: HT4100 4.1, 4.5, 4.9



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