HT4100 4.1, 4.5, 4.9 - Page 100
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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: Safety Safety Safety !

    Started by Stoneage_Caddy‎, 06-11-04 06:53 PM
    3 Pages
    1 2 3
    • Replies: 34
    • Views: 13,306
    12-15-13, 10:54 AM Go to last post
  2. Sticky Thread Sticky: The "4.9 liter turbocharger, stage 1" thread.

    Started by illumina‎, 03-12-05 12:05 AM
    16 Pages
    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
    • Replies: 238
    • Views: 89,082
    02-24-11, 01:56 PM Go to last post
  3. Sticky Thread Sticky: OBD I codes for 4.x Engines

    Started by DaveSmed‎, 09-20-04 01:50 AM
    • Replies: 0
    • Views: 40,946
    09-20-04, 01:50 AM Go to last post
  1. 4.9 HEI ignition

    Started by DFBonnett‎, 12-03-04 03:01 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 1,419
    10-10-05, 07:47 PM Go to last post
  2. Coolant pellets/conditoner

    Started by MARK2995‎, 10-06-05 08:09 PM
    • Replies: 2
    • Views: 510
    10-10-05, 02:04 AM Go to last post
  3. E Codes on my 4.5 HELP

    Started by kneesrbad2‎, 10-08-05 01:01 PM
    • Replies: 5
    • Views: 501
    10-09-05, 08:49 PM Go to last post
  4. Can anything go wrong/Flushing coolant?

    Started by MARK2995‎, 10-08-05 05:27 AM
    • Replies: 2
    • Views: 495
    Kev
    10-08-05, 04:30 PM Go to last post
  5. Remeber where those vac lines go.....

    Started by Stoneage_Caddy‎, 10-08-05 04:09 PM
    • Replies: 0
    • Views: 349
    10-08-05, 04:09 PM Go to last post
  6. Question What is the Top mph a 4.9 can hit before it cuts off?

    Started by stephen j s‎, 08-03-05 05:32 PM
    3 Pages
    1 2 3
    • Replies: 38
    • Views: 2,336
    10-08-05, 02:19 PM Go to last post
  7. Question E39 and E48 codes could I get some advice?

    Started by misfit82‎, 10-08-05 08:25 AM
    • Replies: 1
    • Views: 552
    10-08-05, 10:47 AM Go to last post
  8. Throttle body problem, help please

    Started by kneesrbad2‎, 09-30-05 03:08 PM
    • Replies: 8
    • Views: 616
    10-08-05, 02:13 AM Go to last post
  9. 85 4100 is running rough and hesitating

    Started by AElayyat‎, 09-22-05 11:11 PM
    2 Pages
    1 2
    • Replies: 28
    • Views: 1,615
    10-07-05, 08:39 PM Go to last post
  10. 1991 deville engine dies when coasting

    Started by devilleguy‎, 10-03-05 08:43 PM
    • Replies: 3
    • Views: 466
    10-07-05, 04:34 PM Go to last post
  11. Poll Poll: 4.9L Aluminum Head project?

    Started by N0DIH‎, 10-06-05 01:46 AM
    • Replies: 11
    • Views: 1,074
    10-07-05, 12:51 PM Go to last post
  12. 4.5L ECM inputs

    Started by mdogg1950‎, 10-07-05 10:50 AM
    • Replies: 0
    • Views: 468
    10-07-05, 10:50 AM Go to last post
    • Replies: 7
    • Views: 538
    10-06-05, 07:25 PM Go to last post
  13. The Homemade 5 Liter PFI Project .....

    Started by Stoneage_Caddy‎, 10-03-05 08:12 PM
    • Replies: 13
    • Views: 647
    10-06-05, 06:07 PM Go to last post
  14. Bogging problem

    Started by OneSweetRide‎, 09-30-05 11:15 PM
    • Replies: 5
    • Views: 441
    10-06-05, 06:23 AM Go to last post
  15. What O2 sensor(s) are you using.

    Started by Capt Fiero‎, 10-05-05 12:40 AM
    • Replies: 2
    • Views: 347
    10-06-05, 06:16 AM Go to last post
  16. Nitrous Question

    Started by gtduke‎, 09-28-05 06:39 PM
    • Replies: 14
    • Views: 561
    10-06-05, 01:30 AM Go to last post
    • Replies: 3
    • Views: 374
    10-05-05, 08:31 PM Go to last post
  17. 85 seville valve lifters

    Started by chronix2121‎, 10-03-05 07:42 PM
    • Replies: 2
    • Views: 419
    10-04-05, 09:45 PM Go to last post
  18. Antifreeze for my HT4100

    Started by Brians 85 fleetwood‎, 10-04-05 08:37 PM
    • Replies: 1
    • Views: 512
    Kev
    10-04-05, 08:51 PM Go to last post
  19. antifreeze for my 85 fleetwoods ht4100

    Started by Brians 85 fleetwood‎, 10-04-05 08:40 PM
    • Replies: 1
    • Views: 668
    Kev
    10-04-05, 08:46 PM Go to last post
  20. Blown 4.1 ht in 83 eldorado ?? how to tell ?

    Started by landowm‎, 10-02-05 09:22 PM
    • Replies: 2
    • Views: 525
    10-04-05, 11:01 AM Go to last post
  21. Its an Invasion 4.9, 5spd Stick Fiero

    Started by Capt Fiero‎, 09-26-05 01:42 AM
    2 Pages
    1 2
    • Replies: 16
    • Views: 2,402
    10-03-05, 07:22 AM Go to last post
  22. 83 Sedan Deville 4100

    Started by airboatman‎, 09-27-05 02:32 PM
    • Replies: 3
    • Views: 658
    10-03-05, 12:01 AM Go to last post
  23. issues w/ back pressure?!?

    Started by Dew Barfer‎, 09-27-05 09:34 PM
    • Replies: 3
    • Views: 380
    10-02-05, 11:07 PM Go to last post

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