1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Tach is jumping around like crazy!!!

Discussion in 'ECU's, Electronics, and Tuning' started by leonc, Sep 1, 2005.

  1. leonc

    leonc Senior Member

    Messages:
    182
    Likes Received:
    0
    Joined:
    Oct 10, 2002
    Location:
    Las Cruces
    I have a 94 civic with a b16a sirII. The motor was running descently but the tach jumps now. If im cruising along at what should be 2500 rpm the tach will jump anywhere between 1000 and 8000rpm. If it gets past 5800 i can feel vtec engageing and its not a good feeling if your only reallly at 2500rpm. I hear that it could be my ignitor (is this the same as the ignition module). Anyone have any suggestions.

    Leon
     
  2. integraslut78

    integraslut78 Stylus DJ Extraordinaire

    Messages:
    2,582
    Likes Received:
    2
    Joined:
    Jul 27, 2003
    Location:
    KiLLa kALi
    I had this same problem it ended up being my dizzy cap oh distributor cap :p
     
  3. whiteLS

    whiteLS Senior Member

    Messages:
    126
    Likes Received:
    0
    Joined:
    Nov 28, 2002
    Location:
    Sarasota, Fl
    mine did that right before the distributer seized up
     
  4. pissedoffsol

    pissedoffsol RETIRED

    Messages:
    49,693
    Likes Received:
    53
    Joined:
    Sep 28, 2002
    Location:
    Retirement Home
    def. a distributor problem.

    the tach wire is the blue wire from the distributor... first, check that its seated correctly. if not, try to diagnoss the distributor internals...
     
  5. civicious

    civicious FüK-VTEC VIP

    Messages:
    9,855
    Likes Received:
    629
    Joined:
    Jun 15, 2003
    Location:
    Houston, TX
    It's more than likely your ignitor going out. Do a search, there have been like 2 topics about this in the past week.
     
  6. leonc

    leonc Senior Member

    Messages:
    182
    Likes Received:
    0
    Joined:
    Oct 10, 2002
    Location:
    Las Cruces
    So yesterday my car wouldn't even start and I had to drive 45 minutes to airport. So i went and bought a ignitor and coil and it still wouldn't start. I check to see if was getting spark but no go. What should i check next.
     
  7. xenocron

    xenocron Member

    Messages:
    57
    Likes Received:
    0
    Joined:
    Jun 28, 2005
    Location:
    Bergen Co., NJ


    Did you replace the cap and rotor?

    Did you check the wiring from the distributor to the ECU?
     
  8. pissedoffsol

    pissedoffsol RETIRED

    Messages:
    49,693
    Likes Received:
    53
    Joined:
    Sep 28, 2002
    Location:
    Retirement Home
    :werd:

    and how did it not start? like, did it try to crank, but just wouldn't turn over-- or would nothing happen when you turn the key?
     
  9. leonc

    leonc Senior Member

    Messages:
    182
    Likes Received:
    0
    Joined:
    Oct 10, 2002
    Location:
    Las Cruces
    I just got back from houston today and I got it to start (I was in a hurry and forgot the rotor. I know, i'm a dumbass.) but the tach is still jumping, I replaced the ignitor and coil.
     
  10. leonc

    leonc Senior Member

    Messages:
    182
    Likes Received:
    0
    Joined:
    Oct 10, 2002
    Location:
    Las Cruces
    Should I just replace the whole distributor.

    Leon
     
  11. integraslut78

    integraslut78 Stylus DJ Extraordinaire

    Messages:
    2,582
    Likes Received:
    2
    Joined:
    Jul 27, 2003
    Location:
    KiLLa kALi


    Check the wiring first then if you see nothing wrong with the wiring you may want to do that don't listen to Will :p J/K Will.
    Oh I ended up replacing my whole distributor and the problem was resolved and this sounds like the same problem.
     
  12. leonc

    leonc Senior Member

    Messages:
    182
    Likes Received:
    0
    Joined:
    Oct 10, 2002
    Location:
    Las Cruces
    Well the wiring has to be right becuase it was running great and then it started doing this all of a sudden. Heres my dilema, I bought a new coil and a new ignitor and installed them. That didn't fix the problem and i went to take them back and they wouldn't take them. So I am out $220 already. I would hate to spend $100+ on a whole new distributor without know for sure that it is going to fix it. Really wich I had a friend around here that had one i could borrow to see if that would fix it.

    Leon
     
  13. integraslut78

    integraslut78 Stylus DJ Extraordinaire

    Messages:
    2,582
    Likes Received:
    2
    Joined:
    Jul 27, 2003
    Location:
    KiLLa kALi


    Mang that would be your best bet but since you don't have a friend that has one for you to try out that just sucks. I definitely don't want you to spend more money than you have to but seriously that is what was wrong with mine and it fixed it immediately. I would just hate it if it was something else though and I made you buy the dizzy. But like I said it sounds like the exact same problem I was having. Hell if you are in So. Cal you can use mine to test and make sure it will work but I don't think you are out here.
     
  14. leonc

    leonc Senior Member

    Messages:
    182
    Likes Received:
    0
    Joined:
    Oct 10, 2002
    Location:
    Las Cruces
    Well i really appreciate your offer but I am in New Mexico. Im trying to find one to use for test purposes as we speak. Thanks for being cool.

    Leon
     
  15. integraslut78

    integraslut78 Stylus DJ Extraordinaire

    Messages:
    2,582
    Likes Received:
    2
    Joined:
    Jul 27, 2003
    Location:
    KiLLa kALi
    No problem mang hope you can find one Good Luck.
     
Verification:
Draft saved Draft deleted

Share This Page