: HT4100 4.1, 4.5, 4.9



Pages : 1 2 3 4 5 6 [7] 8 9 10 11 12 13 14 15 16 17

  1. New member planning mods to 90 STS
  2. 4.5L TBI whistling
  3. 4.9L 1991 Seville driving me crazy - won't start
  4. Fuel Data Center Answers
  5. PCV valve location on 4.9 litre.
  6. HT4100 Driveability Question/Problem
  7. Replacing water pump on '87 4100 - tips?
  8. Plug Wire Order-87 Ht4100
  9. intermittent miss and other weird happenings
  10. 4.5 Cooling System Woes...
  11. HT4100 SYSTEM PROBLEM E047 and B334
  12. Is lifter tick normal on a 4.9?
  13. Coolant and Supplement Change Intervals
  14. 4.1 v8 injector resistance
  15. OIL cooler lines leaking
  16. engine oil
  17. Need help
  18. Need a little help
  19. No Spark
  20. Normal??
  21. Coolant Questions
  22. Another tip for 4.x car owners
  23. Trans Fluid Capacity, '93 Deville, 4.9
  24. dumb question, anyone know where the pcv is on a 4.9?
  25. 4.9 hesitates on highway
  26. How many miles can you expect out of a 4.9 engine and transmission?
  27. 4.9 Exhaust Note
  28. 4.9 Will Not Idle Below 2500rpm!
  29. Engine miss.......AGAIN
  30. Ht4100 V8
  31. Need transmission advice, please!
  32. Not Sure What Engine I have
  33. Turbo Muffler on a 4.9
  34. Premium Fuel in the 4.9?
  35. Ht4100
  36. HT4100 v8 frd eldorado
  37. Alternator issues
  38. HT4100 Hesitation Advice
  39. A/C Recharge
  40. Anyone change a starter on a FWD 4100?
  41. ac problems
  42. 1991 Seville
  43. 1985 Eldorado thinks it a diesel?
  44. 4.9 Problems at Wide Open Throttle
  45. Eldorado and the 4.1 engine ... ????
  46. HT 4100: Avoid at all costs????? Help!
  47. Changed PCV Valve at 98k Miles
  48. Engine Noise
  49. Speed Limiter
  50. Starter/voltage problem...
  51. engine swaps - 4500, 4900, 4100 engines
  52. Service Engine Light
  53. tachometer [jumps] 4.9 Seville
  54. boost HP on a 4.9 in my 1992 seville
  55. 83 Coupe Deville hard code 33 problems
  56. 4.9 shudder when at idle
  57. Possible injector leaks?
  58. Out of no where, my 92 Eldo did not start today.
  59. HT4100 Engine 250V8
  60. Help with and '89 Deville w/4.5L
  61. Tune-up questions, spark plugs
  62. Mystery Grind in Transmission, Engine, Where?
  63. 85 Deville 4100 Driveability
  64. I dread turning this car off!
  65. 4.9 instead of 4.5??
  66. 88 cdv
  67. Should I buy a car with a 4.1 L Engine?
  68. Ok ive given up on this engine.
  69. Oil test shows coolant contamination in 4.9!
  70. Need 2 things please...
  71. honest mpg of 4.9 city driving survey
  72. transmission bump on downshift
  73. ISC motor 1993 Deville
  74. Think i messed something up
  75. A little help needed identifying a loose connector
  76. Intermittent ISC? TPS? Problem still
  77. 4.9 STILL runs rough sets codes
  78. TPS Question
  79. Maitenance Questions, 4.9L 1993 Deville
  80. loud rumble now when stopping now
  81. 4.1L Oil Cooler path through Radiator
  82. Can overheating a 4.9L once damage your headgaskets?
  83. 4.9L: original red/blue A/C valve caps?
  84. Better intake for the 4.1L
  85. Idle is too high now
  86. Slight fuel leak at TBI
  87. Check Vehicle Light
  88. Setting Timing on '84 HT4100 4.1L
  89. tuning Questions for a 93 deville
  90. gas leak from cannister (85 Eldorado)
  91. High startup idle?
  92. Car wont shift on its own but shifts manually
  93. Coolant Supplement?
  94. Calling all 4.5 PFI and 4.9 PFI Owners
  95. Think the engine/tranny would last?
  96. Rocker Arm Support Part Problem-HELP?
  97. Problems w/ 4.9
  98. HT4100 Misfire Question
  99. indexing spark plugs
  100. 4.5L L (front) Cracked Header
  101. Alternator Issues--Please Help!
  102. Another Isc Question?
  103. 4.1L.. What's the problem?
  104. Best way to bleed the cooling system?
  105. car runs too rich didnt pass smog
  106. ht4100 engine cleanup. how to?
  107. Why An Aluminum Block with Iron Heads?
  108. 1985 deville runs great but
  109. 85 Seville with 4.1 Engine: Buy or Run?
  110. Anyone change the valve cover gaskets?
  111. Horrendous gas mileage
  112. Failed smog test - high CO
  113. Looking f/a 4100 4.1?
  114. 85 Deville TV Cable Adjustment
  115. fuel injection??>??
  116. 4.9L seville/deville fastchips or superchips performance chip
  117. keeps going like the energizer bunny
  118. E055 OBD1 Code
  119. Air Filter Question
  120. Serevice engine soon
  121. 4.1/4100 Distributor Hold down- how to tighten???
  122. 4.9 litre plug wire access problem.
