: HT4100 4.1, 4.5, 4.9



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