HT4100 4.1, 4.5, 4.9 - Page 14
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HT4100 4.1, 4.5, 4.9 in Cadillac forums : Cadillac Owners Forum, This forum is to discuss the newer aluminum block Cadillac engines.
  1. Sticky Thread Sticky: OBD I codes for 4.x Engines

    Started by DaveSmed‎, 09-20-04 01:50 AM
    • Replies: 0
    • Views: 48,213
    09-20-04, 01:50 AM Go to last post
  1. 4.5L Deville runnability issues/ emissions problems

    Started by nfakbc‎, 09-07-10 10:45 PM
    • Replies: 11
    • Views: 5,460
    11-25-11, 01:27 AM Go to last post
  2. Calling all 4.5 PFI and 4.9 PFI Owners

    Started by awadecki‎, 04-23-07 01:41 AM
    2 Pages
    1 2
    • Replies: 19
    • Views: 5,846
    11-22-11, 01:44 AM Go to last post
  3. Angry replacing water pump on my old '84 DeVille 4.1 engine

    Started by gsim‎, 11-08-11 04:45 PM
    • Replies: 1
    • Views: 2,003
    11-11-11, 10:09 AM Go to last post
  4. Code E49 Air Injection System Fault

    Started by Cristofo‎, 04-06-11 09:40 PM
    2 Pages
    1 2
    • Replies: 29
    • Views: 7,150
    11-09-11, 08:08 AM Go to last post
  5. What are the symptoms of CVJ’s failing?

    Started by 83CADMAN‎, 10-26-11 08:43 PM
    • Replies: 13
    • Views: 983
    11-08-11, 03:22 AM Go to last post
  6. Car not starting

    Started by cadillaceldo93‎, 09-30-11 11:42 AM
    2 Pages
    1 2
    • Replies: 26
    • Views: 1,831
    10-14-11, 10:58 AM Go to last post
  7. Question Problem with 1990 Seville 4.5

    Started by 83CADMAN‎, 09-29-11 01:51 PM
    3 Pages
    1 2 3
    • Replies: 38
    • Views: 5,212
    10-12-11, 09:19 PM Go to last post
  8. change spark plugs, 1989 seville 4.5

    Started by FrankHgh‎, 09-28-11 06:39 PM
    • Replies: 7
    • Views: 3,697
    HUF
    10-03-11, 09:30 PM Go to last post
  9. Rough Running 4.9 - Please Help !

    Started by Moms95DeVille4.9‎, 08-04-11 04:06 PM
    2 Pages
    1 2
    • Replies: 28
    • Views: 5,465
    10-03-11, 01:38 PM Go to last post
  10. Oil Leaking from "Everywhere"

    Started by Enigmaticwraith‎, 09-27-11 04:38 PM
    • Replies: 9
    • Views: 1,700
    09-30-11, 01:20 PM Go to last post
  11. 4.9 EGR Removal???

    Started by H P Bushrod‎, 06-30-06 11:34 AM
    2 Pages
    1 2
    • Replies: 16
    • Views: 2,514
    09-28-11, 11:36 AM Go to last post
    • Replies: 3
    • Views: 982
    09-26-11, 07:23 PM Go to last post
  12. 1991 Cadillac Biarittz - Engine problem.

    Started by iamthearyan‎, 09-03-11 03:09 PM
    • Replies: 6
    • Views: 1,400
    09-25-11, 04:24 AM Go to last post
  13. I'm going to try the 4.1->4.9 conversion

    Started by ehall‎, 01-13-08 01:49 AM
    11 Pages
    1 2 3 4 5 6 7 8 9 10 11
    • Replies: 151
    • Views: 19,526
    09-19-11, 04:42 PM Go to last post
  14. 90 deville 4.5 stalling problems

    Started by dantg‎, 09-15-11 07:48 PM
    • Replies: 6
    • Views: 802
    09-17-11, 02:53 PM Go to last post
  15. Unhappy 1983 Eldorado engine running problem!

    Started by nizki1981‎, 09-13-11 03:09 PM
    • Replies: 2
    • Views: 1,204
    09-14-11, 01:42 AM Go to last post
  16. 1990 cadillac deville

    Started by scootterj‎, 08-27-11 07:22 PM
    • Replies: 5
    • Views: 5,889
    09-08-11, 06:03 AM Go to last post
  17. Did I miss anything?

    Started by watajob‎, 09-05-11 11:08 PM
    • Replies: 9
    • Views: 589
    09-07-11, 08:17 PM Go to last post
  18. hard starting 1997 STS

    Started by aberlin3‎, 09-04-11 11:53 AM
    • Replies: 1
    • Views: 412
    09-05-11, 10:08 AM Go to last post
  19. First Caddy Questions

    Started by 08flstc‎, 09-02-11 06:04 AM
    • Replies: 1
    • Views: 716
    09-02-11, 09:40 AM Go to last post
  20. leftover 4.x parts

    Started by ehall‎, 07-18-11 12:50 PM
    • Replies: 10
    • Views: 2,003
    08-30-11, 09:26 AM Go to last post
  21. Remanufactured 4.1 available

    Started by aeronca36606‎, 08-05-11 05:40 PM
    • Replies: 3
    • Views: 848
    08-29-11, 12:37 PM Go to last post
  22. Fuel Pump Relay - 84 Deville HT4100

    Started by henrydean40‎, 08-21-11 12:40 PM
    • Replies: 1
    • Views: 2,055
    08-28-11, 10:21 AM Go to last post
  23. Question Stumped!

    Started by 83CADMAN‎, 08-27-11 08:28 PM
    • Replies: 2
    • Views: 462
    08-28-11, 10:11 AM Go to last post
    • Replies: 0
    • Views: 1,735
    08-21-11, 10:53 PM Go to last post

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