: HT4100 4.1, 4.5, 4.9



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  1. Sonofabitch !!!!!!
  2. 4100 emmissions air pump
  3. 1990 deville help
  4. Power improvement... from a carburator?
  5. Sad Caddy's in the background.
  6. Water Pump for 89 DeVille
  7. Heatsoak and Starters. Is this a Caddy problem too or just Cadero's.
  8. ISC motor problem? '94 Deville
  9. 88 DeVille Serpentine Belt
  10. Noise in Transmission?
  11. Coolant Leak - How to find?
  12. Good care (ATF) for 4T60E
  13. 1994 Deville 4.9 fuel pressure
  14. Please help an old man. (Backfiring voodoo fleetwood)
  15. Please Help! 4.9 won't shift out of second gear.
  16. Tranny problems engaging
  17. 89 deville 4.5 tranny in 93 seville 4.9 will it work?
  18. Need help asap.I have a draeded p093, is my trans gone?
  19. Some people just don't want to listen
  20. 92 Deville Rough Idle Periodic Stallin
  21. (3 4.9 bad mpg.Can low ac refrigerint cause this?
  22. Need a good write up for cleaning Tb and EGR valve please (4.9)
  23. WOT with a high mileage 4.9?
  24. Is my transmission fluid ok or do I need to change it out?
  25. 4T60E transmission problem??
  26. Messed up my transmission
  27. Simple question, what does the HT stand for
  28. Emmissions Testing and the 4.9 and BC Canada guys in here
  29. Knocking
  30. Knock sensor on HT4100?
  31. Cold air zapping coil!
  32. Error code 29
  33. Replaced everything...stumble is worse.
  34. 1984 Eldo 4.1 Engine Color Needed
  35. frontend noise
  36. Fastchip - Does it work?
  37. Does everyone have mandrel-bent piping?
  38. What is the Factory Timing for a 93 Eldorado
  39. I want a DIC (get your mind out of the gutter) :D
  40. 4.9 in Brougham??
  41. engine change
  42. Ram Air/Cold air intake for 4.9?
  43. Underdrive pulleys?
  44. Braking Engine Jump... 1990 DeVille
  45. engine miss 4.5 ???
  46. '90 DeVille ISC motor problem SOLVED
  47. 94 Deville misses backfires & DIES! whats wrong
  48. Fuel injector problem?
  49. Can't get my 4.9 to Adjust timing
  50. Valve Lash Adjustment
  51. 95 4.9 flywheel breakage?
  52. Fuel Pump Relay
  53. Not getting enough spark
  54. Not again!!
  55. Oxygen Sensor
  56. 4.9L Fuel Economy
  57. HT 4100 - Success stories
  58. Gurgling Sound In Engine?
  59. Second generation HT4100
  60. 1984 Fleetwood Code 52 ECM memory reset problem
  61. 84 Eldorado No Start
  62. engine rev's and dies
  63. Engine revs when I turn the wheel????????
  64. throddle control
  65. something happened today with the 90 deville and i don't know what
  66. unique problem 4.9
  67. Stoneys Main Bearing Diary
  68. nees help fast please
  69. 4.9 timing is hard! Idles rough, stumble on acceleration
  70. Water Pump Leakage!!!
  71. Min air ????
  72. Help with a water pump installation!!
  73. How to replace water pump on 92 seville?
  74. Another TPS ?????
  75. 87 Deville 4.1- No fuel!!!!!
  76. horsepower for 4.9
  77. A question for the gurus
  78. Trans cooler leak!
  79. 1990 Cadillac Sedan Deville high idle
  80. new oils verses old oils
  81. Minimum IDLE SCREW adjustment
  82. Oil cooler line o-ring
  83. Is my ISC motor shot? ('90 4.5L)
  84. Help with identifying a GM Goodwrench replacement block.
  85. Where is the MAP sensor located ???? 84 Seville
  86. 89 Deville engine pinging under load when warm
  87. new isc and tps
  88. Code Triggered: E66
  89. Low oil pressure at idle
  90. 4.x starter interchange list
  91. 4.9 91' coupe suspension level
  92. 4100 timing question
  93. Where do these fuel lines run??
  94. 1990 Sedan Deville 4.5L A Few Questions
  95. Uneven idle
  96. Teardown set for friday ...
  97. Ac Compressor
  98. Is this repair worth it?
  99. How Hot is too hot, Ouchi Hottie story inside.
  100. 89 cadillac 4.5 oxygen sensors
  101. Bore spacing
  102. 87 Deville NO FUEL!!!!
  103. FWD HT4100 air pump pupose?
  104. pinhole in block, leaks coolant, what should I do?
  105. 4.9 Just started running rough at idle
  106. Repair cost too high?
  107. 1990 Cadillac Sedan DeVille - Idling Too High
  108. HT4100 valve train pics
  109. Thermosat Question
  110. Am I stuck having to use an 80 series muffler?
  111. Strange COOLANT SENSOR readings--And engine cuts out while driving!!!
  112. water pump
  113. Oil Pan Gasket replacement on a 4.5L
  114. Error Code E41 Camshaft Position Sensor
  115. 4.9 starter problems
  116. 94 deville runs rough at cold start
  117. So Even After $700 dollars it still leaks!
  118. Swap ?'s
  119. Emission test failure
  120. How do I get my 4.5L to coast down to the "70 mpg" benchmark?
  121. A question about the Rotella Motor Oil
  122. Pls Help 4.9 ac compressor froze
  123. Deville shakes violently .. Please help!
  124. 1993 Deville ODB Codes Tripped, Idle Motor
  125. EGR valve replacement fixed the knocking problem!
  126. water pump leaking after i change it
  127. How to enter override E.5.3 on a '90 DeVille
  128. Hose question & error code 30 and 34
  129. 87 Deville Intake
  130. 4.9 intake manifold
  131. Feels like mis-fire. 85 fleetwood 4.1
  132. Engine replacement on an 88 Coupe
  133. fuel pump?????
