: HT4100 4.1, 4.5, 4.9



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