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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: 20,073
    07-28-2016, 03:58 AM Go to last post
  1. wtb kwik lift

    Started by Chester, Today 06:02 AM
    • Replies: 0
    • Views: 12
    Today, 06:02 AM Go to last post
  2. Balancer c4 removal

    Started by Chester, 10-08-2017 05:18 PM
    • Replies: 1
    • Views: 204
    12-07-2017, 06:46 AM Go to last post
  3. Lift to work on c3&C4

    Started by Chester, 12-02-2017 04:47 PM
    • Replies: 3
    • Views: 114
    12-07-2017, 06:43 AM Go to last post
  4. Question C4 opti numbers

    Started by Chester, 12-07-2017 06:38 AM
    • Replies: 0
    • Views: 50
    12-07-2017, 06:38 AM Go to last post
  5. Question exhaust manifold paint

    Started by Chester, 12-02-2017 04:34 PM
    • Replies: 3
    • Views: 100
    12-04-2017, 10:03 PM Go to last post
  6. leather refinish

    Started by ken mohr, 09-05-2016 03:40 AM
    • Replies: 6
    • Views: 882
    12-04-2017, 04:44 AM Go to last post
  7. low coolant

    Started by ken mohr, 09-19-2017 03:42 AM
    2 Pages
    1 2
    • Replies: 21
    • Views: 996
    11-14-2017, 05:27 AM Go to last post
  8. Need new opti C4

    Started by Chester, 10-20-2017 05:44 AM
    • Replies: 7
    • Views: 283
    10-25-2017, 09:40 AM Go to last post
  9. Dealers opti

    Started by Chester, 10-21-2017 03:50 PM
    • Replies: 0
    • Views: 123
    10-21-2017, 03:50 PM Go to last post
  10. Thumbs up Burping my baby

    Started by Chester, 10-16-2017 05:02 AM
    • Replies: 0
    • Views: 126
    10-16-2017, 05:02 AM Go to last post
  11. Spark plug wire removal opti

    Started by Chester, 10-14-2017 05:09 AM
    • Replies: 0
    • Views: 119
    10-14-2017, 05:09 AM Go to last post
  12. 87 Corvette Service Engine Soon Code 13 & 44

    Started by jsm00z28ss, 09-18-2017 07:54 PM
    • Replies: 0
    • Views: 181
    09-18-2017, 07:54 PM Go to last post
  13. No crank

    Started by Chester, 09-03-2017 06:13 AM
    • Replies: 3
    • Views: 345
    09-05-2017, 05:31 PM Go to last post
  14. 93 corvette rough idle and missing

    Started by Incahootz69, 06-30-2016 10:49 PM
    • Replies: 1
    • Views: 880
    09-03-2017, 06:07 AM Go to last post
  15. Vacuuming cooling system 1993 corvette

    Started by Chester, 08-28-2017 05:47 AM
    • Replies: 0
    • Views: 265
    08-28-2017, 05:47 AM Go to last post
  16. Bucking when hot

    Started by Chester, 08-25-2017 06:48 AM
    • Replies: 2
    • Views: 274
    08-25-2017, 11:00 AM Go to last post
  17. Post 1993 jacking

    Started by Chester, 08-19-2017 04:36 AM
    • Replies: 0
    • Views: 180
    08-19-2017, 04:36 AM Go to last post
  18. idling at red light

    Started by jethro44, 08-17-2017 04:42 PM
    red light lurch
    • Replies: 1
    • Views: 206
    08-18-2017, 05:57 PM Go to last post
  19. Back firing since new 1993

    Started by Chester, 08-15-2017 05:36 AM
    • Replies: 1
    • Views: 236
    08-17-2017, 08:40 AM Go to last post
  20. Hot air

    Started by Demonstrator47, 07-13-2016 09:36 AM
    • Replies: 7
    • Views: 1,829
    08-17-2017, 08:37 AM Go to last post

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