: HT4100 4.1, 4.5, 4.9



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  1. Typical Driveability Problem - 90 Deville
  2. Engine Fire!!! Why Me???
  3. dieseling HT4100....
  4. '82 Eldo Engine dying out, Backfiring through throttle body--Bbobynski please help!!!
  5. intermittent problemn
  6. Sparkplugs
  7. Whats The Best Oil for the HT4100???
  8. Need Help
  9. car running rough now
  10. my baby is sick again , why ??????
  11. Eldorado 4.1 motor problem
  12. Minor tune up
  13. '82 vs. '83 Eldo ECM--ARE THEY INTERCHANGEABLE?!? HELP!!!!
  14. Stupid question for smart people.
  15. Will 4.5 exhaust manifolds fit the HT4100?
  16. '85 eldo 4.1 head leak
  17. OIL Leak??????
  18. 95 deville temp.
  19. 3 questions for all you experts.
  20. 1986 4.1 rebuiled upgrades for more reliability.
  21. Idle Relearn Debate
  22. Fuel Filter Location - 85 Deville (Front Wheel)
  23. HT4100 FLOWMASTER 40series delta flow sound clip
  24. 85 Deville 4100 - Problems Galore
  25. Change Oil Light
  26. compatibility part 2
  27. Please REad need answer ASAP
  28. READ THIS ONE! \/\/ high idle
  29. 90 Deville-surging, missing, after it is warmed up
  30. ECM killing the Injectors?
  31. Someone tell me what a 'transaxle range switch' is!
  32. Electrical problem. Car won't start.
  33. my baby is sick and wont get better :(
  34. Thinking about replacing the 4.9L
  35. Accel Fuel Injectors
  36. I have 2 questions.
  37. Subtle rattling noise possibly from transmission
  38. Redline/shiftpoints for 4.5
  39. two questions pedal and ...
  40. valve spring rates
  41. I wanna know as many 0-60 times as possible!!
  42. Performance Parts for 4.9
  43. 92 Sedan Deville
  44. Car runs hot during long trips
  45. Radiator woes...
  46. How Many of You With Dead Injectors??
  47. 4.9 /Northstar
  48. Coolant shelf life?? No good after 2 years?
  49. compatibility???
  50. Exhaust Options? (photos)
  51. engine oil supplement ?
  52. 4.5 Engine: one dead others dying
  53. air intake mod?
  54. 4100 dual exhaust anyone????
  55. 93 deville heating problem
  56. E98 Isc?
  57. well
  58. High Mileage 4.9L Problems (desperate help needed)
  59. Missing Oil Pump O-ring On Ht4100
  60. 4.9l Deville e41 troubleshooting
  61. ISC RPM out of Range (P030)
  62. Clicking sound from valve covers?
  63. Oh no! trannys slipping
  64. 4.9L Drain Plug Leaking after Coolant Flush -- Help!
  65. 4.9 in rwd configuration?
  66. Fuel Pressure Regulator location?
  67. 4.9L engine low power
  68. here is a good one
  69. rocker arm pivot support
  70. new engine
  71. valve lifter?
  72. please dont be head gasket!!
  73. Starter Removal
  74. module needs ground?
  75. 4.1 vs 4.9
  76. well damn
  77. 4.9 Misfire
  78. P012 bad hall sensor or pick up coil?
  79. Rebuilt Ht4100 With Less Power
  80. Coolant drain locations for a 4.9 (93 SDV)
  81. Metal hose running into side of cat, what is it?
  82. Pulled plugs and compression test *pics*
  83. rip of cat conv and egr??
  84. 4100 coolant capacity
  85. 4.5L A.I.R. Error Code
  86. Increasing Horsepower in 1992 Deville
  87. 4100 Help!!!
  88. Just craps out when I give it gas
  89. He said my cams were out of time....
  90. 4.9 bearing thump
  91. Final Choice: Dynomax SuperTurbos VS. Summit Turbos
  92. Knocking when I give gas to the engine Any one know?!!!
  93. 1991 Cadillac Deville Misfiring
  94. 4.1 engine weight and application ?
  95. Timing advance and still run on MidGrade??
  96. 1990 Eldorado water pump removal help
  97. junkyard ht4100
  98. 1989 4.5L no start when cold. At witts end
  99. Engine runs poorly
  100. 4.5 Engine Woes
  101. Do it right once ....Never see it again
  102. 84Eldo 4.1 won't start
  103. 4.9 Died Again
  104. 4.9L Volcano!!!!
  105. Now I'm getting code 38! What gives?
  106. '84 4.1 running VERY rich, PLEASE HELP!!!!
  107. E30 on Fleetwood 1990
  108. Need Some Help
  109. What's this coming or going out of my cat. converter?
  110. Draining ALL the coolant!!
  111. What's the name of the device (?pump?) under on my 86 deville
  112. car running rich messing up oxygen sensor!
  113. no oil pressure
  114. 90 4.5 Runs Great till it warms up then brakes up.
  115. 4100 tuneing
  116. Engine has a hard time running
  117. i had it out with the cooling system today
  118. temperature erratic
  119. 95 4.9L #7 Cylinder dead, Injector?
  120. 4.9 Cylinder head removal questions
  121. Coolant change.Time or mileage dependant?
  122. Anti-Freeze Coming out of Heater?(fogging up windows)
  123. i changed everything almost ugghh
  124. 4.9L build-up
  125. stuck valve?
