: HT4100 4.1, 4.5, 4.9



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  1. 4.9 Misfire
  2. P012 bad hall sensor or pick up coil?
  3. Rebuilt Ht4100 With Less Power
  4. Coolant drain locations for a 4.9 (93 SDV)
  5. Metal hose running into side of cat, what is it?
  6. Pulled plugs and compression test *pics*
  7. rip of cat conv and egr??
  8. 4100 coolant capacity
  9. 4.5L A.I.R. Error Code
  10. Increasing Horsepower in 1992 Deville
  11. 4100 Help!!!
  12. Just craps out when I give it gas
  13. He said my cams were out of time....
  14. 4.9 bearing thump
  15. Final Choice: Dynomax SuperTurbos VS. Summit Turbos
  16. Knocking when I give gas to the engine Any one know?!!!
  17. 1991 Cadillac Deville Misfiring
  18. 4.1 engine weight and application ?
  19. Timing advance and still run on MidGrade??
  20. 1990 Eldorado water pump removal help
  21. junkyard ht4100
  22. 1989 4.5L no start when cold. At witts end
  23. Engine runs poorly
  24. 4.5 Engine Woes
  25. Do it right once ....Never see it again
  26. 84Eldo 4.1 won't start
  27. 4.9 Died Again
  28. 4.9L Volcano!!!!
  29. Now I'm getting code 38! What gives?
  30. '84 4.1 running VERY rich, PLEASE HELP!!!!
  31. E30 on Fleetwood 1990
  32. Need Some Help
  33. What's this coming or going out of my cat. converter?
  34. Draining ALL the coolant!!
  35. What's the name of the device (?pump?) under on my 86 deville
  36. car running rich messing up oxygen sensor!
  37. no oil pressure
  38. 90 4.5 Runs Great till it warms up then brakes up.
  39. 4100 tuneing
  40. Engine has a hard time running
  41. i had it out with the cooling system today
  42. temperature erratic
  43. 95 4.9L #7 Cylinder dead, Injector?
  44. 4.9 Cylinder head removal questions
  45. Coolant change.Time or mileage dependant?
  46. Anti-Freeze Coming out of Heater?(fogging up windows)
  47. i changed everything almost ugghh
  48. 4.9L build-up
  49. stuck valve?
  50. I Need a bolt can you help me?
  51. update on my '82
  52. E39 Vcc
  53. WTF is going on!!!(engine runnin crazy!)
  54. 4.1 Low compression
  55. OBD code
  56. popping from carb..
  57. 1984 Having Coooold Start Problems.
  58. won't start when hot
  59. 4100 Heads For Sale
  60. [B][U]4.9 L Performance, 10" Round Air Cleaner[/B][/U]
  61. Head Gaskets or Complete Valve Job
  62. 4100 head bolts
  63. Now this is really weird to me!
  64. 84' seville timing
  65. 4.9 no longer starts
  66. ht4100 loosing power and e codes
  67. 4.1 running rich
  68. Car surges when accelerating
  69. 4.9 HEI ignition
  70. 93 eldorado vs. 92 coupe deville
  71. 4.5 Pinging
  72. Air Mix Door problem code F40
  73. Caddi still not starting
  74. 95 Deville 4.9, Low oil pressure warning
  75. im so cold
  76. Fuel lines
  77. '93 DeVille Gas Mileage Questions
  78. Question for Kcnewell
  79. my '85 FWB died on the interstate...fuel pump?
  80. throttle body cleaning????
  81. another sickening creation of mine!
  82. Coolant supplement
  83. backfiring in park
  84. 4.5 oil pan-bolts gone pan stays on
  85. Crazy overheating problem
  86. Weird Problem
  87. Need to find honest and expert mechanic in Saint Louis Help
  88. 84 Eldorado engine overheating problem
  89. Resurection of a '94 4.9--Advice please!
  90. Jr Shift kit 1-2 rpm shift? but my rebuilt transmission seems great :)
  91. 4.9 low oil pressure warning after head gaskets
  92. Backfiring from the start
  93. I really need help on this.... engine overall performs better, gas millage bad...
  94. 4.9l Engine Knocks when Started
  95. MYSTERY 94'deville water pump
  96. Rattling Rattling Rattling !!
  97. 89 Fleetwood no problems with overheating then 3 days ago leaking antifreeze......
  98. 90-92 350 TBI into 80's Fleetwood Brougham ?
  99. Possible northstar upgrade?
  100. Ignition module failing?
  101. plug wire confusion
  102. please help 4100 problem
  103. advice
  104. 4.5 no heat
  105. 4.1 Runnin a Little Hot at Idle
  106. I hope it's not too late!
  107. 4.1 Cad. Fleetwood Brougham [Tranny Question]
  108. Just installed new M.A.P. sensor now car doesn't even start!
  109. Help With 4100
  110. Help Please Va (engine Problem)
  111. ATF Generic or Name brand???
  112. 1985 deville, coolant in my oil, help
  113. help me bbobynski 4.5 lack of power
  114. '92 4.9 torque converter problem
  115. Car Stall when u hit brake at the stop light sometime
  116. Oil Leaking
  117. smog problems with 84 el dorado timing marks
  118. Help
  119. Quick question: Cradle to cradle / Rear engine/trans mount bolts
  120. Rare Cadillac Options? NM8
  121. 4.5 Fuel Filter replacement
  122. Swap 4.1 out 368 in. Can it be done?
  123. fuel filter location
  124. 93 deville water pump
  125. main bearing seel
  126. 4.9 off idle knocking?
