: HT4100 4.1, 4.5, 4.9



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  1. 4.1 Question
  2. 1984 Fleetwood 4.1
  3. Trouble codes?
  4. I need a new throttle body
  5. 4.9 timing chain replacement ?
  6. Popular car... at the junkyard
  7. 4.9 swap
  8. Code E26 and E27
  9. 4100? worth rebuilding
  10. Need help finding power steering bracket
  11. 4.1 dampener pulley bolt
  12. ht4100- stop engine-oil pressure light flickers
  13. "The Cadillac 4.1 liter engine is beyond hope for this formula"
  14. 94 Deville won't start
  15. '94 Deville 4.9l torque conv. clutch prob?
  16. 1986 Eldorado stalls under stress
  17. 4.9's torque
  18. Right the wrongs in a 4.1 (4100)
  19. 4.9 engine
  20. 4.9 liter vanity cover removal.
  21. The Mythical 4.9 performance Chip
  22. 4.5 Liter - Last chance before I need to give it up.
  23. Possible ECM problem
  24. Got mother's 1985 Fleetwood Brougham with HT4100
  25. Member 92 Seville 89 - Old Threads
  26. Water Pump Tasks ahead
  27. wont start cold
  28. egr question
  29. Problem of the day :)
  30. 2002 DTS trouble
  31. 250 or 252?
  32. 4.9 isc adjustment: Thanks Ranger
  33. 4.5 engine swap
  34. Hall Effect
  35. How do you get to the back of the FDC
  36. 4100 RWD replacement source
  37. mechanical water temp guage
  38. deck height and bore spacing
  39. 88 4.5L Running rough
  40. 90 eldo-possible tranny issue and engine issue
  41. Exhaust Muffler
  42. 4.9 litre--flat tappet engine?
  43. 4.1 to 4.5
  44. New to Throttle Body Injection?
  45. Suddenly Won't start, no Spark, 1985 Eldorado
  46. Haynes or Chiltons
  47. 4100 Updated intake gasket set
  48. '93 Eldorado, 4.9L - Partial Fire, No Start
  49. How do you clean 4.5 throttle body?
  50. oil change
  51. Crazy Coolant Temperatures
  52. Mustard like substance in radiator
  53. Help my 91 cadilliac deville 4.9
  54. Two Problems Not Starting and Stalling
  55. 4.9 water pump
  56. Broken Upper Radiator Hose Connector
  57. 1994 Sedan Deville questions...
  58. Piston 6 hits sparkplug - Bad timing
  59. Coupe Deville 4.5 Rough Running
  60. new and need some help please!!!!!
  61. What should I do, buy or walk? 89 Coupe Deville
  62. E20 - Open Fuel Pump Circut Feedback Signal
  63. 4.1 Running Bad Again
  64. 4.5 Allante Intake on a 4.9 Eldorado
  65. heat issues!!!!
  66. Need Help ASAP!!!!!!
  67. Lound thump when shutting off engine, then no restart
  68. 4.9 Oil Filter ??
  69. 4.9 and spark knock
  70. I really need help, please!
  71. will my 4.9 fit?
  72. I'm going to try the 4.1->4.9 conversion
  73. 1986 cadillac Stalling up hills, need help ASAP
  74. Case of the Evil Tranny
  75. Question when torquing headbolts 4.9L
  76. Synthetic oil no no in 4100
  77. New brain wracking symptom...
  78. For those of you with coolant loss issues.
  79. '93 Eldorado, 4.9L - Bad Fuel Pump?
  80. 4.1 Spun a cam bearing,
  81. C bieng displayed
  82. Is this engine rebuildable?
  83. Flowmaster Exhaust for a 4.9 Deville
  84. A/C Compressor Belt Bypass - 89 Deville 4.5
  85. all 4100's interchangable?
  86. car surges badly when stopping
  87. Blown Head gasket
  88. RPO Code of the 90 4.5L V8?
  89. 4.9 stalls
  90. Choke?
  91. New Member Introduction
  92. Allante HT4100
  93. 4100 Book
  94. replacement fuel injectors
  95. how hard is it to drop the oil pan
  96. HT4100 Recommended Oil Viscosity
  97. Tuning for E10 gasoline
  98. 4.9l oil leak
  99. Poor gas mileage/Sensors, please help a bit!
  100. HT4100 PCV valve, location?
  101. Can fuel injector effect the map sensor and how it function
  102. Losing coolant when the heat is turned on.
  103. 4.9L 1995 deville car ran out of gas but wont start
  104. VIDEO of HT4100 WOT
  105. Radiator Drain Plug
  106. 86-87 Seville, Eldorado 4.9L Swap
  107. Water Pump on an '85 fleetwood
  108. engine id
  109. 4.9 firing order???
  110. Won't start when hot (intermittent)
  111. 92 Deville losing power after turning a corner
  112. 76 Eldo 500 FI Problems
  113. swap 4.1 to a 4.5 or 4.9 in 85 Seville?
  114. swap 4.1 to a 4.5 or 49 in 85 Seville?
  115. More HT4100 Tips
  116. engine knock in my 1994 sedan deville 4.9L
  117. Well, i raced 3 cars in one night with my 4.1
  118. No start, at operating temp, Flooding on restart
  119. Help Ecm/PCM Questions
  120. New Addition to the Family--85 Sedan Deville
  121. Code Analyzer
  122. slight hesitation at cold low-gear
  123. HT4100 chosen as one of the worst engines of all time
  124. Valves too far in advance or too far retarded?
  125. 1992 Cadillac STS 4.9L Issues
  126. Decking out my 4.9
  127. '93 Eldorado 4.9L - P012 & P053 Codes
  128. Urgent Help W/engine
  129. Code e048 what's the trigger?
  130. which O2 sensor for 85 DeVille/HT4100
  131. 4.9 Code 41 Saga Continues!!!
