: HT4100 4.1, 4.5, 4.9



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