: HT4100 4.1, 4.5, 4.9



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  1. WOT with a high mileage 4.9?
  2. Is my transmission fluid ok or do I need to change it out?
  3. 4T60E transmission problem??
  4. Messed up my transmission
  5. Simple question, what does the HT stand for
  6. Emmissions Testing and the 4.9 and BC Canada guys in here
  7. Knocking
  8. Knock sensor on HT4100?
  9. Cold air zapping coil!
  10. Error code 29
  11. Replaced everything...stumble is worse.
  12. 1984 Eldo 4.1 Engine Color Needed
  13. frontend noise
  14. Fastchip - Does it work?
  15. Does everyone have mandrel-bent piping?
  16. What is the Factory Timing for a 93 Eldorado
  17. I want a DIC (get your mind out of the gutter) :D
  18. 4.9 in Brougham??
  19. engine change
  20. Ram Air/Cold air intake for 4.9?
  21. Underdrive pulleys?
  22. Braking Engine Jump... 1990 DeVille
  23. engine miss 4.5 ???
  24. '90 DeVille ISC motor problem SOLVED
  25. 94 Deville misses backfires & DIES! whats wrong
  26. Fuel injector problem?
  27. Can't get my 4.9 to Adjust timing
  28. Valve Lash Adjustment
  29. 95 4.9 flywheel breakage?
  30. Fuel Pump Relay
  31. Not getting enough spark
  32. Not again!!
  33. Oxygen Sensor
  34. 4.9L Fuel Economy
  35. HT 4100 - Success stories
  36. Gurgling Sound In Engine?
  37. Second generation HT4100
  38. 1984 Fleetwood Code 52 ECM memory reset problem
  39. 84 Eldorado No Start
  40. engine rev's and dies
  41. Engine revs when I turn the wheel????????
  42. throddle control
  43. something happened today with the 90 deville and i don't know what
  44. unique problem 4.9
  45. Stoneys Main Bearing Diary
  46. nees help fast please
  47. 4.9 timing is hard! Idles rough, stumble on acceleration
  48. Water Pump Leakage!!!
  49. Min air ????
  50. Help with a water pump installation!!
  51. How to replace water pump on 92 seville?
  52. Another TPS ?????
  53. 87 Deville 4.1- No fuel!!!!!
  54. horsepower for 4.9
  55. A question for the gurus
  56. Trans cooler leak!
  57. 1990 Cadillac Sedan Deville high idle
  58. new oils verses old oils
  59. Minimum IDLE SCREW adjustment
  60. Oil cooler line o-ring
  61. Is my ISC motor shot? ('90 4.5L)
  62. Help with identifying a GM Goodwrench replacement block.
  63. Where is the MAP sensor located ???? 84 Seville
  64. 89 Deville engine pinging under load when warm
  65. new isc and tps
  66. Code Triggered: E66
  67. Low oil pressure at idle
  68. 4.x starter interchange list
  69. 4.9 91' coupe suspension level
  70. 4100 timing question
  71. Where do these fuel lines run??
  72. 1990 Sedan Deville 4.5L A Few Questions
  73. Uneven idle
  74. Teardown set for friday ...
  75. Ac Compressor
  76. Is this repair worth it?
  77. How Hot is too hot, Ouchi Hottie story inside.
  78. 89 cadillac 4.5 oxygen sensors
  79. Bore spacing
  80. 87 Deville NO FUEL!!!!
  81. FWD HT4100 air pump pupose?
  82. pinhole in block, leaks coolant, what should I do?
  83. 4.9 Just started running rough at idle
  84. Repair cost too high?
  85. 1990 Cadillac Sedan DeVille - Idling Too High
  86. HT4100 valve train pics
  87. Thermosat Question
  88. Am I stuck having to use an 80 series muffler?
  89. Strange COOLANT SENSOR readings--And engine cuts out while driving!!!
  90. water pump
  91. Oil Pan Gasket replacement on a 4.5L
  92. Error Code E41 Camshaft Position Sensor
  93. 4.9 starter problems
  94. 94 deville runs rough at cold start
  95. So Even After $700 dollars it still leaks!
  96. Swap ?'s
  97. Emission test failure
  98. How do I get my 4.5L to coast down to the "70 mpg" benchmark?
  99. A question about the Rotella Motor Oil
  100. Pls Help 4.9 ac compressor froze
  101. Deville shakes violently .. Please help!
  102. 1993 Deville ODB Codes Tripped, Idle Motor
  103. EGR valve replacement fixed the knocking problem!
  104. water pump leaking after i change it
  105. How to enter override E.5.3 on a '90 DeVille
  106. Hose question & error code 30 and 34
  107. 87 Deville Intake
  108. 4.9 intake manifold
  109. Feels like mis-fire. 85 fleetwood 4.1
  110. Engine replacement on an 88 Coupe
  111. fuel pump?????
  112. wot's and front oil seal
  113. oil pan gaskets
  114. emissions failed
  115. Crossover pipe
  116. I got into my diagnostics w/o a clue
  117. Code P039 Current?
  118. error code
  119. Pump thingy :/ 4.1 HT
  120. Programers???
  121. first service on my 89 deville
  122. stumbling, hesitation under load only
  123. 4.9 acceleration? ? ?
  124. Head or Intake?
  125. Are 1990 Throttle bodies obsolete?
  126. 91 DeVille Stalls Repeatedly
  127. Engine Soon EGR code
  128. Motor mounts/CV Joint
  129. Motor mounts/CV Joint
  130. Motor mounts/CV Joint
  131. Deville Acclerating
  132. need help
  133. i need help
  134. 4.5 to 4.9?