  132. 83 fleetwood 4100
  133. Huge Problem HELP !!!
  134. Cam sensor 4.9
  135. 4100 Newbie needs help!
  136. HT4100 "STOP ENGINE-OIL PRESS" light flickering
  137. Interesting 4.9 symptom, need ideas
  138. Help wth tps (Throttle Position Sensor) problem/ Or just removing Throttle Body
  139. Injector Trouble 4.9
  140. Crank pulley wont spin...
  141. She runs!
  142. 84 Seville - low speed hesitation
  143. How long will it last?
  144. 4.5 to 4.9
  145. 85 Seville 4.1 Knocking?
  146. poor gas milage
  147. Outside temp sensor location---4.9 litre.
  148. My Car is Fixed!!! New Camshaft and Lifters
  149. Water pumps...Generally speaking.
  150. NOISEY cold start ups with the pulleys, only to quiet down when warm.
  151. 93 deville 4.9 noisey cold pulleys, quiet when warm. whats going out?
  152. My speedometer is WAY off, and has problems in park
  153. 91 deville Starter enable relay
  154. gas issue
  155. '88 DeVille EXTREME ISC problems
  156. 92 STS - Stalls anywhere but the highway.
  157. 93 Eldawg Stalls while driving but drives great
  158. EGR System Question
  159. 1987 Cadillac Deville No Fuel Preasure Im lost
  160. ECM questions
  161. Bosch 19# Injectors
  162. I Lost First Gear, Car barely moves with throttle!
  163. 83 Deville Performance?
  164. would an oil stabilizer help with burning
  165. OBD1 Codes
  166. HT4100 Brand New
  167. Help! 1983 Seville with HT-4100 FWD, need ideas for a swap-out?
  168. 85 Fleetwood FWD Won't Start! Help!
  169. Any good 4.x mechanics in the Detroit area?
  170. Water Pump Removal
  171. 1985 4.1L Distibutor Drive Gear for oil pump
  172. 6.0L? say what?
  173. '91 4.9 swap into a rear drive application?
  174. 1985 Fleetwood FWD 4.1L hesitation/rough idle/won't start
  175. Possible Transmission Problem when shifting from park
  176. Water Pump - Snapped Bolt
  177. replacing camshaft bearings?
  178. 85 Deville 4.1L Oil problems.
  179. Won't Start After Driving
  180. need help concerning tune up
  181. should I replace the catalytic converter
  182. 1990 deville shifting problem
  183. TBI injectors
  184. Flat cam or bad lifter?
  185. Code E15???????
  186. flickering Service Soon and no codes...
  187. 4.1 Engine: Sensor Above #8 Spark Plug?
  188. how many mods do you all know about?
  189. high output alternator
  190. ISC RPM Out Of Range
  191. Non GM parts=sick Cadillac??
  192. 4.9 Deville Concours driving terrible again!
  193. Torque converter lock up solenoid, Where?
  194. Engine Swap
  195. 85 Eldo HT 4100 ISC/TPS
  196. 4.5 spark plugs
  197. 4100 engine temp??
  198. Weird 4.9l issues
  199. Finally Solved 4.1 Hesitation: Coil & Plug Wires
  200. Need help with 85 Eldo HT4100 Tuneup
  201. 91 Fleetwood injector impedence?
  202. How do I access the internal codes and what are the normal parameters for a '92 4.9?
  203. SERVICE SOON telltale light!!
  204. Cadillac 4.5L PFI and 4.9L PFI IAT?
  205. my 4100--what would you do
  206. Another BIG 4.x Engine Tip--Especially for 4.1 Owners
  207. what is that god awful smell
  208. '92 Deville 4.9 runs great at startup, runs like crap when hot
  209. e44 o2 error
  210. 4.1 Sputters and pops
  211. Tips on swapping HT4100 for 500
  212. Coolant Temp Light = Sensor?
  213. Need Tps Help
  214. 4.9l Starter Connection Problem
  215. 91 Deville 4.9l No Start Issue
  216. 4.9 stalling problem,and allante question
  217. Conflicting torque information
  218. Replaced Water Pump on 89 4.5 Still leaking
  219. 4100 seville engine swap help needed
  220. 4.1 to 4.9.... RWD?
  221. Blower motor not operating
  222. Any great 4.9 mods?
  223. Remanufactured HT4100 - 10K and now oil in radiator/leak
  224. HT4100 Running BAD when warm.
  225. EGR stack tubes?????
  226. HT4100 Backfires
  227. Checked your A.I.R. system filter lately?
  228. 1990 Deville PRNDL problem
  229. 1990 Deville running poorly.
  230. Thanks for the muffler info
  231. Fuel/exhaust smell seems too strong...dangerous?
  232. 4.9ltr Northstar performance?
  233. anyone know how to remove the crankshaft pully 1990 deville 4.5
  234. 1994 Deville Running Rough
  235. What does this code mean?
  236. Fuse Popping on AC Clutch
  237. 93 Seville 4.9 rough idle, slow response, P041 code
  238. 1985 Eldorado Engine Died! help!
  239. A 4.X Water Pump Story - Not for the Faint of Heart
  240. service vehicle soon is on my dash
  241. Intake gaskets leaking...common problem on the 4.9?
  242. newbie need help
  243. 4.9 Pinging
  244. Stumbling on the on ramps 4.9
  245. Advice/Help Please -- Goodyear Gave Up
  246. 4.9L idle issues... no power.. etc.. TPS?
  247. 4.9 Engine Oil Capacity - 92 Seville
  248. Eldorado Driveability
  249. New member planning mods to 90 STS
  250. 4.5L TBI whistling