PotM GrandMarq.NET - Panther Headquarters Forum Index PotM
GMN Chat Room GMN's STORE!! GMN's Gallery Please!!
Page 2 of 3 FirstFirst 123 LastLast
Results 21 to 40 of 48

Thread: Buckling, misfiring, hesitation

  1. #21
    Goal was 'giving back', done by 2020.
    Join Date
    Jul 2014
    Location
    Canada
    Posts
    2,142

    Default

    AFAIK, you risk messing up your cats if you drive with a misfire.

    2000 Grand Marquis LS HPP, a hand-me-down in 2008 with 128,000 km; 175,000 km as of July 2014
    mods: air filter box 'tuba', headlight relay harness, J-mod (around 186,350 km), 70mm throttle body, KYB Gas-A-Just shocks, aluminum driveshaft, ARA3 PCM

  2. #22
    Minivans are tangible evidence of Evil.. 85MercPark's Avatar
    Join Date
    Jun 2005
    Location
    Harrisburg, PA
    Posts
    3,394

    Default

    Unplug that injector?


    Sent from my iPhone using Tapatalk
    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!!

  3. #23
    Beater gonna beat sly's Avatar
    Join Date
    Mar 2010
    Location
    Lewisville, TX
    Posts
    22,389

    Default

    Swap the cop with #6. if the misfire moves... the cop is the problem. might check the plug too while you're in there. If the plug is ok and the ceramic portion doesn't spin (should be tight), just put it back, otherwise clean/replace as needed. If after all of that, the misfire stays on #7, injector, or compression/valves.

    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)
    Quote Originally Posted by gadget73
    ... and it should all work like magic and unicorns and stuff.
    Quote Originally Posted by dmccaig
    Overhead, some poor bastards are flying in airplanes.

  4. #24
    Minivans are tangible evidence of Evil.. 85MercPark's Avatar
    Join Date
    Jun 2005
    Location
    Harrisburg, PA
    Posts
    3,394

    Default

    It's a very inconsistent miss. Comes and goes


    Sent from my iPhone using Tapatalk
    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!!

  5. #25
    Minivans are tangible evidence of Evil.. 85MercPark's Avatar
    Join Date
    Jun 2005
    Location
    Harrisburg, PA
    Posts
    3,394

    Default

    If I unplug the injector should be ok to drive temp as no fuel will go to that cylinder to be dumped in the cats


    Sent from my iPhone using Tapatalk
    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!!

  6. #26
    Beater gonna beat sly's Avatar
    Join Date
    Mar 2010
    Location
    Lewisville, TX
    Posts
    22,389

    Default

    If you unplug that injector... it probably won't idle very well at all if it does. It'll drive even worse.

    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)
    Quote Originally Posted by gadget73
    ... and it should all work like magic and unicorns and stuff.
    Quote Originally Posted by dmccaig
    Overhead, some poor bastards are flying in airplanes.

  7. #27
    Minivans are tangible evidence of Evil.. 85MercPark's Avatar
    Join Date
    Jun 2005
    Location
    Harrisburg, PA
    Posts
    3,394

    Default

    Ok. Have to go to my doc appt tomorrow and no spare vehicle. Sigh


    Sent from my iPhone using Tapatalk
    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!!

  8. #28
    I'm an air-conditioned gypsy gadget73's Avatar
    Join Date
    Jan 2005
    Posts
    40,533

    Default

    Just drive it and stop by the parts store on your way home for the part.

    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 SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  9. #29
    Beater gonna beat sly's Avatar
    Join Date
    Mar 2010
    Location
    Lewisville, TX
    Posts
    22,389

    Default

    Also, when my coil went out, I didn't get a misfire code. When a spark plug went out, I did get a misfire code. It seriously could just be the f'n plug.

    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)
    Quote Originally Posted by gadget73
    ... and it should all work like magic and unicorns and stuff.
    Quote Originally Posted by dmccaig
    Overhead, some poor bastards are flying in airplanes.

  10. #30
    Minivans are tangible evidence of Evil.. 85MercPark's Avatar
    Join Date
    Jun 2005
    Location
    Harrisburg, PA
    Posts
    3,394

    Default

    Can't buy it till Friday. Hospital is 20 miles


    Sent from my iPhone using Tapatalk
    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!!

  11. #31
    Beater gonna beat sly's Avatar
    Join Date
    Mar 2010
    Location
    Lewisville, TX
    Posts
    22,389

    Default

    I'd drive it. I went over 90 miles with a BROKEN spark plug on #7.

