: HT4100 4.1, 4.5, 4.9



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  1. '94 Deville 4.9l torque conv. clutch prob?
  2. 1986 Eldorado stalls under stress
  3. 4.9's torque
  4. Right the wrongs in a 4.1 (4100)
  5. 4.9 engine
  6. 4.9 liter vanity cover removal.
  7. The Mythical 4.9 performance Chip
  8. 4.5 Liter - Last chance before I need to give it up.
  9. Possible ECM problem
  10. Got mother's 1985 Fleetwood Brougham with HT4100
  11. Member 92 Seville 89 - Old Threads
  12. Water Pump Tasks ahead
  13. wont start cold
  14. egr question
  15. Problem of the day :)
  16. 2002 DTS trouble
  17. 250 or 252?
  18. 4.9 isc adjustment: Thanks Ranger
  19. 4.5 engine swap
  20. Hall Effect
  21. How do you get to the back of the FDC
  22. 4100 RWD replacement source
  23. mechanical water temp guage
  24. deck height and bore spacing
  25. 88 4.5L Running rough
  26. 90 eldo-possible tranny issue and engine issue
  27. Exhaust Muffler
  28. 4.9 litre--flat tappet engine?
  29. 4.1 to 4.5
  30. New to Throttle Body Injection?
  31. Suddenly Won't start, no Spark, 1985 Eldorado
  32. Haynes or Chiltons
  33. 4100 Updated intake gasket set
  34. '93 Eldorado, 4.9L - Partial Fire, No Start
  35. How do you clean 4.5 throttle body?
  36. oil change
  37. Crazy Coolant Temperatures
  38. Mustard like substance in radiator
  39. Help my 91 cadilliac deville 4.9
  40. Two Problems Not Starting and Stalling
  41. 4.9 water pump
  42. Broken Upper Radiator Hose Connector
  43. 1994 Sedan Deville questions...
  44. Piston 6 hits sparkplug - Bad timing
  45. Coupe Deville 4.5 Rough Running
  46. new and need some help please!!!!!
  47. What should I do, buy or walk? 89 Coupe Deville
  48. E20 - Open Fuel Pump Circut Feedback Signal
  49. 4.1 Running Bad Again
  50. 4.5 Allante Intake on a 4.9 Eldorado
  51. heat issues!!!!
  52. Need Help ASAP!!!!!!
  53. Lound thump when shutting off engine, then no restart
  54. 4.9 Oil Filter ??
  55. 4.9 and spark knock
  56. I really need help, please!
  57. will my 4.9 fit?
  58. I'm going to try the 4.1->4.9 conversion
  59. 1986 cadillac Stalling up hills, need help ASAP
  60. Case of the Evil Tranny
  61. Question when torquing headbolts 4.9L
  62. Synthetic oil no no in 4100
  63. New brain wracking symptom...
  64. For those of you with coolant loss issues.
  65. '93 Eldorado, 4.9L - Bad Fuel Pump?
  66. 4.1 Spun a cam bearing,
  67. C bieng displayed
  68. Is this engine rebuildable?
  69. Flowmaster Exhaust for a 4.9 Deville
  70. A/C Compressor Belt Bypass - 89 Deville 4.5
  71. all 4100's interchangable?
  72. car surges badly when stopping
  73. Blown Head gasket
  74. RPO Code of the 90 4.5L V8?
  75. 4.9 stalls
  76. Choke?
  77. New Member Introduction
  78. Allante HT4100
  79. 4100 Book
  80. replacement fuel injectors
  81. how hard is it to drop the oil pan
  82. HT4100 Recommended Oil Viscosity
  83. Tuning for E10 gasoline
  84. 4.9l oil leak
  85. Poor gas mileage/Sensors, please help a bit!
  86. HT4100 PCV valve, location?
  87. Can fuel injector effect the map sensor and how it function
  88. Losing coolant when the heat is turned on.
  89. 4.9L 1995 deville car ran out of gas but wont start
  90. VIDEO of HT4100 WOT
  91. Radiator Drain Plug
  92. 86-87 Seville, Eldorado 4.9L Swap
  93. Water Pump on an '85 fleetwood
  94. engine id
  95. 4.9 firing order???
