: HT4100 4.1, 4.5, 4.9



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  1. 88 DeVille Serpentine Belt
  2. Noise in Transmission?
  3. Coolant Leak - How to find?
  4. Good care (ATF) for 4T60E
  5. 1994 Deville 4.9 fuel pressure
  6. Please help an old man. (Backfiring voodoo fleetwood)
  7. Please Help! 4.9 won't shift out of second gear.
  8. Tranny problems engaging
  9. 89 deville 4.5 tranny in 93 seville 4.9 will it work?
  10. Need help asap.I have a draeded p093, is my trans gone?
  11. Some people just don't want to listen
  12. 92 Deville Rough Idle Periodic Stallin
  13. (3 4.9 bad mpg.Can low ac refrigerint cause this?
  14. Need a good write up for cleaning Tb and EGR valve please (4.9)
  15. WOT with a high mileage 4.9?
  16. Is my transmission fluid ok or do I need to change it out?
  17. 4T60E transmission problem??
  18. Messed up my transmission
  19. Simple question, what does the HT stand for
  20. Emmissions Testing and the 4.9 and BC Canada guys in here
  21. Knocking
  22. Knock sensor on HT4100?
  23. Cold air zapping coil!
  24. Error code 29
  25. Replaced everything...stumble is worse.
  26. 1984 Eldo 4.1 Engine Color Needed
  27. frontend noise
  28. Fastchip - Does it work?
  29. Does everyone have mandrel-bent piping?
  30. What is the Factory Timing for a 93 Eldorado
  31. I want a DIC (get your mind out of the gutter) :D
  32. 4.9 in Brougham??
  33. engine change
  34. Ram Air/Cold air intake for 4.9?
  35. Underdrive pulleys?
  36. Braking Engine Jump... 1990 DeVille
  37. engine miss 4.5 ???
  38. '90 DeVille ISC motor problem SOLVED
  39. 94 Deville misses backfires & DIES! whats wrong
  40. Fuel injector problem?
  41. Can't get my 4.9 to Adjust timing
  42. Valve Lash Adjustment
  43. 95 4.9 flywheel breakage?
  44. Fuel Pump Relay
  45. Not getting enough spark
  46. Not again!!
  47. Oxygen Sensor
  48. 4.9L Fuel Economy
  49. HT 4100 - Success stories
  50. Gurgling Sound In Engine?
  51. Second generation HT4100
  52. 1984 Fleetwood Code 52 ECM memory reset problem
  53. 84 Eldorado No Start
  54. engine rev's and dies
  55. Engine revs when I turn the wheel????????
  56. throddle control
  57. something happened today with the 90 deville and i don't know what
  58. unique problem 4.9
  59. Stoneys Main Bearing Diary
  60. nees help fast please
  61. 4.9 timing is hard! Idles rough, stumble on acceleration
  62. Water Pump Leakage!!!
  63. Min air ????
  64. Help with a water pump installation!!
  65. How to replace water pump on 92 seville?
  66. Another TPS ?????
  67. 87 Deville 4.1- No fuel!!!!!
  68. horsepower for 4.9
  69. A question for the gurus
  70. Trans cooler leak!
  71. 1990 Cadillac Sedan Deville high idle
  72. new oils verses old oils
  73. Minimum IDLE SCREW adjustment
  74. Oil cooler line o-ring
  75. Is my ISC motor shot? ('90 4.5L)
  76. Help with identifying a GM Goodwrench replacement block.
  77. Where is the MAP sensor located ???? 84 Seville
  78. 89 Deville engine pinging under load when warm
  79. new isc and tps
  80. Code Triggered: E66
  81. Low oil pressure at idle
  82. 4.x starter interchange list
  83. 4.9 91' coupe suspension level
  84. 4100 timing question
  85. Where do these fuel lines run??
  86. 1990 Sedan Deville 4.5L A Few Questions
  87. Uneven idle
  88. Teardown set for friday ...
  89. Ac Compressor
  90. Is this repair worth it?
  91. How Hot is too hot, Ouchi Hottie story inside.
  92. 89 cadillac 4.5 oxygen sensors
  93. Bore spacing
  94. 87 Deville NO FUEL!!!!
  95. FWD HT4100 air pump pupose?
  96. pinhole in block, leaks coolant, what should I do?
  97. 4.9 Just started running rough at idle
  98. Repair cost too high?
  99. 1990 Cadillac Sedan DeVille - Idling Too High
  100. HT4100 valve train pics
  101. Thermosat Question
  102. Am I stuck having to use an 80 series muffler?
  103. Strange COOLANT SENSOR readings--And engine cuts out while driving!!!
  104. water pump
  105. Oil Pan Gasket replacement on a 4.5L
  106. Error Code E41 Camshaft Position Sensor
  107. 4.9 starter problems
  108. 94 deville runs rough at cold start
  109. So Even After $700 dollars it still leaks!
  110. Swap ?'s
  111. Emission test failure
  112. How do I get my 4.5L to coast down to the "70 mpg" benchmark?
  113. A question about the Rotella Motor Oil
  114. Pls Help 4.9 ac compressor froze
  115. Deville shakes violently .. Please help!
  116. 1993 Deville ODB Codes Tripped, Idle Motor
  117. EGR valve replacement fixed the knocking problem!
  118. water pump leaking after i change it
  119. How to enter override E.5.3 on a '90 DeVille
  120. Hose question & error code 30 and 34
  121. 87 Deville Intake
  122. 4.9 intake manifold
  123. Feels like mis-fire. 85 fleetwood 4.1
  124. Engine replacement on an 88 Coupe
  125. fuel pump?????
