: HT4100 4.1, 4.5, 4.9



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  1. two questions pedal and ...
  2. valve spring rates
  3. I wanna know as many 0-60 times as possible!!
  4. Performance Parts for 4.9
  5. 92 Sedan Deville
  6. Car runs hot during long trips
  7. Radiator woes...
  8. How Many of You With Dead Injectors??
  9. 4.9 /Northstar
  10. Coolant shelf life?? No good after 2 years?
  11. compatibility???
  12. Exhaust Options? (photos)
  13. engine oil supplement ?
  14. 4.5 Engine: one dead others dying
  15. air intake mod?
  16. 4100 dual exhaust anyone????
  17. 93 deville heating problem
  18. E98 Isc?
  19. well
  20. High Mileage 4.9L Problems (desperate help needed)
  21. Missing Oil Pump O-ring On Ht4100
  22. 4.9l Deville e41 troubleshooting
  23. ISC RPM out of Range (P030)
  24. Clicking sound from valve covers?
  25. Oh no! trannys slipping
  26. 4.9L Drain Plug Leaking after Coolant Flush -- Help!
  27. 4.9 in rwd configuration?
  28. Fuel Pressure Regulator location?
  29. 4.9L engine low power
  30. here is a good one
  31. rocker arm pivot support
  32. new engine
  33. valve lifter?
  34. please dont be head gasket!!
  35. Starter Removal
  36. module needs ground?
  37. 4.1 vs 4.9
  38. well damn
  39. 4.9 Misfire
  40. P012 bad hall sensor or pick up coil?
  41. Rebuilt Ht4100 With Less Power
  42. Coolant drain locations for a 4.9 (93 SDV)
  43. Metal hose running into side of cat, what is it?
  44. Pulled plugs and compression test *pics*
  45. rip of cat conv and egr??
  46. 4100 coolant capacity
  47. 4.5L A.I.R. Error Code
  48. Increasing Horsepower in 1992 Deville
  49. 4100 Help!!!
  50. Just craps out when I give it gas
  51. He said my cams were out of time....
  52. 4.9 bearing thump
  53. Final Choice: Dynomax SuperTurbos VS. Summit Turbos
  54. Knocking when I give gas to the engine Any one know?!!!
  55. 1991 Cadillac Deville Misfiring
  56. 4.1 engine weight and application ?
  57. Timing advance and still run on MidGrade??
  58. 1990 Eldorado water pump removal help
  59. junkyard ht4100
  60. 1989 4.5L no start when cold. At witts end
  61. Engine runs poorly
  62. 4.5 Engine Woes
  63. Do it right once ....Never see it again
  64. 84Eldo 4.1 won't start
  65. 4.9 Died Again
  66. 4.9L Volcano!!!!
  67. Now I'm getting code 38! What gives?
  68. '84 4.1 running VERY rich, PLEASE HELP!!!!
  69. E30 on Fleetwood 1990
  70. Need Some Help
  71. What's this coming or going out of my cat. converter?
  72. Draining ALL the coolant!!
  73. What's the name of the device (?pump?) under on my 86 deville
  74. car running rich messing up oxygen sensor!
  75. no oil pressure
  76. 90 4.5 Runs Great till it warms up then brakes up.
  77. 4100 tuneing
  78. Engine has a hard time running
  79. i had it out with the cooling system today
  80. temperature erratic
  81. 95 4.9L #7 Cylinder dead, Injector?
  82. 4.9 Cylinder head removal questions
  83. Coolant change.Time or mileage dependant?
  84. Anti-Freeze Coming out of Heater?(fogging up windows)
  85. i changed everything almost ugghh
  86. 4.9L build-up
  87. stuck valve?
  88. I Need a bolt can you help me?
  89. update on my '82
  90. E39 Vcc
  91. WTF is going on!!!(engine runnin crazy!)
  92. 4.1 Low compression
  93. OBD code
  94. popping from carb..
  95. 1984 Having Coooold Start Problems.
  96. won't start when hot
  97. 4100 Heads For Sale
  98. [B][U]4.9 L Performance, 10" Round Air Cleaner[/B][/U]
  99. Head Gaskets or Complete Valve Job
  100. 4100 head bolts
  101. Now this is really weird to me!
  102. 84' seville timing
  103. 4.9 no longer starts
  104. ht4100 loosing power and e codes
  105. 4.1 running rich
  106. Car surges when accelerating
  107. 4.9 HEI ignition
  108. 93 eldorado vs. 92 coupe deville
  109. 4.5 Pinging
  110. Air Mix Door problem code F40
  111. Caddi still not starting
  112. 95 Deville 4.9, Low oil pressure warning
  113. im so cold
  114. Fuel lines
  115. '93 DeVille Gas Mileage Questions
  116. Question for Kcnewell
  117. my '85 FWB died on the interstate...fuel pump?
  118. throttle body cleaning????
  119. another sickening creation of mine!
  120. Coolant supplement
  121. backfiring in park
  122. 4.5 oil pan-bolts gone pan stays on
  123. Crazy overheating problem
  124. Weird Problem
  125. Need to find honest and expert mechanic in Saint Louis Help
  126. 84 Eldorado engine overheating problem
  127. Resurection of a '94 4.9--Advice please!
  128. Jr Shift kit 1-2 rpm shift? but my rebuilt transmission seems great :)
  129. 4.9 low oil pressure warning after head gaskets
  130. Backfiring from the start
  131. I really need help on this.... engine overall performs better, gas millage bad...
  132. 4.9l Engine Knocks when Started
  133. MYSTERY 94'deville water pump
  134. Rattling Rattling Rattling !!
  135. 89 Fleetwood no problems with overheating then 3 days ago leaking antifreeze......