  96. Won't start when hot (intermittent)
  97. 92 Deville losing power after turning a corner
  98. 76 Eldo 500 FI Problems
  99. swap 4.1 to a 4.5 or 4.9 in 85 Seville?
  100. swap 4.1 to a 4.5 or 49 in 85 Seville?
  101. More HT4100 Tips
  102. engine knock in my 1994 sedan deville 4.9L
  103. Well, i raced 3 cars in one night with my 4.1
  104. No start, at operating temp, Flooding on restart
  105. Help Ecm/PCM Questions
  106. New Addition to the Family--85 Sedan Deville
  107. Code Analyzer
  108. slight hesitation at cold low-gear
  109. HT4100 chosen as one of the worst engines of all time
  110. Valves too far in advance or too far retarded?
  111. 1992 Cadillac STS 4.9L Issues
  112. Decking out my 4.9
  113. '93 Eldorado 4.9L - P012 & P053 Codes
  114. Urgent Help W/engine
  115. Code e048 what's the trigger?
  116. which O2 sensor for 85 DeVille/HT4100
  117. 4.9 Code 41 Saga Continues!!!
  118. 83 fleetwood 4100
  119. Huge Problem HELP !!!
  120. Cam sensor 4.9
  121. 4100 Newbie needs help!
  122. HT4100 "STOP ENGINE-OIL PRESS" light flickering
  123. Interesting 4.9 symptom, need ideas
  124. Help wth tps (Throttle Position Sensor) problem/ Or just removing Throttle Body
  125. Injector Trouble 4.9
  126. Crank pulley wont spin...
  127. She runs!
  128. 84 Seville - low speed hesitation
  129. How long will it last?
  130. 4.5 to 4.9
  131. 85 Seville 4.1 Knocking?
  132. poor gas milage
  133. Outside temp sensor location---4.9 litre.
  134. My Car is Fixed!!! New Camshaft and Lifters
  135. Water pumps...Generally speaking.
  136. NOISEY cold start ups with the pulleys, only to quiet down when warm.
  137. 93 deville 4.9 noisey cold pulleys, quiet when warm. whats going out?
  138. My speedometer is WAY off, and has problems in park
  139. 91 deville Starter enable relay
  140. gas issue
  141. '88 DeVille EXTREME ISC problems
  142. 92 STS - Stalls anywhere but the highway.
  143. 93 Eldawg Stalls while driving but drives great
  144. EGR System Question
  145. 1987 Cadillac Deville No Fuel Preasure Im lost
  146. ECM questions
  147. Bosch 19# Injectors
  148. I Lost First Gear, Car barely moves with throttle!
  149. 83 Deville Performance?
  150. would an oil stabilizer help with burning
  151. OBD1 Codes
  152. HT4100 Brand New
  153. Help! 1983 Seville with HT-4100 FWD, need ideas for a swap-out?
  154. 85 Fleetwood FWD Won't Start! Help!
  155. Any good 4.x mechanics in the Detroit area?
  156. Water Pump Removal
  157. 1985 4.1L Distibutor Drive Gear for oil pump
  158. 6.0L? say what?
  159. '91 4.9 swap into a rear drive application?
  160. 1985 Fleetwood FWD 4.1L hesitation/rough idle/won't start
  161. Possible Transmission Problem when shifting from park
  162. Water Pump - Snapped Bolt
  163. replacing camshaft bearings?
  164. 85 Deville 4.1L Oil problems.
