: HT4100 4.1, 4.5, 4.9



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  1. Cold air zapping coil!
  2. Error code 29
  3. Replaced everything...stumble is worse.
  4. 1984 Eldo 4.1 Engine Color Needed
  5. frontend noise
  6. Fastchip - Does it work?
  7. Does everyone have mandrel-bent piping?
  8. What is the Factory Timing for a 93 Eldorado
  9. I want a DIC (get your mind out of the gutter) :D
  10. 4.9 in Brougham??
  11. engine change
  12. Ram Air/Cold air intake for 4.9?
  13. Underdrive pulleys?
  14. Braking Engine Jump... 1990 DeVille
  15. engine miss 4.5 ???
  16. '90 DeVille ISC motor problem SOLVED
  17. 94 Deville misses backfires & DIES! whats wrong
  18. Fuel injector problem?
  19. Can't get my 4.9 to Adjust timing
  20. Valve Lash Adjustment
  21. 95 4.9 flywheel breakage?
  22. Fuel Pump Relay
  23. Not getting enough spark
  24. Not again!!
  25. Oxygen Sensor
  26. 4.9L Fuel Economy
  27. HT 4100 - Success stories
  28. Gurgling Sound In Engine?
  29. Second generation HT4100
  30. 1984 Fleetwood Code 52 ECM memory reset problem
  31. 84 Eldorado No Start
  32. engine rev's and dies
  33. Engine revs when I turn the wheel????????
  34. throddle control
  35. something happened today with the 90 deville and i don't know what
  36. unique problem 4.9
  37. Stoneys Main Bearing Diary
  38. nees help fast please
  39. 4.9 timing is hard! Idles rough, stumble on acceleration
  40. Water Pump Leakage!!!
  41. Min air ????
  42. Help with a water pump installation!!
  43. How to replace water pump on 92 seville?
  44. Another TPS ?????
  45. 87 Deville 4.1- No fuel!!!!!
  46. horsepower for 4.9
  47. A question for the gurus
  48. Trans cooler leak!
  49. 1990 Cadillac Sedan Deville high idle
  50. new oils verses old oils
  51. Minimum IDLE SCREW adjustment
  52. Oil cooler line o-ring
  53. Is my ISC motor shot? ('90 4.5L)
  54. Help with identifying a GM Goodwrench replacement block.
  55. Where is the MAP sensor located ???? 84 Seville
  56. 89 Deville engine pinging under load when warm
  57. new isc and tps
  58. Code Triggered: E66
  59. Low oil pressure at idle
  60. 4.x starter interchange list
  61. 4.9 91' coupe suspension level
  62. 4100 timing question
  63. Where do these fuel lines run??
  64. 1990 Sedan Deville 4.5L A Few Questions
  65. Uneven idle
  66. Teardown set for friday ...
  67. Ac Compressor
  68. Is this repair worth it?
  69. How Hot is too hot, Ouchi Hottie story inside.
  70. 89 cadillac 4.5 oxygen sensors
  71. Bore spacing
  72. 87 Deville NO FUEL!!!!
  73. FWD HT4100 air pump pupose?
  74. pinhole in block, leaks coolant, what should I do?
  75. 4.9 Just started running rough at idle
  76. Repair cost too high?
  77. 1990 Cadillac Sedan DeVille - Idling Too High
  78. HT4100 valve train pics
  79. Thermosat Question
  80. Am I stuck having to use an 80 series muffler?
  81. Strange COOLANT SENSOR readings--And engine cuts out while driving!!!
  82. water pump
  83. Oil Pan Gasket replacement on a 4.5L
  84. Error Code E41 Camshaft Position Sensor
  85. 4.9 starter problems
  86. 94 deville runs rough at cold start
  87. So Even After $700 dollars it still leaks!
  88. Swap ?'s
  89. Emission test failure
  90. How do I get my 4.5L to coast down to the "70 mpg" benchmark?
  91. A question about the Rotella Motor Oil
  92. Pls Help 4.9 ac compressor froze
  93. Deville shakes violently .. Please help!
  94. 1993 Deville ODB Codes Tripped, Idle Motor
  95. EGR valve replacement fixed the knocking problem!
  96. water pump leaking after i change it
  97. How to enter override E.5.3 on a '90 DeVille
  98. Hose question & error code 30 and 34
  99. 87 Deville Intake
  100. 4.9 intake manifold
  101. Feels like mis-fire. 85 fleetwood 4.1
  102. Engine replacement on an 88 Coupe
  103. fuel pump?????
  104. wot's and front oil seal
  105. oil pan gaskets
  106. emissions failed
  107. Crossover pipe
  108. I got into my diagnostics w/o a clue
  109. Code P039 Current?
  110. error code
  111. Pump thingy :/ 4.1 HT
  112. Programers???
  113. first service on my 89 deville
  114. stumbling, hesitation under load only
  115. 4.9 acceleration? ? ?
  116. Head or Intake?
  117. Are 1990 Throttle bodies obsolete?
  118. 91 DeVille Stalls Repeatedly
  119. Engine Soon EGR code
  120. Motor mounts/CV Joint
  121. Motor mounts/CV Joint
  122. Motor mounts/CV Joint
  123. Deville Acclerating
  124. need help
  125. i need help
  126. 4.5 to 4.9?
  127. HT4100 MSD IGNITON, should I ?
  128. Cooling Pipe Crack
  129. HT4100 Question
  130. 4.9l bolt on mods??
