: HT4100 4.1, 4.5, 4.9



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  1. car surges badly when stopping
  2. Blown Head gasket
  3. RPO Code of the 90 4.5L V8?
  4. 4.9 stalls
  5. Choke?
  6. New Member Introduction
  7. Allante HT4100
  8. 4100 Book
  9. replacement fuel injectors
  10. how hard is it to drop the oil pan
  11. HT4100 Recommended Oil Viscosity
  12. Tuning for E10 gasoline
  13. 4.9l oil leak
  14. Poor gas mileage/Sensors, please help a bit!
  15. HT4100 PCV valve, location?
  16. Can fuel injector effect the map sensor and how it function
  17. Losing coolant when the heat is turned on.
  18. 4.9L 1995 deville car ran out of gas but wont start
  19. VIDEO of HT4100 WOT
  20. Radiator Drain Plug
  21. 86-87 Seville, Eldorado 4.9L Swap
  22. Water Pump on an '85 fleetwood
  23. engine id
  24. 4.9 firing order???
  25. Won't start when hot (intermittent)
  26. 92 Deville losing power after turning a corner
  27. 76 Eldo 500 FI Problems
  28. swap 4.1 to a 4.5 or 4.9 in 85 Seville?
  29. swap 4.1 to a 4.5 or 49 in 85 Seville?
  30. More HT4100 Tips
  31. engine knock in my 1994 sedan deville 4.9L
  32. Well, i raced 3 cars in one night with my 4.1
  33. No start, at operating temp, Flooding on restart
  34. Help Ecm/PCM Questions
  35. New Addition to the Family--85 Sedan Deville
  36. Code Analyzer
  37. slight hesitation at cold low-gear
  38. HT4100 chosen as one of the worst engines of all time
  39. Valves too far in advance or too far retarded?
  40. 1992 Cadillac STS 4.9L Issues
  41. Decking out my 4.9
  42. '93 Eldorado 4.9L - P012 & P053 Codes
  43. Urgent Help W/engine
  44. Code e048 what's the trigger?
  45. which O2 sensor for 85 DeVille/HT4100
  46. 4.9 Code 41 Saga Continues!!!
  47. 83 fleetwood 4100
  48. Huge Problem HELP !!!
  49. Cam sensor 4.9
  50. 4100 Newbie needs help!
  51. HT4100 "STOP ENGINE-OIL PRESS" light flickering
  52. Interesting 4.9 symptom, need ideas
  53. Help wth tps (Throttle Position Sensor) problem/ Or just removing Throttle Body
  54. Injector Trouble 4.9
  55. Crank pulley wont spin...
  56. She runs!
  57. 84 Seville - low speed hesitation
  58. How long will it last?
  59. 4.5 to 4.9
  60. 85 Seville 4.1 Knocking?
  61. poor gas milage
  62. Outside temp sensor location---4.9 litre.
  63. My Car is Fixed!!! New Camshaft and Lifters
  64. Water pumps...Generally speaking.
  65. NOISEY cold start ups with the pulleys, only to quiet down when warm.
  66. 93 deville 4.9 noisey cold pulleys, quiet when warm. whats going out?
  67. My speedometer is WAY off, and has problems in park
  68. 91 deville Starter enable relay
  69. gas issue
  70. '88 DeVille EXTREME ISC problems
  71. 92 STS - Stalls anywhere but the highway.
  72. 93 Eldawg Stalls while driving but drives great
  73. EGR System Question
  74. 1987 Cadillac Deville No Fuel Preasure Im lost
  75. ECM questions
  76. Bosch 19# Injectors
  77. I Lost First Gear, Car barely moves with throttle!
  78. 83 Deville Performance?
  79. would an oil stabilizer help with burning
  80. OBD1 Codes
  81. HT4100 Brand New
  82. Help! 1983 Seville with HT-4100 FWD, need ideas for a swap-out?
  83. 85 Fleetwood FWD Won't Start! Help!
  84. Any good 4.x mechanics in the Detroit area?
  85. Water Pump Removal
  86. 1985 4.1L Distibutor Drive Gear for oil pump
  87. 6.0L? say what?
  88. '91 4.9 swap into a rear drive application?
  89. 1985 Fleetwood FWD 4.1L hesitation/rough idle/won't start
  90. Possible Transmission Problem when shifting from park
  91. Water Pump - Snapped Bolt
  92. replacing camshaft bearings?
  93. 85 Deville 4.1L Oil problems.
  94. Won't Start After Driving
  95. need help concerning tune up
  96. should I replace the catalytic converter
  97. 1990 deville shifting problem
  98. TBI injectors
  99. Flat cam or bad lifter?
  100. Code E15???????
  101. flickering Service Soon and no codes...
  102. 4.1 Engine: Sensor Above #8 Spark Plug?
  103. how many mods do you all know about?
  104. high output alternator
  105. ISC RPM Out Of Range
  106. Non GM parts=sick Cadillac??
  107. 4.9 Deville Concours driving terrible again!
  108. Torque converter lock up solenoid, Where?
  109. Engine Swap
  110. 85 Eldo HT 4100 ISC/TPS
  111. 4.5 spark plugs
  112. 4100 engine temp??
  113. Weird 4.9l issues
  114. Finally Solved 4.1 Hesitation: Coil & Plug Wires
  115. Need help with 85 Eldo HT4100 Tuneup
  116. 91 Fleetwood injector impedence?