  165. Won't Start After Driving
  166. need help concerning tune up
  167. should I replace the catalytic converter
  168. 1990 deville shifting problem
  169. TBI injectors
  170. Flat cam or bad lifter?
  171. Code E15???????
  172. flickering Service Soon and no codes...
  173. 4.1 Engine: Sensor Above #8 Spark Plug?
  174. how many mods do you all know about?
  175. high output alternator
  176. ISC RPM Out Of Range
  177. Non GM parts=sick Cadillac??
  178. 4.9 Deville Concours driving terrible again!
  179. Torque converter lock up solenoid, Where?
  180. Engine Swap
  181. 85 Eldo HT 4100 ISC/TPS
  182. 4.5 spark plugs
  183. 4100 engine temp??
  184. Weird 4.9l issues
  185. Finally Solved 4.1 Hesitation: Coil & Plug Wires
  186. Need help with 85 Eldo HT4100 Tuneup
  187. 91 Fleetwood injector impedence?
  188. How do I access the internal codes and what are the normal parameters for a '92 4.9?
  189. SERVICE SOON telltale light!!
  190. Cadillac 4.5L PFI and 4.9L PFI IAT?
  191. my 4100--what would you do
  192. Another BIG 4.x Engine Tip--Especially for 4.1 Owners
  193. what is that god awful smell
  194. '92 Deville 4.9 runs great at startup, runs like crap when hot
  195. e44 o2 error
  196. 4.1 Sputters and pops
  197. Tips on swapping HT4100 for 500
  198. Coolant Temp Light = Sensor?
  199. Need Tps Help
  200. 4.9l Starter Connection Problem
  201. 91 Deville 4.9l No Start Issue
  202. 4.9 stalling problem,and allante question
  203. Conflicting torque information
  204. Replaced Water Pump on 89 4.5 Still leaking
  205. 4100 seville engine swap help needed
  206. 4.1 to 4.9.... RWD?
  207. Blower motor not operating
  208. Any great 4.9 mods?
  209. Remanufactured HT4100 - 10K and now oil in radiator/leak
  210. HT4100 Running BAD when warm.
  211. EGR stack tubes?????
  212. HT4100 Backfires
  213. Checked your A.I.R. system filter lately?
  214. 1990 Deville PRNDL problem
  215. 1990 Deville running poorly.
  216. Thanks for the muffler info
  217. Fuel/exhaust smell seems too strong...dangerous?
  218. 4.9ltr Northstar performance?
  219. anyone know how to remove the crankshaft pully 1990 deville 4.5
  220. 1994 Deville Running Rough
  221. What does this code mean?
  222. Fuse Popping on AC Clutch
  223. 93 Seville 4.9 rough idle, slow response, P041 code
  224. 1985 Eldorado Engine Died! help!
  225. A 4.X Water Pump Story - Not for the Faint of Heart
  226. service vehicle soon is on my dash
  227. Intake gaskets leaking...common problem on the 4.9?
  228. newbie need help
  229. 4.9 Pinging
  230. Stumbling on the on ramps 4.9
  231. Advice/Help Please -- Goodyear Gave Up
  232. 4.9L idle issues... no power.. etc.. TPS?
  233. 4.9 Engine Oil Capacity - 92 Seville
  234. Eldorado Driveability
  235. New member planning mods to 90 STS
  236. 4.5L TBI whistling
  237. 4.9L 1991 Seville driving me crazy - won't start
  238. Fuel Data Center Answers
  239. PCV valve location on 4.9 litre.
  240. HT4100 Driveability Question/Problem
  241. Replacing water pump on '87 4100 - tips?
  242. Plug Wire Order-87 Ht4100
  243. intermittent miss and other weird happenings
  244. 4.5 Cooling System Woes...
  245. HT4100 SYSTEM PROBLEM E047 and B334
  246. Is lifter tick normal on a 4.9?
  247. Coolant and Supplement Change Intervals
  248. 4.1 v8 injector resistance
  249. OIL cooler lines leaking
  250. engine oil