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  1. #1
    BCM Cruiser 00SoSlow's Avatar
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    Car runs like POOOOOO... HELP!

    Part throttle it misfires or just not gettin fuel don't know what it is... 5th gear pedal to the floor it spudders/backfires/misfires... the bottom end of every gear it spudders and once past 2500prm's it goes away... don't know what it is, any help would be great


    i did put new plugs in and still happening

  2. #2
    Dusting off my knick knack... MurphysLaw88GT's Avatar
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    what kind of car is this?

  3. #3
    Newbie
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    Maf

  4. #4
    BCM Cruiser 00SoSlow's Avatar
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    sorry its a 87lx 5.0


    if it is the maf, just replace it? or is there anyway to clean it up

  5. #5
    I have no idea where I am 94greenbandit's Avatar
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    Your wires might need to be replaced. In my camaro I had a similiar problem with it stuttering up to about 2200 rpms. I replaced all my wires including the one to the distributor(that was the culprit) and it hasn't done it since. How long ago did your wires get done, check them out if it has been a while. I switched my stock ones with MSD and been good since

  6. #6
    Irish
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    87 5.0 Mustangs did not come with a MAF sensor unless, it has been converted.

  7. #7
    BCM Cruiser 00SoSlow's Avatar
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    thats what i thought... i cleaned the engine bay and moved some plug wires around... seemed to fix the prob we will see tomorrow. ran fine tonite for the 2 hours i was driving

  8. #8
    I have no idea where I am 94greenbandit's Avatar
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    Might to consider changing out those wires if that was the issue

  9. #9
    cuttin' chips
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    what about timing?
    91 Notch - where to begin

  10. #10
    I have no idea where I am 94greenbandit's Avatar
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    Quote Originally Posted by rally_scort View Post
    what about timing?
    Well considering he said he jiggled his wires and then it worked I am gonna figure he had a loose connection

  11. #11
    BCM Cruiser 00SoSlow's Avatar
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    seems like that only lasted a day... feels like its back, lookin into some new wires and distributor... or will just drive it like this than rebuild over winter!!! including NEW EVERYTHING

  12. #12
    I have no idea where I am 94greenbandit's Avatar
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    Quote Originally Posted by 00SoSlow View Post
    or will just drive it like this than rebuild over winter!!! including NEW EVERYTHING
    That could be one way to ensure it doesn't happen again

  13. #13
    Dusting off my knick knack... MurphysLaw88GT's Avatar
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    If it is still Speed-Density, is the car modded at all?

  14. #14
    SET ON SAFE! Sprayaway Fox's Avatar
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    I had a 87 late vert that was mass air. Usually with me when the mass goes bad it searches for a idle (revs up and down at idle) When your totally on it it should be a closed loop and run off the 02s. If its modded pretty good they jerk below 2500 RPM. Plus are you runnin a set of Bosch plugs in it ?if you are get them out of there!. Or if you bought them from a Wal mart. Get a set of MC or Autolites. I also seen that a lot when worked at a parts store. Did all this start when you changed plugs n wires?......Nevermind I see ya prolly got your culprit.
    If a hammer,crescent wrench,duct tape, or JB Weld can't fix it........Its gotta be a electrical problem

  15. #15
    BCM Cruiser 00SoSlow's Avatar
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    the car just started doin it, so i figured i wasn't gettin spark and changed the plugs.... put some bosch in to get me thru the next few weeks... but it still does it? but now its gone again... i don't know whats goin on, only mods are intake and H pipe i just don't get it... vac lines are all connected

    idles perfect tho.. a little high but needle may be off sounds fine

  16. #16
    SET ON SAFE! Sprayaway Fox's Avatar
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    when I worked at the parts store I had exchange bosch plugs on fords. Guy would wanna change plugs and he would bring it back in witha misfire. It happended over 25 times when I was there. Dunno stangs and explorers especially hated them. Good luck with it though. I have bought walmart plugs also that I have personally ran and they run like sheet. Swap them out to another parts store and they work fine.
    If a hammer,crescent wrench,duct tape, or JB Weld can't fix it........Its gotta be a electrical problem

  17. #17
    You lookin at ma ballz CPonyGo's Avatar
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    Look for ground issues..there are like 3-4 ground to chassis. The harness is so old that after you start and drive the car and it warms up- if there is any open/broken wires the heat is affecting it. Had the problem. I found a couple of loose grounds- one behind the battery. I eventually sourced out a NEW injector harness/computer harness online and that did the trick. remember all those 21 year old low voltage wires are brittle or cracked now.

    also check the distributor module -that could have a crack in it.
    Just lurking....

  18. #18
    Post whore DRK's Avatar
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    Andy your avatar is the shit!
    Pity the mate of Queen Mantis, so content, but so headless

  19. #19
    I have no idea where I am 94greenbandit's Avatar
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    Quote Originally Posted by Sprayaway Fox View Post
    It happended over 25 times when I was there. Dunno stangs and explorers especially hated them.
    My Camaro hated Bosch plugs as well

  20. #20
    Praise the Lord. Reverend Cooper's Avatar
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    camaros suck thats why

    special thanks to: Marv @ C&M performance 262-993-6605

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