  135. HT4100 MSD IGNITON, should I ?
  136. Cooling Pipe Crack
  137. HT4100 Question
  138. 4.9l bolt on mods??
  139. I hate this car.
  140. Stumbling, hesitation, backfiring 89 Deville 4.5
  141. Distributor cap wiring help!!! 4.5 litre 89 deville
  142. HT4100 vacuum pump
  143. Yet another head gasket question
  144. Fuel injection question
  145. Fuel tank baffles or pump?
  146. 88 Coupe Deville Intake Manifold or Head gasket
  147. Help required !!
  148. Crazy Cadillacs
  149. This is a weird one
  150. Ok Guys, So what parts break? Engine Wise.
  151. 91 deville runs a little hot
  152. Fuel Pump Revisited
  153. 4.9 knocking
  154. WTF? Why won't this thing just blow up...
  155. 95 deville idle problem...2
  156. Deville 4.1 fwd rear main oil seal leak :(
  157. water pumps
  158. Nasty squeal - water pump?
  159. what EXACTLY do I need...?!
  160. 1988 Cadillac Coupe Deville Head Gasket
  161. Thermostat housing torque specs
  162. Engine compartment revisions!
  163. 1990 fleetwood engine miss please help
  164. I think I need a distributor 89 Deville 4.5
  165. A blog for Caddy fans
  166. MGB 4.5 project
  167. E52 code
  168. spark wires cover - removal help
  169. 1990 deville 4.5 won't even turn over
  170. water pump replacement
  171. Wheel Bearing installation - help....
  172. Remeber where those vac lines go.....
  173. E Codes on my 4.5 HELP
  174. E39 and E48 codes could I get some advice?
  175. Can anything go wrong/Flushing coolant?
  176. Another way to pull codes?
  177. Camshaft lifter questions
  178. exhaust manifold
  179. 4.5L ECM inputs
  180. Why I hate NTK Oxy Sensors from Now ON.
  181. Coolant pellets/conditoner
  182. Prob with 86 deville sedan with 4.9L *HELP*
  183. Ported vacuum switch--supposed to have a wire connected to it?
  184. 4.9L Aluminum Head project?
  185. Stoneage_caddy I had my car's fuel preasure checked today,have a couple of questions
  186. Anyone running an Auto meter Air/Fuel Ratio meter.
  187. What O2 sensor(s) are you using.
  188. antifreeze for my 85 fleetwoods ht4100
  189. Antifreeze for my HT4100
  190. 1989 Eldorado Biarritz MPG
  191. 1991 deville engine dies when coasting
  192. The Homemade 5 Liter PFI Project .....
  193. 85 seville valve lifters
  194. Blown 4.1 ht in 83 eldorado ?? how to tell ?
  195. Bogging problem
  196. Throttle body problem, help please
  197. I knew I saw it someplace, now where did it go, no not my sanity but close?
  198. 4.5......which sensor is bad?
  199. 4.9 bearing part number or TSB?
  200. Help with HT4100 water pump
  201. which is the better motor
  202. Nitrous Question
  203. 1995 DeVille Idle Fluctuation
  204. issues w/ back pressure?!?
  205. Well the pump is on, but my serpentine belt...what?
  206. 83 Sedan Deville 4100
  207. Its an Invasion 4.9, 5spd Stick Fiero
  208. why I love my 4.5...
  209. 1985 deville coolant and heater core questions.
  210. New member here, and I need some '93 Deville help (water pump installation)
  211. 1990 Allante Bosch fuel injectors/FiveOMotorsports
  212. Cleaning '90 EGR 4.5
  213. Groll Polluter FIXED??????????????????
  214. Where does this fuel line run?
  215. 88 Deville.Tensioner Pulley.
  216. 85 4100 is running rough and hesitating
  217. car will not go past 35mph 82 with a 4.1
  218. Does anyone have a picture or info on the Negative block ground?
  219. EGR Cleaning
  220. Cheap quality Rebuilt transmissions
  221. 4.5 Fast Idle problem
  222. I need a no Yo-Yo shift-kit immediately!! '84 RWD DeVille
  223. 93 Runs rough & loud when wet
  224. Spark Plug Replacement
  225. Fuel Injector Compatiblity
  226. Oil pan gasket
  227. No Spark/ No Start Problem/ Pulling what hair I have left out!
  228. oil change
  229. Accel fuel injectors
  230. Alldata (autozone)????????????????????
  231. A/C Compressor
  232. Help ECM E85
  233. Fuel Pumps on '82-85 HT4100 -- Life span??
  234. Analyzing Fuel Economy
  235. Difference between '82 vs '85 Fuel Injectors on the HT4100????
  236. Oil Theories
  237. Got Injectors? 4.9/4.5
  238. E048
  239. Why Wont This Car Start After I Put In A New Alternator.
  240. '85 Throttle Body in an 82 Eldo???
  241. 4.9 knocking
  242. Hole In Muffler(Recommended Replacement)
  243. 91 DeVille
  244. In reguard to my deville's rough idleing,could it just need an induction service?
  245. Code question.
  246. Plugs for 4.9
  247. 1994 Deville 4.9 (Serpentine Belt) - Save Me From the Junk Yard
  248. Inaccurate gas readout?
  249. 1990 Allante fuel injectors
  250. 4.9 with sleeves?