  126. I Need a bolt can you help me?
  127. update on my '82
  128. E39 Vcc
  129. WTF is going on!!!(engine runnin crazy!)
  130. 4.1 Low compression
  131. OBD code
  132. popping from carb..
  133. 1984 Having Coooold Start Problems.
  134. won't start when hot
  135. 4100 Heads For Sale
  136. [B][U]4.9 L Performance, 10" Round Air Cleaner[/B][/U]
  137. Head Gaskets or Complete Valve Job
  138. 4100 head bolts
  139. Now this is really weird to me!
  140. 84' seville timing
  141. 4.9 no longer starts
  142. ht4100 loosing power and e codes
  143. 4.1 running rich
  144. Car surges when accelerating
  145. 4.9 HEI ignition
  146. 93 eldorado vs. 92 coupe deville
  147. 4.5 Pinging
  148. Air Mix Door problem code F40
  149. Caddi still not starting
  150. 95 Deville 4.9, Low oil pressure warning
  151. im so cold
  152. Fuel lines
  153. '93 DeVille Gas Mileage Questions
  154. Question for Kcnewell
  155. my '85 FWB died on the interstate...fuel pump?
  156. throttle body cleaning????
  157. another sickening creation of mine!
  158. Coolant supplement
  159. backfiring in park
  160. 4.5 oil pan-bolts gone pan stays on
  161. Crazy overheating problem
  162. Weird Problem
  163. Need to find honest and expert mechanic in Saint Louis Help
  164. 84 Eldorado engine overheating problem
  165. Resurection of a '94 4.9--Advice please!
  166. Jr Shift kit 1-2 rpm shift? but my rebuilt transmission seems great :)
  167. 4.9 low oil pressure warning after head gaskets
  168. Backfiring from the start
  169. I really need help on this.... engine overall performs better, gas millage bad...
  170. 4.9l Engine Knocks when Started
  171. MYSTERY 94'deville water pump
  172. Rattling Rattling Rattling !!
  173. 89 Fleetwood no problems with overheating then 3 days ago leaking antifreeze......
  174. 90-92 350 TBI into 80's Fleetwood Brougham ?
  175. Possible northstar upgrade?
  176. Ignition module failing?
  177. plug wire confusion
  178. please help 4100 problem
  179. advice
  180. 4.5 no heat
  181. 4.1 Runnin a Little Hot at Idle
  182. I hope it's not too late!
  183. 4.1 Cad. Fleetwood Brougham [Tranny Question]
  184. Just installed new M.A.P. sensor now car doesn't even start!
  185. Help With 4100
  186. Help Please Va (engine Problem)
  187. ATF Generic or Name brand???
  188. 1985 deville, coolant in my oil, help
  189. help me bbobynski 4.5 lack of power
  190. '92 4.9 torque converter problem
  191. Car Stall when u hit brake at the stop light sometime
  192. Oil Leaking
  193. smog problems with 84 el dorado timing marks
  194. Help
  195. Quick question: Cradle to cradle / Rear engine/trans mount bolts
  196. Rare Cadillac Options? NM8
  197. 4.5 Fuel Filter replacement
  198. Swap 4.1 out 368 in. Can it be done?
  199. fuel filter location
  200. 93 deville water pump
  201. main bearing seel
  202. 4.9 off idle knocking?
  203. How many mile u got out of your 4.1 engine
  204. hard time starting car
  205. Needed help on 4.1 engine system
  206. 4.9 Idle Learn - Is this honestly it?
  207. 4.5 bad gas mileage and lack of power
  208. Flush at 20k ?Break in proceedure?
  209. 4.9 rpm bounce & bad mpg
  210. 91 4.9 hesitation EGR?
  211. power to fuel injector
  212. HT4100, no power uphill
  213. fuel regulator
  214. Inner wheel tire is spliting
  215. HT4100 Damper Bolt
  216. My car runs the same with or without the egr hooked up
  217. Superchip VS Timing advance
  218. mph limiter
  219. Highway millage.... bad....
  220. 88 Eldorado - rough idle, intermittent miss
  221. 4.1vs4.9
  222. Tranny Blew out
  223. Transmission wiring diag.
  224. Car not starting, please help
  225. So what do you like about your 4.9?
  226. 4.9 EGR system....
  227. Th 350
  228. problems removing oil pan - Please Help!
  229. 4.1 to 307 swap question
  230. Exhaust question once again
  231. BBob and anyone else, whats the say on synthetic?
  232. HEI In-cap Coil - What our the differences?
  233. tranny warmup?
  234. These 4.9s have some power!
  235. water pump, water pump, water pump,
  236. 1990 DeVille has" the shakes" and revs on its own
  237. 4.9 pinging not under a load
  238. Barometric Pressure Sensor location
  239. Exhaust leak in engine compartment?
  240. 5W-30 Vs 10W30 for the cold winter?
  241. trans delays shift
  242. Rebuilt motor for an 85
  243. 87 Eldo w 35,000 mi, Change tran fluid?
  244. Fuel Injector Impedance - High/Low
  245. How to make a wooden Engine Support Fixture J-28467
  246. 4.1 Coolant Leak from block-PLEASE HELP!
  247. 84 coupe deville fan shroud
  248. Mileage and Power loss, again.
  249. 4.9 valve cover gasket
  250. C-v joint