: HT4100 4.1, 4.5, 4.9



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  1. Eldorado 4.1 motor problem
  2. Minor tune up
  3. '82 vs. '83 Eldo ECM--ARE THEY INTERCHANGEABLE?!? HELP!!!!
  4. Stupid question for smart people.
  5. Will 4.5 exhaust manifolds fit the HT4100?
  6. '85 eldo 4.1 head leak
  7. OIL Leak??????
  8. 95 deville temp.
  9. 3 questions for all you experts.
  10. 1986 4.1 rebuiled upgrades for more reliability.
  11. Idle Relearn Debate
  12. Fuel Filter Location - 85 Deville (Front Wheel)
  13. HT4100 FLOWMASTER 40series delta flow sound clip
  14. 85 Deville 4100 - Problems Galore
  15. Change Oil Light
  16. compatibility part 2
  17. Please REad need answer ASAP
  18. READ THIS ONE! \/\/ high idle
  19. 90 Deville-surging, missing, after it is warmed up
  20. ECM killing the Injectors?
  21. Someone tell me what a 'transaxle range switch' is!
  22. Electrical problem. Car won't start.
  23. my baby is sick and wont get better :(
  24. Thinking about replacing the 4.9L
  25. Accel Fuel Injectors
  26. I have 2 questions.
  27. Subtle rattling noise possibly from transmission
  28. Redline/shiftpoints for 4.5
  29. two questions pedal and ...
  30. valve spring rates
  31. I wanna know as many 0-60 times as possible!!
  32. Performance Parts for 4.9
  33. 92 Sedan Deville
  34. Car runs hot during long trips
  35. Radiator woes...
  36. How Many of You With Dead Injectors??
  37. 4.9 /Northstar
  38. Coolant shelf life?? No good after 2 years?
  39. compatibility???
  40. Exhaust Options? (photos)
  41. engine oil supplement ?
  42. 4.5 Engine: one dead others dying
  43. air intake mod?
  44. 4100 dual exhaust anyone????
  45. 93 deville heating problem
  46. E98 Isc?
  47. well
  48. High Mileage 4.9L Problems (desperate help needed)
  49. Missing Oil Pump O-ring On Ht4100
  50. 4.9l Deville e41 troubleshooting
  51. ISC RPM out of Range (P030)
  52. Clicking sound from valve covers?
  53. Oh no! trannys slipping
  54. 4.9L Drain Plug Leaking after Coolant Flush -- Help!
  55. 4.9 in rwd configuration?
  56. Fuel Pressure Regulator location?
  57. 4.9L engine low power
  58. here is a good one
  59. rocker arm pivot support
  60. new engine
  61. valve lifter?
  62. please dont be head gasket!!
  63. Starter Removal
  64. module needs ground?
  65. 4.1 vs 4.9
  66. well damn
  67. 4.9 Misfire
  68. P012 bad hall sensor or pick up coil?
  69. Rebuilt Ht4100 With Less Power
  70. Coolant drain locations for a 4.9 (93 SDV)
  71. Metal hose running into side of cat, what is it?
  72. Pulled plugs and compression test *pics*
  73. rip of cat conv and egr??
  74. 4100 coolant capacity
  75. 4.5L A.I.R. Error Code
  76. Increasing Horsepower in 1992 Deville
  77. 4100 Help!!!
  78. Just craps out when I give it gas
  79. He said my cams were out of time....
  80. 4.9 bearing thump
  81. Final Choice: Dynomax SuperTurbos VS. Summit Turbos
  82. Knocking when I give gas to the engine Any one know?!!!
  83. 1991 Cadillac Deville Misfiring
  84. 4.1 engine weight and application ?
  85. Timing advance and still run on MidGrade??
  86. 1990 Eldorado water pump removal help
  87. junkyard ht4100
  88. 1989 4.5L no start when cold. At witts end
  89. Engine runs poorly
  90. 4.5 Engine Woes
  91. Do it right once ....Never see it again
  92. 84Eldo 4.1 won't start
  93. 4.9 Died Again
  94. 4.9L Volcano!!!!
  95. Now I'm getting code 38! What gives?
  96. '84 4.1 running VERY rich, PLEASE HELP!!!!
  97. E30 on Fleetwood 1990
  98. Need Some Help
  99. What's this coming or going out of my cat. converter?
  100. Draining ALL the coolant!!
  101. What's the name of the device (?pump?) under on my 86 deville
  102. car running rich messing up oxygen sensor!
  103. no oil pressure
  104. 90 4.5 Runs Great till it warms up then brakes up.
  105. 4100 tuneing
  106. Engine has a hard time running
  107. i had it out with the cooling system today
  108. temperature erratic
  109. 95 4.9L #7 Cylinder dead, Injector?
  110. 4.9 Cylinder head removal questions
  111. Coolant change.Time or mileage dependant?
  112. Anti-Freeze Coming out of Heater?(fogging up windows)
  113. i changed everything almost ugghh
  114. 4.9L build-up
  115. stuck valve?
  116. I Need a bolt can you help me?
  117. update on my '82
  118. E39 Vcc
  119. WTF is going on!!!(engine runnin crazy!)
  120. 4.1 Low compression
  121. OBD code
  122. popping from carb..
  123. 1984 Having Coooold Start Problems.
