: HT4100 4.1, 4.5, 4.9



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