: HT4100 4.1, 4.5, 4.9



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