: HT4100 4.1, 4.5, 4.9



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  1. 4.9 Code 41 Saga Continues!!!
  2. 83 fleetwood 4100
  3. Huge Problem HELP !!!
  4. Cam sensor 4.9
  5. 4100 Newbie needs help!
  6. HT4100 "STOP ENGINE-OIL PRESS" light flickering
  7. Interesting 4.9 symptom, need ideas
  8. Help wth tps (Throttle Position Sensor) problem/ Or just removing Throttle Body
  9. Injector Trouble 4.9
  10. Crank pulley wont spin...
  11. She runs!
  12. 84 Seville - low speed hesitation
  13. How long will it last?
  14. 4.5 to 4.9
  15. 85 Seville 4.1 Knocking?
  16. poor gas milage
  17. Outside temp sensor location---4.9 litre.
  18. My Car is Fixed!!! New Camshaft and Lifters
  19. Water pumps...Generally speaking.
  20. NOISEY cold start ups with the pulleys, only to quiet down when warm.
  21. 93 deville 4.9 noisey cold pulleys, quiet when warm. whats going out?
  22. My speedometer is WAY off, and has problems in park
  23. 91 deville Starter enable relay
  24. gas issue
  25. '88 DeVille EXTREME ISC problems
  26. 92 STS - Stalls anywhere but the highway.
  27. 93 Eldawg Stalls while driving but drives great
  28. EGR System Question
  29. 1987 Cadillac Deville No Fuel Preasure Im lost
  30. ECM questions
  31. Bosch 19# Injectors
  32. I Lost First Gear, Car barely moves with throttle!
  33. 83 Deville Performance?
  34. would an oil stabilizer help with burning
  35. OBD1 Codes
  36. HT4100 Brand New
  37. Help! 1983 Seville with HT-4100 FWD, need ideas for a swap-out?
  38. 85 Fleetwood FWD Won't Start! Help!
  39. Any good 4.x mechanics in the Detroit area?
  40. Water Pump Removal
  41. 1985 4.1L Distibutor Drive Gear for oil pump
  42. 6.0L? say what?
  43. '91 4.9 swap into a rear drive application?
  44. 1985 Fleetwood FWD 4.1L hesitation/rough idle/won't start
  45. Possible Transmission Problem when shifting from park
  46. Water Pump - Snapped Bolt
  47. replacing camshaft bearings?
  48. 85 Deville 4.1L Oil problems.
  49. Won't Start After Driving
  50. need help concerning tune up
  51. should I replace the catalytic converter
  52. 1990 deville shifting problem
  53. TBI injectors
  54. Flat cam or bad lifter?
  55. Code E15???????
  56. flickering Service Soon and no codes...
  57. 4.1 Engine: Sensor Above #8 Spark Plug?
  58. how many mods do you all know about?
  59. high output alternator
  60. ISC RPM Out Of Range
  61. Non GM parts=sick Cadillac??
  62. 4.9 Deville Concours driving terrible again!
  63. Torque converter lock up solenoid, Where?
  64. Engine Swap
  65. 85 Eldo HT 4100 ISC/TPS
  66. 4.5 spark plugs
  67. 4100 engine temp??
  68. Weird 4.9l issues
  69. Finally Solved 4.1 Hesitation: Coil & Plug Wires
  70. Need help with 85 Eldo HT4100 Tuneup
  71. 91 Fleetwood injector impedence?
  72. How do I access the internal codes and what are the normal parameters for a '92 4.9?
  73. SERVICE SOON telltale light!!
  74. Cadillac 4.5L PFI and 4.9L PFI IAT?
  75. my 4100--what would you do
  76. Another BIG 4.x Engine Tip--Especially for 4.1 Owners
  77. what is that god awful smell
  78. '92 Deville 4.9 runs great at startup, runs like crap when hot
  79. e44 o2 error
  80. 4.1 Sputters and pops
  81. Tips on swapping HT4100 for 500
  82. Coolant Temp Light = Sensor?
  83. Need Tps Help
  84. 4.9l Starter Connection Problem
  85. 91 Deville 4.9l No Start Issue
  86. 4.9 stalling problem,and allante question
  87. Conflicting torque information
  88. Replaced Water Pump on 89 4.5 Still leaking
  89. 4100 seville engine swap help needed
  90. 4.1 to 4.9.... RWD?
  91. Blower motor not operating
  92. Any great 4.9 mods?
  93. Remanufactured HT4100 - 10K and now oil in radiator/leak
  94. HT4100 Running BAD when warm.
  95. EGR stack tubes?????
  96. HT4100 Backfires
  97. Checked your A.I.R. system filter lately?
  98. 1990 Deville PRNDL problem
  99. 1990 Deville running poorly.
  100. Thanks for the muffler info
  101. Fuel/exhaust smell seems too strong...dangerous?
  102. 4.9ltr Northstar performance?
  103. anyone know how to remove the crankshaft pully 1990 deville 4.5
  104. 1994 Deville Running Rough
  105. What does this code mean?
  106. Fuse Popping on AC Clutch
  107. 93 Seville 4.9 rough idle, slow response, P041 code
  108. 1985 Eldorado Engine Died! help!
  109. A 4.X Water Pump Story - Not for the Faint of Heart
  110. service vehicle soon is on my dash
  111. Intake gaskets leaking...common problem on the 4.9?
  112. newbie need help
  113. 4.9 Pinging
  114. Stumbling on the on ramps 4.9
  115. Advice/Help Please -- Goodyear Gave Up
  116. 4.9L idle issues... no power.. etc.. TPS?
