: HT4100 4.1, 4.5, 4.9



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  1. whats the diffrence?
  2. Help with cold stalling problem
  3. Misfire and absent fuel
  4. Timing 4.1L How to loosen dist???
  5. Tranny fluid frustration
  6. rough idle and bad miss
  7. Engine paranoia
  8. What are the pro's and con's of upgradeing your ignition system on a 4.9?
  9. remove fuel rail to change fpr on 4.9
  10. EGR Valve Location
  11. A question of exhaust theory...
  12. ecm data
  13. Fuel Injector Ripoff...
  14. Diagnostic code ?/EGR Valve
  15. '85 Deville, HT4100, considerable problems running properly...seeking help
  16. Looking For More Power From My 4.1
  17. Serpentine Belt Diagram 4100
  18. OBDI vs OBDII; AC compressor
  19. idle problem
  20. 4.9 distributor bushing wear
  21. What should I do to fix my bad gas mialage (really bad)
  22. Does the fpr have to leak to be bad?
  23. What is this sensor on the back of my 4.9 motor?
  24. Need help on alighning PRNDL switch.
  25. P/N for gaskets
  26. 88 Eldorado wont start
  27. prndl code
  28. E046 message
  29. PCV pipe???
  30. 10 mpg city and its not even like a city.Can it be my fpr.
  31. car throwing codes, decypher them please :D
  32. Fuel Pressure 92 Deville
  33. performance ??? ht4100
  34. ht4100 ?????
  35. Breather on 4T60E, is there and if so where is it?
  36. 1990 deville low reading
  37. 1990 deville vacuum
  38. Throttle body gasket?
  39. 90 Deville ignition wire, cap, rotor
  40. 91 deville stumbles after warming up
  41. 83 cadillac 4.1
  42. Timing Chain
  43. Discussion about caddeville's project (split from 4.9 into 88 Eldorado)
  44. Why Wont It Start?!!!
  45. 4.9 into 88 eldorado
  46. 83'Eldorado 2 camshafts later and it wont start
  47. Northern Indiana Users?
  48. engine ping,
  49. Speed limiter...
  50. Octane and fuel prices vs performance
  51. Any fresh tips for re-manufactured 4100 seeker?
  52. 4.5 wont start after head gaskets
  53. Advancing timing, need help...
  54. Whistling Sound
  55. Comparing Dexcool and green stuff
  56. My Fuel Injectors :(
  57. Sonofabitch !!!!!!
  58. 4100 emmissions air pump
  59. 1990 deville help
  60. Power improvement... from a carburator?
  61. Sad Caddy's in the background.
  62. Water Pump for 89 DeVille
  63. Heatsoak and Starters. Is this a Caddy problem too or just Cadero's.
  64. ISC motor problem? '94 Deville
  65. 88 DeVille Serpentine Belt
  66. Noise in Transmission?
  67. Coolant Leak - How to find?
  68. Good care (ATF) for 4T60E
  69. 1994 Deville 4.9 fuel pressure
  70. Please help an old man. (Backfiring voodoo fleetwood)
  71. Please Help! 4.9 won't shift out of second gear.
  72. Tranny problems engaging
  73. 89 deville 4.5 tranny in 93 seville 4.9 will it work?
  74. Need help asap.I have a draeded p093, is my trans gone?
  75. Some people just don't want to listen
  76. 92 Deville Rough Idle Periodic Stallin
  77. (3 4.9 bad mpg.Can low ac refrigerint cause this?
  78. Need a good write up for cleaning Tb and EGR valve please (4.9)
  79. WOT with a high mileage 4.9?
  80. Is my transmission fluid ok or do I need to change it out?
  81. 4T60E transmission problem??
  82. Messed up my transmission
  83. Simple question, what does the HT stand for
  84. Emmissions Testing and the 4.9 and BC Canada guys in here
  85. Knocking
  86. Knock sensor on HT4100?
  87. Cold air zapping coil!
  88. Error code 29
  89. Replaced everything...stumble is worse.
  90. 1984 Eldo 4.1 Engine Color Needed
  91. frontend noise
  92. Fastchip - Does it work?
  93. Does everyone have mandrel-bent piping?
  94. What is the Factory Timing for a 93 Eldorado
  95. I want a DIC (get your mind out of the gutter) :D
  96. 4.9 in Brougham??
  97. engine change
  98. Ram Air/Cold air intake for 4.9?
  99. Underdrive pulleys?
  100. Braking Engine Jump... 1990 DeVille
  101. engine miss 4.5 ???
  102. '90 DeVille ISC motor problem SOLVED
  103. 94 Deville misses backfires & DIES! whats wrong
  104. Fuel injector problem?
  105. Can't get my 4.9 to Adjust timing
  106. Valve Lash Adjustment
  107. 95 4.9 flywheel breakage?
  108. Fuel Pump Relay
  109. Not getting enough spark
  110. Not again!!
  111. Oxygen Sensor
  112. 4.9L Fuel Economy
  113. HT 4100 - Success stories
  114. Gurgling Sound In Engine?
  115. Second generation HT4100
  116. 1984 Fleetwood Code 52 ECM memory reset problem
  117. 84 Eldorado No Start
  118. engine rev's and dies
  119. Engine revs when I turn the wheel????????
  120. throddle control
  121. something happened today with the 90 deville and i don't know what
  122. unique problem 4.9
  123. Stoneys Main Bearing Diary
  124. nees help fast please
  125. 4.9 timing is hard! Idles rough, stumble on acceleration
  126. Water Pump Leakage!!!
  127. Min air ????
  128. Help with a water pump installation!!
  129. How to replace water pump on 92 seville?
  130. Another TPS ?????
  131. 87 Deville 4.1- No fuel!!!!!
