Results 1 to 12 of 12

Thread: Sc staring problems

  1. #1
    Join Date
    Aug 2017
    Posts
    5

    Sc staring problems

    Have an 89 thuderbird sc. After running awile i shut it off and it wont start back up. Let it sit for half hour and starts up. Any ideas on what is wrong with it.

  2. #2
    Join Date
    Feb 2013
    Location
    Custar, Ohio
    Posts
    151
    DIS module

  3. #3
    Join Date
    May 2002
    Location
    Dallas, TX
    Posts
    5,623
    We don't really know for sure what causes this, but it has been suggested that injector leak-down causes a flooding condition. Next time on start up, floor the pedal (it shuts off the injectors) and crank for about 5 seconds to clear the intake. Let off and.. see if it helps. If that does the trick, add some injector cleaner to the fuel for a while and see it that helps.

  4. #4
    Join Date
    Dec 2007
    Location
    Salem, OR
    Posts
    6,222
    When you say won't start up - does that means it spins over and won't fire or won't spin over at all?

    Has the multi-wire ignition switch, down on the rt. side of the steering column (not the lock cylinder) ever been replaced that you know of?

  5. #5
    Join Date
    Feb 2013
    Location
    Custar, Ohio
    Posts
    151
    In my 90 I use to have to turn the key on, pull the fuel pump fuse, jump the solenoid, and put the fuse back in before it died. Replaced the DIS module and now starts no problems. 89 and 90 SC's run rich from the factory causing it to flood when the ignition cuts out and hiccups at restart.
    Last edited by 90tbird4.7l; 08-12-2017 at 02:38 PM.

  6. #6
    Join Date
    Aug 2017
    Posts
    5

    Reply

    Turns over fine just wont start. Have tried the putting it to the floor trick dont help. This car sat for two years. I just bought it and had to replaced intake gasket.

  7. #7
    Join Date
    Dec 2007
    Location
    Salem, OR
    Posts
    6,222
    How much of the engine was taken apart? Anything on the engine painted during that process?

  8. #8
    Join Date
    Aug 2017
    Posts
    5
    When i have it running. It runs just fine and the cheak engin light comes on and off dont know if that has any thing to do with the problem. Going to get code reader as soon as i can.

  9. #9
    Join Date
    Aug 2017
    Posts
    5
    Nothing painted just had the fuel rail and the sc off and some tubes for the sc.

  10. #10
    Join Date
    May 2002
    Location
    Dallas, TX
    Posts
    5,623
    Quote Originally Posted by Jam1989 View Post
    When i have it running. It runs just fine and the cheak engin light comes on and off dont know if that has any thing to do with the problem. Going to get code reader as soon as i can.
    Aye.. engine light means there is a code set for something. Check that first. You can also pull codes with a paperclip, pencil and paper. Search on how-to.

  11. #11
    Join Date
    Aug 2017
    Posts
    5
    Dont know much about the cars history other than it was overheating and the previous owner had the heads and every thing els tested. Thats why i put intake gasket in it and that took care of the overheating.

  12. #12
    Join Date
    Dec 2007
    Location
    Salem, OR
    Posts
    6,222
    Quote Originally Posted by Jam1989 View Post
    Going to get code reader as soon as i can.
    In the mean time....next no-start, run thru as much of this troubleshooting process as you can:
    http://mnharms.com/tutorials/disnostart/

Similar Threads

  1. 94 SC PS problem
    By portersc in forum Technical Forum
    Replies: 2
    Last Post: 04-28-2003, 06:19 PM
  2. 90 SC starting problem
    By kevenj90sc in forum Technical Forum
    Replies: 4
    Last Post: 03-31-2003, 02:06 AM
  3. 90 Ford Sc Antenna Problem???
    By wwotr in forum Technical Forum
    Replies: 2
    Last Post: 01-21-2003, 07:19 PM
  4. Non SC ?...tach problem 92 Ranger??..
    By tbirdsc35th in forum Technical Forum
    Replies: 0
    Last Post: 11-12-2002, 12:09 AM
  5. **PLEASE HELP*SC JERKING PROBLEMS?PLEASE HELP!!
    By mauricio323 in forum Super Coupe Club of the Midwest
    Replies: 5
    Last Post: 05-18-2001, 06:04 PM

Posting Permissions

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