  117. How do I access the internal codes and what are the normal parameters for a '92 4.9?
  118. SERVICE SOON telltale light!!
  119. Cadillac 4.5L PFI and 4.9L PFI IAT?
  120. my 4100--what would you do
  121. Another BIG 4.x Engine Tip--Especially for 4.1 Owners
  122. what is that god awful smell
  123. '92 Deville 4.9 runs great at startup, runs like crap when hot
  124. e44 o2 error
  125. 4.1 Sputters and pops
  126. Tips on swapping HT4100 for 500
  127. Coolant Temp Light = Sensor?
  128. Need Tps Help
  129. 4.9l Starter Connection Problem
  130. 91 Deville 4.9l No Start Issue
  131. 4.9 stalling problem,and allante question
  132. Conflicting torque information
  133. Replaced Water Pump on 89 4.5 Still leaking
  134. 4100 seville engine swap help needed
  135. 4.1 to 4.9.... RWD?
  136. Blower motor not operating
  137. Any great 4.9 mods?
  138. Remanufactured HT4100 - 10K and now oil in radiator/leak
  139. HT4100 Running BAD when warm.
  140. EGR stack tubes?????
  141. HT4100 Backfires
  142. Checked your A.I.R. system filter lately?
  143. 1990 Deville PRNDL problem
  144. 1990 Deville running poorly.
  145. Thanks for the muffler info
  146. Fuel/exhaust smell seems too strong...dangerous?
  147. 4.9ltr Northstar performance?
  148. anyone know how to remove the crankshaft pully 1990 deville 4.5
  149. 1994 Deville Running Rough
  150. What does this code mean?
  151. Fuse Popping on AC Clutch
  152. 93 Seville 4.9 rough idle, slow response, P041 code
  153. 1985 Eldorado Engine Died! help!
  154. A 4.X Water Pump Story - Not for the Faint of Heart
  155. service vehicle soon is on my dash
  156. Intake gaskets leaking...common problem on the 4.9?
  157. newbie need help
  158. 4.9 Pinging
  159. Stumbling on the on ramps 4.9
  160. Advice/Help Please -- Goodyear Gave Up
  161. 4.9L idle issues... no power.. etc.. TPS?
  162. 4.9 Engine Oil Capacity - 92 Seville
  163. Eldorado Driveability
  164. New member planning mods to 90 STS
  165. 4.5L TBI whistling
  166. 4.9L 1991 Seville driving me crazy - won't start
  167. Fuel Data Center Answers
  168. PCV valve location on 4.9 litre.
  169. HT4100 Driveability Question/Problem
  170. Replacing water pump on '87 4100 - tips?
  171. Plug Wire Order-87 Ht4100
  172. intermittent miss and other weird happenings
  173. 4.5 Cooling System Woes...
  174. HT4100 SYSTEM PROBLEM E047 and B334
  175. Is lifter tick normal on a 4.9?
  176. Coolant and Supplement Change Intervals
  177. 4.1 v8 injector resistance
  178. OIL cooler lines leaking
  179. engine oil
  180. Need help
  181. Need a little help
  182. No Spark
  183. Normal??
  184. Coolant Questions
  185. Another tip for 4.x car owners
  186. Trans Fluid Capacity, '93 Deville, 4.9
  187. dumb question, anyone know where the pcv is on a 4.9?
  188. 4.9 hesitates on highway
  189. How many miles can you expect out of a 4.9 engine and transmission?
  190. 4.9 Exhaust Note
  191. 4.9 Will Not Idle Below 2500rpm!
  192. Engine miss.......AGAIN
  193. Ht4100 V8
  194. Need transmission advice, please!
  195. Not Sure What Engine I have
  196. Turbo Muffler on a 4.9
  197. Premium Fuel in the 4.9?
  198. Ht4100
  199. HT4100 v8 frd eldorado
  200. Alternator issues
  201. HT4100 Hesitation Advice
  202. A/C Recharge
  203. Anyone change a starter on a FWD 4100?
  204. ac problems
  205. 1991 Seville
  206. 1985 Eldorado thinks it a diesel?
  207. 4.9 Problems at Wide Open Throttle
  208. Eldorado and the 4.1 engine ... ????
  209. HT 4100: Avoid at all costs????? Help!
  210. Changed PCV Valve at 98k Miles
  211. Engine Noise
  212. Speed Limiter
  213. Starter/voltage problem...
  214. engine swaps - 4500, 4900, 4100 engines
  215. Service Engine Light
  216. tachometer [jumps] 4.9 Seville
  217. boost HP on a 4.9 in my 1992 seville
  218. 83 Coupe Deville hard code 33 problems
  219. 4.9 shudder when at idle
  220. Possible injector leaks?
  221. Out of no where, my 92 Eldo did not start today.
  222. HT4100 Engine 250V8
  223. Help with and '89 Deville w/4.5L
  224. Tune-up questions, spark plugs
  225. Mystery Grind in Transmission, Engine, Where?
  226. 85 Deville 4100 Driveability
  227. I dread turning this car off!
  228. 4.9 instead of 4.5??
  229. 88 cdv
  230. Should I buy a car with a 4.1 L Engine?
  231. Ok ive given up on this engine.
  232. Oil test shows coolant contamination in 4.9!
  233. Need 2 things please...
  234. honest mpg of 4.9 city driving survey
  235. transmission bump on downshift
  236. ISC motor 1993 Deville
  237. Think i messed something up
  238. A little help needed identifying a loose connector
  239. Intermittent ISC? TPS? Problem still
  240. 4.9 STILL runs rough sets codes
  241. TPS Question
  242. Maitenance Questions, 4.9L 1993 Deville
  243. loud rumble now when stopping now
  244. 4.1L Oil Cooler path through Radiator
  245. Can overheating a 4.9L once damage your headgaskets?
  246. 4.9L: original red/blue A/C valve caps?
  247. Better intake for the 4.1L
  248. Idle is too high now
  249. Slight fuel leak at TBI
  250. Check Vehicle Light