: HT4100 4.1, 4.5, 4.9



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  1. engine oil supplement ?
  2. 4.5 Engine: one dead others dying
  3. air intake mod?
  4. 4100 dual exhaust anyone????
  5. 93 deville heating problem
  6. E98 Isc?
  7. well
  8. High Mileage 4.9L Problems (desperate help needed)
  9. Missing Oil Pump O-ring On Ht4100
  10. 4.9l Deville e41 troubleshooting
  11. ISC RPM out of Range (P030)
  12. Clicking sound from valve covers?
  13. Oh no! trannys slipping
  14. 4.9L Drain Plug Leaking after Coolant Flush -- Help!
  15. 4.9 in rwd configuration?
  16. Fuel Pressure Regulator location?
  17. 4.9L engine low power
  18. here is a good one
  19. rocker arm pivot support
  20. new engine
  21. valve lifter?
  22. please dont be head gasket!!
  23. Starter Removal
  24. module needs ground?
  25. 4.1 vs 4.9
  26. well damn
  27. 4.9 Misfire
  28. P012 bad hall sensor or pick up coil?
  29. Rebuilt Ht4100 With Less Power
  30. Coolant drain locations for a 4.9 (93 SDV)
  31. Metal hose running into side of cat, what is it?
  32. Pulled plugs and compression test *pics*
  33. rip of cat conv and egr??
  34. 4100 coolant capacity
  35. 4.5L A.I.R. Error Code
  36. Increasing Horsepower in 1992 Deville
  37. 4100 Help!!!
  38. Just craps out when I give it gas
  39. He said my cams were out of time....
  40. 4.9 bearing thump
  41. Final Choice: Dynomax SuperTurbos VS. Summit Turbos
  42. Knocking when I give gas to the engine Any one know?!!!
  43. 1991 Cadillac Deville Misfiring
  44. 4.1 engine weight and application ?
  45. Timing advance and still run on MidGrade??
  46. 1990 Eldorado water pump removal help
  47. junkyard ht4100
  48. 1989 4.5L no start when cold. At witts end
  49. Engine runs poorly
  50. 4.5 Engine Woes
  51. Do it right once ....Never see it again
  52. 84Eldo 4.1 won't start
  53. 4.9 Died Again
  54. 4.9L Volcano!!!!
  55. Now I'm getting code 38! What gives?
  56. '84 4.1 running VERY rich, PLEASE HELP!!!!
  57. E30 on Fleetwood 1990
  58. Need Some Help
  59. What's this coming or going out of my cat. converter?
  60. Draining ALL the coolant!!
  61. What's the name of the device (?pump?) under on my 86 deville
  62. car running rich messing up oxygen sensor!
  63. no oil pressure
  64. 90 4.5 Runs Great till it warms up then brakes up.
  65. 4100 tuneing
  66. Engine has a hard time running
  67. i had it out with the cooling system today
  68. temperature erratic
  69. 95 4.9L #7 Cylinder dead, Injector?
  70. 4.9 Cylinder head removal questions
  71. Coolant change.Time or mileage dependant?
  72. Anti-Freeze Coming out of Heater?(fogging up windows)
  73. i changed everything almost ugghh
  74. 4.9L build-up
  75. stuck valve?
  76. I Need a bolt can you help me?
  77. update on my '82
  78. E39 Vcc
  79. WTF is going on!!!(engine runnin crazy!)
  80. 4.1 Low compression
  81. OBD code
  82. popping from carb..
  83. 1984 Having Coooold Start Problems.
  84. won't start when hot
  85. 4100 Heads For Sale
  86. [B][U]4.9 L Performance, 10" Round Air Cleaner[/B][/U]
  87. Head Gaskets or Complete Valve Job
  88. 4100 head bolts
  89. Now this is really weird to me!
  90. 84' seville timing
  91. 4.9 no longer starts
  92. ht4100 loosing power and e codes
  93. 4.1 running rich
  94. Car surges when accelerating
  95. 4.9 HEI ignition
  96. 93 eldorado vs. 92 coupe deville
  97. 4.5 Pinging
  98. Air Mix Door problem code F40
  99. Caddi still not starting
  100. 95 Deville 4.9, Low oil pressure warning
  101. im so cold
  102. Fuel lines
  103. '93 DeVille Gas Mileage Questions
  104. Question for Kcnewell
  105. my '85 FWB died on the interstate...fuel pump?
  106. throttle body cleaning????
  107. another sickening creation of mine!
  108. Coolant supplement
  109. backfiring in park
  110. 4.5 oil pan-bolts gone pan stays on
  111. Crazy overheating problem
  112. Weird Problem
  113. Need to find honest and expert mechanic in Saint Louis Help
  114. 84 Eldorado engine overheating problem
  115. Resurection of a '94 4.9--Advice please!
  116. Jr Shift kit 1-2 rpm shift? but my rebuilt transmission seems great :)
  117. 4.9 low oil pressure warning after head gaskets
  118. Backfiring from the start
  119. I really need help on this.... engine overall performs better, gas millage bad...
  120. 4.9l Engine Knocks when Started
  121. MYSTERY 94'deville water pump
  122. Rattling Rattling Rattling !!
  123. 89 Fleetwood no problems with overheating then 3 days ago leaking antifreeze......
  124. 90-92 350 TBI into 80's Fleetwood Brougham ?
