: HT4100 4.1, 4.5, 4.9



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  1. Need help asap.I have a draeded p093, is my trans gone?
  2. Some people just don't want to listen
  3. 92 Deville Rough Idle Periodic Stallin
  4. (3 4.9 bad mpg.Can low ac refrigerint cause this?
  5. Need a good write up for cleaning Tb and EGR valve please (4.9)
  6. WOT with a high mileage 4.9?
  7. Is my transmission fluid ok or do I need to change it out?
  8. 4T60E transmission problem??
  9. Messed up my transmission
  10. Simple question, what does the HT stand for
  11. Emmissions Testing and the 4.9 and BC Canada guys in here
  12. Knocking
  13. Knock sensor on HT4100?
  14. Cold air zapping coil!
  15. Error code 29
  16. Replaced everything...stumble is worse.
  17. 1984 Eldo 4.1 Engine Color Needed
  18. frontend noise
  19. Fastchip - Does it work?
  20. Does everyone have mandrel-bent piping?
  21. What is the Factory Timing for a 93 Eldorado
  22. I want a DIC (get your mind out of the gutter) :D
  23. 4.9 in Brougham??
  24. engine change
  25. Ram Air/Cold air intake for 4.9?
  26. Underdrive pulleys?
  27. Braking Engine Jump... 1990 DeVille
  28. engine miss 4.5 ???
  29. '90 DeVille ISC motor problem SOLVED
  30. 94 Deville misses backfires & DIES! whats wrong
  31. Fuel injector problem?
  32. Can't get my 4.9 to Adjust timing
  33. Valve Lash Adjustment
  34. 95 4.9 flywheel breakage?
  35. Fuel Pump Relay
  36. Not getting enough spark
  37. Not again!!
  38. Oxygen Sensor
  39. 4.9L Fuel Economy
  40. HT 4100 - Success stories
  41. Gurgling Sound In Engine?
  42. Second generation HT4100
  43. 1984 Fleetwood Code 52 ECM memory reset problem
  44. 84 Eldorado No Start
  45. engine rev's and dies
  46. Engine revs when I turn the wheel????????
  47. throddle control
  48. something happened today with the 90 deville and i don't know what
  49. unique problem 4.9
  50. Stoneys Main Bearing Diary
  51. nees help fast please
  52. 4.9 timing is hard! Idles rough, stumble on acceleration
  53. Water Pump Leakage!!!
  54. Min air ????
  55. Help with a water pump installation!!
  56. How to replace water pump on 92 seville?
  57. Another TPS ?????
  58. 87 Deville 4.1- No fuel!!!!!
  59. horsepower for 4.9
  60. A question for the gurus
  61. Trans cooler leak!
  62. 1990 Cadillac Sedan Deville high idle
  63. new oils verses old oils
  64. Minimum IDLE SCREW adjustment
  65. Oil cooler line o-ring
  66. Is my ISC motor shot? ('90 4.5L)
  67. Help with identifying a GM Goodwrench replacement block.
  68. Where is the MAP sensor located ???? 84 Seville
  69. 89 Deville engine pinging under load when warm
  70. new isc and tps
  71. Code Triggered: E66
  72. Low oil pressure at idle
  73. 4.x starter interchange list
  74. 4.9 91' coupe suspension level
  75. 4100 timing question
  76. Where do these fuel lines run??
  77. 1990 Sedan Deville 4.5L A Few Questions
  78. Uneven idle
  79. Teardown set for friday ...
  80. Ac Compressor
  81. Is this repair worth it?
  82. How Hot is too hot, Ouchi Hottie story inside.
  83. 89 cadillac 4.5 oxygen sensors
  84. Bore spacing
  85. 87 Deville NO FUEL!!!!
  86. FWD HT4100 air pump pupose?
  87. pinhole in block, leaks coolant, what should I do?
  88. 4.9 Just started running rough at idle
  89. Repair cost too high?
  90. 1990 Cadillac Sedan DeVille - Idling Too High
  91. HT4100 valve train pics
  92. Thermosat Question
  93. Am I stuck having to use an 80 series muffler?
  94. Strange COOLANT SENSOR readings--And engine cuts out while driving!!!
  95. water pump
  96. Oil Pan Gasket replacement on a 4.5L
  97. Error Code E41 Camshaft Position Sensor
  98. 4.9 starter problems
  99. 94 deville runs rough at cold start
  100. So Even After $700 dollars it still leaks!
  101. Swap ?'s
  102. Emission test failure
  103. How do I get my 4.5L to coast down to the "70 mpg" benchmark?
  104. A question about the Rotella Motor Oil
  105. Pls Help 4.9 ac compressor froze
  106. Deville shakes violently .. Please help!
  107. 1993 Deville ODB Codes Tripped, Idle Motor
  108. EGR valve replacement fixed the knocking problem!
  109. water pump leaking after i change it
  110. How to enter override E.5.3 on a '90 DeVille
  111. Hose question & error code 30 and 34
  112. 87 Deville Intake
  113. 4.9 intake manifold
  114. Feels like mis-fire. 85 fleetwood 4.1
  115. Engine replacement on an 88 Coupe
  116. fuel pump?????
  117. wot's and front oil seal
  118. oil pan gaskets
  119. emissions failed
  120. Crossover pipe
  121. I got into my diagnostics w/o a clue
  122. Code P039 Current?
  123. error code
  124. Pump thingy :/ 4.1 HT
  125. Programers???
  126. first service on my 89 deville
  127. stumbling, hesitation under load only
  128. 4.9 acceleration? ? ?