  117. 4.9 Engine Oil Capacity - 92 Seville
  118. Eldorado Driveability
  119. New member planning mods to 90 STS
  120. 4.5L TBI whistling
  121. 4.9L 1991 Seville driving me crazy - won't start
  122. Fuel Data Center Answers
  123. PCV valve location on 4.9 litre.
  124. HT4100 Driveability Question/Problem
  125. Replacing water pump on '87 4100 - tips?
  126. Plug Wire Order-87 Ht4100
  127. intermittent miss and other weird happenings
  128. 4.5 Cooling System Woes...
  129. HT4100 SYSTEM PROBLEM E047 and B334
  130. Is lifter tick normal on a 4.9?
  131. Coolant and Supplement Change Intervals
  132. 4.1 v8 injector resistance
  133. OIL cooler lines leaking
  134. engine oil
  135. Need help
  136. Need a little help
  137. No Spark
  138. Normal??
  139. Coolant Questions
  140. Another tip for 4.x car owners
  141. Trans Fluid Capacity, '93 Deville, 4.9
  142. dumb question, anyone know where the pcv is on a 4.9?
  143. 4.9 hesitates on highway
  144. How many miles can you expect out of a 4.9 engine and transmission?
  145. 4.9 Exhaust Note
  146. 4.9 Will Not Idle Below 2500rpm!
  147. Engine miss.......AGAIN
  148. Ht4100 V8
  149. Need transmission advice, please!
  150. Not Sure What Engine I have
  151. Turbo Muffler on a 4.9
  152. Premium Fuel in the 4.9?
  153. Ht4100
  154. HT4100 v8 frd eldorado
  155. Alternator issues
  156. HT4100 Hesitation Advice
  157. A/C Recharge
  158. Anyone change a starter on a FWD 4100?
  159. ac problems
  160. 1991 Seville
  161. 1985 Eldorado thinks it a diesel?
  162. 4.9 Problems at Wide Open Throttle
  163. Eldorado and the 4.1 engine ... ????
  164. HT 4100: Avoid at all costs????? Help!
  165. Changed PCV Valve at 98k Miles
  166. Engine Noise
  167. Speed Limiter
  168. Starter/voltage problem...
  169. engine swaps - 4500, 4900, 4100 engines
  170. Service Engine Light
  171. tachometer [jumps] 4.9 Seville
  172. boost HP on a 4.9 in my 1992 seville
  173. 83 Coupe Deville hard code 33 problems
  174. 4.9 shudder when at idle
  175. Possible injector leaks?
  176. Out of no where, my 92 Eldo did not start today.
  177. HT4100 Engine 250V8
  178. Help with and '89 Deville w/4.5L
  179. Tune-up questions, spark plugs
  180. Mystery Grind in Transmission, Engine, Where?
  181. 85 Deville 4100 Driveability
  182. I dread turning this car off!
  183. 4.9 instead of 4.5??
  184. 88 cdv
  185. Should I buy a car with a 4.1 L Engine?
  186. Ok ive given up on this engine.
  187. Oil test shows coolant contamination in 4.9!
  188. Need 2 things please...
  189. honest mpg of 4.9 city driving survey
  190. transmission bump on downshift
  191. ISC motor 1993 Deville
  192. Think i messed something up
  193. A little help needed identifying a loose connector
  194. Intermittent ISC? TPS? Problem still
  195. 4.9 STILL runs rough sets codes
  196. TPS Question
  197. Maitenance Questions, 4.9L 1993 Deville
  198. loud rumble now when stopping now
  199. 4.1L Oil Cooler path through Radiator
  200. Can overheating a 4.9L once damage your headgaskets?
  201. 4.9L: original red/blue A/C valve caps?
  202. Better intake for the 4.1L
  203. Idle is too high now
  204. Slight fuel leak at TBI
  205. Check Vehicle Light
  206. Setting Timing on '84 HT4100 4.1L
  207. tuning Questions for a 93 deville
  208. gas leak from cannister (85 Eldorado)
  209. High startup idle?
  210. Car wont shift on its own but shifts manually
  211. Coolant Supplement?
  212. Calling all 4.5 PFI and 4.9 PFI Owners
  213. Think the engine/tranny would last?
  214. Rocker Arm Support Part Problem-HELP?
  215. Problems w/ 4.9
  216. HT4100 Misfire Question
  217. indexing spark plugs
  218. 4.5L L (front) Cracked Header
  219. Alternator Issues--Please Help!
  220. Another Isc Question?
  221. 4.1L.. What's the problem?
  222. Best way to bleed the cooling system?
  223. car runs too rich didnt pass smog
  224. ht4100 engine cleanup. how to?
  225. Why An Aluminum Block with Iron Heads?
  226. 1985 deville runs great but
  227. 85 Seville with 4.1 Engine: Buy or Run?
  228. Anyone change the valve cover gaskets?
  229. Horrendous gas mileage
  230. Failed smog test - high CO
  231. Looking f/a 4100 4.1?
  232. 85 Deville TV Cable Adjustment
  233. fuel injection??>??
  234. 4.9L seville/deville fastchips or superchips performance chip
  235. keeps going like the energizer bunny
  236. E055 OBD1 Code
  237. Air Filter Question
  238. Serevice engine soon
  239. 4.1/4100 Distributor Hold down- how to tighten???
  240. 4.9 litre plug wire access problem.
  241. Engine mount - Any unique replacements?
  242. 4.9 Squeaking at Idle
  243. The continuing saga of my tranny problems...please help!
  244. 86 Fleetwood engine swap
  245. What senses the RPM on HT4100 engines?
  246. Open Throttle Switch Signal E27
  247. 83 FWB Idle Problems
  248. Got a code do not know what or where to check
  249. weird SES and hard start problem
  250. Sputtering, loss of power when hot