: HT4100 4.1, 4.5, 4.9



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  1. significant improvements in 94/95 4.9?
  2. Name the Emission Tube for 1990 4.5
  3. source for 4.x cylinder sleeves
  4. 4.9 throttle body interchange data
  5. Engine Swap Process
  6. 4.9 Individual Throttle Body project
  7. 91 Deville - skipping and no 1st or 4th gear-HELP
  8. 96 deville alternator
  9. Falling MPG - 1990 Deville/Fleetwood
  10. 4.5 carb and distributor conversion
  11. A/C Repair
  12. 4.9 running rough after spark plug change Help!
  13. New annoying message: "Change Oil Soon" (just changed it last month!)
  14. 4.9 Horrible Idle
  15. 1993 Distributor, and Minimum Air
  16. 4.1L Idle Speed Issues
  17. 4.9 blown head gasket
  18. codes i pulled from my cadi
  19. idle engine engine hot please help
  20. Oil in coolant, 4.5
  21. 1985 Cadillac El Dorado water pump!
  22. Bad A/C Delco Waterpump. 91 Eldo 4.9 Anything better than AC Delco Waterpumps?
  23. 90' 4.5L Deville Head Bolt Leaking
  24. 4.9 no crank
  25. car is dieing at idle. P048 current trouble code.
  26. 93 Seville 4.9L sporadic miss at idle. Spark Plugs?
  27. Intermittent throttle sticking
  28. Looking for HT4100 Cylinder head guide pin
  29. E 90 Code - VCC Brake Switch Signal Problem
  30. squeeling under the hood
  31. Broke hose
  32. A Time To Celebrate
  33. 7mpg average! Help if anyone can.
  34. Heater Core Replace BRRR COLD!
  35. WARNING! 4.9L Dayco Tensioner Pulley warning: DO NOT BUY #231081!!!
  36. Throttle Questions
  37. HT4100 (4.5 sleeves) Head Bolt Torque Sequence and Specifications?
  38. 1986 Seville HT4100-Overcooling issue
  39. Can't find the engine temperature switch.
  40. Need Help PLEASE HELP!!! Oil dipstick problem
  41. Cold Air Intake?
  42. Oil pan and pump
  43. Can bad ECM cause 85 fleetwood brougham ht4100 miss bad, backfire and barely run?
  44. New Car Got Questions????
  45. the notorious 4.1 thump
  46. Recently rebuilt 85 ht4100...was fine....all of a sudden struggling and backfiring
  47. 4100 Valve train not oiling
  48. E49 code and possible solutions.
  49. timing
  50. 1990 Seville-Message DTC R026 / RO33
  51. E47
  52. burning
  53. e23 and e27
  54. Idle speed control problem? 90 Deville 4.5
  55. E37 code manifold air temp. sensor
  56. 85 fleet ht4100 fwd
  57. Disributor slop question
  58. 1988 Cadillac DeVille 4.5L gas gauge issue
  59. Fuel Line
  60. 4.9 oil pump in 4.5
  61. Colder Spark Plugs
  62. Twinkling lights
  63. Stainless steel exhaust, 90 Deville
  64. 4.1 Intial Timing Question
  65. 92 Deville stalling and backfiring
  66. 4.1 TPS Question
  67. 4.5L Deville runnability issues/ emissions problems
  68. Can I supercharge my 2008 STS AWD?
  69. 85 eldo w/4100
  70. UGH watter pump gasket
  71. Do Not Overfill!
  72. Techheads, answer me this:
  73. allante 4.5! awesome
  74. Replacing head gasket on 1992 4.9
  75. Fuel Imbalance (Left and Right Bank)
  76. leaky rear main oil seal
  77. Persistant Leaking
  78. Coolant Header Tank
  79. Exhaust manifold gaskets
  80. How to adjust idle speed on '91 Eldorado 4,5l V8 ?
  81. Do I have a blown head? And should I replace my motor? 93 Sedan Deville 4.9L V8
  82. What engines are compatible with 93 Sedan Deville?
  83. 4100 to 307 swap (ITS ALIVE!)
  84. high idle after washing engine
  85. spark plugs
  86. 4.9 stumbling right off idle
  87. @50MPH & above; Doggy and slight vibration
  88. Trying to Identify this Hose
  89. 4.1 to a 4.5
  90. 4.x perf options
  91. 93 deville turn signal problems
  92. Oxygen Sensor Code 44
  93. 4.5 in an Isuzu Trooper
  94. 1990 Fleetwood fwd 4.5L Surges and looses power when warm
  95. 84 Eldorado torsion bar anchors
  96. power steering pump bracket
  97. cooling fans
  98. need to replace a couple fuel injectors, any advice before pulling the fuel rail, etc
  99. 84 eldo. antena
  100. replacing a 4.1
  101. Where do I connect Tach
  102. So how old is too old for injectors?
  103. 4.9L missing
  104. Ht4100 question
  105. HT4100 Exhaust Manifold Gaskets
  106. Transmission is shot
  107. 93 deville running great
  108. Fuel Pump runs, but car won't start!
  109. 4.5 distributer 180 out?
  110. 4.9 Distributor / Timing question
  111. Changing Final Drive ratio/ ECM tuning
  112. looking for a good 4100 mechanic
  113. '84 4.1 idles up and down when the A/C is on
  114. Transmission acting funny
  115. HT4100 upkeep and maintenence
  116. P.A.S.S. security system
  117. What is effected by an E0112?
  118. Clunkin Sound
  119. lost my top-end
  120. What is F15 code? ('90 DeVille 4.5)
  121. '84 Eldorado 4100 vacuum readings
  122. Interchangeability HT4100
  123. O2 sensors : 1 righ and 1 lean
  124. Just wanted to thank you guys
  125. '92 Fleetwood DeVille random stalling
  126. New Life in my 94 caddy
  127. Anyone done a 4100 head gasket replace?
  128. Low oil pressure - stop engine
  129. Fuel pump running, car not....
  130. 1996 deville with 200 deville engine swap.Possible??