  126. wot's and front oil seal
  127. oil pan gaskets
  128. emissions failed
  129. Crossover pipe
  130. I got into my diagnostics w/o a clue
  131. Code P039 Current?
  132. error code
  133. Pump thingy :/ 4.1 HT
  134. Programers???
  135. first service on my 89 deville
  136. stumbling, hesitation under load only
  137. 4.9 acceleration? ? ?
  138. Head or Intake?
  139. Are 1990 Throttle bodies obsolete?
  140. 91 DeVille Stalls Repeatedly
  141. Engine Soon EGR code
  142. Motor mounts/CV Joint
  143. Motor mounts/CV Joint
  144. Motor mounts/CV Joint
  145. Deville Acclerating
  146. need help
  147. i need help
  148. 4.5 to 4.9?
  149. HT4100 MSD IGNITON, should I ?
  150. Cooling Pipe Crack
  151. HT4100 Question
  152. 4.9l bolt on mods??
  153. I hate this car.
  154. Stumbling, hesitation, backfiring 89 Deville 4.5
  155. Distributor cap wiring help!!! 4.5 litre 89 deville
  156. HT4100 vacuum pump
  157. Yet another head gasket question
  158. Fuel injection question
  159. Fuel tank baffles or pump?
  160. 88 Coupe Deville Intake Manifold or Head gasket
  161. Help required !!
  162. Crazy Cadillacs
  163. This is a weird one
  164. Ok Guys, So what parts break? Engine Wise.
  165. 91 deville runs a little hot
  166. Fuel Pump Revisited
  167. 4.9 knocking
  168. WTF? Why won't this thing just blow up...
  169. 95 deville idle problem...2
  170. Deville 4.1 fwd rear main oil seal leak :(
  171. water pumps
  172. Nasty squeal - water pump?
  173. what EXACTLY do I need...?!
  174. 1988 Cadillac Coupe Deville Head Gasket
  175. Thermostat housing torque specs
  176. Engine compartment revisions!
  177. 1990 fleetwood engine miss please help
  178. I think I need a distributor 89 Deville 4.5
  179. A blog for Caddy fans
  180. MGB 4.5 project
  181. E52 code
  182. spark wires cover - removal help
  183. 1990 deville 4.5 won't even turn over
  184. water pump replacement
  185. Wheel Bearing installation - help....
  186. Remeber where those vac lines go.....
  187. E Codes on my 4.5 HELP
  188. E39 and E48 codes could I get some advice?
  189. Can anything go wrong/Flushing coolant?
  190. Another way to pull codes?
  191. Camshaft lifter questions
  192. exhaust manifold
  193. 4.5L ECM inputs
  194. Why I hate NTK Oxy Sensors from Now ON.
  195. Coolant pellets/conditoner
  196. Prob with 86 deville sedan with 4.9L *HELP*
  197. Ported vacuum switch--supposed to have a wire connected to it?
  198. 4.9L Aluminum Head project?
  199. Stoneage_caddy I had my car's fuel preasure checked today,have a couple of questions
  200. Anyone running an Auto meter Air/Fuel Ratio meter.
  201. What O2 sensor(s) are you using.
  202. antifreeze for my 85 fleetwoods ht4100
  203. Antifreeze for my HT4100
  204. 1989 Eldorado Biarritz MPG
  205. 1991 deville engine dies when coasting
  206. The Homemade 5 Liter PFI Project .....
  207. 85 seville valve lifters
  208. Blown 4.1 ht in 83 eldorado ?? how to tell ?
  209. Bogging problem
  210. Throttle body problem, help please
  211. I knew I saw it someplace, now where did it go, no not my sanity but close?
  212. 4.5......which sensor is bad?
  213. 4.9 bearing part number or TSB?
  214. Help with HT4100 water pump
  215. which is the better motor
  216. Nitrous Question
  217. 1995 DeVille Idle Fluctuation
  218. issues w/ back pressure?!?
  219. Well the pump is on, but my serpentine belt...what?
  220. 83 Sedan Deville 4100
  221. Its an Invasion 4.9, 5spd Stick Fiero
  222. why I love my 4.5...
  223. 1985 deville coolant and heater core questions.
  224. New member here, and I need some '93 Deville help (water pump installation)
  225. 1990 Allante Bosch fuel injectors/FiveOMotorsports
  226. Cleaning '90 EGR 4.5
  227. Groll Polluter FIXED??????????????????
  228. Where does this fuel line run?
  229. 88 Deville.Tensioner Pulley.
  230. 85 4100 is running rough and hesitating
  231. car will not go past 35mph 82 with a 4.1
  232. Does anyone have a picture or info on the Negative block ground?
  233. EGR Cleaning
  234. Cheap quality Rebuilt transmissions
  235. 4.5 Fast Idle problem
  236. I need a no Yo-Yo shift-kit immediately!! '84 RWD DeVille
  237. 93 Runs rough & loud when wet
  238. Spark Plug Replacement
  239. Fuel Injector Compatiblity
  240. Oil pan gasket
  241. No Spark/ No Start Problem/ Pulling what hair I have left out!
  242. oil change
  243. Accel fuel injectors
  244. Alldata (autozone)????????????????????
  245. A/C Compressor
  246. Help ECM E85
  247. Fuel Pumps on '82-85 HT4100 -- Life span??
  248. Analyzing Fuel Economy
  249. Difference between '82 vs '85 Fuel Injectors on the HT4100????
  250. Oil Theories