: HT4100 4.1, 4.5, 4.9



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  1. 4.9 Info Needed
  2. Oh Sh*%! I lost my head.
  3. Remove oil pump on cadillac eldorado 1985 ?
  4. 1985 eldorado biarritz won't start
  5. 4.9 pulled head bolt threads
  6. Hesitation on an 83 cadillac fleetwood brougham with HT4100 motor
  7. 95 sedan shuts down while driving
  8. 93 SDV 4.9 spark plug replacement post mortem (can't edit other thread)
  9. Driving along and suddenly, DEAD!
  10. Starter Gear Clearance
  11. Replacing original plugs/wires 93 SDV........wish me luck!
  12. 4.9 - intake
  13. Idle Problems After Mechanic
  14. Lurching '91 Deville
  15. Can FWD HT 4100 eng and transmission be installed together?
  16. '82 Fleetwood D'elegance coupe problem :(
  17. replacing water pump on my old '84 DeVille 4.1 engine
  18. What are the symptoms of CVJ’s failing?
  19. distributor question
  20. Car not starting
  21. Problem with 1990 Seville 4.5
  22. change spark plugs, 1989 seville 4.5
  23. Oil Leaking from "Everywhere"
  24. 4.1 to 4.1 swap, how hard can it really be???
  25. School of hard knocks
  26. 90 deville 4.5 stalling problems
  27. 1983 Eldorado engine running problem!
  28. Carburetor on V8 4100 HT Eldorado 1985 ?
  29. need some help with my 1994 Deville 4.9L v8
  30. Did I miss anything?
  31. hard starting 1997 STS
  32. 1991 Cadillac Biarittz - Engine problem.
  33. First Caddy Questions
  34. The best engine to put in my Eldo Cadillac?
  35. Stumped!
  36. 1990 cadillac deville
  37. Please Help - error code 19 on 84 Deville ht4100
  38. Fuel Pump Relay - 84 Deville HT4100
  39. Where is the oil pressure switch located - 84 Deville HT4100
  40. Remanufactured 4.1 available
  41. 4.9 Belt Tensioner Question
  42. Rough Running 4.9 - Please Help !
  43. Removing the AIR pump, HT4100
  44. 4T60-E Transaxle, feels like park paw spring is worn out.
  45. Seville Swap: from 83 HT4100 to 81 368
  46. 86 seville 4.1 low engine power-issue
  47. leftover 4.x parts
  48. 4.5 RWD engines for sale?? would this work??
  49. '85 Seville HT 4100 MAP location & mystery connectors ?
  50. awesome 440T4->4T65E conversion
  51. Difficult to start engine in Eldorado 1983
  52. Rough Idle on low mileage 91 Eldorado
  53. "system problem"
  54. Purpose for detent switch and kickdown?
  55. Basics for operating ECM on 84 Deville HT4100??
  56. 4.5 Overheating. Need help
  57. PD08 and Spark Timing
  58. Where is the a/c low pressure valve on a 1990 Seville?
  59. 1985 DeVille Whats That, (Fuel System Canister Valve?)
  60. 4.5 will not go into timing mode, desperately seeking advice
  61. Torque Specs
  62. Looking to replace camshaft to fix lack of power & hesitation - ht4100
  63. HT 4100 engine problem
  64. 84 cadillac eldorado ht4100 rough idle at acceleration
  65. ISC Adjustment & the mysterious green connector
  66. Thinking of picking up an '83 Fleetwood HT4100
  67. Advice, please: 4.9 Cruise Control Cable Stuck
  68. 1995 Sedan Deville HEAD Gasket
  69. 88 seville instrument panel
  70. Need Help with timing/tune-up on 84 Cadillac Deville HT4100
  71. Bad Misfire on Low Mile 4.9 (1991 Eldorado)
  72. thinking about getting mods on 4.5
  73. Vapor Canister Filter
  74. Oil for 4100
  75. Code E49 Air Injection System Fault
  76. 4.5 distributor removal
  77. significant improvements in 94/95 4.9?