    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)
    Quote Originally Posted by gadget73
    ... and it should all work like magic and unicorns and stuff.
    Quote Originally Posted by dmccaig
    Overhead, some poor bastards are flying in airplanes.

  12. #32
    Goal was 'giving back', done by 2020.
    Join Date
    Jul 2014
    Location
    Canada
    Posts
    2,142

    Default

    When I had coil misfire issues, it would show up under specific low RPM conditions, and it would go away when I sped up. Is yours predictable enough that you can try to keep it from happening?

    2000 Grand Marquis LS HPP, a hand-me-down in 2008 with 128,000 km; 175,000 km as of July 2014
    mods: air filter box 'tuba', headlight relay harness, J-mod (around 186,350 km), 70mm throttle body, KYB Gas-A-Just shocks, aluminum driveshaft, ARA3 PCM

  13. #33
    Minivans are tangible evidence of Evil.. 85MercPark's Avatar
    Join Date
    Jun 2005
    Location
    Harrisburg, PA
    Posts
    3,394

    Default

    It is only noticeable under acceleration. If I kept in lower gear I never feel it


    Sent from my iPhone using Tapatalk
    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!!

  14. #34
    Minivans are tangible evidence of Evil.. 85MercPark's Avatar
    Join Date
    Jun 2005
    Location
    Harrisburg, PA
    Posts
    3,394

    Default

    Just went to pull the COP and noticed the hold die bolt was cracked and had been repaired before. Could that be an issue?


    Sent from my iPhone using Tapatalk
    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!!

  15. #35
    Minivans are tangible evidence of Evil.. 85MercPark's Avatar
    Join Date
    Jun 2005
    Location
    Harrisburg, PA
    Posts
    3,394

    Default

    Went to pull the plug and it's so tight. So afraid to break it


    Sent from my iPhone using Tapatalk
    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!!

  16. #36
    Minivans are tangible evidence of Evil.. 85MercPark's Avatar
    Join Date
    Jun 2005
    Location
    Harrisburg, PA
    Posts
    3,394

    Default

    I swapped cops 6and 7. How long should it take to register on the computer?


    Sent from my iPhone using Tapatalk
    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!!

  17. #37
    Minivans are tangible evidence of Evil.. 85MercPark's Avatar
    Join Date
    Jun 2005
    Location
    Harrisburg, PA
    Posts
    3,394

    Default

    After swapping the miss is more consistent but not as strong. ???


    Sent from my iPhone using Tapatalk
    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!!

  18. #38
    I post a lot... knucklehead0202's Avatar
    Join Date
    Apr 2015
    Location
    Southern Commiefornia
    Posts
    2,352

    Default

    Another thing to watch for is loose plugs/stripped threads. Some years had short spark plug threads and would shoot plugs. I had a fun experience with that. Otherwise, replace with motorcraft platinum, put new boots and springs on your COPs and you're good to go.

    85Merc, shoot some PB blaster or whatever penetrating oil in there and wrench that sucker out, you're not likely to break it off, although you DO want to make sure the threads are good afterward. I presume you have the proper tool for the job? Vatozone sells a one-piece socket/wobble extension that is just right for these things. Best 11 bucks I ever spent.

  19. #39
    Minivans are tangible evidence of Evil.. 85MercPark's Avatar
    Join Date
    Jun 2005
    Location
    Harrisburg, PA
    Posts
    3,394

    Default

    Yes have a swivel. Have to let it cool down now


    Sent from my iPhone using Tapatalk
    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!!

  20. #40

    Default

    Quote Originally Posted by knucklehead0202 View Post
    Another thing to watch for is loose plugs/stripped threads. Some years had short spark plug threads and would shoot plugs. I had a fun experience with that. Otherwise, replace with motorcraft platinum, put new boots and springs on your COPs and you're good to go.

    85Merc, shoot some PB blaster or whatever penetrating oil in there and wrench that sucker out, you're not likely to break it off, although you DO want to make sure the threads are good afterward. I presume you have the proper tool for the job? Vatozone sells a one-piece socket/wobble extension that is just right for these things. Best 11 bucks I ever spent.
    ]

    Ford knew of the thread striping and "shooting" spark plugs so they issued a TSB along with some sort of kit for repairs. Not sure of the years and models though.

Page 2 of 3 FirstFirst 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
GMN Approved Links!


www.rockauto.com www.adtr.net