  124. won't start when hot
  125. 4100 Heads For Sale
  126. [B][U]4.9 L Performance, 10" Round Air Cleaner[/B][/U]
  127. Head Gaskets or Complete Valve Job
  128. 4100 head bolts
  129. Now this is really weird to me!
  130. 84' seville timing
  131. 4.9 no longer starts
  132. ht4100 loosing power and e codes
  133. 4.1 running rich
  134. Car surges when accelerating
  135. 4.9 HEI ignition
  136. 93 eldorado vs. 92 coupe deville
  137. 4.5 Pinging
  138. Air Mix Door problem code F40
  139. Caddi still not starting
  140. 95 Deville 4.9, Low oil pressure warning
  141. im so cold
  142. Fuel lines
  143. '93 DeVille Gas Mileage Questions
  144. Question for Kcnewell
  145. my '85 FWB died on the interstate...fuel pump?
  146. throttle body cleaning????
  147. another sickening creation of mine!
  148. Coolant supplement
  149. backfiring in park
  150. 4.5 oil pan-bolts gone pan stays on
  151. Crazy overheating problem
  152. Weird Problem
  153. Need to find honest and expert mechanic in Saint Louis Help
  154. 84 Eldorado engine overheating problem
  155. Resurection of a '94 4.9--Advice please!
  156. Jr Shift kit 1-2 rpm shift? but my rebuilt transmission seems great :)
  157. 4.9 low oil pressure warning after head gaskets
  158. Backfiring from the start
  159. I really need help on this.... engine overall performs better, gas millage bad...
  160. 4.9l Engine Knocks when Started
  161. MYSTERY 94'deville water pump
  162. Rattling Rattling Rattling !!
  163. 89 Fleetwood no problems with overheating then 3 days ago leaking antifreeze......
  164. 90-92 350 TBI into 80's Fleetwood Brougham ?
  165. Possible northstar upgrade?
  166. Ignition module failing?
  167. plug wire confusion
  168. please help 4100 problem
  169. advice
  170. 4.5 no heat
  171. 4.1 Runnin a Little Hot at Idle
  172. I hope it's not too late!
  173. 4.1 Cad. Fleetwood Brougham [Tranny Question]
  174. Just installed new M.A.P. sensor now car doesn't even start!
  175. Help With 4100
  176. Help Please Va (engine Problem)
  177. ATF Generic or Name brand???
  178. 1985 deville, coolant in my oil, help
  179. help me bbobynski 4.5 lack of power
  180. '92 4.9 torque converter problem
  181. Car Stall when u hit brake at the stop light sometime
  182. Oil Leaking
  183. smog problems with 84 el dorado timing marks
  184. Help
  185. Quick question: Cradle to cradle / Rear engine/trans mount bolts
  186. Rare Cadillac Options? NM8
  187. 4.5 Fuel Filter replacement
  188. Swap 4.1 out 368 in. Can it be done?
  189. fuel filter location
  190. 93 deville water pump
  191. main bearing seel
  192. 4.9 off idle knocking?
  193. How many mile u got out of your 4.1 engine
  194. hard time starting car
  195. Needed help on 4.1 engine system
  196. 4.9 Idle Learn - Is this honestly it?
  197. 4.5 bad gas mileage and lack of power
  198. Flush at 20k ?Break in proceedure?
  199. 4.9 rpm bounce & bad mpg
  200. 91 4.9 hesitation EGR?
  201. power to fuel injector
  202. HT4100, no power uphill
  203. fuel regulator
  204. Inner wheel tire is spliting
  205. HT4100 Damper Bolt
  206. My car runs the same with or without the egr hooked up
  207. Superchip VS Timing advance
  208. mph limiter
  209. Highway millage.... bad....
  210. 88 Eldorado - rough idle, intermittent miss
  211. 4.1vs4.9
  212. Tranny Blew out
  213. Transmission wiring diag.
  214. Car not starting, please help
  215. So what do you like about your 4.9?
  216. 4.9 EGR system....
  217. Th 350
  218. problems removing oil pan - Please Help!
  219. 4.1 to 307 swap question
  220. Exhaust question once again
  221. BBob and anyone else, whats the say on synthetic?
  222. HEI In-cap Coil - What our the differences?
  223. tranny warmup?
  224. These 4.9s have some power!
  225. water pump, water pump, water pump,
  226. 1990 DeVille has" the shakes" and revs on its own
  227. 4.9 pinging not under a load
  228. Barometric Pressure Sensor location
  229. Exhaust leak in engine compartment?
  230. 5W-30 Vs 10W30 for the cold winter?
  231. trans delays shift
  232. Rebuilt motor for an 85
  233. 87 Eldo w 35,000 mi, Change tran fluid?
  234. Fuel Injector Impedance - High/Low
  235. How to make a wooden Engine Support Fixture J-28467
  236. 4.1 Coolant Leak from block-PLEASE HELP!
  237. 84 coupe deville fan shroud
  238. Mileage and Power loss, again.
  239. 4.9 valve cover gasket
  240. C-v joint
  241. 82' couple 4100 - accelerating by itslef - HELP
  242. Do I have to change coolant?
  243. 1990 4.5L Eldroado Engine running rough
  244. 4.9 speed limiter...
  245. Is this the right stuff, going to attempt this weekend
  246. TPS setting
  247. Tune up on a 89 Deville w/ 4.5
  248. Quick Question
  249. 92 eldorado E0085 dtc help pls
  250. Engine Rattle