: HT4100 4.1, 4.5, 4.9



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  1. Piston Rings
  2. Startup problem
  3. Dumb Tool Question?
  4. Intake on a Deville...
  5. now what ?
  6. EDAHALL! How do i post sound clips of my FLOWMASTER 40 SERIES delta with the HT4100
  7. Delco vs. Others
  8. Needle in a haystack E53
  9. Will a HT4100 go into an 88 Deville?
  10. A little oil here and a Little oil there
  11. How do you advance timing?
  12. 4.9L '92 Knocking...or missing, help!
  13. Ticking
  14. Rebuilding an HT4100
  15. Engine Swap
  16. Timing Questions...
  17. '90 DeVille 4.5L "hunts" for curb idle
  18. What is most likely source of oil leak?
  19. fuel system??
  20. collectors,bbob anyone,long term storage
  21. Trouble with O2 Sensor
  22. Oil Light
  23. Engine Oil Additive to stop leaks?!?
  24. Got a Reply! on HT4100 TO 4500 Conversion!
  25. Performance Mufflers for 4.9??
  26. Mobil 1 Extended Performance? BBob!
  27. Code 33 Help!!!!
  28. Engine Idle and "almost" stalling problems
  29. Boosting HT4100 Performance
  30. Benefit of using higher mileage vehicle oil?
  31. Exhaust Condensation
  32. bad throttle response
  33. timing newbbb
  34. Does it ever Stop!!!Tuned up and Tuned out
  35. Engine miss at highway speeds.
  36. Mind boggler engine noise
  37. 91 4.9 Excessive Fuel Consumption
  38. 4.5 tbi- performance stuff??
  39. new to me 85 coupe Deville
  40. HELP! 1990 seville shifts to 3rd and freewheels
  41. Engine reliability?
  42. Rough Idle and Missing...
  43. 1992 DeVille Misfiring, or something.
  44. Bad computer? Maybe
  45. air pump to fan to crunk v belt
  46. Can 4.1 be replaced with 305 fuel Injected?
  47. AMAZING fix for hesitation, bad milage
  48. Issues with vacuum lines, Battery light, all in this issue of the 2dfx PMS Thread!
  49. coolant temp light???
  50. 4.9 Fuel Filter clogging...
  51. cadillac eldorado 1991 4.9
  52. ISC Unpluged , wont idle
  53. Loose EGR tube
  54. HT4100 swap. 4.5 or 4.9?
  55. Typical Driveability Problem - 90 Deville
  56. Engine Fire!!! Why Me???
  57. dieseling HT4100....
  58. '82 Eldo Engine dying out, Backfiring through throttle body--Bbobynski please help!!!
  59. intermittent problemn
  60. Sparkplugs
  61. Whats The Best Oil for the HT4100???
  62. Need Help
  63. car running rough now
  64. my baby is sick again , why ??????
  65. Eldorado 4.1 motor problem
  66. Minor tune up
  67. '82 vs. '83 Eldo ECM--ARE THEY INTERCHANGEABLE?!? HELP!!!!
  68. Stupid question for smart people.
  69. Will 4.5 exhaust manifolds fit the HT4100?
  70. '85 eldo 4.1 head leak
  71. OIL Leak??????
  72. 95 deville temp.
  73. 3 questions for all you experts.
  74. 1986 4.1 rebuiled upgrades for more reliability.
  75. Idle Relearn Debate
  76. Fuel Filter Location - 85 Deville (Front Wheel)
  77. HT4100 FLOWMASTER 40series delta flow sound clip
  78. 85 Deville 4100 - Problems Galore
  79. Change Oil Light
  80. compatibility part 2
  81. Please REad need answer ASAP
  82. READ THIS ONE! \/\/ high idle
  83. 90 Deville-surging, missing, after it is warmed up
  84. ECM killing the Injectors?
  85. Someone tell me what a 'transaxle range switch' is!
  86. Electrical problem. Car won't start.
  87. my baby is sick and wont get better :(
  88. Thinking about replacing the 4.9L
  89. Accel Fuel Injectors
  90. I have 2 questions.
  91. Subtle rattling noise possibly from transmission
  92. Redline/shiftpoints for 4.5
  93. two questions pedal and ...
  94. valve spring rates
  95. I wanna know as many 0-60 times as possible!!
  96. Performance Parts for 4.9
  97. 92 Sedan Deville
  98. Car runs hot during long trips
  99. Radiator woes...
  100. How Many of You With Dead Injectors??
  101. 4.9 /Northstar
  102. Coolant shelf life?? No good after 2 years?
  103. compatibility???
  104. Exhaust Options? (photos)
  105. engine oil supplement ?
  106. 4.5 Engine: one dead others dying
  107. air intake mod?
  108. 4100 dual exhaust anyone????
  109. 93 deville heating problem
  110. E98 Isc?
  111. well
  112. High Mileage 4.9L Problems (desperate help needed)
  113. Missing Oil Pump O-ring On Ht4100
  114. 4.9l Deville e41 troubleshooting
  115. ISC RPM out of Range (P030)
  116. Clicking sound from valve covers?
  117. Oh no! trannys slipping
  118. 4.9L Drain Plug Leaking after Coolant Flush -- Help!
  119. 4.9 in rwd configuration?
  120. Fuel Pressure Regulator location?
  121. 4.9L engine low power
  122. here is a good one
  123. rocker arm pivot support
  124. new engine
  125. valve lifter?
