: HT4100 4.1, 4.5, 4.9



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  1. well
  2. High Mileage 4.9L Problems (desperate help needed)
  3. Missing Oil Pump O-ring On Ht4100
  4. 4.9l Deville e41 troubleshooting
  5. ISC RPM out of Range (P030)
  6. Clicking sound from valve covers?
  7. Oh no! trannys slipping
  8. 4.9L Drain Plug Leaking after Coolant Flush -- Help!
  9. 4.9 in rwd configuration?
  10. Fuel Pressure Regulator location?
  11. 4.9L engine low power
  12. here is a good one
  13. rocker arm pivot support
  14. new engine
  15. valve lifter?
  16. please dont be head gasket!!
  17. Starter Removal
  18. module needs ground?
  19. 4.1 vs 4.9
  20. well damn
  21. 4.9 Misfire
  22. P012 bad hall sensor or pick up coil?
  23. Rebuilt Ht4100 With Less Power
  24. Coolant drain locations for a 4.9 (93 SDV)
  25. Metal hose running into side of cat, what is it?
  26. Pulled plugs and compression test *pics*
  27. rip of cat conv and egr??
  28. 4100 coolant capacity
  29. 4.5L A.I.R. Error Code
  30. Increasing Horsepower in 1992 Deville
  31. 4100 Help!!!
  32. Just craps out when I give it gas
  33. He said my cams were out of time....
  34. 4.9 bearing thump
  35. Final Choice: Dynomax SuperTurbos VS. Summit Turbos
  36. Knocking when I give gas to the engine Any one know?!!!
  37. 1991 Cadillac Deville Misfiring
  38. 4.1 engine weight and application ?
  39. Timing advance and still run on MidGrade??
  40. 1990 Eldorado water pump removal help
  41. junkyard ht4100
  42. 1989 4.5L no start when cold. At witts end
  43. Engine runs poorly
  44. 4.5 Engine Woes
  45. Do it right once ....Never see it again
  46. 84Eldo 4.1 won't start
  47. 4.9 Died Again
  48. 4.9L Volcano!!!!
  49. Now I'm getting code 38! What gives?
  50. '84 4.1 running VERY rich, PLEASE HELP!!!!
  51. E30 on Fleetwood 1990
  52. Need Some Help
  53. What's this coming or going out of my cat. converter?
  54. Draining ALL the coolant!!
  55. What's the name of the device (?pump?) under on my 86 deville
  56. car running rich messing up oxygen sensor!
  57. no oil pressure
  58. 90 4.5 Runs Great till it warms up then brakes up.
  59. 4100 tuneing
  60. Engine has a hard time running
  61. i had it out with the cooling system today
  62. temperature erratic
  63. 95 4.9L #7 Cylinder dead, Injector?
  64. 4.9 Cylinder head removal questions
  65. Coolant change.Time or mileage dependant?
  66. Anti-Freeze Coming out of Heater?(fogging up windows)
  67. i changed everything almost ugghh
  68. 4.9L build-up
  69. stuck valve?
  70. I Need a bolt can you help me?
  71. update on my '82
  72. E39 Vcc
  73. WTF is going on!!!(engine runnin crazy!)
  74. 4.1 Low compression
  75. OBD code
  76. popping from carb..
  77. 1984 Having Coooold Start Problems.
  78. won't start when hot
  79. 4100 Heads For Sale
  80. [B][U]4.9 L Performance, 10" Round Air Cleaner[/B][/U]
  81. Head Gaskets or Complete Valve Job
  82. 4100 head bolts
  83. Now this is really weird to me!
  84. 84' seville timing
  85. 4.9 no longer starts
  86. ht4100 loosing power and e codes
  87. 4.1 running rich
  88. Car surges when accelerating
  89. 4.9 HEI ignition
  90. 93 eldorado vs. 92 coupe deville
  91. 4.5 Pinging
  92. Air Mix Door problem code F40
  93. Caddi still not starting
  94. 95 Deville 4.9, Low oil pressure warning
  95. im so cold
  96. Fuel lines
  97. '93 DeVille Gas Mileage Questions
  98. Question for Kcnewell
  99. my '85 FWB died on the interstate...fuel pump?
  100. throttle body cleaning????
  101. another sickening creation of mine!
  102. Coolant supplement
  103. backfiring in park
  104. 4.5 oil pan-bolts gone pan stays on
  105. Crazy overheating problem
  106. Weird Problem
  107. Need to find honest and expert mechanic in Saint Louis Help
  108. 84 Eldorado engine overheating problem
  109. Resurection of a '94 4.9--Advice please!
  110. Jr Shift kit 1-2 rpm shift? but my rebuilt transmission seems great :)
  111. 4.9 low oil pressure warning after head gaskets
  112. Backfiring from the start
  113. I really need help on this.... engine overall performs better, gas millage bad...
  114. 4.9l Engine Knocks when Started
  115. MYSTERY 94'deville water pump
  116. Rattling Rattling Rattling !!
  117. 89 Fleetwood no problems with overheating then 3 days ago leaking antifreeze......
  118. 90-92 350 TBI into 80's Fleetwood Brougham ?