  127. How many mile u got out of your 4.1 engine
  128. hard time starting car
  129. Needed help on 4.1 engine system
  130. 4.9 Idle Learn - Is this honestly it?
  131. 4.5 bad gas mileage and lack of power
  132. Flush at 20k ?Break in proceedure?
  133. 4.9 rpm bounce & bad mpg
  134. 91 4.9 hesitation EGR?
  135. power to fuel injector
  136. HT4100, no power uphill
  137. fuel regulator
  138. Inner wheel tire is spliting
  139. HT4100 Damper Bolt
  140. My car runs the same with or without the egr hooked up
  141. Superchip VS Timing advance
  142. mph limiter
  143. Highway millage.... bad....
  144. 88 Eldorado - rough idle, intermittent miss
  145. 4.1vs4.9
  146. Tranny Blew out
  147. Transmission wiring diag.
  148. Car not starting, please help
  149. So what do you like about your 4.9?
  150. 4.9 EGR system....
  151. Th 350
  152. problems removing oil pan - Please Help!
  153. 4.1 to 307 swap question
  154. Exhaust question once again
  155. BBob and anyone else, whats the say on synthetic?
  156. HEI In-cap Coil - What our the differences?
  157. tranny warmup?
  158. These 4.9s have some power!
  159. water pump, water pump, water pump,
  160. 1990 DeVille has" the shakes" and revs on its own
  161. 4.9 pinging not under a load
  162. Barometric Pressure Sensor location
  163. Exhaust leak in engine compartment?
  164. 5W-30 Vs 10W30 for the cold winter?
  165. trans delays shift
  166. Rebuilt motor for an 85
  167. 87 Eldo w 35,000 mi, Change tran fluid?
  168. Fuel Injector Impedance - High/Low
  169. How to make a wooden Engine Support Fixture J-28467
  170. 4.1 Coolant Leak from block-PLEASE HELP!
  171. 84 coupe deville fan shroud
  172. Mileage and Power loss, again.
  173. 4.9 valve cover gasket
  174. C-v joint
  175. 82' couple 4100 - accelerating by itslef - HELP
  176. Do I have to change coolant?
  177. 1990 4.5L Eldroado Engine running rough
  178. 4.9 speed limiter...
  179. Is this the right stuff, going to attempt this weekend
  180. TPS setting
  181. Tune up on a 89 Deville w/ 4.5
  182. Quick Question
  183. 92 eldorado E0085 dtc help pls
  184. Engine Rattle
  185. 4.1 chrome?!
  186. WHat Buttons Do I hit to CHeck the Error COdes On My 93 4.9?
  187. 4.9 off idle stumble
  188. HELP! Would a bad EGR valve cause my car to run rough on the highway?
  189. White Smoke
  190. Radiator Leak
  191. 4.5 Vs 4.9... Compairable?
  192. ROUGH idle , strange code .
  193. 85 Fleetwood FWD Engine Trouble
  194. WTB: ASAP 4.9L Front Exhaust Manifold
  195. 91 Deville 4.9 rough idle
  196. My 86 SedanDeville is running rough above 55mph
  197. Has anyone converted to the electrocruise?
  198. '86 DeVille HT4100 knock - please help :-(
  199. Engine noise while in park?
  200. 4.9 with poor gas mileage. just changed o2
  201. Low Oil Pressure
  202. Changing oil pan gasket
  203. Looking for a couple of VSS wires - '91 Deville
  204. the return of E48/E49
  205. 84' seville is a mess!
  206. EGR Vavle
  207. engine swap
  208. 92deville, idle(rough) Injector service??
  209. CAM sensor
  210. supercharging the 4.9
  211. Please help me with my 4.1..or give me a mechanic who can
  212. How to remove/replace rattling CAT
  213. pellets and 4.5 engine
  214. ohm reading for injectors on 4.5
  215. ? acceptable ohm resistance for injectors
  216. Intermittent Stalling
  217. 4.5 EGR vs. 4.9 EGR
  218. 4.5 engine
  219. Pushrod?
  220. Got new codes today.
  221. 90 Deville Dies while driving
  222. 84 4.1 Swap To 305/350 ?
  223. new to the forum, need a little help (90 4.5l pfi)
  224. Air Pump Seized (4.1 engine)
  225. OBD I codes for 4.x Engines
  226. junked 4.1 installed chevy 5.0 runs great
  227. I replaced my tps and isc but it stall every now an then
  228. Engine running rough
  229. 85 cadillac seville
  230. '93 4.9L Spark Plugs and Wires
  231. TCC location, please Help!!
  232. White smoke still coming from exhaust?
  233. Starter Disabled "Anti-Theft"
  234. need source for 99 cadillac service manuals
  235. HT4100 coolant issue.
  236. 92 (4.9L) stalling
  237. Cars starting to run a little better!
  238. Oil Overfill Cause Engine Damage?
  239. 4T60E Trans Sport Mode???
  240. can't advance computer beyond PCM?
  241. Turbocharge the 4.9L?
  242. Transmission Wont Shift
  243. discontinued?
  244. Replaced Injectors.. Still no action in Cyls 3 and 4?
  245. Edelbrock engine....
  246. Rough Idle
  247. A/c
  248. Speedometer problems......
  249. 1985 Seville HELP NEEDED
  250. Weird A/C air condition problem