: HT4100 4.1, 4.5, 4.9



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  1. Hall Effect
  2. How do you get to the back of the FDC
  3. 4100 RWD replacement source
  4. mechanical water temp guage
  5. deck height and bore spacing
  6. 88 4.5L Running rough
  7. 90 eldo-possible tranny issue and engine issue
  8. Exhaust Muffler
  9. 4.9 litre--flat tappet engine?
  10. 4.1 to 4.5
  11. New to Throttle Body Injection?
  12. Haynes or Chiltons
  13. 4100 Updated intake gasket set
  14. '93 Eldorado, 4.9L - Partial Fire, No Start
  15. How do you clean 4.5 throttle body?
  16. oil change
  17. Crazy Coolant Temperatures
  18. Mustard like substance in radiator
  19. Help my 91 cadilliac deville 4.9
  20. Two Problems Not Starting and Stalling
  21. 4.9 water pump
  22. Broken Upper Radiator Hose Connector
  23. 1994 Sedan Deville questions...
  24. Piston 6 hits sparkplug - Bad timing
  25. Coupe Deville 4.5 Rough Running
  26. new and need some help please!!!!!
  27. What should I do, buy or walk? 89 Coupe Deville
  28. E20 - Open Fuel Pump Circut Feedback Signal
  29. 4.1 Running Bad Again
  30. 4.5 Allante Intake on a 4.9 Eldorado
  31. heat issues!!!!
  32. Need Help ASAP!!!!!!
  33. Lound thump when shutting off engine, then no restart
  34. 4.9 Oil Filter ??
  35. 4.9 and spark knock
  36. I really need help, please!
  37. will my 4.9 fit?
  38. I'm going to try the 4.1->4.9 conversion
  39. 1986 cadillac Stalling up hills, need help ASAP
  40. Case of the Evil Tranny
  41. Question when torquing headbolts 4.9L
  42. Synthetic oil no no in 4100
  43. New brain wracking symptom...
  44. For those of you with coolant loss issues.
  45. '93 Eldorado, 4.9L - Bad Fuel Pump?
  46. 4.1 Spun a cam bearing,
  47. C bieng displayed
  48. Is this engine rebuildable?
  49. Flowmaster Exhaust for a 4.9 Deville
  50. A/C Compressor Belt Bypass - 89 Deville 4.5
  51. all 4100's interchangable?
  52. car surges badly when stopping
  53. Blown Head gasket
  54. RPO Code of the 90 4.5L V8?
  55. 4.9 stalls
  56. Choke?
  57. New Member Introduction
  58. Allante HT4100
  59. 4100 Book
  60. replacement fuel injectors
  61. how hard is it to drop the oil pan
  62. HT4100 Recommended Oil Viscosity
  63. Tuning for E10 gasoline
  64. 4.9l oil leak
  65. Poor gas mileage/Sensors, please help a bit!
  66. HT4100 PCV valve, location?
  67. Can fuel injector effect the map sensor and how it function
  68. Losing coolant when the heat is turned on.
  69. 4.9L 1995 deville car ran out of gas but wont start
  70. VIDEO of HT4100 WOT
  71. Radiator Drain Plug
  72. 86-87 Seville, Eldorado 4.9L Swap
  73. Water Pump on an '85 fleetwood
  74. engine id
  75. 4.9 firing order???
  76. Won't start when hot (intermittent)
  77. 92 Deville losing power after turning a corner
  78. 76 Eldo 500 FI Problems
  79. swap 4.1 to a 4.5 or 4.9 in 85 Seville?
  80. swap 4.1 to a 4.5 or 49 in 85 Seville?
  81. More HT4100 Tips
  82. engine knock in my 1994 sedan deville 4.9L
  83. Well, i raced 3 cars in one night with my 4.1
  84. No start, at operating temp, Flooding on restart
  85. Help Ecm/PCM Questions
  86. New Addition to the Family--85 Sedan Deville
  87. Code Analyzer
  88. slight hesitation at cold low-gear
  89. HT4100 chosen as one of the worst engines of all time
  90. Valves too far in advance or too far retarded?
  91. 1992 Cadillac STS 4.9L Issues
  92. Decking out my 4.9
  93. '93 Eldorado 4.9L - P012 & P053 Codes
  94. Urgent Help W/engine
  95. Code e048 what's the trigger?
  96. which O2 sensor for 85 DeVille/HT4100
  97. 4.9 Code 41 Saga Continues!!!
  98. 83 fleetwood 4100
  99. Huge Problem HELP !!!
  100. Cam sensor 4.9
  101. 4100 Newbie needs help!
  102. HT4100 "STOP ENGINE-OIL PRESS" light flickering
  103. Interesting 4.9 symptom, need ideas
  104. Help wth tps (Throttle Position Sensor) problem/ Or just removing Throttle Body
  105. Injector Trouble 4.9
  106. Crank pulley wont spin...
  107. She runs!
  108. 84 Seville - low speed hesitation
  109. How long will it last?
  110. 4.5 to 4.9
  111. 85 Seville 4.1 Knocking?
  112. poor gas milage
  113. Outside temp sensor location---4.9 litre.
  114. My Car is Fixed!!! New Camshaft and Lifters
  115. Water pumps...Generally speaking.
  116. NOISEY cold start ups with the pulleys, only to quiet down when warm.
  117. 93 deville 4.9 noisey cold pulleys, quiet when warm. whats going out?
  118. My speedometer is WAY off, and has problems in park
  119. 91 deville Starter enable relay
  120. gas issue
  121. '88 DeVille EXTREME ISC problems
  122. 92 STS - Stalls anywhere but the highway.