  131. 92 Eldorado Valve Cover Gaskets
  132. HT4100 engine vacuum lines with pics
  133. 92 4.9L, not sure if radiator fans are coming on
  134. Shorted MAP Sensor Signal
  135. 85 HT4100 new remanufactured motor
  136. S10 Chevy p'up; swap in a 4.5 or 4.9?
  137. Replacing the starter on a 1987 Cadillac Eldorado with 4.1L V8
  138. 4T60-E + Ratchet Shifter
  139. 85 HT4100 smokes when shut off?
  140. Intake Gaskets
  141. Gaggle of codes, ugh!
  142. HT 4100 no oil pressure new rebuilt motor
  143. rebuilt HT 4100 no oil up top or oil pressure
  144. Opinions on my very special '93 FWD C-Body
  145. 4.1 oil leak
  146. 92 deville wont start
  147. Tunercats
  148. chugging and backfiring intermittently. No codes
  149. 1992 4.9 Coolant Mystery
  150. 90 4.5 exhaust manifold threads
  151. EGR interchange
  152. 4.9 fuel pump question
  153. The DIY Injector Test Bench
  154. Wont start please help
  155. Loss of electrical; intermittent problem
  156. Alternator
  157. Distributor Sound
  158. Tired of &^%$ injectors!
  159. egr problems?4.9
  160. Help with '91 ETC codes.
  161. ECM interchangeability and swap
  162. 1991 Deville Leaking Coolant near water pump
  163. ECM specs, where do I find them?
  164. Outside temp
  165. No oil up top, what am I missing?
  166. ECM injector driver damage?
  167. Thoughts on supercharging 4.9
  168. Anyone Need a 90 deville FSM
  169. broke down before belt came off pump and belt tensioner bracket cracked
  170. Steering
  171. getting wierd OBD I codes what is it bad computer?
  172. 4.9 ever used in a hearse?
  173. need help antifreeze leak 4.9 1993 deville
  174. ok just need some info
  175. 4.5 head gaskets
  176. Code 52.
  177. 84 Seville 4.1L with "Random Toyota Acceleration" issue
  178. cooling fan module
  179. 4.5 intake manifold gasket progress
  180. 4.9 main mearing thump getting worse?
  181. lost of power
  182. 4.9 a little jittery at idle
  183. Power brake booster vacuum hose? All Cylinders?
  184. Egr
  185. Goodwrench NEW 4.1 sticker
  186. EGR tubes and TPS question.
  187. Antifreeze on the PCV Valve
  188. Ground Locations?
  189. 4.9 Reluctant to Start, Sometimes Dies at Idle
  190. I think its the alternator
  191. how long to change all motor mounts on 93 deville
  192. Vacuum leak somewhere inside the dash
  193. What problems in removing 4.9?
  194. Spark Plugs: What do YOU run?
  195. 4.9l engine ticking noise: lifter?
  196. 4.5 or 4.9
  197. 4.5 or 4.9 Engine
  198. Pump thump
  199. Replaced intake gasket and messed something up!
  200. When I First Start The Engine...
  201. Failed emissions
  202. 89 Eldorado engine misfire
  203. Ht-4100 rwd info
  204. 4.5 V8 Underpowered? & 92-93 Deville?
  205. HT-4100 oil pan
  206. 89 deville 4.5 antifreeze leak?
  207. The screws with no size...
  208. Does a 4.5 and 4.9 share the same transmission?
  209. 93 deville passed emissions and state inspection but still getting 10MPG
  210. 1993 Cadillac Deville 4.9L computer problem (ISC problem continued)
  211. 95 Deville base 4.9 fuel pressure issues, FPR or fuel pump?
  212. Hopefull found out my problem with my 93 deville 4.9
  213. 4.5L Fuel Injectors (Aftermarket)
  214. Thinking about buying a 1997 cadillac eldorado
  215. HT4100 with serpentine belt
  216. new Tranny
  217. Serpenting belt - when to change?
  218. 1993 DeVille ISC Problem
  219. Thanks All
  220. 95 4.9l deville idle problem
  221. Throttle to the moon....
  222. 1990 Deville-- Code E41
  223. still has problems
  224. Help Diagnosing Noise
  225. Bad tps 93 deville
  226. Catalytic
  227. something loose on intake manifold?
  228. What would cause an O2 sensor to turn red?
  229. Putting Restore in my 93 Deville
  230. 93 deville problems
  231. Merry christmas!
  232. The 325-4l dipstick I broke inside fill-tube...
  233. repair shops in oakland, ca.
  234. Valves...4100
  235. Rocker Arm Guide...what?
  236. Fuel Pressure
  237. 93 Deville main bearing thump
  238. Finding Used 4.9l engine assembly's
  239. EGR Tubes clogging up
  240. Power steering pulley
  241. Distributor removal and install on 85 rwd ht4100
  242. Timing Mark bouncing around
  243. Oil Filter Analysis
  244. 91 devillle heater issue
  245. Engine knock - 4.9L w/ 90k
  246. 94 4.9 Weird Rattle Question...
  247. 88 Eldorado, Code B127, E040, No Gears
  248. Strange problem Seville 90
  249. engine shake - 91 el dorado 4.9
  250. 86 deville intake