  126. please dont be head gasket!!
  127. Starter Removal
  128. module needs ground?
  129. 4.1 vs 4.9
  130. well damn
  131. 4.9 Misfire
  132. P012 bad hall sensor or pick up coil?
  133. Rebuilt Ht4100 With Less Power
  134. Coolant drain locations for a 4.9 (93 SDV)
  135. Metal hose running into side of cat, what is it?
  136. Pulled plugs and compression test *pics*
  137. rip of cat conv and egr??
  138. 4100 coolant capacity
  139. 4.5L A.I.R. Error Code
  140. Increasing Horsepower in 1992 Deville
  141. 4100 Help!!!
  142. Just craps out when I give it gas
  143. He said my cams were out of time....
  144. 4.9 bearing thump
  145. Final Choice: Dynomax SuperTurbos VS. Summit Turbos
  146. Knocking when I give gas to the engine Any one know?!!!
  147. 1991 Cadillac Deville Misfiring
  148. 4.1 engine weight and application ?
  149. Timing advance and still run on MidGrade??
  150. 1990 Eldorado water pump removal help
  151. junkyard ht4100
  152. 1989 4.5L no start when cold. At witts end
  153. Engine runs poorly
  154. 4.5 Engine Woes
  155. Do it right once ....Never see it again
  156. 84Eldo 4.1 won't start
  157. 4.9 Died Again
  158. 4.9L Volcano!!!!
  159. Now I'm getting code 38! What gives?
  160. '84 4.1 running VERY rich, PLEASE HELP!!!!
  161. E30 on Fleetwood 1990
  162. Need Some Help
  163. What's this coming or going out of my cat. converter?
  164. Draining ALL the coolant!!
  165. What's the name of the device (?pump?) under on my 86 deville
  166. car running rich messing up oxygen sensor!
  167. no oil pressure
  168. 90 4.5 Runs Great till it warms up then brakes up.
  169. 4100 tuneing
  170. Engine has a hard time running
  171. i had it out with the cooling system today
  172. temperature erratic
  173. 95 4.9L #7 Cylinder dead, Injector?
  174. 4.9 Cylinder head removal questions
  175. Coolant change.Time or mileage dependant?
  176. Anti-Freeze Coming out of Heater?(fogging up windows)
  177. i changed everything almost ugghh
  178. 4.9L build-up
  179. stuck valve?
  180. I Need a bolt can you help me?
  181. update on my '82
  182. E39 Vcc
  183. WTF is going on!!!(engine runnin crazy!)
  184. 4.1 Low compression
  185. OBD code
  186. popping from carb..
  187. 1984 Having Coooold Start Problems.
  188. won't start when hot
  189. 4100 Heads For Sale
  190. [B][U]4.9 L Performance, 10" Round Air Cleaner[/B][/U]
  191. Head Gaskets or Complete Valve Job
  192. 4100 head bolts
  193. Now this is really weird to me!
  194. 84' seville timing
  195. 4.9 no longer starts
  196. ht4100 loosing power and e codes
  197. 4.1 running rich
  198. Car surges when accelerating
  199. 4.9 HEI ignition
  200. 93 eldorado vs. 92 coupe deville
  201. 4.5 Pinging
  202. Air Mix Door problem code F40
  203. Caddi still not starting
  204. 95 Deville 4.9, Low oil pressure warning
  205. im so cold
  206. Fuel lines
  207. '93 DeVille Gas Mileage Questions
  208. Question for Kcnewell
  209. my '85 FWB died on the interstate...fuel pump?
  210. throttle body cleaning????
  211. another sickening creation of mine!
  212. Coolant supplement
  213. backfiring in park
  214. 4.5 oil pan-bolts gone pan stays on
  215. Crazy overheating problem
  216. Weird Problem
  217. Need to find honest and expert mechanic in Saint Louis Help
  218. 84 Eldorado engine overheating problem
  219. Resurection of a '94 4.9--Advice please!
  220. Jr Shift kit 1-2 rpm shift? but my rebuilt transmission seems great :)
  221. 4.9 low oil pressure warning after head gaskets
  222. Backfiring from the start
  223. I really need help on this.... engine overall performs better, gas millage bad...
  224. 4.9l Engine Knocks when Started
  225. MYSTERY 94'deville water pump
  226. Rattling Rattling Rattling !!
  227. 89 Fleetwood no problems with overheating then 3 days ago leaking antifreeze......
  228. 90-92 350 TBI into 80's Fleetwood Brougham ?
  229. Possible northstar upgrade?
  230. Ignition module failing?
  231. plug wire confusion
  232. please help 4100 problem
  233. advice
  234. 4.5 no heat
  235. 4.1 Runnin a Little Hot at Idle
  236. I hope it's not too late!
  237. 4.1 Cad. Fleetwood Brougham [Tranny Question]
  238. Just installed new M.A.P. sensor now car doesn't even start!
  239. Help With 4100
  240. Help Please Va (engine Problem)
  241. ATF Generic or Name brand???
  242. 1985 deville, coolant in my oil, help
  243. help me bbobynski 4.5 lack of power
  244. '92 4.9 torque converter problem
  245. Car Stall when u hit brake at the stop light sometime
  246. Oil Leaking
  247. smog problems with 84 el dorado timing marks
  248. Help
  249. Quick question: Cradle to cradle / Rear engine/trans mount bolts
  250. Rare Cadillac Options? NM8