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Forum: C4 Technical Issues

Any and all problems involving your C4, including ZR1 and LT4. INCLUDE THE YEAR OF YOUR CAR.

  1. Sticky Thread Sticky: OPTISPARK DIAGNOSTICS, or is it something else ?

    Started by c4c5specialist, 12-20-2011 10:25 AM
    2 Pages
    1 2
    • Replies: 18
    • Views: 19,561
    07-28-2016, 03:58 AM Go to last post
  1. Dealers opti

    Started by Chester, Yesterday 03:50 PM
    • Replies: 0
    • Views: 23
    Yesterday, 03:50 PM Go to last post
  2. Need new opti C4

    Started by Chester, 10-20-2017 05:44 AM
    • Replies: 2
    • Views: 43
    Yesterday, 03:46 PM Go to last post
  3. Thumbs up Burping my baby

    Started by Chester, 10-16-2017 05:02 AM
    • Replies: 0
    • Views: 45
    10-16-2017, 05:02 AM Go to last post
  4. Spark plug wire removal opti

    Started by Chester, 10-14-2017 05:09 AM
    • Replies: 0
    • Views: 45
    10-14-2017, 05:09 AM Go to last post
  5. Balancer c4 removal

    Started by Chester, 10-08-2017 05:18 PM
    • Replies: 0
    • Views: 85
    10-08-2017, 05:18 PM Go to last post
  6. low coolant

    Started by ken mohr, 09-19-2017 03:42 AM
    • Replies: 10
    • Views: 361
    10-08-2017, 11:21 AM Go to last post
  7. 87 Corvette Service Engine Soon Code 13 & 44

    Started by jsm00z28ss, 09-18-2017 07:54 PM
    • Replies: 0
    • Views: 131
    09-18-2017, 07:54 PM Go to last post
  8. No crank

    Started by Chester, 09-03-2017 06:13 AM
    • Replies: 3
    • Views: 258
    09-05-2017, 05:31 PM Go to last post
  9. 93 corvette rough idle and missing

    Started by Incahootz69, 06-30-2016 10:49 PM
    • Replies: 1
    • Views: 808
    09-03-2017, 06:07 AM Go to last post
  10. Vacuuming cooling system 1993 corvette

    Started by Chester, 08-28-2017 05:47 AM
    • Replies: 0
    • Views: 191
    08-28-2017, 05:47 AM Go to last post
  11. Bucking when hot

    Started by Chester, 08-25-2017 06:48 AM
    • Replies: 2
    • Views: 193
    08-25-2017, 11:00 AM Go to last post
  12. Post 1993 jacking

    Started by Chester, 08-19-2017 04:36 AM
    • Replies: 0
    • Views: 126
    08-19-2017, 04:36 AM Go to last post
  13. idling at red light

    Started by jethro44, 08-17-2017 04:42 PM
    red light lurch
    • Replies: 1
    • Views: 154
    08-18-2017, 05:57 PM Go to last post
  14. Back firing since new 1993

    Started by Chester, 08-15-2017 05:36 AM
    • Replies: 1
    • Views: 193
    08-17-2017, 08:40 AM Go to last post
  15. Hot air

    Started by Demonstrator47, 07-13-2016 09:36 AM
    • Replies: 7
    • Views: 1,664
    08-17-2017, 08:37 AM Go to last post
  16. rebuilt engine problem

    Started by jethro44, 08-08-2017 09:28 AM
    rebuilt
    • Replies: 2
    • Views: 214
    08-10-2017, 04:44 PM Go to last post
  17. Maintenance on 87 Corvette

    Started by jsm00z28ss, 04-28-2017 08:39 PM
    • Replies: 9
    • Views: 1,195
    06-17-2017, 03:42 AM Go to last post
  18. 96 Air Conditioning Vents Will Not Blow Air

    Started by TommyG, 07-07-2015 07:44 AM
    • Replies: 10
    • Views: 2,941
    06-16-2017, 12:22 AM Go to last post
  19. charging question

    Started by VetVette, 05-27-2017 08:02 AM
    • Replies: 4
    • Views: 598
    05-29-2017, 11:37 AM Go to last post
  20. Dash pad alignment clip

    Started by Danny Boy, 12-30-2016 07:14 PM
    • Replies: 2
    • Views: 819
    12-31-2016, 12:00 PM Go to last post

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