: HT4100 4.1, 4.5, 4.9



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  1. Performance?
  2. 93 Seville 4.9 4t60E
  3. Vacuum Line Routing Egr Solenoid & Regulator
  4. Bad CTS?? (coolant senor)
  5. Name this tube! 90 DeVille
  6. 4.5 Fuel Injector Issues
  7. HT4100:major oil leak
  8. What engine/trans appear in various Cadillacs?
  9. FWD Engine Removal
  10. Coolant Change Question
  11. Stripped4.9 headbolt
  12. Fooling the Inlet Air Temp (IAT) sensor?
  13. exhaust manifold installation question
  14. PCM FI Driver Damage ? (Re-visited)
  15. 4.9L Main Bearing Thump
  16. 1993 4.9 rough at low RPM
  17. ht4100 issues
  18. PCM FI Driver Damage ?
  19. DeVille 4.9 Throttle body spacer
  20. Throttle body spacer
  21. Hot exhaust
  22. E24?
  23. 4.9 Water Pump....OR ?
  24. Stalling and Surging--Need help
  25. Relocate the oil filter on your 4.9
  26. SSS light on?
  27. 1985 Eldorado Engine Stumble & Surge
  28. won't go in gear
  29. used oil cooler lines?
  30. Chirping engine at idle
  31. 1993 Deville 4.9 sumble at iddle.
  32. Coolant "tabs" -- yes or no
  33. '90 DeVille Fuel Sending Unit Problem??
  34. Where to install Prestone flush fitting?
  35. 95 Deville AC compressor noisy
  36. 368 to 4.1 swap 1980 Fleetwood Brougham
  37. Procedure for flushing the cooling system (1990 4.5)
  38. F40 & F49 ?'s
  39. ISC part#
  40. I got a GREAT deal, I think!
  41. I wanna drive my Cadi
  42. Coolant Fan Problems
  43. Fuel injector problem
  44. 95 4.9 deville no spark???
  45. Current drain
  46. radiator/cooling system suggestions
  47. Stump the experts!
  48. no spark
  49. Why Do Some 4.x Engines get 26+MPG, Others <18 MPG Highway
  50. 1991 Cadillac Deville Runs Rough Weak Spark HELP
  51. Thermostatic Air Cleaner (THERMAC) location?
  52. Set timing mode problem!!!!! Please help!
  53. possible to fix myself?
  54. Best strut/axle solution for a '90 DeVille?
  55. 4.1 engine knock
  56. 1995 Deville 4.9 lower cooling hose question
  57. HT4100 Noise Just Started Today
  58. 1989 Seville fan comes cycles on and off when ignition is off
  59. 2000 Seville misfire. new to cadillac
  60. 1995 4.9 Misfiring at WOT
  61. Thermac?
  62. How long will a 4.5 DeVille last?
  63. Intermittent starting.
  64. 92 Deville 4.9 governed?
  65. ISC trouble! Help!
  66. need some help with my new pita
  67. EGR problem or ????
  68. Where is the Cruise control's fuse
  69. 95 devile ignition coil install help!!!
  70. would this work as a replacement for the 4.9L transmission fluid cooler?
  71. 1990 fleetwood code troubles please help!!
  72. What's the difference between ignition modules?
  73. Very strange engine problem 4.9L =HELP=
  74. 92 Deville 4.9 miss at idle
  75. 92 Deville blown headgasket or intake manifold?
  76. 1995 devile "service engine soon" light comes out , need help
  77. 91 Sedan DeVille Stall
  78. 1985 DeVille allternator wire (brown)
  79. 88 DeVille ELC not functioning
  80. 1988 DeVille Motor Mount Help
  81. heater hoses, any tips how to get these out?
  82. strut/axle/transmisiion problem
  83. Power Steering Woes
  84. flushing radiator fluid
  85. Break Release?
  86. '83 Eldorado with HT4100 V8, Rebuild or Replace?
  87. 89 coup deville coolant leak
  88. removeing crankshaft pulley bolt
  89. Back to my coolant flow problems
  90. help needed "no charge" light 83 eldorado 4.1
  91. Quick, Simple Question.
  92. 84 coupeD 4.1
  93. Engine Compartment Diagram Needed
  94. Re-install distributor
  95. Where to get a water pump pulley
  96. Don't deal with Remanufactured.com
  97. 1982 Cadillac Fleetwood. Code 52 PCM Reset. Dead Alternator. And my friends screw up.
  98. Vacuum on 4.5 Seville
  99. Alternator Bracket for Eldorado '85
  100. Different 4.1s?
  101. 91 Sedan Deville 4.9L CAR WON'T START
  102. 1992 Cadillac DeVille FOR SALE!!!!
  103. Fuel Injector 4.5
  104. 91 seville suspension dryer
  105. Voltage discrepancies
  106. Best way to clean out dead gas residue in tank?
  107. 4.9 map sensor problem?
  108. '91 Fleetwood Coupe has demons under the hood
  109. Replaced Head Gasket
  110. Looking for online source for TVS Switch for 85 HT4100
  111. I plan to make more of an appearance here...
  112. 93 4.9 motor
  113. intake manifold insides
  114. ISC pricing?
  115. coolant leak (pics)
  116. 91 seville heater control valve?
