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: 47,377
    09-20-04, 01:50 AM Go to last post
  1. valve tap after changing oil - 85 eldo 4.1

    Started by domer94‎, 06-25-15 10:23 PM
    • Replies: 8
    • Views: 189
    07-01-15, 11:31 AM Go to last post
  2. swapping 440-T4

    Started by ehall‎, 04-21-15 12:39 PM
    • Replies: 11
    • Views: 361
    07-01-15, 10:07 AM Go to last post
  3. Changing lifters

    Started by iputon‎, 06-25-15 10:44 PM
    • Replies: 10
    • Views: 274
    06-27-15, 01:28 AM Go to last post
  4. Head Bolts

    Started by yattoka‎, 06-16-15 08:52 PM
    • Replies: 6
    • Views: 202
    06-20-15, 07:35 PM Go to last post
  5. Question Error code 29

    Started by tmgore‎, 12-29-05 04:13 PM
    • Replies: 2
    • Views: 680
    06-14-15, 10:03 AM Go to last post
  6. HT 4100 83' Deville Problems

    Started by LeviKendrick‎, 06-09-15 10:48 AM
    • Replies: 4
    • Views: 175
    06-10-15, 02:28 PM Go to last post
  7. 4.9 Distributor / Timing question

    Started by Cream_Devil_91‎, 06-24-10 01:00 AM
    2 Pages
    1 2
    • Replies: 21
    • Views: 8,181
    06-08-15, 01:17 AM Go to last post
  8. Looking to upgrade injectors ..91 4.9

    Started by zentrade‎, 06-07-15 12:20 PM
    • Replies: 0
    • Views: 144
    06-07-15, 12:20 PM Go to last post
  9. 1985 eldorado biarritz won't start

    Started by bernier7‎, 01-07-12 09:50 PM
    • Replies: 13
    • Views: 8,238
    06-03-15, 02:36 PM Go to last post
  10. 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: 379
    05-31-15, 01:26 AM Go to last post
  11. 440-T4 > 4T6X-E conversion

    Started by ehall‎, 12-19-14 12:28 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 936
    05-20-15, 01:23 PM Go to last post
  12. Refresh HT4100 85 Seville

    Started by waterzap‎, 05-02-15 10:24 AM
    • Replies: 3
    • Views: 221
    05-02-15, 09:20 PM Go to last post
  13. 4.1 Coupe Freshining Up with pics

    Started by Crackillac‎, 04-19-15 11:44 PM
    • Replies: 9
    • Views: 390
    04-29-15, 10:51 PM Go to last post
  14. Coolant Pellets, Tabs.. are these them?

    Started by Crackillac‎, 04-17-15 01:35 AM
    • Replies: 5
    • Views: 288
    04-29-15, 10:13 AM Go to last post
  15. Noise after changing Oil 4.1 CDV

    Started by Crackillac‎, 04-21-15 11:13 PM
    • Replies: 11
    • Views: 311
    04-27-15, 11:23 PM Go to last post
  16. 4.9 cold start knock what is it??

    Started by shaagger‎, 03-23-15 12:48 AM
    • Replies: 7
    • Views: 371
    04-17-15, 03:03 AM Go to last post
    • Replies: 1
    • Views: 591
    04-16-15, 11:36 PM Go to last post
  17. Service Soon digital dash Out

    Started by Crackillac‎, 10-19-13 03:00 AM
    • Replies: 7
    • Views: 846
    04-15-15, 10:46 AM Go to last post
  18. 1985 Eldo transplant...

    Started by black396‎, 04-08-15 05:01 PM
    • Replies: 1
    • Views: 199
    04-09-15, 03:53 PM Go to last post
  19. School Me !

    Started by Rad_A_Lac‎, 04-03-15 12:20 PM
    • Replies: 7
    • Views: 307
    04-07-15, 08:56 AM Go to last post
  20. 92 Allante 4.5 returning E041 Cam sensor

    Started by ht4100‎, 02-02-15 11:45 PM
    • Replies: 4
    • Views: 361
    04-07-15, 01:44 AM Go to last post
  21. 4.9 random stalls

    Started by shawnda‎, 04-02-15 04:28 PM
    • Replies: 3
    • Views: 271
    04-03-15, 09:59 PM Go to last post
  22. new here with some questions

    Started by mark1982‎, 03-29-15 05:27 PM
    • Replies: 5
    • Views: 264
    04-01-15, 05:04 PM Go to last post
  23. Map Sensor

    Started by omston‎, 12-20-14 11:05 PM
    • Replies: 8
    • Views: 421
    03-28-15, 10:21 PM Go to last post
  24. Angry 1992 sts 4.9

    Started by CaddyKevi‎, 02-10-15 06:41 PM
    • Replies: 2
    • Views: 375
    03-10-15, 04:56 AM Go to last post

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