  131. I hate this car.
  132. Stumbling, hesitation, backfiring 89 Deville 4.5
  133. Distributor cap wiring help!!! 4.5 litre 89 deville
  134. HT4100 vacuum pump
  135. Yet another head gasket question
  136. Fuel injection question
  137. Fuel tank baffles or pump?
  138. 88 Coupe Deville Intake Manifold or Head gasket
  139. Help required !!
  140. Crazy Cadillacs
  141. This is a weird one
  142. Ok Guys, So what parts break? Engine Wise.
  143. 91 deville runs a little hot
  144. Fuel Pump Revisited
  145. 4.9 knocking
  146. WTF? Why won't this thing just blow up...
  147. 95 deville idle problem...2
  148. Deville 4.1 fwd rear main oil seal leak :(
  149. water pumps
  150. Nasty squeal - water pump?
  151. what EXACTLY do I need...?!
  152. 1988 Cadillac Coupe Deville Head Gasket
  153. Thermostat housing torque specs
  154. Engine compartment revisions!
  155. 1990 fleetwood engine miss please help
  156. I think I need a distributor 89 Deville 4.5
  157. A blog for Caddy fans
  158. MGB 4.5 project
  159. E52 code
  160. spark wires cover - removal help
  161. 1990 deville 4.5 won't even turn over
  162. water pump replacement
  163. Wheel Bearing installation - help....
  164. Remeber where those vac lines go.....
  165. E Codes on my 4.5 HELP
  166. E39 and E48 codes could I get some advice?
  167. Can anything go wrong/Flushing coolant?
  168. Another way to pull codes?
  169. Camshaft lifter questions
  170. exhaust manifold
  171. 4.5L ECM inputs
  172. Why I hate NTK Oxy Sensors from Now ON.
  173. Coolant pellets/conditoner
  174. Prob with 86 deville sedan with 4.9L *HELP*
  175. Ported vacuum switch--supposed to have a wire connected to it?
  176. 4.9L Aluminum Head project?
  177. Stoneage_caddy I had my car's fuel preasure checked today,have a couple of questions
  178. Anyone running an Auto meter Air/Fuel Ratio meter.
  179. What O2 sensor(s) are you using.
  180. antifreeze for my 85 fleetwoods ht4100
  181. Antifreeze for my HT4100
  182. 1989 Eldorado Biarritz MPG
  183. 1991 deville engine dies when coasting
  184. The Homemade 5 Liter PFI Project .....
  185. 85 seville valve lifters
  186. Blown 4.1 ht in 83 eldorado ?? how to tell ?
  187. Bogging problem
  188. Throttle body problem, help please
  189. I knew I saw it someplace, now where did it go, no not my sanity but close?
  190. 4.5......which sensor is bad?
  191. 4.9 bearing part number or TSB?
  192. Help with HT4100 water pump
  193. which is the better motor
  194. Nitrous Question
  195. 1995 DeVille Idle Fluctuation
  196. issues w/ back pressure?!?
  197. Well the pump is on, but my serpentine belt...what?
  198. 83 Sedan Deville 4100
  199. Its an Invasion 4.9, 5spd Stick Fiero
  200. why I love my 4.5...
  201. 1985 deville coolant and heater core questions.
  202. New member here, and I need some '93 Deville help (water pump installation)
  203. 1990 Allante Bosch fuel injectors/FiveOMotorsports
  204. Cleaning '90 EGR 4.5
  205. Groll Polluter FIXED??????????????????
  206. Where does this fuel line run?
  207. 88 Deville.Tensioner Pulley.
  208. 85 4100 is running rough and hesitating
  209. car will not go past 35mph 82 with a 4.1
  210. Does anyone have a picture or info on the Negative block ground?
  211. EGR Cleaning
  212. Cheap quality Rebuilt transmissions
  213. 4.5 Fast Idle problem
  214. I need a no Yo-Yo shift-kit immediately!! '84 RWD DeVille
  215. 93 Runs rough & loud when wet
  216. Spark Plug Replacement
  217. Fuel Injector Compatiblity
  218. Oil pan gasket
  219. No Spark/ No Start Problem/ Pulling what hair I have left out!
  220. oil change
  221. Accel fuel injectors
  222. Alldata (autozone)????????????????????
  223. A/C Compressor
  224. Help ECM E85
  225. Fuel Pumps on '82-85 HT4100 -- Life span??
  226. Analyzing Fuel Economy
  227. Difference between '82 vs '85 Fuel Injectors on the HT4100????
  228. Oil Theories
  229. Got Injectors? 4.9/4.5
  230. E048
  231. Why Wont This Car Start After I Put In A New Alternator.
  232. '85 Throttle Body in an 82 Eldo???
  233. 4.9 knocking
  234. Hole In Muffler(Recommended Replacement)
  235. 91 DeVille
  236. In reguard to my deville's rough idleing,could it just need an induction service?
  237. Code question.
  238. Plugs for 4.9
  239. 1994 Deville 4.9 (Serpentine Belt) - Save Me From the Junk Yard
  240. Inaccurate gas readout?
  241. 1990 Allante fuel injectors
  242. 4.9 with sleeves?
  243. 4.9 Air Cleaner
  244. Stoneage_caddy my deville is stuttering when idleing,any ideas?
  245. 92 4.9 fleetwood high idle
  246. 1994 4.9L won't pass emissions HCs too high How to fix?
  247. HELLO - I'm seeing an error code 52 - any idea what that means?
  248. 4100 Reliability
  249. 1982 eldorado low oiil pressure light on immediately after oil change??
  250. 82 deville VIBE SOLVED