  117. 4.1 swap
  118. replacement valve covers
  119. 1992 DeVille Tune Up
  120. surging, only when warm
  121. 91 seville 4.9l owners manual
  122. Won't start. E12 .
  123. 4.9 wont stay running/wont start
  124. Anybody have a 91 seville 4.9l
  125. 1990 deville won't stay running
  126. 4.9L Spark Knock
  127. seperating engine and transmission
  128. 4.1 to Olds 403 swap
  129. 1994 cadillac sedan deville 4.9l please help!!
  130. ISC plunger question
  131. weird noise then belt pops off
  132. 91 seville 4.9 wheels?
  133. Service soon - refer to owners manual
  134. 91 seville trunk pull-down motor
  135. My engine build up
  136. PO39 and IO39 codes
  137. Car will not start-Distributor
  138. wats the MAP sensor
  139. high side temperature sensor circuit
  140. wats history after a code mean and how do i refesh list
  141. 92 deville wont start
  142. unbolting torque converter from flexplate
  143. Cracked head or head gasket
  144. 1983 4.1 Vs. 1985 4.1
  145. Another Anti Freeze question
  146. New problem
  147. Mixed up spark plug wire chaos!!!!!
  148. 91 seville 4.9 fan problems
  149. 94 Deville 4.9L
  150. 94 Cadillac SLS Idle Probelms
  151. Where to purchase a new ISC motor?
  152. Relay
  153. Question
  154. Head Bolt Torque Specifications?
  155. gasket question
  156. How hard it is to remove intake manifold???
  157. Diagram
  158. Real problem
  159. Extra HP & Torque
  160. How to adjust ISC
  161. replaced waterpump
  162. "Sail on" after cleaning throttle body
  163. Exhaust Gas in Radiator
  164. 2003 dhs trouble code p0300
  165. Cadillac trouble
  166. Cadillac trouble
  167. 1994 Deville leaking coolant
  168. 83 4.1 misfiring bad when running cold at constant speed
  169. Engine (4.1) won't start, stumbling when starting
  170. Dipstick doesn't match crankcase oil level
  171. The end is near? The end is here?
  172. Changing the FDR: What do I need?
  173. loss of hp?
  174. 93 eldo 4.9 overheating
  175. 93 exhaust question
  176. Prolly a dumb question:
  177. New Distributor Help
  178. water drowning out 84 caddy
  179. is it my spark plugs?
  180. Finally....Start-Up
  181. New problem: racing after cold startups now
  182. Common 4.1L Problems
  183. 91 deville surging idle
  184. '85 Fleetwood FWD 140K+ Miles! Hose questions
  185. Still got a miss at times
  186. Distributor won't drop.....
  187. '94 Sedan Deville, Parting out...Complete car
  188. 4.5 mess
  189. 4.9 intake gaskets
  190. Vacuum tube replacement
  191. Changing belts on 84 deville
  192. Coolant leak from WP cover
  193. Distributor Compatiblity 4.9 into a 4.5?
  194. Heater Core Removal 83 Eldorado
  195. 91 deville needs head gasket
  196. Sluggish acceleration
  197. 93 Eldorado clunking under load
  198. 4.1 just cuts out then comes back
  199. Oil pan gasket: Is it worth it?
  200. 4x engine as boat power?
  201. Cat converter exhaust flange
  202. Cooling system sealant
  203. 1983 4.1, 6 mpg in town driving ????
  204. 4.9 Headgasket ?
  205. E13, e44
  206. Help w/ Temp Fan Light on '85 Deville
  207. 15w-40 too heavy for a 61k mile 4.5?
  208. Operating temp: Whats the norm?
  209. The Last Stretch:Tranny Mods.
  210. timing marks
  211. Distributor Wiring Harness Compatability?
  212. Going from conventional to Synthetic - Good or bad?
  213. E46 code
  214. E98?
  215. 4.9 Lifespan?
  216. Return Line Pressure?
  217. 92 seville 4.9L engine problem
  218. alternator question
  219. Odd "Cold" Idle
  220. Rotten 4.1 do they just normally overheat ???
  221. Starter Change
  222. 83 Eldorado No power to HVAC controls or Mileage calculator
  223. Cam position sensor replacement
  224. A.L.D.L connector, setting timing
  225. The 93 SDV is dead!
  226. 1989 Seville Transmission shifts - Vac Modulator?
  227. thinking about 1994 Sedan deville
  228. Will there be a mess
  229. 1990 Eldorado runs ruff
  230. The 6 flexplate to crankshaft bolts
  231. Coolant
  232. Well, found one of my oil leaks...
  233. 92 Deville Shuts of suddenly
  234. Exhaust manifold gasket set
  235. Fuel Pump Cheat?
  236. 1995 Devile 4.9 Oil Leak
  237. Found my oil-leak
  238. Check this guy out: 91 Seville with 'questionable' mods
  239. Hose substution
  240. Thermostat
  241. Which of these?
  242. New Performance 4.9 Injector Mod. and Adjustable Fuel Pressure Regulator
  243. 1994 Cadillac Deville High Idle
  244. 91 deville, dead miss
  245. heater controls 92 eldo.
  246. How many tablets or bars leak?
  247. Distributor Help
  248. Proper Spark Plug Gap for 4.5
  249. 1990 Deville 4.5 help
  250. Yes, I Did It