  78. Name the Emission Tube for 1990 4.5
  79. source for 4.x cylinder sleeves
  80. 4.9 throttle body interchange data
  81. Engine Swap Process
  82. 4.9 Individual Throttle Body project
  83. 91 Deville - skipping and no 1st or 4th gear-HELP
  84. 96 deville alternator
  85. Falling MPG - 1990 Deville/Fleetwood
  86. 4.5 carb and distributor conversion
  87. A/C Repair
  88. 4.9 running rough after spark plug change Help!
  89. New annoying message: "Change Oil Soon" (just changed it last month!)
  90. 4.9 Horrible Idle
  91. 1993 Distributor, and Minimum Air
  92. 4.1L Idle Speed Issues
  93. 4.9 blown head gasket
  94. codes i pulled from my cadi
  95. idle engine engine hot please help
  96. Oil in coolant, 4.5
  97. 1985 Cadillac El Dorado water pump!
  98. Bad A/C Delco Waterpump. 91 Eldo 4.9 Anything better than AC Delco Waterpumps?
  99. 90' 4.5L Deville Head Bolt Leaking
  100. 4.9 no crank
  101. car is dieing at idle. P048 current trouble code.
  102. 93 Seville 4.9L sporadic miss at idle. Spark Plugs?
  103. Intermittent throttle sticking
  104. Looking for HT4100 Cylinder head guide pin
  105. E 90 Code - VCC Brake Switch Signal Problem
  106. squeeling under the hood
  107. Broke hose
  108. A Time To Celebrate
  109. 7mpg average! Help if anyone can.
  110. Heater Core Replace BRRR COLD!
  111. WARNING! 4.9L Dayco Tensioner Pulley warning: DO NOT BUY #231081!!!
  112. Throttle Questions
  113. HT4100 (4.5 sleeves) Head Bolt Torque Sequence and Specifications?
  114. 1986 Seville HT4100-Overcooling issue
  115. Can't find the engine temperature switch.
  116. Need Help PLEASE HELP!!! Oil dipstick problem
  117. Cold Air Intake?
  118. Oil pan and pump
  119. Can bad ECM cause 85 fleetwood brougham ht4100 miss bad, backfire and barely run?
  120. New Car Got Questions????
  121. the notorious 4.1 thump
  122. Recently rebuilt 85 ht4100...was fine....all of a sudden struggling and backfiring
  123. 4100 Valve train not oiling
  124. E49 code and possible solutions.
  125. timing
  126. 1990 Seville-Message DTC R026 / RO33
  127. E47
  128. burning
  129. e23 and e27
  130. Idle speed control problem? 90 Deville 4.5
  131. E37 code manifold air temp. sensor
  132. 85 fleet ht4100 fwd
  133. Disributor slop question
  134. 1988 Cadillac DeVille 4.5L gas gauge issue
  135. Fuel Line
  136. 4.9 oil pump in 4.5
  137. Colder Spark Plugs
  138. Twinkling lights
  139. Stainless steel exhaust, 90 Deville
  140. 4.1 Intial Timing Question
  141. 92 Deville stalling and backfiring
  142. 4.1 TPS Question
  143. 4.5L Deville runnability issues/ emissions problems
  144. Can I supercharge my 2008 STS AWD?
  145. 85 eldo w/4100
  146. UGH watter pump gasket
  147. Do Not Overfill!
  148. Techheads, answer me this:
  149. allante 4.5! awesome
  150. Replacing head gasket on 1992 4.9
  151. Fuel Imbalance (Left and Right Bank)
  152. leaky rear main oil seal
  153. Persistant Leaking
  154. Coolant Header Tank
  155. Exhaust manifold gaskets
  156. How to adjust idle speed on '91 Eldorado 4,5l V8 ?
  157. Do I have a blown head? And should I replace my motor? 93 Sedan Deville 4.9L V8
  158. What engines are compatible with 93 Sedan Deville?
  159. 4100 to 307 swap (ITS ALIVE!)
