: HT4100 4.1, 4.5, 4.9



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  1. Help Ecm/PCM Questions
  2. New Addition to the Family--85 Sedan Deville
  3. Code Analyzer
  4. slight hesitation at cold low-gear
  5. HT4100 chosen as one of the worst engines of all time
  6. Valves too far in advance or too far retarded?
  7. 1992 Cadillac STS 4.9L Issues
  8. Decking out my 4.9
  9. '93 Eldorado 4.9L - P012 & P053 Codes
  10. Urgent Help W/engine
  11. Code e048 what's the trigger?
  12. which O2 sensor for 85 DeVille/HT4100
  13. 4.9 Code 41 Saga Continues!!!
  14. 83 fleetwood 4100
  15. Huge Problem HELP !!!
  16. Cam sensor 4.9
  17. 4100 Newbie needs help!
  18. HT4100 "STOP ENGINE-OIL PRESS" light flickering
  19. Interesting 4.9 symptom, need ideas
  20. Help wth tps (Throttle Position Sensor) problem/ Or just removing Throttle Body
  21. Injector Trouble 4.9
  22. Crank pulley wont spin...
  23. She runs!
  24. 84 Seville - low speed hesitation
  25. How long will it last?
  26. 4.5 to 4.9
  27. 85 Seville 4.1 Knocking?
  28. poor gas milage
  29. Outside temp sensor location---4.9 litre.
  30. My Car is Fixed!!! New Camshaft and Lifters
  31. Water pumps...Generally speaking.
  32. NOISEY cold start ups with the pulleys, only to quiet down when warm.
  33. 93 deville 4.9 noisey cold pulleys, quiet when warm. whats going out?
  34. My speedometer is WAY off, and has problems in park
  35. 91 deville Starter enable relay
  36. gas issue
  37. '88 DeVille EXTREME ISC problems
  38. 92 STS - Stalls anywhere but the highway.
  39. 93 Eldawg Stalls while driving but drives great
  40. EGR System Question
  41. 1987 Cadillac Deville No Fuel Preasure Im lost
  42. ECM questions
  43. Bosch 19# Injectors
  44. I Lost First Gear, Car barely moves with throttle!
  45. 83 Deville Performance?
  46. would an oil stabilizer help with burning
  47. OBD1 Codes
  48. HT4100 Brand New
  49. Help! 1983 Seville with HT-4100 FWD, need ideas for a swap-out?
  50. 85 Fleetwood FWD Won't Start! Help!
  51. Any good 4.x mechanics in the Detroit area?
  52. Water Pump Removal
  53. 1985 4.1L Distibutor Drive Gear for oil pump
  54. 6.0L? say what?
  55. '91 4.9 swap into a rear drive application?
  56. 1985 Fleetwood FWD 4.1L hesitation/rough idle/won't start
  57. Possible Transmission Problem when shifting from park
  58. Water Pump - Snapped Bolt
  59. replacing camshaft bearings?
  60. 85 Deville 4.1L Oil problems.
  61. Won't Start After Driving
  62. need help concerning tune up
  63. should I replace the catalytic converter
  64. 1990 deville shifting problem
  65. TBI injectors
  66. Flat cam or bad lifter?
  67. Code E15???????
  68. flickering Service Soon and no codes...
  69. 4.1 Engine: Sensor Above #8 Spark Plug?
  70. how many mods do you all know about?
  71. high output alternator
  72. ISC RPM Out Of Range
  73. Non GM parts=sick Cadillac??
  74. 4.9 Deville Concours driving terrible again!
  75. Torque converter lock up solenoid, Where?
  76. Engine Swap
  77. 85 Eldo HT 4100 ISC/TPS
  78. 4.5 spark plugs
  79. 4100 engine temp??
  80. Weird 4.9l issues
  81. Finally Solved 4.1 Hesitation: Coil & Plug Wires
  82. Need help with 85 Eldo HT4100 Tuneup
  83. 91 Fleetwood injector impedence?
  84. How do I access the internal codes and what are the normal parameters for a '92 4.9?
  85. SERVICE SOON telltale light!!
  86. Cadillac 4.5L PFI and 4.9L PFI IAT?
  87. my 4100--what would you do
  88. Another BIG 4.x Engine Tip--Especially for 4.1 Owners
  89. what is that god awful smell
  90. '92 Deville 4.9 runs great at startup, runs like crap when hot
  91. e44 o2 error
  92. 4.1 Sputters and pops
  93. Tips on swapping HT4100 for 500
  94. Coolant Temp Light = Sensor?
  95. Need Tps Help
  96. 4.9l Starter Connection Problem
  97. 91 Deville 4.9l No Start Issue
  98. 4.9 stalling problem,and allante question
  99. Conflicting torque information
  100. Replaced Water Pump on 89 4.5 Still leaking
  101. 4100 seville engine swap help needed
  102. 4.1 to 4.9.... RWD?
  103. Blower motor not operating
  104. Any great 4.9 mods?
  105. Remanufactured HT4100 - 10K and now oil in radiator/leak
  106. HT4100 Running BAD when warm.
  107. EGR stack tubes?????
  108. HT4100 Backfires
  109. Checked your A.I.R. system filter lately?
  110. 1990 Deville PRNDL problem
  111. 1990 Deville running poorly.
  112. Thanks for the muffler info
  113. Fuel/exhaust smell seems too strong...dangerous?
  114. 4.9ltr Northstar performance?
  115. anyone know how to remove the crankshaft pully 1990 deville 4.5
  116. 1994 Deville Running Rough
  117. What does this code mean?
  118. Fuse Popping on AC Clutch
  119. 93 Seville 4.9 rough idle, slow response, P041 code
  120. 1985 Eldorado Engine Died! help!