  132. horsepower for 4.9
  133. A question for the gurus
  134. Trans cooler leak!
  135. 1990 Cadillac Sedan Deville high idle
  136. new oils verses old oils
  137. Minimum IDLE SCREW adjustment
  138. Oil cooler line o-ring
  139. Is my ISC motor shot? ('90 4.5L)
  140. Help with identifying a GM Goodwrench replacement block.
  141. Where is the MAP sensor located ???? 84 Seville
  142. 89 Deville engine pinging under load when warm
  143. new isc and tps
  144. Code Triggered: E66
  145. Low oil pressure at idle
  146. 4.x starter interchange list
  147. 4.9 91' coupe suspension level
  148. 4100 timing question
  149. Where do these fuel lines run??
  150. 1990 Sedan Deville 4.5L A Few Questions
  151. Uneven idle
  152. Teardown set for friday ...
  153. Ac Compressor
  154. Is this repair worth it?
  155. How Hot is too hot, Ouchi Hottie story inside.
  156. 89 cadillac 4.5 oxygen sensors
  157. Bore spacing
  158. 87 Deville NO FUEL!!!!
  159. FWD HT4100 air pump pupose?
  160. pinhole in block, leaks coolant, what should I do?
  161. 4.9 Just started running rough at idle
  162. Repair cost too high?
  163. 1990 Cadillac Sedan DeVille - Idling Too High
  164. HT4100 valve train pics
  165. Thermosat Question
  166. Am I stuck having to use an 80 series muffler?
  167. Strange COOLANT SENSOR readings--And engine cuts out while driving!!!
  168. water pump
  169. Oil Pan Gasket replacement on a 4.5L
  170. Error Code E41 Camshaft Position Sensor
  171. 4.9 starter problems
  172. 94 deville runs rough at cold start
  173. So Even After $700 dollars it still leaks!
  174. Swap ?'s
  175. Emission test failure
  176. How do I get my 4.5L to coast down to the "70 mpg" benchmark?
  177. A question about the Rotella Motor Oil
  178. Pls Help 4.9 ac compressor froze
  179. Deville shakes violently .. Please help!
  180. 1993 Deville ODB Codes Tripped, Idle Motor
  181. EGR valve replacement fixed the knocking problem!
  182. water pump leaking after i change it
  183. How to enter override E.5.3 on a '90 DeVille
  184. Hose question & error code 30 and 34
  185. 87 Deville Intake
  186. 4.9 intake manifold
  187. Feels like mis-fire. 85 fleetwood 4.1
  188. Engine replacement on an 88 Coupe
  189. fuel pump?????
  190. wot's and front oil seal
  191. oil pan gaskets
  192. emissions failed
  193. Crossover pipe
  194. I got into my diagnostics w/o a clue
  195. Code P039 Current?
  196. error code
  197. Pump thingy :/ 4.1 HT
  198. Programers???
  199. first service on my 89 deville
  200. stumbling, hesitation under load only
  201. 4.9 acceleration? ? ?
  202. Head or Intake?
  203. Are 1990 Throttle bodies obsolete?
  204. 91 DeVille Stalls Repeatedly
  205. Engine Soon EGR code
  206. Motor mounts/CV Joint
  207. Motor mounts/CV Joint
  208. Motor mounts/CV Joint
  209. Deville Acclerating
  210. need help
  211. i need help
  212. 4.5 to 4.9?
  213. HT4100 MSD IGNITON, should I ?
  214. Cooling Pipe Crack
  215. HT4100 Question
  216. 4.9l bolt on mods??
  217. I hate this car.
  218. Stumbling, hesitation, backfiring 89 Deville 4.5
  219. Distributor cap wiring help!!! 4.5 litre 89 deville
  220. HT4100 vacuum pump
  221. Yet another head gasket question
  222. Fuel injection question
  223. Fuel tank baffles or pump?
  224. 88 Coupe Deville Intake Manifold or Head gasket
  225. Help required !!
  226. Crazy Cadillacs
  227. This is a weird one
  228. Ok Guys, So what parts break? Engine Wise.
  229. 91 deville runs a little hot
  230. Fuel Pump Revisited
  231. 4.9 knocking
  232. WTF? Why won't this thing just blow up...
  233. 95 deville idle problem...2
  234. Deville 4.1 fwd rear main oil seal leak :(
  235. water pumps
  236. Nasty squeal - water pump?
  237. what EXACTLY do I need...?!
  238. 1988 Cadillac Coupe Deville Head Gasket
  239. Thermostat housing torque specs
  240. Engine compartment revisions!
  241. 1990 fleetwood engine miss please help
  242. I think I need a distributor 89 Deville 4.5
  243. A blog for Caddy fans
  244. MGB 4.5 project
  245. E52 code
  246. spark wires cover - removal help
  247. 1990 deville 4.5 won't even turn over
  248. water pump replacement
  249. Wheel Bearing installation - help....
  250. Remeber where those vac lines go.....