  160. high idle after washing engine
  161. spark plugs
  162. 4.9 stumbling right off idle
  163. @50MPH & above; Doggy and slight vibration
  164. Trying to Identify this Hose
  165. 4.1 to a 4.5
  166. 4.x perf options
  167. 93 deville turn signal problems
  168. Oxygen Sensor Code 44
  169. 4.5 in an Isuzu Trooper
  170. 1990 Fleetwood fwd 4.5L Surges and looses power when warm
  171. 84 Eldorado torsion bar anchors
  172. power steering pump bracket
  173. cooling fans
  174. need to replace a couple fuel injectors, any advice before pulling the fuel rail, etc
  175. 84 eldo. antena
  176. replacing a 4.1
  177. Where do I connect Tach
  178. So how old is too old for injectors?
  179. 4.9L missing
  180. Ht4100 question
  181. HT4100 Exhaust Manifold Gaskets
  182. Transmission is shot
  183. 93 deville running great
  184. Fuel Pump runs, but car won't start!
  185. 4.5 distributer 180 out?
  186. 4.9 Distributor / Timing question
  187. Changing Final Drive ratio/ ECM tuning
  188. looking for a good 4100 mechanic
  189. '84 4.1 idles up and down when the A/C is on
  190. Transmission acting funny
  191. HT4100 upkeep and maintenence
  192. P.A.S.S. security system
  193. What is effected by an E0112?
  194. Clunkin Sound
  195. lost my top-end
  196. What is F15 code? ('90 DeVille 4.5)
  197. '84 Eldorado 4100 vacuum readings
  198. Interchangeability HT4100
  199. O2 sensors : 1 righ and 1 lean
  200. Just wanted to thank you guys
  201. '92 Fleetwood DeVille random stalling
  202. New Life in my 94 caddy
  203. Anyone done a 4100 head gasket replace?
  204. Low oil pressure - stop engine
  205. Fuel pump running, car not....
  206. 1996 deville with 200 deville engine swap.Possible??
  207. 92 Eldorado Valve Cover Gaskets
  208. HT4100 engine vacuum lines with pics
  209. 92 4.9L, not sure if radiator fans are coming on
  210. Shorted MAP Sensor Signal
  211. 85 HT4100 new remanufactured motor
  212. S10 Chevy p'up; swap in a 4.5 or 4.9?
  213. Replacing the starter on a 1987 Cadillac Eldorado with 4.1L V8
  214. 4T60-E + Ratchet Shifter
  215. 85 HT4100 smokes when shut off?
  216. Intake Gaskets
  217. Gaggle of codes, ugh!
  218. HT 4100 no oil pressure new rebuilt motor
  219. rebuilt HT 4100 no oil up top or oil pressure
  220. Opinions on my very special '93 FWD C-Body
  221. 4.1 oil leak
  222. 92 deville wont start
  223. Tunercats
  224. chugging and backfiring intermittently. No codes
  225. 1992 4.9 Coolant Mystery
  226. 90 4.5 exhaust manifold threads
  227. EGR interchange
  228. 4.9 fuel pump question
  229. The DIY Injector Test Bench
  230. Wont start please help
  231. Loss of electrical; intermittent problem
  232. Alternator
  233. Distributor Sound
  234. Tired of &^%$ injectors!
  235. egr problems?4.9
  236. Help with '91 ETC codes.
  237. ECM interchangeability and swap
  238. 1991 Deville Leaking Coolant near water pump
  239. ECM specs, where do I find them?
  240. Outside temp
  241. No oil up top, what am I missing?
  242. ECM injector driver damage?
  243. Thoughts on supercharging 4.9
  244. Anyone Need a 90 deville FSM
  245. broke down before belt came off pump and belt tensioner bracket cracked
  246. Steering
  247. getting wierd OBD I codes what is it bad computer?
  248. 4.9 ever used in a hearse?
  249. need help antifreeze leak 4.9 1993 deville
  250. ok just need some info