: HT4100 4.1, 4.5, 4.9



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  1. HELP!! 91 Eldo stalling problem
  2. used E C M ... from junk yard
  3. How much booooooooost PSI can these 4.1's take? What gives in under pressure?
  4. Bad ECU?(BBOB)
  5. WHAT THE **** IS EVERYONE's FAVORITE MUFFLER/CAT Pipe SETUP?
  6. 4.9 oil pump in 4.5?
  7. does ECU prevent engine braking
  8. What The Hell Is That Thing!?!?!?!
  9. Cleaning and tune up junk on an 88 4.5L deville
  10. 1990 Deville won't start HELP
  11. What kind of Exhaust systems do the 84 SDV 4.1Liter motors like to breath through?
  12. Took a Vid in my 91 Deville
  13. Knocking in the 4.9
  14. 94 deville questions
  15. Best way to flush system (84 HT4100 SDV)
  16. Info on GM Goodwrench replacement engine, HT4100
  17. And Yet Another ISC Motor Question
  18. Car has no spark
  19. idle rpm
  20. Oil leak
  21. 1990 4.5l air system problem
  22. Oxygen Sensor Broke?
  23. plug wires??
  24. isc motor question
  25. HT 4100 Replacement Source?
  26. 4.5L Valve Pinging / Clattering
  27. problem while coasting
  28. Rough Idle, 87 4.1 Eldorado
  29. What water??
  30. throwing my belt off
  31. Which models come with the 4.9 V8?
  32. Rough running 92 Eldo
  33. 4100 D F I injector problems... looking for solutions
  34. 4.9 codes
  35. Best way to clean my throttle body?
  36. 85 Eldorado 4.1 help!!
  37. Engine Oil Questions - Bboby
  38. Finally. . .Solved Intake Backfire
  39. Whats The AVG MPG Readout for this forum
  40. Engine Idles 10 Seconds AFTER Ignition Shut-Off!!
  41. Weird 4.9 noise (not in archives)
  42. what kinda maintenance should i do
  43. Bbob...Whats the difference!?!
  44. Grounds Anyone?
  45. Ht4100 Backfires Out Of Fuel Injection
  46. Check Fuel Pump Amps draw ? Bob ?
  47. 90 Deville code help
  48. Starts hard when it gets hot
  49. Gas milage back, more power, more smooth..
  50. Rpm/idle Problems
  51. Oil Filter Capacity?
  52. Getting a Attitude Again-missing
  53. Is There a good quick fix for oil consumption?
  54. looking for opinions on best oil/synthetic to use in a 4.1
  55. I Don't Even Know Where To Start
  56. 93 Deville Experts Please e26 239 e47 e97 e98 f32 stalls
  57. Fastest 4.9 Ever?
  58. 93 Sedan 4.9 F32, archives no help
  59. Change spark PLugs
  60. good compression
  61. Where on the Web can I Find AC Delco Spark Plugs Cheap
  62. Changed Oil Pan Gasket, Still Leaking (4.1)
  63. Cam sensor replacement?
  64. Oil drain plug stuck on 4.5!
  65. i want to make sure
  66. Looking for used v-8 intake
  67. Fuel Economy and Engine Power
  68. 85 seville transmission
  69. Rotella coolant.
  70. Noise Under Hood When Turning Ignition On and Off
  71. Coolant Pellets? How Many?
  72. 1990 bcm code e-47
  73. please help
  74. 4-9 Fuel Pump Psi
  75. Engine Knock
  76. help my overheat um i think
  77. Is this the same knock as the 4.9 knock? It is an HT4100
  78. 4.9 valve cover
  79. Porting on HT4100's
  80. 4.5L Idle Problem Solved!! Thanks, bbobynski
  81. 84 deville died, won't restart ht4100
  82. surging power
  83. Air Management System Problem
  84. '85 Deville running rich
  85. 4.9 60k knock gone!!!!!!!!!!!!!!!!!
  86. Install Separate Thermostatic Fan Control?
  87. 4.1 Eldorado Oil Pan Gasket Change; MAJOR PAIN!
  88. Anyone Need a HT 4100
  89. questions on 4.9l v8
  90. '92 4.9 Stalling after transmission rebuild
  91. Fuel Injectors 94 Deville 4.9L
  92. 4.9L compatable with small block???
  93. 92 seville performance help
  94. Bbob- Open Loop Better Than Closed??
  95. 86 Seville 4.1 advice re removal of water pump
  96. GM parts vs Aftermarket- HT4100
  97. Where's the ALDL on my 88 Deville?
  98. Tranny Woes
  99. 4.9 with 60K knocking, please help!!!!!!!!!!!
  100. ISC Motor &TPS/E30 code
  101. To ILLUMINA!!! RE Performance Parts for 4.9
  102. Transmission
  103. Cleaned egr tubes
  104. 95 deville blown head gasket
  105. Question About Changing Water Pump
  106. Purchased 1984 Sedan Deville
  107. stock 4.9 intake to allante intake comparison
  108. What kind of problems do you get if you have a F32 code
  109. Amsoil for 4.9
  110. 93 weirdo miss
  111. Mixing oils...
  112. What Is A PCM?
  113. What is a BCM?
  114. Redline/Tachometer
  115. HT4100 "Base Timing Mode"
  116. A few 4.x questions
  117. 4.x dyno and comparison questions
  118. '90 Deville 4.5 idle problems
  119. 200R4 slipping real bad
  120. 88 Deville...E30 & EE30 code
  121. 4 prong spark plugs on 4.5
  122. Idle Speed Control Unit
  123. Does Anyone have F codes for a 93 deville
  124. thermostat
  125. Computer/wiring on 4.1L to 4.5L swap
  126. 1988 Deville Fast idle problems 4.5L
  127. 4.5--->4.9? (maybe more)
  128. HT4100 0-60 times!
  129. tranny slipping and e39 vcc
  130. Cheap HP´s?
  131. Help!!!My caddy flunked the emmissions test
  132. 92 Help!!!