  123. 93 Eldawg Stalls while driving but drives great
  124. EGR System Question
  125. 1987 Cadillac Deville No Fuel Preasure Im lost
  126. ECM questions
  127. Bosch 19# Injectors
  128. I Lost First Gear, Car barely moves with throttle!
  129. 83 Deville Performance?
  130. would an oil stabilizer help with burning
  131. OBD1 Codes
  132. HT4100 Brand New
  133. Help! 1983 Seville with HT-4100 FWD, need ideas for a swap-out?
  134. 85 Fleetwood FWD Won't Start! Help!
  135. Any good 4.x mechanics in the Detroit area?
  136. Water Pump Removal
  137. 1985 4.1L Distibutor Drive Gear for oil pump
  138. 6.0L? say what?
  139. '91 4.9 swap into a rear drive application?
  140. 1985 Fleetwood FWD 4.1L hesitation/rough idle/won't start
  141. Possible Transmission Problem when shifting from park
  142. Water Pump - Snapped Bolt
  143. replacing camshaft bearings?
  144. 85 Deville 4.1L Oil problems.
  145. Won't Start After Driving
  146. need help concerning tune up
  147. should I replace the catalytic converter
  148. 1990 deville shifting problem
  149. TBI injectors
  150. Flat cam or bad lifter?
  151. Code E15???????
  152. flickering Service Soon and no codes...
  153. 4.1 Engine: Sensor Above #8 Spark Plug?
  154. how many mods do you all know about?
  155. high output alternator
  156. ISC RPM Out Of Range
  157. Non GM parts=sick Cadillac??
  158. 4.9 Deville Concours driving terrible again!
  159. Torque converter lock up solenoid, Where?
  160. Engine Swap
  161. 85 Eldo HT 4100 ISC/TPS
  162. 4.5 spark plugs
  163. 4100 engine temp??
  164. Weird 4.9l issues
  165. Finally Solved 4.1 Hesitation: Coil & Plug Wires
  166. Need help with 85 Eldo HT4100 Tuneup
  167. 91 Fleetwood injector impedence?
  168. How do I access the internal codes and what are the normal parameters for a '92 4.9?
  169. SERVICE SOON telltale light!!
  170. Cadillac 4.5L PFI and 4.9L PFI IAT?
  171. my 4100--what would you do
  172. Another BIG 4.x Engine Tip--Especially for 4.1 Owners
  173. what is that god awful smell
  174. '92 Deville 4.9 runs great at startup, runs like crap when hot
  175. e44 o2 error
  176. 4.1 Sputters and pops
  177. Tips on swapping HT4100 for 500
  178. Coolant Temp Light = Sensor?
  179. Need Tps Help
  180. 4.9l Starter Connection Problem
  181. 91 Deville 4.9l No Start Issue
  182. 4.9 stalling problem,and allante question
  183. Conflicting torque information
  184. Replaced Water Pump on 89 4.5 Still leaking
  185. 4100 seville engine swap help needed
  186. 4.1 to 4.9.... RWD?
  187. Blower motor not operating
  188. Any great 4.9 mods?
  189. Remanufactured HT4100 - 10K and now oil in radiator/leak
  190. HT4100 Running BAD when warm.
  191. EGR stack tubes?????
  192. HT4100 Backfires
  193. Checked your A.I.R. system filter lately?
  194. 1990 Deville PRNDL problem
  195. 1990 Deville running poorly.
  196. Thanks for the muffler info
  197. Fuel/exhaust smell seems too strong...dangerous?
  198. 4.9ltr Northstar performance?
  199. anyone know how to remove the crankshaft pully 1990 deville 4.5
  200. 1994 Deville Running Rough
  201. What does this code mean?
  202. Fuse Popping on AC Clutch
  203. 93 Seville 4.9 rough idle, slow response, P041 code
  204. 1985 Eldorado Engine Died! help!
  205. A 4.X Water Pump Story - Not for the Faint of Heart
  206. service vehicle soon is on my dash
  207. Intake gaskets leaking...common problem on the 4.9?
  208. newbie need help
  209. 4.9 Pinging
  210. Stumbling on the on ramps 4.9
  211. Advice/Help Please -- Goodyear Gave Up
  212. 4.9L idle issues... no power.. etc.. TPS?
  213. 4.9 Engine Oil Capacity - 92 Seville
  214. Eldorado Driveability
  215. New member planning mods to 90 STS
  216. 4.5L TBI whistling
  217. 4.9L 1991 Seville driving me crazy - won't start
  218. Fuel Data Center Answers
  219. PCV valve location on 4.9 litre.
  220. HT4100 Driveability Question/Problem
  221. Replacing water pump on '87 4100 - tips?
  222. Plug Wire Order-87 Ht4100
  223. intermittent miss and other weird happenings
  224. 4.5 Cooling System Woes...
  225. HT4100 SYSTEM PROBLEM E047 and B334
  226. Is lifter tick normal on a 4.9?
  227. Coolant and Supplement Change Intervals
  228. 4.1 v8 injector resistance
  229. OIL cooler lines leaking
  230. engine oil
  231. Need help
  232. Need a little help
  233. No Spark
  234. Normal??
  235. Coolant Questions
  236. Another tip for 4.x car owners
  237. Trans Fluid Capacity, '93 Deville, 4.9
  238. dumb question, anyone know where the pcv is on a 4.9?
  239. 4.9 hesitates on highway
  240. How many miles can you expect out of a 4.9 engine and transmission?
  241. 4.9 Exhaust Note
  242. 4.9 Will Not Idle Below 2500rpm!
  243. Engine miss.......AGAIN
  244. Ht4100 V8
  245. Need transmission advice, please!
  246. Not Sure What Engine I have
  247. Turbo Muffler on a 4.9
  248. Premium Fuel in the 4.9?
  249. Ht4100
  250. HT4100 v8 frd eldorado