  121. A 4.X Water Pump Story - Not for the Faint of Heart
  122. service vehicle soon is on my dash
  123. Intake gaskets leaking...common problem on the 4.9?
  124. newbie need help
  125. 4.9 Pinging
  126. Stumbling on the on ramps 4.9
  127. Advice/Help Please -- Goodyear Gave Up
  128. 4.9L idle issues... no power.. etc.. TPS?
  129. 4.9 Engine Oil Capacity - 92 Seville
  130. Eldorado Driveability
  131. New member planning mods to 90 STS
  132. 4.5L TBI whistling
  133. 4.9L 1991 Seville driving me crazy - won't start
  134. Fuel Data Center Answers
  135. PCV valve location on 4.9 litre.
  136. HT4100 Driveability Question/Problem
  137. Replacing water pump on '87 4100 - tips?
  138. Plug Wire Order-87 Ht4100
  139. intermittent miss and other weird happenings
  140. 4.5 Cooling System Woes...
  141. HT4100 SYSTEM PROBLEM E047 and B334
  142. Is lifter tick normal on a 4.9?
  143. Coolant and Supplement Change Intervals
  144. 4.1 v8 injector resistance
  145. OIL cooler lines leaking
  146. engine oil
  147. Need help
  148. Need a little help
  149. No Spark
  150. Normal??
  151. Coolant Questions
  152. Another tip for 4.x car owners
  153. Trans Fluid Capacity, '93 Deville, 4.9
  154. dumb question, anyone know where the pcv is on a 4.9?
  155. 4.9 hesitates on highway
  156. How many miles can you expect out of a 4.9 engine and transmission?
  157. 4.9 Exhaust Note
  158. 4.9 Will Not Idle Below 2500rpm!
  159. Engine miss.......AGAIN
  160. Ht4100 V8
  161. Need transmission advice, please!
  162. Not Sure What Engine I have
  163. Turbo Muffler on a 4.9
  164. Premium Fuel in the 4.9?
  165. Ht4100
  166. HT4100 v8 frd eldorado
  167. Alternator issues
  168. HT4100 Hesitation Advice
  169. A/C Recharge
  170. Anyone change a starter on a FWD 4100?
  171. ac problems
  172. 1991 Seville
  173. 1985 Eldorado thinks it a diesel?
  174. 4.9 Problems at Wide Open Throttle
  175. Eldorado and the 4.1 engine ... ????
  176. HT 4100: Avoid at all costs????? Help!
  177. Changed PCV Valve at 98k Miles
  178. Engine Noise
  179. Speed Limiter
  180. Starter/voltage problem...
  181. engine swaps - 4500, 4900, 4100 engines
  182. Service Engine Light
  183. tachometer [jumps] 4.9 Seville
  184. boost HP on a 4.9 in my 1992 seville
  185. 83 Coupe Deville hard code 33 problems
  186. 4.9 shudder when at idle
  187. Possible injector leaks?
  188. Out of no where, my 92 Eldo did not start today.
  189. HT4100 Engine 250V8
  190. Help with and '89 Deville w/4.5L
  191. Tune-up questions, spark plugs
  192. Mystery Grind in Transmission, Engine, Where?
  193. 85 Deville 4100 Driveability
  194. I dread turning this car off!
  195. 4.9 instead of 4.5??
  196. 88 cdv
  197. Should I buy a car with a 4.1 L Engine?
  198. Ok ive given up on this engine.
  199. Oil test shows coolant contamination in 4.9!
  200. Need 2 things please...
  201. honest mpg of 4.9 city driving survey
  202. transmission bump on downshift
  203. ISC motor 1993 Deville
  204. Think i messed something up
  205. A little help needed identifying a loose connector
  206. Intermittent ISC? TPS? Problem still
  207. 4.9 STILL runs rough sets codes
  208. TPS Question
  209. Maitenance Questions, 4.9L 1993 Deville
  210. loud rumble now when stopping now
  211. 4.1L Oil Cooler path through Radiator
  212. Can overheating a 4.9L once damage your headgaskets?
  213. 4.9L: original red/blue A/C valve caps?
  214. Better intake for the 4.1L
  215. Idle is too high now
  216. Slight fuel leak at TBI
  217. Check Vehicle Light
  218. Setting Timing on '84 HT4100 4.1L
  219. tuning Questions for a 93 deville
  220. gas leak from cannister (85 Eldorado)
  221. High startup idle?
  222. Car wont shift on its own but shifts manually
  223. Coolant Supplement?
  224. Calling all 4.5 PFI and 4.9 PFI Owners
  225. Think the engine/tranny would last?
  226. Rocker Arm Support Part Problem-HELP?
  227. Problems w/ 4.9
  228. HT4100 Misfire Question
  229. indexing spark plugs
  230. 4.5L L (front) Cracked Header
  231. Alternator Issues--Please Help!
  232. Another Isc Question?
  233. 4.1L.. What's the problem?
  234. Best way to bleed the cooling system?
  235. car runs too rich didnt pass smog
  236. ht4100 engine cleanup. how to?
  237. Why An Aluminum Block with Iron Heads?
  238. 1985 deville runs great but
  239. 85 Seville with 4.1 Engine: Buy or Run?
  240. Anyone change the valve cover gaskets?
  241. Horrendous gas mileage
  242. Failed smog test - high CO
  243. Looking f/a 4100 4.1?
  244. 85 Deville TV Cable Adjustment
  245. fuel injection??>??
  246. 4.9L seville/deville fastchips or superchips performance chip
  247. keeps going like the energizer bunny
  248. E055 OBD1 Code
  249. Air Filter Question
  250. Serevice engine soon