  134. wot's and front oil seal
  135. oil pan gaskets
  136. emissions failed
  137. Crossover pipe
  138. I got into my diagnostics w/o a clue
  139. Code P039 Current?
  140. error code
  141. Pump thingy :/ 4.1 HT
  142. Programers???
  143. first service on my 89 deville
  144. stumbling, hesitation under load only
  145. 4.9 acceleration? ? ?
  146. Head or Intake?
  147. Are 1990 Throttle bodies obsolete?
  148. 91 DeVille Stalls Repeatedly
  149. Engine Soon EGR code
  150. Motor mounts/CV Joint
  151. Motor mounts/CV Joint
  152. Motor mounts/CV Joint
  153. Deville Acclerating
  154. need help
  155. i need help
  156. 4.5 to 4.9?
  157. HT4100 MSD IGNITON, should I ?
  158. Cooling Pipe Crack
  159. HT4100 Question
  160. 4.9l bolt on mods??
  161. I hate this car.
  162. Stumbling, hesitation, backfiring 89 Deville 4.5
  163. Distributor cap wiring help!!! 4.5 litre 89 deville
  164. HT4100 vacuum pump
  165. Yet another head gasket question
  166. Fuel injection question
  167. Fuel tank baffles or pump?
  168. 88 Coupe Deville Intake Manifold or Head gasket
  169. Help required !!
  170. Crazy Cadillacs
  171. This is a weird one
  172. Ok Guys, So what parts break? Engine Wise.
  173. 91 deville runs a little hot
  174. Fuel Pump Revisited
  175. 4.9 knocking
  176. WTF? Why won't this thing just blow up...
  177. 95 deville idle problem...2
  178. Deville 4.1 fwd rear main oil seal leak :(
  179. water pumps
  180. Nasty squeal - water pump?
  181. what EXACTLY do I need...?!
  182. 1988 Cadillac Coupe Deville Head Gasket
  183. Thermostat housing torque specs
  184. Engine compartment revisions!
  185. 1990 fleetwood engine miss please help
  186. I think I need a distributor 89 Deville 4.5
  187. A blog for Caddy fans
  188. MGB 4.5 project
  189. E52 code
  190. spark wires cover - removal help
  191. 1990 deville 4.5 won't even turn over
  192. water pump replacement
  193. Wheel Bearing installation - help....
  194. Remeber where those vac lines go.....
  195. E Codes on my 4.5 HELP
  196. E39 and E48 codes could I get some advice?
  197. Can anything go wrong/Flushing coolant?
  198. Another way to pull codes?
  199. Camshaft lifter questions
  200. exhaust manifold
  201. 4.5L ECM inputs
  202. Why I hate NTK Oxy Sensors from Now ON.
  203. Coolant pellets/conditoner
  204. Prob with 86 deville sedan with 4.9L *HELP*
  205. Ported vacuum switch--supposed to have a wire connected to it?
  206. 4.9L Aluminum Head project?
  207. Stoneage_caddy I had my car's fuel preasure checked today,have a couple of questions
  208. Anyone running an Auto meter Air/Fuel Ratio meter.
  209. What O2 sensor(s) are you using.
  210. antifreeze for my 85 fleetwoods ht4100
  211. Antifreeze for my HT4100
  212. 1989 Eldorado Biarritz MPG
  213. 1991 deville engine dies when coasting
  214. The Homemade 5 Liter PFI Project .....
  215. 85 seville valve lifters
  216. Blown 4.1 ht in 83 eldorado ?? how to tell ?
  217. Bogging problem
  218. Throttle body problem, help please
  219. I knew I saw it someplace, now where did it go, no not my sanity but close?
  220. 4.5......which sensor is bad?
  221. 4.9 bearing part number or TSB?
  222. Help with HT4100 water pump
  223. which is the better motor
  224. Nitrous Question
  225. 1995 DeVille Idle Fluctuation
  226. issues w/ back pressure?!?
  227. Well the pump is on, but my serpentine belt...what?
  228. 83 Sedan Deville 4100
  229. Its an Invasion 4.9, 5spd Stick Fiero
  230. why I love my 4.5...
  231. 1985 deville coolant and heater core questions.
  232. New member here, and I need some '93 Deville help (water pump installation)
  233. 1990 Allante Bosch fuel injectors/FiveOMotorsports
  234. Cleaning '90 EGR 4.5
  235. Groll Polluter FIXED??????????????????
  236. Where does this fuel line run?
  237. 88 Deville.Tensioner Pulley.
  238. 85 4100 is running rough and hesitating
  239. car will not go past 35mph 82 with a 4.1
  240. Does anyone have a picture or info on the Negative block ground?
  241. EGR Cleaning
  242. Cheap quality Rebuilt transmissions
  243. 4.5 Fast Idle problem
  244. I need a no Yo-Yo shift-kit immediately!! '84 RWD DeVille
  245. 93 Runs rough & loud when wet
  246. Spark Plug Replacement
  247. Fuel Injector Compatiblity
  248. Oil pan gasket
  249. No Spark/ No Start Problem/ Pulling what hair I have left out!
  250. oil change