HT4100 4.1, 4.5, 4.9 - Page 19
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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 02:50 AM
    • Replies: 0
    • Views: 56,747
    09-20-04, 02:50 AM Go to last post
  1. Bad Misfire on Low Mile 4.9 (1991 Eldorado)

    Started by Maxxam‎, 04-21-11 01:27 AM
    • Replies: 13
    • Views: 6,558
    04-23-11, 03:19 AM Go to last post
  2. thinking about getting mods on 4.5

    Started by Deville4.5‎, 04-20-11 07:04 PM
    • Replies: 7
    • Views: 2,402
    04-23-11, 02:25 AM Go to last post
  3. 4.1L Idle Speed Issues

    Started by TheRedSharon‎, 01-13-11 11:14 PM
    • Replies: 11
    • Views: 2,350
    04-22-11, 01:25 PM Go to last post
  4. Question Transmission acting funny

    Started by 83CADMAN‎, 06-21-10 07:59 PM
    3 Pages
    1 2 3
    • Replies: 34
    • Views: 3,083
    04-21-11, 02:51 PM Go to last post
  5. More HT4100 Tips

    Started by awadecki‎, 12-01-07 11:22 PM
    • Replies: 13
    • Views: 2,343
    04-21-11, 05:33 AM Go to last post
  6. 4.9 Individual Throttle Body project

    Started by Ghost C‎, 03-04-11 11:14 PM
    3 Pages
    1 2 3
    • Replies: 37
    • Views: 6,818
    04-20-11, 10:58 PM Go to last post
  7. Vapor Canister Filter

    Started by Cristofo‎, 04-15-11 11:58 PM
    • Replies: 1
    • Views: 2,788
    04-16-11, 01:40 AM Go to last post
  8. Engine Swap Process

    Started by Cristofo‎, 03-07-11 10:06 PM
    5 Pages
    1 2 3 4 5
    • Replies: 74
    • Views: 5,797
    04-06-11, 04:14 PM Go to last post
  9. Question Deville 4.9 Intake Mods?

    Started by SamB‎, 10-09-03 08:32 AM
    • Replies: 8
    • Views: 4,837
    04-02-11, 05:05 AM Go to last post
  10. Cold Air Intake?

    Started by Forgoten214‎, 11-19-10 07:53 AM
    2 Pages
    1 2
    • Replies: 23
    • Views: 4,347
    03-30-11, 10:31 PM Go to last post
  11. significant improvements in 94/95 4.9?

    Started by ehall‎, 03-27-11 03:33 PM
    • Replies: 2
    • Views: 622
    03-27-11, 08:16 PM Go to last post
  12. 4.9ltr Northstar performance?

    Started by zweekerboy‎, 08-12-07 01:14 AM
    2 Pages
    1 2
    • Replies: 25
    • Views: 4,580
    03-26-11, 09:53 AM Go to last post
  13. 1986 cadillac Stalling up hills, need help ASAP

    Started by caddeville‎, 01-12-08 07:30 PM
    • Replies: 5
    • Views: 900
    03-16-11, 06:32 AM Go to last post
  14. source for 4.x cylinder sleeves

    Started by warlord‎, 03-10-11 03:18 PM
    • Replies: 0
    • Views: 1,627
    03-10-11, 03:18 PM Go to last post
  15. 4.9 running rough after spark plug change Help!

    Started by Keilyn STS‎, 02-12-11 07:02 PM
    • Replies: 12
    • Views: 4,941
    03-05-11, 08:04 PM Go to last post
  16. Disributor slop question

    Started by Marcelovee‎, 10-10-10 11:32 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 2,240
    03-05-11, 07:38 PM Go to last post
    • Replies: 1
    • Views: 819
    03-02-11, 12:04 PM Go to last post
  17. Falling MPG - 1990 Deville/Fleetwood

    Started by caddynewby‎, 02-25-11 07:25 PM
    • Replies: 9
    • Views: 1,645
    03-01-11, 10:38 AM Go to last post
  18. 96 deville alternator

    Started by 96devilled‎, 02-27-11 07:32 PM
    • Replies: 1
    • Views: 1,042
    02-28-11, 10:48 PM Go to last post
  19. The "4.9 liter turbocharger, stage 1" thread.

    Started by illumina‎, 03-12-05 01:05 AM
    16 Pages
    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
    • Replies: 238
    • Views: 107,739
    02-24-11, 02:56 PM Go to last post
  20. A/C Repair

    Started by tallpat‎, 02-16-11 09:50 PM
    • Replies: 2
    • Views: 849
    02-20-11, 11:28 PM Go to last post
  21. Heater Core Replace BRRR COLD!

    Started by nycnftm‎, 12-06-10 01:03 AM
    • Replies: 11
    • Views: 3,061
    02-18-11, 05:23 PM Go to last post
  22. 4.5 carb and distributor conversion

    Started by sut195‎, 02-17-11 01:50 PM
    • Replies: 3
    • Views: 2,032
    02-18-11, 01:12 PM Go to last post
  23. 4.9 Horrible Idle

    Started by Enigmaticwraith‎, 01-24-11 04:54 PM
    2 Pages
    1 2
    • Replies: 29
    • Views: 2,160
    02-07-11, 09:01 PM Go to last post
    • Replies: 5
    • Views: 1,835
    02-03-11, 09:42 PM Go to last post

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