  129. Head or Intake?
  130. Are 1990 Throttle bodies obsolete?
  131. 91 DeVille Stalls Repeatedly
  132. Engine Soon EGR code
  133. Motor mounts/CV Joint
  134. Motor mounts/CV Joint
  135. Motor mounts/CV Joint
  136. Deville Acclerating
  137. need help
  138. i need help
  139. 4.5 to 4.9?
  140. HT4100 MSD IGNITON, should I ?
  141. Cooling Pipe Crack
  142. HT4100 Question
  143. 4.9l bolt on mods??
  144. I hate this car.
  145. Stumbling, hesitation, backfiring 89 Deville 4.5
  146. Distributor cap wiring help!!! 4.5 litre 89 deville
  147. HT4100 vacuum pump
  148. Yet another head gasket question
  149. Fuel injection question
  150. Fuel tank baffles or pump?
  151. 88 Coupe Deville Intake Manifold or Head gasket
  152. Help required !!
  153. Crazy Cadillacs
  154. This is a weird one
  155. Ok Guys, So what parts break? Engine Wise.
  156. 91 deville runs a little hot
  157. Fuel Pump Revisited
  158. 4.9 knocking
  159. WTF? Why won't this thing just blow up...
  160. 95 deville idle problem...2
  161. Deville 4.1 fwd rear main oil seal leak :(
  162. water pumps
  163. Nasty squeal - water pump?
  164. what EXACTLY do I need...?!
  165. 1988 Cadillac Coupe Deville Head Gasket
  166. Thermostat housing torque specs
  167. Engine compartment revisions!
  168. 1990 fleetwood engine miss please help
  169. I think I need a distributor 89 Deville 4.5
  170. A blog for Caddy fans
  171. MGB 4.5 project
  172. E52 code
  173. spark wires cover - removal help
  174. 1990 deville 4.5 won't even turn over
  175. water pump replacement
  176. Wheel Bearing installation - help....
  177. Remeber where those vac lines go.....
  178. E Codes on my 4.5 HELP
  179. E39 and E48 codes could I get some advice?
  180. Can anything go wrong/Flushing coolant?
  181. Another way to pull codes?
  182. Camshaft lifter questions
  183. exhaust manifold
  184. 4.5L ECM inputs
  185. Why I hate NTK Oxy Sensors from Now ON.
  186. Coolant pellets/conditoner
  187. Prob with 86 deville sedan with 4.9L *HELP*
  188. Ported vacuum switch--supposed to have a wire connected to it?
  189. 4.9L Aluminum Head project?
  190. Stoneage_caddy I had my car's fuel preasure checked today,have a couple of questions
  191. Anyone running an Auto meter Air/Fuel Ratio meter.
  192. What O2 sensor(s) are you using.
  193. antifreeze for my 85 fleetwoods ht4100
  194. Antifreeze for my HT4100
  195. 1989 Eldorado Biarritz MPG
  196. 1991 deville engine dies when coasting
  197. The Homemade 5 Liter PFI Project .....
  198. 85 seville valve lifters
  199. Blown 4.1 ht in 83 eldorado ?? how to tell ?
  200. Bogging problem
  201. Throttle body problem, help please
  202. I knew I saw it someplace, now where did it go, no not my sanity but close?
  203. 4.5......which sensor is bad?
  204. 4.9 bearing part number or TSB?
  205. Help with HT4100 water pump
  206. which is the better motor
  207. Nitrous Question
  208. 1995 DeVille Idle Fluctuation
  209. issues w/ back pressure?!?
  210. Well the pump is on, but my serpentine belt...what?
  211. 83 Sedan Deville 4100
  212. Its an Invasion 4.9, 5spd Stick Fiero
  213. why I love my 4.5...
  214. 1985 deville coolant and heater core questions.
  215. New member here, and I need some '93 Deville help (water pump installation)
  216. 1990 Allante Bosch fuel injectors/FiveOMotorsports
  217. Cleaning '90 EGR 4.5
  218. Groll Polluter FIXED??????????????????
  219. Where does this fuel line run?
  220. 88 Deville.Tensioner Pulley.
  221. 85 4100 is running rough and hesitating
  222. car will not go past 35mph 82 with a 4.1
  223. Does anyone have a picture or info on the Negative block ground?
  224. EGR Cleaning
  225. Cheap quality Rebuilt transmissions
  226. 4.5 Fast Idle problem
  227. I need a no Yo-Yo shift-kit immediately!! '84 RWD DeVille
  228. 93 Runs rough & loud when wet
  229. Spark Plug Replacement
  230. Fuel Injector Compatiblity
  231. Oil pan gasket
  232. No Spark/ No Start Problem/ Pulling what hair I have left out!
  233. oil change
  234. Accel fuel injectors
  235. Alldata (autozone)????????????????????
  236. A/C Compressor
  237. Help ECM E85
  238. Fuel Pumps on '82-85 HT4100 -- Life span??
  239. Analyzing Fuel Economy
  240. Difference between '82 vs '85 Fuel Injectors on the HT4100????
  241. Oil Theories
  242. Got Injectors? 4.9/4.5
  243. E048
  244. Why Wont This Car Start After I Put In A New Alternator.
  245. '85 Throttle Body in an 82 Eldo???
  246. 4.9 knocking
  247. Hole In Muffler(Recommended Replacement)
  248. 91 DeVille
  249. In reguard to my deville's rough idleing,could it just need an induction service?
  250. Code question.