  133. Left or Right Bank Fuel Imbalance
  134. Engine Misses when cold
  135. The "4.9 liter turbocharger, stage 1" thread.
  136. code19
  137. Code E30 ( NO DASH!!! )
  138. 93 DeVille failed IL CO and HC emissions - need help
  139. Water
  140. OK the 4.9 ECU mods thread ,lets go!
  141. Need information on an engine rebuild
  142. how do i use the codes
  143. intake question
  144. advanced timing
  145. Another one knockin
  146. egr valve
  147. 4.9 engine idle speed...
  148. Blown Head Gasket maybe?????
  149. Ht4100 Flowmaster Sound Clip!!!!!!!
  150. Lucas oil treatment?
  151. Piston Rings
  152. Startup problem
  153. Dumb Tool Question?
  154. Intake on a Deville...
  155. now what ?
  156. EDAHALL! How do i post sound clips of my FLOWMASTER 40 SERIES delta with the HT4100
  157. Delco vs. Others
  158. Needle in a haystack E53
  159. Will a HT4100 go into an 88 Deville?
  160. A little oil here and a Little oil there
  161. How do you advance timing?
  162. 4.9L '92 Knocking...or missing, help!
  163. Ticking
  164. Rebuilding an HT4100
  165. Engine Swap
  166. Timing Questions...
  167. '90 DeVille 4.5L "hunts" for curb idle
  168. What is most likely source of oil leak?
  169. fuel system??
  170. collectors,bbob anyone,long term storage
  171. Trouble with O2 Sensor
  172. Oil Light
  173. Engine Oil Additive to stop leaks?!?
  174. Got a Reply! on HT4100 TO 4500 Conversion!
  175. Performance Mufflers for 4.9??
  176. Mobil 1 Extended Performance? BBob!
  177. Code 33 Help!!!!
  178. Engine Idle and "almost" stalling problems
  179. Boosting HT4100 Performance
  180. Benefit of using higher mileage vehicle oil?
  181. Exhaust Condensation
  182. bad throttle response
  183. timing newbbb
  184. Does it ever Stop!!!Tuned up and Tuned out
  185. Engine miss at highway speeds.
  186. Mind boggler engine noise
  187. 91 4.9 Excessive Fuel Consumption
  188. 4.5 tbi- performance stuff??
  189. new to me 85 coupe Deville
  190. HELP! 1990 seville shifts to 3rd and freewheels
  191. Engine reliability?
  192. Rough Idle and Missing...
  193. 1992 DeVille Misfiring, or something.
  194. Bad computer? Maybe
  195. air pump to fan to crunk v belt
  196. Can 4.1 be replaced with 305 fuel Injected?
  197. AMAZING fix for hesitation, bad milage
  198. Issues with vacuum lines, Battery light, all in this issue of the 2dfx PMS Thread!
  199. coolant temp light???
  200. 4.9 Fuel Filter clogging...
  201. cadillac eldorado 1991 4.9
  202. ISC Unpluged , wont idle
  203. Loose EGR tube
  204. HT4100 swap. 4.5 or 4.9?
  205. Typical Driveability Problem - 90 Deville
  206. Engine Fire!!! Why Me???
  207. dieseling HT4100....
  208. '82 Eldo Engine dying out, Backfiring through throttle body--Bbobynski please help!!!
  209. intermittent problemn
  210. Sparkplugs
  211. Whats The Best Oil for the HT4100???
  212. Need Help
  213. car running rough now
  214. my baby is sick again , why ??????
  215. Eldorado 4.1 motor problem
  216. Minor tune up
  217. '82 vs. '83 Eldo ECM--ARE THEY INTERCHANGEABLE?!? HELP!!!!
  218. Stupid question for smart people.
  219. Will 4.5 exhaust manifolds fit the HT4100?
  220. '85 eldo 4.1 head leak
  221. OIL Leak??????
  222. 95 deville temp.
  223. 3 questions for all you experts.
  224. 1986 4.1 rebuiled upgrades for more reliability.
  225. Idle Relearn Debate
  226. Fuel Filter Location - 85 Deville (Front Wheel)
  227. HT4100 FLOWMASTER 40series delta flow sound clip
  228. 85 Deville 4100 - Problems Galore
  229. Change Oil Light
  230. compatibility part 2
  231. Please REad need answer ASAP
  232. READ THIS ONE! \/\/ high idle
  233. 90 Deville-surging, missing, after it is warmed up
  234. ECM killing the Injectors?
  235. Someone tell me what a 'transaxle range switch' is!
  236. Electrical problem. Car won't start.
  237. my baby is sick and wont get better :(
  238. Thinking about replacing the 4.9L
  239. Accel Fuel Injectors
  240. I have 2 questions.
  241. Subtle rattling noise possibly from transmission
  242. Redline/shiftpoints for 4.5
  243. two questions pedal and ...
  244. valve spring rates
  245. I wanna know as many 0-60 times as possible!!
  246. Performance Parts for 4.9
  247. 92 Sedan Deville
  248. Car runs hot during long trips
  249. Radiator woes...
  250. How Many of You With Dead Injectors??