: HT4100 4.1, 4.5, 4.9



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