  136. 90-92 350 TBI into 80's Fleetwood Brougham ?
  137. Possible northstar upgrade?
  138. Ignition module failing?
  139. plug wire confusion
  140. please help 4100 problem
  141. advice
  142. 4.5 no heat
  143. 4.1 Runnin a Little Hot at Idle
  144. I hope it's not too late!
  145. 4.1 Cad. Fleetwood Brougham [Tranny Question]
  146. Just installed new M.A.P. sensor now car doesn't even start!
  147. Help With 4100
  148. Help Please Va (engine Problem)
  149. ATF Generic or Name brand???
  150. 1985 deville, coolant in my oil, help
  151. help me bbobynski 4.5 lack of power
  152. '92 4.9 torque converter problem
  153. Car Stall when u hit brake at the stop light sometime
  154. Oil Leaking
  155. smog problems with 84 el dorado timing marks
  156. Help
  157. Quick question: Cradle to cradle / Rear engine/trans mount bolts
  158. Rare Cadillac Options? NM8
  159. 4.5 Fuel Filter replacement
  160. Swap 4.1 out 368 in. Can it be done?
  161. fuel filter location
  162. 93 deville water pump
  163. main bearing seel
  164. 4.9 off idle knocking?
  165. How many mile u got out of your 4.1 engine
  166. hard time starting car
  167. Needed help on 4.1 engine system
  168. 4.9 Idle Learn - Is this honestly it?
  169. 4.5 bad gas mileage and lack of power
  170. Flush at 20k ?Break in proceedure?
  171. 4.9 rpm bounce & bad mpg
  172. 91 4.9 hesitation EGR?
  173. power to fuel injector
  174. HT4100, no power uphill
  175. fuel regulator
  176. Inner wheel tire is spliting
  177. HT4100 Damper Bolt
  178. My car runs the same with or without the egr hooked up
  179. Superchip VS Timing advance
  180. mph limiter
  181. Highway millage.... bad....
  182. 88 Eldorado - rough idle, intermittent miss
  183. 4.1vs4.9
  184. Tranny Blew out
  185. Transmission wiring diag.
  186. Car not starting, please help
  187. So what do you like about your 4.9?
  188. 4.9 EGR system....
  189. Th 350
  190. problems removing oil pan - Please Help!
  191. 4.1 to 307 swap question
  192. Exhaust question once again
  193. BBob and anyone else, whats the say on synthetic?
  194. HEI In-cap Coil - What our the differences?
  195. tranny warmup?
  196. These 4.9s have some power!
  197. water pump, water pump, water pump,
  198. 1990 DeVille has" the shakes" and revs on its own
  199. 4.9 pinging not under a load
  200. Barometric Pressure Sensor location
  201. Exhaust leak in engine compartment?
  202. 5W-30 Vs 10W30 for the cold winter?
  203. trans delays shift
  204. Rebuilt motor for an 85
  205. 87 Eldo w 35,000 mi, Change tran fluid?
  206. Fuel Injector Impedance - High/Low
  207. How to make a wooden Engine Support Fixture J-28467
  208. 4.1 Coolant Leak from block-PLEASE HELP!
  209. 84 coupe deville fan shroud
  210. Mileage and Power loss, again.
  211. 4.9 valve cover gasket
  212. C-v joint
  213. 82' couple 4100 - accelerating by itslef - HELP
  214. Do I have to change coolant?
  215. 1990 4.5L Eldroado Engine running rough
  216. 4.9 speed limiter...
  217. Is this the right stuff, going to attempt this weekend
  218. TPS setting
  219. Tune up on a 89 Deville w/ 4.5
  220. Quick Question
  221. 92 eldorado E0085 dtc help pls
  222. Engine Rattle
  223. 4.1 chrome?!
  224. WHat Buttons Do I hit to CHeck the Error COdes On My 93 4.9?
  225. 4.9 off idle stumble
  226. HELP! Would a bad EGR valve cause my car to run rough on the highway?
  227. White Smoke
  228. Radiator Leak
  229. 4.5 Vs 4.9... Compairable?
  230. ROUGH idle , strange code .
  231. 85 Fleetwood FWD Engine Trouble
  232. WTB: ASAP 4.9L Front Exhaust Manifold
  233. 91 Deville 4.9 rough idle
  234. My 86 SedanDeville is running rough above 55mph
  235. Has anyone converted to the electrocruise?
  236. '86 DeVille HT4100 knock - please help :-(
  237. Engine noise while in park?
  238. 4.9 with poor gas mileage. just changed o2
  239. Low Oil Pressure
  240. Changing oil pan gasket
  241. Looking for a couple of VSS wires - '91 Deville
  242. the return of E48/E49
  243. 84' seville is a mess!
  244. EGR Vavle
  245. engine swap
  246. 92deville, idle(rough) Injector service??
  247. CAM sensor
  248. supercharging the 4.9
  249. Please help me with my 4.1..or give me a mechanic who can
  250. How to remove/replace rattling CAT