  119. Possible northstar upgrade?
  120. Ignition module failing?
  121. plug wire confusion
  122. please help 4100 problem
  123. advice
  124. 4.5 no heat
  125. 4.1 Runnin a Little Hot at Idle
  126. I hope it's not too late!
  127. 4.1 Cad. Fleetwood Brougham [Tranny Question]
  128. Just installed new M.A.P. sensor now car doesn't even start!
  129. Help With 4100
  130. Help Please Va (engine Problem)
  131. ATF Generic or Name brand???
  132. 1985 deville, coolant in my oil, help
  133. help me bbobynski 4.5 lack of power
  134. '92 4.9 torque converter problem
  135. Car Stall when u hit brake at the stop light sometime
  136. Oil Leaking
  137. smog problems with 84 el dorado timing marks
  138. Help
  139. Quick question: Cradle to cradle / Rear engine/trans mount bolts
  140. Rare Cadillac Options? NM8
  141. 4.5 Fuel Filter replacement
  142. Swap 4.1 out 368 in. Can it be done?
  143. fuel filter location
  144. 93 deville water pump
  145. main bearing seel
  146. 4.9 off idle knocking?
  147. How many mile u got out of your 4.1 engine
  148. hard time starting car
  149. Needed help on 4.1 engine system
  150. 4.9 Idle Learn - Is this honestly it?
  151. 4.5 bad gas mileage and lack of power
  152. Flush at 20k ?Break in proceedure?
  153. 4.9 rpm bounce & bad mpg
  154. 91 4.9 hesitation EGR?
  155. power to fuel injector
  156. HT4100, no power uphill
  157. fuel regulator
  158. Inner wheel tire is spliting
  159. HT4100 Damper Bolt
  160. My car runs the same with or without the egr hooked up
  161. Superchip VS Timing advance
  162. mph limiter
  163. Highway millage.... bad....
  164. 88 Eldorado - rough idle, intermittent miss
  165. 4.1vs4.9
  166. Tranny Blew out
  167. Transmission wiring diag.
  168. Car not starting, please help
  169. So what do you like about your 4.9?
  170. 4.9 EGR system....
  171. Th 350
  172. problems removing oil pan - Please Help!
  173. 4.1 to 307 swap question
  174. Exhaust question once again
  175. BBob and anyone else, whats the say on synthetic?
  176. HEI In-cap Coil - What our the differences?
  177. tranny warmup?
  178. These 4.9s have some power!
  179. water pump, water pump, water pump,
  180. 1990 DeVille has" the shakes" and revs on its own
  181. 4.9 pinging not under a load
  182. Barometric Pressure Sensor location
  183. Exhaust leak in engine compartment?
  184. 5W-30 Vs 10W30 for the cold winter?
  185. trans delays shift
  186. Rebuilt motor for an 85
  187. 87 Eldo w 35,000 mi, Change tran fluid?
  188. Fuel Injector Impedance - High/Low
  189. How to make a wooden Engine Support Fixture J-28467
  190. 4.1 Coolant Leak from block-PLEASE HELP!
  191. 84 coupe deville fan shroud
  192. Mileage and Power loss, again.
  193. 4.9 valve cover gasket
  194. C-v joint
  195. 82' couple 4100 - accelerating by itslef - HELP
  196. Do I have to change coolant?
  197. 1990 4.5L Eldroado Engine running rough
  198. 4.9 speed limiter...
  199. Is this the right stuff, going to attempt this weekend
  200. TPS setting
  201. Tune up on a 89 Deville w/ 4.5
  202. Quick Question
  203. 92 eldorado E0085 dtc help pls
  204. Engine Rattle
  205. 4.1 chrome?!
  206. WHat Buttons Do I hit to CHeck the Error COdes On My 93 4.9?
  207. 4.9 off idle stumble
  208. HELP! Would a bad EGR valve cause my car to run rough on the highway?
  209. White Smoke
  210. Radiator Leak
  211. 4.5 Vs 4.9... Compairable?
  212. ROUGH idle , strange code .
  213. 85 Fleetwood FWD Engine Trouble
  214. WTB: ASAP 4.9L Front Exhaust Manifold
  215. 91 Deville 4.9 rough idle
  216. My 86 SedanDeville is running rough above 55mph
  217. Has anyone converted to the electrocruise?
  218. '86 DeVille HT4100 knock - please help :-(
  219. Engine noise while in park?
  220. 4.9 with poor gas mileage. just changed o2
  221. Low Oil Pressure
  222. Changing oil pan gasket
  223. Looking for a couple of VSS wires - '91 Deville
  224. the return of E48/E49
  225. 84' seville is a mess!
  226. EGR Vavle
  227. engine swap
  228. 92deville, idle(rough) Injector service??
  229. CAM sensor
  230. supercharging the 4.9
  231. Please help me with my 4.1..or give me a mechanic who can
  232. How to remove/replace rattling CAT
  233. pellets and 4.5 engine
  234. ohm reading for injectors on 4.5
  235. ? acceptable ohm resistance for injectors
  236. Intermittent Stalling
  237. 4.5 EGR vs. 4.9 EGR
  238. 4.5 engine
  239. Pushrod?
  240. Got new codes today.
  241. 90 Deville Dies while driving
  242. 84 4.1 Swap To 305/350 ?
  243. new to the forum, need a little help (90 4.5l pfi)
  244. Air Pump Seized (4.1 engine)
  245. OBD I codes for 4.x Engines
  246. junked 4.1 installed chevy 5.0 runs great
  247. I replaced my tps and isc but it stall every now an then
  248. Engine running rough
  249. 85 cadillac seville
  250. '93 4.9L Spark Plugs and Wires