr Sedan "Mercules"
    Tremec TKO conversion, hydraulic clutch, HURST equipped!


  13. #313
    Member Giraffe's Avatar
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    Looking forward to seeing some progress. She looked pretty nice in person!
    —John

    1990 Mercury Grand Marquis LS - getting her back in shape (POTM March 2017)
    1995 Mustang Cobra coupe - keeping it simple
    1966 Mustang coupe - soon-to-be project: no longer buried in junk; out of the garage!

  14. #314
    GMN Founder Grand Marquis GT's Avatar
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    So, I scored some wheels. I rolled one up to the car to see how it’d look.

    With 235/50R18s tucked into there (already have the 1.5” spacers) it will look perfect!
    Attached Thumbnails Attached Thumbnails E6E1E5D0-19E3-4CE5-ABA9-F6B8DE3D03F0.jpeg  
    1983 Grand Marquis 2Dr Sedan "Mercules"
    Tremec TKO conversion, hydraulic clutch, HURST equipped!


  15. #315
    I'm an air-conditioned gypsy gadget73's Avatar
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    Looks good

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    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  16. #316
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    Love the wheels Tom!!!

  17. #317
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    Project is turning out to be something. Those wheels totally change the demeanor of that Merc

  18. #318
    SUNSHINE, KITTENS, AND RAINBOWS!!! Chuck Norris's Avatar
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    I love the wheels! I'm glad you're enjoying wrenching on the old girl.

    Sent from my SAMSUNG-SM-J320A using Tapatalk
    Back in the saddle again!

    2004 Crown Victoria Police Interceptor in Unimaginative Bureaucratic Brown
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  19. #319
    Member Giraffe's Avatar
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    Those wheels are really going to set the car off!
    —John

    1990 Mercury Grand Marquis LS - getting her back in shape (POTM March 2017)
    1995 Mustang Cobra coupe - keeping it simple
    1966 Mustang coupe - soon-to-be project: no longer buried in junk; out of the garage!

  20. #320
    GMN Founder Grand Marquis GT's Avatar
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    For those not on Facebook, I installed the wheels. I still need some new tires (the fronts are small at 235/40R18) but you get the idea. Sharp!
    Attached Thumbnails Attached Thumbnails E7B94AFB-16D6-4D0F-B905-45A6989ADE6C.jpeg   5CA9F6F3-F434-4A5B-BC53-6257F3557BC1.jpeg   C4F3E871-6073-4340-A07F-93E9D49EC7CF.jpeg  
    1983 Grand Marquis 2Dr Sedan "Mercules"
    Tremec TKO conversion, hydraulic clutch, HURST equipped!


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