  123. Engine mount - Any unique replacements?
  124. 4.9 Squeaking at Idle
  125. The continuing saga of my tranny problems...please help!
  126. 86 Fleetwood engine swap
  127. What senses the RPM on HT4100 engines?
  128. Open Throttle Switch Signal E27
  129. 83 FWB Idle Problems
  130. Got a code do not know what or where to check
  131. weird SES and hard start problem
  132. Sputtering, loss of power when hot
  133. Your opinion of the 4.5L V8 in the 88 DeVille
  134. oil
  135. Tranny Slipping?
  136. part identification 4.9
  137. 1992 seville 4.9 fuel filter location
  138. Good old 83' Coupe Deville
  139. new cadillac seville owner coolant flush
  140. 1993 Deville power steering pump failure
  141. ECM software
  142. 130 mph in a 4.9!
  143. Frozen Pulley
  144. Ignition Module issue
  145. Removing EGR valve - 4100
  146. Bad alternator in 93 Deville, need help
  147. Restore Lubricants
  148. Bad Head Gasket 92 DeVille 4.9- Need opinion
  149. Throttle Position Sensor Misadjusted
  150. A.I.R. Pump 4.5l '89 Deville
  151. temp sensor
  152. Don't ask oil questions on this site.
  153. 1985 deville died
  154. where do i go from here
  155. Need Help On Two More Things
  156. serious help needed
  157. 1983 Caddy transmission
  158. Strange Timing Issues
  159. Mobil 1 10W30
  160. 1985 Deville with a 4100 and it will not crank
  161. 1985 Deville with a 4100 and it will not crank
  162. Code E48 diagnosis
  163. codes ???please help
  164. 4.5 Allante intake on 93 4.9 deville
  165. New Trouble Code
  166. 1989 Caddy Deville......
  167. Throttle Body Plate issue
  168. Code and Coolant Prob.
  169. Low oil pressure!
  170. Oil Cooler Lines Leaking
  171. 1989 Caddy Deville......help!!!
  172. Stallling at idle
  173. gas pedal
  174. 4.5 TBI rough idle
  175. 94 Deville has almost no power from start
  176. 84 eldo conv't - 70 weight oil - yes or no?
  177. E012,E053 Won't run
  178. 1990 Seville Timing chain?
  179. 4.9 groaning
  180. '84 Eldo Code 44
  181. HT-4500 Starting trouble
  182. Speedometer Sensor issue ?
  183. The Ultimate FWD Cadillac Engine Swap
  184. Sticky Gas Pedal...4.5L
  185. Underhood smoking... need help with a diagnosis
  186. Fixed EGR now MPG is lower
  187. engin and trany swap for an 85 coupe deville
  188. Favorite things about the 4.9?
  189. 86 EGR Valve
  190. 4.5 TBI smoking
  191. Fuel pump on 4.9 92 Deville
  192. Fleetwood/DeVille Speedometer
  193. 4.1 Knock?? Or Tap??
  194. 1990 deville 4.5 air pump noisy
  195. 4.5L TBI Grumbling
  196. HT4500 and 4900 series Performance
  197. 4.1L injector
  198. how to get more hp from a 4100
  199. Intermittent Lurch—91 DeVille 4.9
  200. MAP Problems
  201. Oil Level
  202. How to start when very cold (less than 0 F)
  203. Need Help Please
  204. Engine surges at slow speed
  205. Stop Engine, Low Oil Pressure
  206. 1988 Fleetwood 4.5 Distributor order
  207. 1985 Seville Power Steering Pulley bolt
  208. Installing oil pump in 4.9 engine.
  209. 1985 deville ht4100 jump start
  210. GM Top End Cleaner Has Been Discontinued
  211. Makes Me Happy!
  212. HT4100 Question
  213. HT 4100 knock, 83 Eldorado (I know, another thread on this)
  214. Makes me nervous!
  215. 4.9 E55 code. TPS?
  216. Thoughts on the 4.5
  217. power steering leakk
  218. The SEA FOAM experience thread.
  219. Oh just great, a collapsed lifter in #1 cylinder!!
  220. 94 4.9 bypass siezed A/C compressor
  221. 85 Deville Still Has Poor Performance
  222. Need exhaust manifolds 4.1 HT4100
  223. 93 Deville stalls after car warms up
  224. New Caddy Owner, Need Some Help
  225. Rattle Under Car
  226. What kind of ISC motor should i get?
  227. 84 eldorado fuse panel pictures?
  228. Crack in my Block
  229. 93 DeVille AC converter clutch bypass ???
  230. Cooling System - Water Pump Conditioner/Anti-Rust
  231. Stock Exhaust dimensions on 93 Devilles
  232. Campaign 95-C-72 (recall)
  233. fuel pressure????
  234. Just finished my 4.9 Water pump repair pics inside
  235. 4.9L Rear Oil Leak
  236. Quick question: Ignition Control Module
  237. Disaster
  238. EGR Valve
  239. 4.1 main bearing thump
  240. Tranny problems, E39!! Please help, dont want to rebuild...
  241. 95 Deville 4.9 need help
  242. OMG water pump problem!
  243. Bypass Catalytic Converter on 1993 Deville?
  244. Starter motor gone on 87 deville 4.1
  245. Need help 4.9 L Fuel Delivery problem
  246. 92 4.9 DeVille runs horrible, sets codes
  247. Roller Lifters On The 4.9?
  248. water pump change on 4.1ltr
  249. 93 deville
  250. 1993 Cadillac Seville: Please Help starting problem