  125. Possible northstar upgrade?
  126. Ignition module failing?
  127. plug wire confusion
  128. please help 4100 problem
  129. advice
  130. 4.5 no heat
  131. 4.1 Runnin a Little Hot at Idle
  132. I hope it's not too late!
  133. 4.1 Cad. Fleetwood Brougham [Tranny Question]
  134. Just installed new M.A.P. sensor now car doesn't even start!
  135. Help With 4100
  136. Help Please Va (engine Problem)
  137. ATF Generic or Name brand???
  138. 1985 deville, coolant in my oil, help
  139. help me bbobynski 4.5 lack of power
  140. '92 4.9 torque converter problem
  141. Car Stall when u hit brake at the stop light sometime
  142. Oil Leaking
  143. smog problems with 84 el dorado timing marks
  144. Help
  145. Quick question: Cradle to cradle / Rear engine/trans mount bolts
  146. Rare Cadillac Options? NM8
  147. 4.5 Fuel Filter replacement
  148. Swap 4.1 out 368 in. Can it be done?
  149. fuel filter location
  150. 93 deville water pump
  151. main bearing seel
  152. 4.9 off idle knocking?
  153. How many mile u got out of your 4.1 engine
  154. hard time starting car
  155. Needed help on 4.1 engine system
  156. 4.9 Idle Learn - Is this honestly it?
  157. 4.5 bad gas mileage and lack of power
  158. Flush at 20k ?Break in proceedure?
  159. 4.9 rpm bounce & bad mpg
  160. 91 4.9 hesitation EGR?
  161. power to fuel injector
  162. HT4100, no power uphill
  163. fuel regulator
  164. Inner wheel tire is spliting
  165. HT4100 Damper Bolt
  166. My car runs the same with or without the egr hooked up
  167. Superchip VS Timing advance
  168. mph limiter
  169. Highway millage.... bad....
  170. 88 Eldorado - rough idle, intermittent miss
  171. 4.1vs4.9
  172. Tranny Blew out
  173. Transmission wiring diag.
  174. Car not starting, please help
  175. So what do you like about your 4.9?
  176. 4.9 EGR system....
  177. Th 350
  178. problems removing oil pan - Please Help!
  179. 4.1 to 307 swap question
  180. Exhaust question once again
  181. BBob and anyone else, whats the say on synthetic?
  182. HEI In-cap Coil - What our the differences?
  183. tranny warmup?
  184. These 4.9s have some power!
  185. water pump, water pump, water pump,
  186. 1990 DeVille has" the shakes" and revs on its own
  187. 4.9 pinging not under a load
  188. Barometric Pressure Sensor location
  189. Exhaust leak in engine compartment?
  190. 5W-30 Vs 10W30 for the cold winter?
  191. trans delays shift
  192. Rebuilt motor for an 85
  193. 87 Eldo w 35,000 mi, Change tran fluid?
  194. Fuel Injector Impedance - High/Low
  195. How to make a wooden Engine Support Fixture J-28467
  196. 4.1 Coolant Leak from block-PLEASE HELP!
  197. 84 coupe deville fan shroud
  198. Mileage and Power loss, again.
  199. 4.9 valve cover gasket
  200. C-v joint
  201. 82' couple 4100 - accelerating by itslef - HELP
  202. Do I have to change coolant?
  203. 1990 4.5L Eldroado Engine running rough
  204. 4.9 speed limiter...
  205. Is this the right stuff, going to attempt this weekend
  206. TPS setting
  207. Tune up on a 89 Deville w/ 4.5
  208. Quick Question
  209. 92 eldorado E0085 dtc help pls
  210. Engine Rattle
  211. 4.1 chrome?!
  212. WHat Buttons Do I hit to CHeck the Error COdes On My 93 4.9?
  213. 4.9 off idle stumble
  214. HELP! Would a bad EGR valve cause my car to run rough on the highway?
  215. White Smoke
  216. Radiator Leak
  217. 4.5 Vs 4.9... Compairable?
  218. ROUGH idle , strange code .
  219. 85 Fleetwood FWD Engine Trouble
  220. WTB: ASAP 4.9L Front Exhaust Manifold
  221. 91 Deville 4.9 rough idle
  222. My 86 SedanDeville is running rough above 55mph
  223. Has anyone converted to the electrocruise?
  224. '86 DeVille HT4100 knock - please help :-(
  225. Engine noise while in park?
  226. 4.9 with poor gas mileage. just changed o2
  227. Low Oil Pressure
  228. Changing oil pan gasket
  229. Looking for a couple of VSS wires - '91 Deville
  230. the return of E48/E49
  231. 84' seville is a mess!
  232. EGR Vavle
  233. engine swap
  234. 92deville, idle(rough) Injector service??
  235. CAM sensor
  236. supercharging the 4.9
  237. Please help me with my 4.1..or give me a mechanic who can
  238. How to remove/replace rattling CAT
  239. pellets and 4.5 engine
  240. ohm reading for injectors on 4.5
  241. ? acceptable ohm resistance for injectors
  242. Intermittent Stalling
  243. 4.5 EGR vs. 4.9 EGR
  244. 4.5 engine
  245. Pushrod?
  246. Got new codes today.
  247. 90 Deville Dies while driving
  248. 84 4.1 Swap To 305/350 ?
  249. new to the forum, need a little help (90 4.5l pfi)
  250. Air Pump Seized (4.1 engine)