My 97Gt feels sluggish when i want to accelerate.

Discussion in '96-04 - 2V Specific' started by Alfonsov909, Feb 10, 2014.

  1. Alfonsov909

    Alfonsov909 New Member

    Messages:
    7
    Likes Received:
    0
    Joined:
    Feb 10, 2014
    Location:
    San Bernardino Ca
    Hey im new to the Forum, i have a 97 GT pretty much stock, Just CAI and short throw shifter.

    So i noticed that when driving the car, if i try to floor it and gain quick acceleration my car starts to no shake but feel sluggish, I noticed that if i put in New Spark plugs the car will act as if nothing was wrong, great acceleration and smooth. but it only last a day or so, then its back to being sluggish. any idea on why? i do regular maintenance and dont beat on the car.
     
  2. nightfire

    nightfire Member

    Messages:
    162
    Likes Received:
    0
    Joined:
    Nov 21, 2012
    Location:
    TX
    It's because you have a stock NPI GT.....
     
  3. KillNThrill24

    KillNThrill24 Legend

    Messages:
    7,472
    Likes Received:
    408
    Joined:
    Apr 16, 2012
    Location:
    Cleveland Ohio
    ^Hahahaha TRUF!

    But no really check your wires and coils man sounds like it's time to replace them

    Sent from my SCH-I605 using Tapatalk
     
  4. 96blak54

    96blak54 Legend

    Messages:
    6,512
    Likes Received:
    154
    Joined:
    Feb 21, 2011
    Location:
    Ky
    Other tips,
    Clean the maf sensor
    Clear out the egr valve
    Check all vacuum lines for leaks
     
  5. Alfonsov909

    Alfonsov909 New Member

    Messages:
    7
    Likes Received:
    0
    Joined:
    Feb 10, 2014
    Location:
    San Bernardino Ca
    Thanks guys, ima spend my next weekend replacing my coils and cables, and cleaning up anything i can
     
  6. Musturd

    Musturd Legend

    Messages:
    9,065
    Likes Received:
    500
    Joined:
    Feb 12, 2011
    Yea , it's because your car is sluggish . The average person runs 15's with these and my 7000lb cummins is faster then that .... So yea your right they do feel sluggish
     
  7. the5.ohh

    the5.ohh Legend

    Messages:
    9,549
    Likes Received:
    105
    Joined:
    Oct 15, 2012
    Location:
    Shaolin, NY
    Change the coil packs, plug wires.. Do an oil change recently? If not, do one, obviously a new oil filter, put a new fuel filter on too, sometimes they like to get clogged.. Other than that, the car is slow, like all 94-98s doesn't matter if they're 5.0s or 4.6s, they're slow unless you mod them.
     
  8. Musturd

    Musturd Legend

    Messages:
    9,065
    Likes Received:
    500
    Joined:
    Feb 12, 2011
    They're slow period , the only way to wake a npi up is with some sauce or a blower .... Sure you can do pi intake manifold or complete pi swap then were talking ...
     
  9. MustangChris

    MustangChris Legend SN95 Supporter Retired Staff

    Messages:
    27,361
    Likes Received:
    810
    Joined:
    Aug 20, 2008
    Location:
    Aurora, CO
    yes. we've told him NPIs are slow, but it sounds like he has legitimate mechanical issues....

    You likely wont need to replace your coils. They are pretty bullet-proof. Inspect them for cracks. If you do want to replace them, hit a junk yard and find a set of OEM Units. Aftermarket units are usually junk.

    As stated, clean your MAF. You can buy a can of MAF cleaner for $5.00 at the local store. Use that to clean both the MAF sensor as well as the IAT sensor (located right behind the MAF in the intake plumbing.)

    How do your new spark plugs look? Take them out and let us know if any of them appear damaged in any way.

    finally, the spark plugs are located in deep valleys that collect water and dirt. Is there any water inside the spark plug holes? Are the boots on the end of the wire corroding in any way?
     
  10. 96blak54

    96blak54 Legend

    Messages:
    6,512
    Likes Received:
    154
    Joined:
    Feb 21, 2011
    Location:
    Ky
    I totally agree with the pre-98's being slow,...heck....my '96 was an absolute turd,..but it still ran like a top! Not sluggish at all.
    Definitely a gremlin somewhere
     
  11. Goldmember

    Goldmember Well-Known Member

    Messages:
    3,104
    Likes Received:
    53
    Joined:
    Aug 27, 2007
    Location:
    Cornwall, NY
    Clean out the throttle body, too. Sometimes a thin layer of crap can build up behind the plate and screw with your throttle response on tip-in.

    I'll second staying with Ford on the coil packs. In a pinch I used Duralast (neverlast) coils on my old '97 because of a random multiple cylinder misfire. They were toast in less than a year. Sometimes, OE is best. This is one of those cases.

    Always start with a good base line and rule out basic tune-up items.
     
  12. Alfonsov909

    Alfonsov909 New Member

    Messages:
    7
    Likes Received:
    0
    Joined:
    Feb 10, 2014
    Location:
    San Bernardino Ca
    after all it turned out to be the Intake Manifold had a leak and was causing the engine to mis-fire
     
  13. 96blak54

    96blak54 Legend

    Messages:
    6,512
    Likes Received:
    154
    Joined:
    Feb 21, 2011
    Location:
    Ky
    Crazy issue! Im glad you got it figured out!