Results 1 to 7 of 7

Thread: need help (coil packs resistance)

  1. #1
    Join Date
    Jan 2006
    Location
    NY
    Posts
    337
    My Cars
    1994 325i

    need help (coil packs resistance) thread is closed

    thread is closed
    Last edited by cabrit; 01-09-2011 at 08:56 PM. Reason: closing thread

  2. #2
    Join Date
    Mar 2010
    Location
    NEW
    Posts
    3
    My Cars
    BOBB
    thankkkkkkkksss best web www.wowlife.tk and www.waymoney.tk

  3. #3
    Join Date
    Oct 2006
    Location
    Greenville, NC
    Posts
    1,718
    My Cars
    1997 328i convertible
    You can't possibly have dead coils if the car is running. It is very hard to measure resistance less than 2 ohms with a conventional meter. If you don't have a four wire resistance bridge, you can't tell the difference between 0.4 and 1.4 ohms. But you can measure the secondary resistance.

  4. #4
    Join Date
    Feb 2009
    Location
    Long Island, NY
    Posts
    8,167
    My Cars
    97 M3 & 13 Rav4
    Higher resistance means the spark isn't as hot. The lower the resistance the stronger the spark.

    Make sure you're using well calibrated meter if you want the most accurate reading. Fluke makes amazing meters.

    If any of your coilpacks were dead you'd have misfires or dead cylinders.

  5. #5
    Join Date
    May 2004
    Location
    Florida Panhandle/ Ohio
    Posts
    7,318
    My Cars
    14 JGC/13 E88 128i
    Coil packs have a primary coil and 2ndary coils and you can only measure the primary coil. If your car misses under load you most likely have a dead coil. It will be fine at idle and miss under load.
    Suggest buying a coil and swapping one out at a time until you locate it. Unless you have access to a good diagnostic machine you can't determine the failed coil.

  6. #6
    Join Date
    Feb 2009
    Location
    Long Island, NY
    Posts
    8,167
    My Cars
    97 M3 & 13 Rav4
    Completely forgot about the secondary coil, good catch.

  7. #7
    Join Date
    Jan 2006
    Location
    NY
    Posts
    337
    My Cars
    1994 325i
    oops i meant are my coils in the verge of dying.
    thanks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •