: HT4100 4.1, 4.5, 4.9



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  1. 94 Deville 4.9L ...P030 and some other codes....
  2. New to the forum....
  3. Who sells a good CA legal catalytic conv. ?? - We have very strict Smog tests here.
  4. Are these holes in the airfilter housing supposed to have something... '84 HT4100 TBI
  5. New Deville Clips
  6. 84 cadillac seville chargeing problem
  7. 1992 sedan deville head gaskets?
  8. 92 Deville Starter heat shied
  9. 4.5 intake gasket
  10. VSS location?
  11. How do you Remove&Clean Throttle Body, engines too big to see back there.
  12. No More Poop On Coupe ! Yea !
  13. 88 eldo 4.5 running temp and code E027 ?'s
  14. 93 Seville radiator fan
  15. PO41 No Cam reference Signal - broke down on trip
  16. Is the exhaust layout identical per the 1983 and 1984 DeVille 4.1 V8
  17. Aftermarket Cat
  18. Why doesn't an '84 DeVille F'ING show up on most of the online catalogs?
  19. What's the most universal oil filter wrench you have used?
  20. 91' deville
  21. 90 deville water pump?
  22. time for a tune up.. whats involved.
  23. Oil Pressure Light just came on - 4.1 V-8!
  24. CAN you change oil filter withOUT draining oil pan?
  25. 83 coupe 4100 ( 4.1) injector problems
  26. Slow Battery Drain
  27. 4.5 liter misfiring on acceleration, rough idle
  28. HT4100 EGR schematics needed to figure out smog issue, BAD F'ING NEWS
  29. Change of Plans! I'm not supercharging anything...
  30. torque convertors for teh 4t60
  31. BARO on 4.9?
  32. Knocking/Rattling From Engine
  33. injector duty cycle
  34. Dangers of flsuhing HT4100 with motor Flush and Supertech oil.
  35. Fuel pressure
  36. Newbie needs help with 87 seville 4.1L
  37. Can A 4.1 Trans be Used in a Long?...
  38. anyone know????
  39. 4.1 wiring from distributor to plugs HELP ASAP
  40. 84 Eldorado 4.1 V8 (HT4100) "E" engine, M57 tranny, Noise from lower end
  41. remove power steering pulley
  42. coolant temperature
  43. GM Reliability Testing?
  44. 84 SDV RWD 4.1 Intake gasket
  45. Is single 3" exhaust too big for a 4.1L @ 200 HP?
  46. Fuel Injector Replacement
  47. HELP!! 91 Eldo stalling problem
  48. used E C M ... from junk yard
  49. How much booooooooost PSI can these 4.1's take? What gives in under pressure?
  50. Bad ECU?(BBOB)
  51. WHAT THE **** IS EVERYONE's FAVORITE MUFFLER/CAT Pipe SETUP?
  52. 4.9 oil pump in 4.5?
  53. does ECU prevent engine braking
  54. What The Hell Is That Thing!?!?!?!
  55. Cleaning and tune up junk on an 88 4.5L deville
  56. 1990 Deville won't start HELP
  57. What kind of Exhaust systems do the 84 SDV 4.1Liter motors like to breath through?
  58. Took a Vid in my 91 Deville
  59. Knocking in the 4.9
  60. 94 deville questions
  61. Best way to flush system (84 HT4100 SDV)
  62. Info on GM Goodwrench replacement engine, HT4100
  63. And Yet Another ISC Motor Question
  64. Car has no spark
  65. idle rpm
  66. Oil leak
  67. 1990 4.5l air system problem
  68. Oxygen Sensor Broke?
  69. plug wires??
  70. isc motor question
  71. HT 4100 Replacement Source?
  72. 4.5L Valve Pinging / Clattering
  73. problem while coasting
  74. Rough Idle, 87 4.1 Eldorado
  75. What water??
  76. throwing my belt off
  77. Which models come with the 4.9 V8?
  78. Rough running 92 Eldo
  79. 4100 D F I injector problems... looking for solutions
  80. 4.9 codes
  81. Best way to clean my throttle body?
  82. 85 Eldorado 4.1 help!!
  83. Engine Oil Questions - Bboby
  84. Finally. . .Solved Intake Backfire
  85. Whats The AVG MPG Readout for this forum
  86. Engine Idles 10 Seconds AFTER Ignition Shut-Off!!
  87. Weird 4.9 noise (not in archives)
  88. what kinda maintenance should i do
  89. Bbob...Whats the difference!?!
  90. Grounds Anyone?
  91. Ht4100 Backfires Out Of Fuel Injection
  92. Check Fuel Pump Amps draw ? Bob ?
  93. 90 Deville code help
  94. Starts hard when it gets hot
  95. Gas milage back, more power, more smooth..
  96. Rpm/idle Problems
  97. Oil Filter Capacity?
  98. Getting a Attitude Again-missing
  99. Is There a good quick fix for oil consumption?
  100. looking for opinions on best oil/synthetic to use in a 4.1
  101. I Don't Even Know Where To Start
  102. 93 Deville Experts Please e26 239 e47 e97 e98 f32 stalls
  103. Fastest 4.9 Ever?
  104. 93 Sedan 4.9 F32, archives no help
  105. Change spark PLugs
  106. good compression
  107. Where on the Web can I Find AC Delco Spark Plugs Cheap
  108. Changed Oil Pan Gasket, Still Leaking (4.1)
  109. Cam sensor replacement?
  110. Oil drain plug stuck on 4.5!
  111. i want to make sure
  112. Looking for used v-8 intake
  113. Fuel Economy and Engine Power
  114. 85 seville transmission
  115. Rotella coolant.
  116. Noise Under Hood When Turning Ignition On and Off
  117. Coolant Pellets? How Many?
  118. 1990 bcm code e-47
  119. please help
  120. 4-9 Fuel Pump Psi
  121. Engine Knock
  122. help my overheat um i think
  123. Is this the same knock as the 4.9 knock? It is an HT4100
  124. 4.9 valve cover
  125. Porting on HT4100's
  126. 4.5L Idle Problem Solved!! Thanks, bbobynski
  127. 84 deville died, won't restart ht4100
  128. surging power
  129. Air Management System Problem
  130. '85 Deville running rich
  131. 4.9 60k knock gone!!!!!!!!!!!!!!!!!
  132. Install Separate Thermostatic Fan Control?
  133. 4.1 Eldorado Oil Pan Gasket Change; MAJOR PAIN!
  134. Anyone Need a HT 4100
  135. questions on 4.9l v8
  136. '92 4.9 Stalling after transmission rebuild
  137. Fuel Injectors 94 Deville 4.9L
  138. 4.9L compatable with small block???
  139. 92 seville performance help
  140. Bbob- Open Loop Better Than Closed??
  141. 86 Seville 4.1 advice re removal of water pump
  142. GM parts vs Aftermarket- HT4100
  143. Where's the ALDL on my 88 Deville?
  144. Tranny Woes
  145. 4.9 with 60K knocking, please help!!!!!!!!!!!
  146. ISC Motor &TPS/E30 code
  147. To ILLUMINA!!! RE Performance Parts for 4.9
  148. Transmission
  149. Cleaned egr tubes
  150. 95 deville blown head gasket
  151. Question About Changing Water Pump
  152. Purchased 1984 Sedan Deville
  153. stock 4.9 intake to allante intake comparison
  154. What kind of problems do you get if you have a F32 code
  155. Amsoil for 4.9
  156. 93 weirdo miss
  157. Mixing oils...
  158. What Is A PCM?
  159. What is a BCM?
  160. Redline/Tachometer
  161. HT4100 "Base Timing Mode"
  162. A few 4.x questions
  163. 4.x dyno and comparison questions
  164. '90 Deville 4.5 idle problems
  165. 200R4 slipping real bad
  166. 88 Deville...E30 & EE30 code
  167. 4 prong spark plugs on 4.5
  168. Idle Speed Control Unit
  169. Does Anyone have F codes for a 93 deville
  170. thermostat
  171. Computer/wiring on 4.1L to 4.5L swap
  172. 1988 Deville Fast idle problems 4.5L
  173. 4.5--->4.9? (maybe more)
  174. HT4100 0-60 times!
  175. tranny slipping and e39 vcc
  176. Cheap HPs?
  177. Help!!!My caddy flunked the emmissions test
  178. 92 Help!!!
  179. Left or Right Bank Fuel Imbalance
  180. Engine Misses when cold
  181. The "4.9 liter turbocharger, stage 1" thread.
  182. code19
  183. Code E30 ( NO DASH!!! )
  184. 93 DeVille failed IL CO and HC emissions - need help
  185. Water
  186. OK the 4.9 ECU mods thread ,lets go!
  187. Need information on an engine rebuild
  188. how do i use the codes
  189. intake question
  190. advanced timing
  191. Another one knockin
  192. egr valve
  193. 4.9 engine idle speed...
  194. Blown Head Gasket maybe?????
  195. Ht4100 Flowmaster Sound Clip!!!!!!!
  196. Lucas oil treatment?
  197. Piston Rings
  198. Startup problem
  199. Dumb Tool Question?
  200. Intake on a Deville...
  201. now what ?
  202. EDAHALL! How do i post sound clips of my FLOWMASTER 40 SERIES delta with the HT4100
  203. Delco vs. Others
  204. Needle in a haystack E53
  205. Will a HT4100 go into an 88 Deville?
  206. A little oil here and a Little oil there
  207. How do you advance timing?
  208. 4.9L '92 Knocking...or missing, help!
  209. Ticking
  210. Rebuilding an HT4100
  211. Engine Swap
  212. Timing Questions...
  213. '90 DeVille 4.5L "hunts" for curb idle
  214. What is most likely source of oil leak?
  215. fuel system??
  216. collectors,bbob anyone,long term storage
  217. Trouble with O2 Sensor
  218. Oil Light
  219. Engine Oil Additive to stop leaks?!?
  220. Got a Reply! on HT4100 TO 4500 Conversion!
  221. Performance Mufflers for 4.9??
  222. Mobil 1 Extended Performance? BBob!
  223. Code 33 Help!!!!
  224. Engine Idle and "almost" stalling problems
  225. Boosting HT4100 Performance
  226. Benefit of using higher mileage vehicle oil?
  227. Exhaust Condensation
  228. bad throttle response
  229. timing newbbb
  230. Does it ever Stop!!!Tuned up and Tuned out
  231. Engine miss at highway speeds.
  232. Mind boggler engine noise
  233. 91 4.9 Excessive Fuel Consumption
  234. 4.5 tbi- performance stuff??
  235. new to me 85 coupe Deville
  236. HELP! 1990 seville shifts to 3rd and freewheels
  237. Engine reliability?
  238. Rough Idle and Missing...
  239. 1992 DeVille Misfiring, or something.
  240. Bad computer? Maybe
  241. air pump to fan to crunk v belt
  242. Can 4.1 be replaced with 305 fuel Injected?
  243. AMAZING fix for hesitation, bad milage
  244. Issues with vacuum lines, Battery light, all in this issue of the 2dfx PMS Thread!
  245. coolant temp light???
  246. 4.9 Fuel Filter clogging...
  247. cadillac eldorado 1991 4.9
  248. ISC Unpluged , wont idle
  249. Loose EGR tube
  250. HT4100 swap. 4.5 or 4.9?