HT4100 4.1, 4.5, 4.9
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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: 48,983
    09-20-04, 01:50 AM Go to last post
  1. 4.9 oil pump in 4.5

    Started by drewsdeville‎, 09-28-10 07:21 PM
    • Replies: 9
    • Views: 1,614
    08-29-15, 09:34 AM Go to last post
  2. A/c Cycles every 8-15 seconds-88 Eldorado

    Started by ht4100‎, 08-23-15 12:51 AM
    • Replies: 2
    • Views: 121
    08-23-15, 09:16 PM Go to last post
  3. ISC issue

    Started by MSully‎, 08-20-15 12:38 PM
    • Replies: 9
    • Views: 155
    08-23-15, 09:10 PM Go to last post
  4. Mysterious missing issue

    Started by MSully‎, 08-14-15 10:39 AM
    • Replies: 6
    • Views: 145
    08-23-15, 04:31 PM Go to last post
  5. tick tick ticking

    Started by ehall‎, 07-29-15 12:58 PM
    • Replies: 14
    • Views: 306
    08-23-15, 04:24 PM Go to last post
  6. Noise after changing Oil 4.1 CDV

    Started by Crackillac‎, 04-21-15 11:13 PM
    • Replies: 13
    • Views: 411
    08-21-15, 09:22 AM Go to last post
  7. 1985 eldorado biarritz won't start

    Started by bernier7‎, 01-07-12 09:50 PM
    • Replies: 14
    • Views: 9,043
    08-17-15, 10:51 PM Go to last post
  8. 440-T4 > 4T6X-E conversion

    Started by ehall‎, 12-19-14 12:28 PM
    2 Pages
    1 2
    • Replies: 24
    • Views: 1,091
    08-17-15, 10:50 PM Go to last post
  9. valve tap after changing oil - 85 eldo 4.1

    Started by domer94‎, 06-25-15 10:23 PM
    • Replies: 9
    • Views: 291
    08-17-15, 10:50 PM Go to last post
  10. 91 4.9 Runs Rich and Gas Mileage Question

    Started by awadecki‎, 07-04-06 01:12 AM
    • Replies: 10
    • Views: 2,180
    08-17-15, 10:49 PM Go to last post
  11. P085 ....... Idle Throttle Angle Too High

    Started by johnp‎, 05-21-05 01:11 PM
    • Replies: 8
    • Views: 5,369
    08-16-15, 07:19 PM Go to last post
  12. swapping 440-T4

    Started by ehall‎, 04-21-15 12:39 PM
    • Replies: 14
    • Views: 446
    07-16-15, 12:02 AM Go to last post
  13. Code E053 question

    Started by Tatsr05‎, 07-12-15 10:44 PM
    • Replies: 2
    • Views: 172
    07-13-15, 02:49 PM Go to last post
  14. 4.1 Troubles on my 84 Deville

    Started by MaineWater‎, 07-12-15 10:46 PM
    • Replies: 1
    • Views: 196
    07-13-15, 12:07 PM Go to last post
  15. oil leak in filter area - 85 eldo 4.1

    Started by domer94‎, 07-08-15 12:00 PM
    • Replies: 4
    • Views: 184
    07-09-15, 10:09 PM Go to last post
  16. Fuel consumption and outside temp

    Started by caddynewby‎, 07-06-15 11:36 AM
    • Replies: 3
    • Views: 176
    07-09-15, 07:46 PM Go to last post
  17. Changing lifters

    Started by iputon‎, 06-25-15 10:44 PM
    • Replies: 10
    • Views: 363
    06-27-15, 01:28 AM Go to last post
  18. Head Bolts

    Started by yattoka‎, 06-16-15 08:52 PM
    • Replies: 6
    • Views: 286
    06-20-15, 07:35 PM Go to last post
  19. Question Error code 29

    Started by tmgore‎, 12-29-05 04:13 PM
    • Replies: 2
    • Views: 759
    06-14-15, 10:03 AM Go to last post
  20. HT 4100 83' Deville Problems

    Started by LeviKendrick‎, 06-09-15 10:48 AM
    • Replies: 4
    • Views: 295
    06-10-15, 02:28 PM Go to last post
  21. 4.9 Distributor / Timing question

    Started by Cream_Devil_91‎, 06-24-10 01:00 AM
    2 Pages
    1 2
    • Replies: 21
    • Views: 8,865
    06-08-15, 01:17 AM Go to last post
  22. Looking to upgrade injectors ..91 4.9

    Started by zentrade‎, 06-07-15 12:20 PM
    • Replies: 0
    • Views: 199
    06-07-15, 12:20 PM Go to last post
  23. Instructions on changing the coolant in an HT-4100?

    Started by Thizzmobile‎, 05-27-15 03:28 AM
    2 Pages
    1 2
    • Replies: 16
    • Views: 525
    05-31-15, 01:26 AM Go to last post
  24. Refresh HT4100 85 Seville

    Started by waterzap‎, 05-02-15 10:24 AM
    • Replies: 3
    • Views: 308
    05-02-15, 09:20 PM Go to last post
  25. 4.1 Coupe Freshining Up with pics

    Started by Crackillac‎, 04-19-15 11:44 PM
    • Replies: 9
    • Views: 474
    04-29-15, 10:51 PM Go to last post

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