: HT4100 4.1, 4.5, 4.9



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  1. Lucas oil treatment?
  2. Piston Rings
  3. Startup problem
  4. Dumb Tool Question?
  5. Intake on a Deville...
  6. now what ?
  7. EDAHALL! How do i post sound clips of my FLOWMASTER 40 SERIES delta with the HT4100
  8. Delco vs. Others
  9. Needle in a haystack E53
  10. Will a HT4100 go into an 88 Deville?
  11. A little oil here and a Little oil there
  12. How do you advance timing?
  13. 4.9L '92 Knocking...or missing, help!
  14. Ticking
  15. Rebuilding an HT4100
  16. Engine Swap
  17. Timing Questions...
  18. '90 DeVille 4.5L "hunts" for curb idle
  19. What is most likely source of oil leak?
  20. fuel system??
  21. collectors,bbob anyone,long term storage
  22. Trouble with O2 Sensor
  23. Oil Light
  24. Engine Oil Additive to stop leaks?!?
  25. Got a Reply! on HT4100 TO 4500 Conversion!
  26. Performance Mufflers for 4.9??
  27. Mobil 1 Extended Performance? BBob!
  28. Code 33 Help!!!!
  29. Engine Idle and "almost" stalling problems
  30. Boosting HT4100 Performance
  31. Benefit of using higher mileage vehicle oil?
  32. Exhaust Condensation
  33. bad throttle response
  34. timing newbbb
  35. Does it ever Stop!!!Tuned up and Tuned out
  36. Engine miss at highway speeds.
  37. Mind boggler engine noise
  38. 91 4.9 Excessive Fuel Consumption
  39. 4.5 tbi- performance stuff??
  40. new to me 85 coupe Deville
  41. HELP! 1990 seville shifts to 3rd and freewheels
  42. Engine reliability?
  43. Rough Idle and Missing...
  44. 1992 DeVille Misfiring, or something.
  45. Bad computer? Maybe
  46. air pump to fan to crunk v belt
  47. Can 4.1 be replaced with 305 fuel Injected?
  48. AMAZING fix for hesitation, bad milage
  49. Issues with vacuum lines, Battery light, all in this issue of the 2dfx PMS Thread!
  50. coolant temp light???
  51. 4.9 Fuel Filter clogging...
  52. cadillac eldorado 1991 4.9
  53. ISC Unpluged , wont idle
  54. Loose EGR tube
  55. HT4100 swap. 4.5 or 4.9?
  56. Typical Driveability Problem - 90 Deville
  57. Engine Fire!!! Why Me???
  58. dieseling HT4100....
  59. '82 Eldo Engine dying out, Backfiring through throttle body--Bbobynski please help!!!
  60. intermittent problemn
  61. Sparkplugs
  62. Whats The Best Oil for the HT4100???
  63. Need Help
  64. car running rough now
  65. my baby is sick again , why ??????
  66. Eldorado 4.1 motor problem
  67. Minor tune up
  68. '82 vs. '83 Eldo ECM--ARE THEY INTERCHANGEABLE?!? HELP!!!!
  69. Stupid question for smart people.
  70. Will 4.5 exhaust manifolds fit the HT4100?
  71. '85 eldo 4.1 head leak
  72. OIL Leak??????
  73. 95 deville temp.
  74. 3 questions for all you experts.
  75. 1986 4.1 rebuiled upgrades for more reliability.
  76. Idle Relearn Debate
  77. Fuel Filter Location - 85 Deville (Front Wheel)
  78. HT4100 FLOWMASTER 40series delta flow sound clip
  79. 85 Deville 4100 - Problems Galore
  80. Change Oil Light
  81. compatibility part 2
  82. Please REad need answer ASAP
  83. READ THIS ONE! \/\/ high idle
  84. 90 Deville-surging, missing, after it is warmed up
  85. ECM killing the Injectors?
  86. Someone tell me what a 'transaxle range switch' is!
  87. Electrical problem. Car won't start.
  88. my baby is sick and wont get better :(
  89. Thinking about replacing the 4.9L
  90. Accel Fuel Injectors
  91. I have 2 questions.
  92. Subtle rattling noise possibly from transmission
  93. Redline/shiftpoints for 4.5
  94. two questions pedal and ...
  95. valve spring rates
  96. I wanna know as many 0-60 times as possible!!
  97. Performance Parts for 4.9
  98. 92 Sedan Deville
  99. Car runs hot during long trips
  100. Radiator woes...
  101. How Many of You With Dead Injectors??
  102. 4.9 /Northstar
  103. Coolant shelf life?? No good after 2 years?
  104. compatibility???
  105. Exhaust Options? (photos)
  106. engine oil supplement ?
  107. 4.5 Engine: one dead others dying
  108. air intake mod?
  109. 4100 dual exhaust anyone????
  110. 93 deville heating problem
  111. E98 Isc?
  112. well
  113. High Mileage 4.9L Problems (desperate help needed)
  114. Missing Oil Pump O-ring On Ht4100
  115. 4.9l Deville e41 troubleshooting
  116. ISC RPM out of Range (P030)
  117. Clicking sound from valve covers?
  118. Oh no! trannys slipping
  119. 4.9L Drain Plug Leaking after Coolant Flush -- Help!
  120. 4.9 in rwd configuration?
  121. Fuel Pressure Regulator location?
  122. 4.9L engine low power
  123. here is a good one
  124. rocker arm pivot support
  125. new engine
  126. valve lifter?
