: HT4100 4.1, 4.5, 4.9



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