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Cadillac Forum: HT4100 4.1, 4.5, 4.9

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: 58,968
    09-20-04, 01:50 AM Go to last post
  1. BBOB or ANYONE---A LITTLE HELP!!

    Started by caddeville, 08-10-05 03:47 AM
    • Replies: 1
    • Views: 497
    08-15-05, 02:46 AM Go to last post
  2. Could a catalytic convertor go bad in 2 years?

    Started by davidjp3, 08-11-05 06:57 PM
    • Replies: 3
    • Views: 975
    08-14-05, 12:53 AM Go to last post
  3. Does the 4.9 really need 91 octane????

    Started by I~LUV~Caddys8792, 08-09-05 06:56 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 1,889
    08-14-05, 12:48 AM Go to last post
  4. 90 Deville hesitation after driving for hours

    Started by AZDinker, 08-09-05 01:36 AM
    • Replies: 8
    • Views: 691
    08-13-05, 09:17 PM Go to last post
  5. Fuel Pump circuit problem 84 Brougham

    Started by Netherx, 05-05-04 02:30 AM
    • Replies: 5
    • Views: 1,330
    08-13-05, 11:57 AM Go to last post
  6. 93 Deville Werid Noise

    Started by CadillacEtc, 07-29-05 12:01 PM
    • Replies: 2
    • Views: 655
    08-12-05, 02:10 AM Go to last post
  7. Anyone tested 4.9's fwhp?

    Started by eldorado1, 08-11-05 09:33 PM
    • Replies: 2
    • Views: 611
    08-11-05, 10:56 PM Go to last post
  8. 4.1 Clutch Fan hooped?

    Started by Catillac, 07-31-05 10:38 AM
    • Replies: 8
    • Views: 820
    08-11-05, 09:18 PM Go to last post
  9. Fuel Injectors help!!!

    Started by oscar75, 08-10-05 10:29 PM
    • Replies: 0
    • Views: 729
    08-10-05, 10:29 PM Go to last post
  10. 91 DeVille--Problems to Watch For

    Started by gdwriter, 08-08-05 06:15 PM
    • Replies: 5
    • Views: 1,416
    08-10-05, 02:53 AM Go to last post
  11. Need help with fuel system

    Started by RickeyGary, 08-09-05 11:49 PM
    • Replies: 3
    • Views: 603
    08-10-05, 12:48 AM Go to last post
  12. fuel injection parts

    Started by jocko777, 08-09-05 10:08 PM
    • Replies: 1
    • Views: 678
    08-09-05, 11:25 PM Go to last post
  13. Got a VSS code on my 1990 Deville!!

    Started by ACDC686, 08-09-05 10:14 PM
    • Replies: 0
    • Views: 695
    08-09-05, 10:14 PM Go to last post
    • Replies: 12
    • Views: 987
    08-09-05, 03:55 AM Go to last post
  14. 91 caddy deville runs wrong

    Started by geno1951, 08-05-05 11:10 PM
    • Replies: 4
    • Views: 860
    08-09-05, 02:47 AM Go to last post
  15. Exclamation miss on the 4.5litre?

    Started by 92sedandeville1, 08-08-05 03:33 AM
    • Replies: 4
    • Views: 694
    08-09-05, 02:37 AM Go to last post
  16. 4.9 liter oil use?

    Started by megatron, 08-08-05 11:14 PM
    • Replies: 2
    • Views: 911
    08-09-05, 12:38 AM Go to last post
  17. Failed Smog Test Please Help!!!

    Started by oscar75, 08-08-05 04:44 PM
    • Replies: 2
    • Views: 735
    08-09-05, 12:08 AM Go to last post
  18. DeVille (DEVIL?) 91 *extreme* power loss.

    Started by GodheadsLament, 07-01-05 07:22 PM
    2 Pages
    1 2
    • Replies: 24
    • Views: 1,947
    08-08-05, 11:27 PM Go to last post
  19. Angry 90 Deville runs like crap

    Started by richbanta, 08-08-05 12:06 PM
    • Replies: 1
    • Views: 440
    08-08-05, 01:08 PM Go to last post
  20. My 1986 Cadi engine revs continually

    Started by navel, 07-03-05 12:18 PM
    • Replies: 8
    • Views: 844
    08-08-05, 01:38 AM Go to last post
  21. Angry help! i think i blew it. 4.5 hg

    Started by dita0401, 07-24-05 10:54 PM
    • Replies: 11
    • Views: 834
    08-07-05, 02:52 AM Go to last post
  22. Transmission service

    Started by MARK2995, 08-06-05 04:41 AM
    • Replies: 0
    • Views: 442
    08-06-05, 04:41 AM Go to last post
  23. 1990 Deville idle issue

    Started by Barndoor, 07-20-05 07:50 PM
    • Replies: 8
    • Views: 1,345
    08-06-05, 02:46 AM Go to last post
  24. 4.1 Serpentine Belt Frozen

    Started by Ed Richardson, 08-05-05 07:26 PM
    • Replies: 2
    • Views: 1,420
    08-05-05, 11:29 PM Go to last post

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