HT4100 4.1, 4.5, 4.9 - Page 3
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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: 47,482
    09-20-04, 01:50 AM Go to last post
  1. 82 Seville not idiling or running correctly

    Started by DPD‎, 09-23-14 07:52 PM
    3 Pages
    1 2 3
    • Replies: 43
    • Views: 1,427
    11-12-14, 05:55 PM Go to last post
    • Replies: 1
    • Views: 400
    11-12-14, 08:11 AM Go to last post
  2. 4.9 engine oil pump needed

    Started by shaagger‎, 11-12-14 12:31 AM
    • Replies: 0
    • Views: 257
    11-12-14, 12:31 AM Go to last post
  3. Timing advance car nut

    Started by omston‎, 11-08-14 10:02 PM
    • Replies: 4
    • Views: 312
    11-10-14, 09:15 AM Go to last post
  4. Mid 80's edorado... Do or dont???

    Started by domer94‎, 10-22-14 08:50 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 840
    11-09-14, 06:24 PM Go to last post
  5. Got a Reply! on HT4100 TO 4500 Conversion!

    Started by ForrestAMDXP‎, 02-23-05 03:54 PM
    • Replies: 2
    • Views: 1,301
    11-04-14, 12:15 AM Go to last post
  6. Question 4.1 Oscillating/Hunting idle , any suggestions besides...

    Started by notease‎, 10-12-14 11:22 AM
    2 Pages
    1 2
    • Replies: 15
    • Views: 706
    10-28-14, 04:02 AM Go to last post
  7. Timing marks for 4.1 1984 engine

    Started by jimbab5‎, 10-14-14 08:09 PM
    • Replies: 5
    • Views: 355
    10-16-14, 10:32 AM Go to last post
  8. What year and model is this engine from?

    Started by desotodude‎, 10-03-14 05:38 PM
    • Replies: 4
    • Views: 359
    10-12-14, 10:59 PM Go to last post
  9. Ht4100 Supplement Pellets nowadays ?

    Started by notease‎, 10-09-14 10:21 AM
    • Replies: 5
    • Views: 615
    10-11-14, 04:55 PM Go to last post
  10. 85 Eldorado 4.1

    Started by maxx123‎, 10-09-14 07:40 AM
    • Replies: 4
    • Views: 430
    10-11-14, 08:41 AM Go to last post
  11. First time Cadillac owner - bad 4.1 engine

    Started by 4100engineswap‎, 04-29-14 08:47 AM
    • Replies: 4
    • Views: 1,003
    10-07-14, 05:24 PM Go to last post
    • Replies: 0
    • Views: 325
    10-04-14, 02:18 PM Go to last post
  12. 1990 DeVille, 4.5l engine issues

    Started by caddynewby‎, 05-09-13 02:19 PM
    • Replies: 2
    • Views: 965
    09-28-14, 10:34 AM Go to last post
    • Replies: 6
    • Views: 428
    09-26-14, 04:38 PM Go to last post
  13. 1995 Deville - FPR replacement tips ?

    Started by rayjuswa‎, 09-19-14 09:01 PM
    • Replies: 5
    • Views: 403
    09-23-14, 03:22 PM Go to last post
    • Replies: 9
    • Views: 627
    09-22-14, 11:17 AM Go to last post
    • Replies: 1
    • Views: 483
    09-21-14, 08:44 PM Go to last post
  14. 1984 Cadillac fleetwood brougham.

    Started by JTex817‎, 09-15-14 11:08 PM
    • Replies: 2
    • Views: 381
    09-20-14, 10:48 AM Go to last post
  15. HT4100 pre-purchase help......

    Started by squashman‎, 09-19-14 05:29 PM
    • Replies: 1
    • Views: 383
    09-20-14, 10:34 AM Go to last post
  16. Wink 1986 Eldorado 4.1 v8 (fwd) Water pump Removal

    Started by skane1‎, 09-13-14 03:45 PM
    • Replies: 0
    • Views: 396
    09-13-14, 03:45 PM Go to last post
    • Replies: 0
    • Views: 374
    09-08-14, 02:26 AM Go to last post
  17. pinging problems 1994 Deville 4.9

    Started by funkydunky‎, 09-03-14 12:20 PM
    • Replies: 4
    • Views: 360
    09-05-14, 12:41 AM Go to last post
    • Replies: 0
    • Views: 238
    09-03-14, 04:06 PM Go to last post
  18. Replace head gaskets or not? HT4100

    Started by FREDFLYPOGGER‎, 08-24-14 06:33 PM
    • Replies: 5
    • Views: 774
    08-31-14, 09:12 AM Go to last post

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