: HT4100 4.1, 4.5, 4.9



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