  127. please dont be head gasket!!
  128. Starter Removal
  129. module needs ground?
  130. 4.1 vs 4.9
  131. well damn
  132. 4.9 Misfire
  133. P012 bad hall sensor or pick up coil?
  134. Rebuilt Ht4100 With Less Power
  135. Coolant drain locations for a 4.9 (93 SDV)
  136. Metal hose running into side of cat, what is it?
  137. Pulled plugs and compression test *pics*
  138. rip of cat conv and egr??
  139. 4100 coolant capacity
  140. 4.5L A.I.R. Error Code
  141. Increasing Horsepower in 1992 Deville
  142. 4100 Help!!!
  143. Just craps out when I give it gas
  144. He said my cams were out of time....
  145. 4.9 bearing thump
  146. Final Choice: Dynomax SuperTurbos VS. Summit Turbos
  147. Knocking when I give gas to the engine Any one know?!!!
  148. 1991 Cadillac Deville Misfiring
  149. 4.1 engine weight and application ?
  150. Timing advance and still run on MidGrade??
  151. 1990 Eldorado water pump removal help
  152. junkyard ht4100
  153. 1989 4.5L no start when cold. At witts end
  154. Engine runs poorly
  155. 4.5 Engine Woes
  156. Do it right once ....Never see it again
  157. 84Eldo 4.1 won't start
  158. 4.9 Died Again
  159. 4.9L Volcano!!!!
  160. Now I'm getting code 38! What gives?
  161. '84 4.1 running VERY rich, PLEASE HELP!!!!
  162. E30 on Fleetwood 1990
  163. Need Some Help
  164. What's this coming or going out of my cat. converter?
  165. Draining ALL the coolant!!
  166. What's the name of the device (?pump?) under on my 86 deville
  167. car running rich messing up oxygen sensor!
  168. no oil pressure
  169. 90 4.5 Runs Great till it warms up then brakes up.
  170. 4100 tuneing
  171. Engine has a hard time running
  172. i had it out with the cooling system today
  173. temperature erratic
  174. 95 4.9L #7 Cylinder dead, Injector?
  175. 4.9 Cylinder head removal questions
  176. Coolant change.Time or mileage dependant?
  177. Anti-Freeze Coming out of Heater?(fogging up windows)
  178. i changed everything almost ugghh
  179. 4.9L build-up
  180. stuck valve?
  181. I Need a bolt can you help me?
  182. update on my '82
  183. E39 Vcc
  184. WTF is going on!!!(engine runnin crazy!)
  185. 4.1 Low compression
  186. OBD code
  187. popping from carb..
  188. 1984 Having Coooold Start Problems.
  189. won't start when hot
  190. 4100 Heads For Sale
  191. [B][U]4.9 L Performance, 10" Round Air Cleaner[/B][/U]
  192. Head Gaskets or Complete Valve Job
  193. 4100 head bolts
  194. Now this is really weird to me!
  195. 84' seville timing
  196. 4.9 no longer starts
  197. ht4100 loosing power and e codes
  198. 4.1 running rich
  199. Car surges when accelerating
  200. 4.9 HEI ignition
  201. 93 eldorado vs. 92 coupe deville
  202. 4.5 Pinging
  203. Air Mix Door problem code F40
  204. Caddi still not starting
  205. 95 Deville 4.9, Low oil pressure warning
  206. im so cold
  207. Fuel lines
  208. '93 DeVille Gas Mileage Questions
  209. Question for Kcnewell
  210. my '85 FWB died on the interstate...fuel pump?
  211. throttle body cleaning????
  212. another sickening creation of mine!
  213. Coolant supplement
  214. backfiring in park
  215. 4.5 oil pan-bolts gone pan stays on
  216. Crazy overheating problem
  217. Weird Problem
  218. Need to find honest and expert mechanic in Saint Louis Help
  219. 84 Eldorado engine overheating problem
  220. Resurection of a '94 4.9--Advice please!
  221. Jr Shift kit 1-2 rpm shift? but my rebuilt transmission seems great :)
  222. 4.9 low oil pressure warning after head gaskets
  223. Backfiring from the start
  224. I really need help on this.... engine overall performs better, gas millage bad...
  225. 4.9l Engine Knocks when Started
  226. MYSTERY 94'deville water pump
  227. Rattling Rattling Rattling !!
  228. 89 Fleetwood no problems with overheating then 3 days ago leaking antifreeze......
  229. 90-92 350 TBI into 80's Fleetwood Brougham ?
  230. Possible northstar upgrade?
  231. Ignition module failing?
  232. plug wire confusion
  233. please help 4100 problem
  234. advice
  235. 4.5 no heat
  236. 4.1 Runnin a Little Hot at Idle
  237. I hope it's not too late!
  238. 4.1 Cad. Fleetwood Brougham [Tranny Question]
  239. Just installed new M.A.P. sensor now car doesn't even start!
  240. Help With 4100
  241. Help Please Va (engine Problem)
  242. ATF Generic or Name brand???
  243. 1985 deville, coolant in my oil, help
  244. help me bbobynski 4.5 lack of power
  245. '92 4.9 torque converter problem
  246. Car Stall when u hit brake at the stop light sometime
  247. Oil Leaking
  248. smog problems with 84 el dorado timing marks
  249. Help
  250. Quick question: Cradle to cradle / Rear engine/trans mount bolts