: HT4100 4.1, 4.5, 4.9



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