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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: 20
    • Views: 102,374
    07-09-2020, 04:04 AM Go to last post
  1. C4 upper control arm mounts

    Started by kahona731, 09-21-2022 12:18 PM
    • Replies: 0
    • Views: 606
    09-21-2022, 12:18 PM Go to last post
  2. 1995 LT1 with High Idle

    Started by fbekampis, 09-11-2022 02:49 PM
    • Replies: 0
    • Views: 347
    09-11-2022, 02:49 PM Go to last post
  3. High idle 84 Crossfire TBI

    Started by Frank2222, 08-28-2022 09:30 AM
    • Replies: 2
    • Views: 740
    09-11-2022, 08:10 AM Go to last post
  4. Injector ohms

    Started by ken mohr, 10-24-2021 06:40 AM
    injectors
    • Replies: 1
    • Views: 3,777
    11-01-2021, 02:28 AM Go to last post
  5. Average mileage gauge misbehaving

    Started by ken mohr, 11-27-2020 03:31 AM
    • Replies: 0
    • Views: 10,355
    11-27-2020, 03:31 AM Go to last post
  6. Rack andd pinion

    Started by ken mohr, 11-21-2020 07:33 AM
    • Replies: 2
    • Views: 13,525
    11-23-2020, 12:10 PM Go to last post
  7. hard start hot

    Started by ken mohr, 08-21-2020 02:20 AM
    • Replies: 14
    • Views: 21,177
    09-17-2020, 02:43 AM Go to last post
  8. 89 Vette steering rack.

    Started by ken mohr, 02-16-2020 07:49 AM
    • Replies: 4
    • Views: 12,326
    08-28-2020, 02:13 PM Go to last post
  9. Rocker arms

    Started by Quick96vette, 08-12-2020 07:59 AM
    • Replies: 1
    • Views: 16,669
    08-18-2020, 04:06 AM Go to last post
  10. A/C charge8

    Started by russellsue, 07-09-2020 05:53 PM
    • Replies: 2
    • Views: 11,180
    07-10-2020, 12:12 PM Go to last post
  11. Question C4 air blend door

    Started by russellsue, 07-07-2020 02:31 PM
    • Replies: 1
    • Views: 9,830
    07-10-2020, 07:36 AM Go to last post
  12. Good mechanic

    Started by rhandle, 06-16-2020 01:39 AM
    • Replies: 5
    • Views: 13,123
    06-17-2020, 07:35 AM Go to last post
  13. 87 Corvette Code 42

    Started by jsm00z28ss, 05-29-2020 09:19 PM
    • Replies: 2
    • Views: 9,948
    05-30-2020, 09:13 PM Go to last post
  14. Replacing oil pressure switch?

    Started by Blu88, 05-07-2020 01:19 PM
    • Replies: 6
    • Views: 22,700
    05-20-2020, 02:42 AM Go to last post
  15. transmision problems

    Started by winston, 04-23-2019 08:13 PM
    • Replies: 3
    • Views: 34,210
    07-31-2019, 02:10 PM Go to last post
  16. Unhappy fuel problem

    Started by vanzantdoug, 07-27-2018 01:06 PM
    • Replies: 2
    • Views: 32,695
    07-31-2019, 02:05 PM Go to last post
  17. Starter

    Started by Roc, 07-20-2019 10:08 AM
    • Replies: 1
    • Views: 25,705
    07-21-2019, 06:42 AM Go to last post
  18. Bore size for rebuild on master cylinder

    Started by ken mohr, 03-15-2019 12:03 PM
    • Replies: 2
    • Views: 32,286
    03-17-2019, 04:10 AM Go to last post
  19. Air conditioning problems

    Started by Sfcsb1, 06-04-2014 05:31 PM
    • Replies: 13
    • Views: 48,145
    01-17-2019, 03:54 PM Go to last post
  20. 94 6 speed low idle

    Started by Tbone, 10-17-2018 01:53 PM
    • Replies: 0
    • Views: 30,663
    10-17-2018, 01:53 PM Go to last post

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