: HT4100 4.1, 4.5, 4.9



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  1. 91 Coupe replaced injectors now blowing smoke
  2. 1995 Deville Hi Performance Ideas anybody????
  3. 4100 vacuum diagram
  4. 4.1 belt tensioner
  5. HT 4.X base timing question
  6. 2005 4.1 PCV Valve
  7. 1985 DeVille Collant Temp Fan Light
  8. new to me 92 sdv,need some help
  9. just wondering
  10. 87 Eldo Cash for Clunker: Heresy?
  11. sudden engine probs
  12. brand new problem
  13. 94 4.9 Distributor question
  14. Plastic Radiator Side Tanks
  15. How to check cat. converter?
  16. 94 Deville 4.9 where is the governor
  17. 92 Eldo problem
  18. Cruise control gone 4.1 87'seville
  19. 94 Sedan Deville A/C Question
  20. fuel injectors interchange?
  21. ht4100 giving me problems
  22. 4.1L tune up and oil on manifold.
  23. Need help on a '90 Cadillac Fleetwood FWD
  24. 91 deville service engine soon
  25. DIN radio in '92 Eldorado
  26. Your best 4.X MPG?
  27. 1991 4.9
  28. 90 SDV Repeated E22 TPS Code
  29. silly question
  30. you helped me last time (weird fuel pump)
  31. 90 SDV Repeated E22 TPS Code
  32. 4100 engine change. Need input.
  33. egnine oil cooler hose assemblies
  34. 92 4.9 starter replacement
  35. How many miles?
  36. water pump wrestling
  37. Head gasket change
  38. Error code 34 on 83 deville
  39. Advanced Timing
  40. gearbox oil..?
  41. Is gas safe
  42. Using a laptop for real-time OBD
  43. '94 4.9 rough running
  44. 4.9 litre engine firing order
  45. 1986 Eldorado HT4100: No Start-No Codes
  46. 1986 Eldorado HT4100
  47. '91 Deville 4.9L surging
  48. 94 4.9L will not start. Need help
  49. Idling Down rough?
  50. 86 Eldorado Fuel Pump
  51. 91 fleewood won't start code31
  52. Did I blow head gasket on 93 deville?? Please Help!
  53. Vaccum Line Problem?
  54. Replacing a blower motor - what's the secret?
  55. oil pump driveshaft is loose???
  56. 1984 Cadillac Eldorado (my topless baby)
  57. Hard starts when hot?
  58. oil pressure gauge installation
  59. couple of questions regarding oil pump
  60. HT4100 Cooling water doesn't circulate (87' Seville)
  61. removing oil pan on RWD 4.1
  62. Turbo 4.1 Allante
  63. radiator caps with zinc anode
  64. What a mess!!!
  65. High Side AC Hose Information Needed
  66. Squeeling betty
  67. 92 deville no acceleration when hot
  68. Where is the PCV valve on the 4.9L?
  69. Performance?
  70. 93 Seville 4.9 4t60E
  71. Vacuum Line Routing Egr Solenoid & Regulator
  72. Bad CTS?? (coolant senor)
  73. Name this tube! 90 DeVille
  74. 4.5 Fuel Injector Issues
  75. HT4100:major oil leak
  76. What engine/trans appear in various Cadillacs?
  77. FWD Engine Removal
  78. Coolant Change Question
  79. Stripped4.9 headbolt
  80. Fooling the Inlet Air Temp (IAT) sensor?
  81. exhaust manifold installation question
  82. PCM FI Driver Damage ? (Re-visited)
  83. 4.9L Main Bearing Thump
  84. 1993 4.9 rough at low RPM
  85. ht4100 issues
  86. PCM FI Driver Damage ?
  87. DeVille 4.9 Throttle body spacer
  88. Throttle body spacer
  89. Hot exhaust
  90. E24?
  91. 4.9 Water Pump....OR ?
  92. Stalling and Surging--Need help
  93. Relocate the oil filter on your 4.9
  94. SSS light on?
  95. 1985 Eldorado Engine Stumble & Surge
  96. won't go in gear
  97. used oil cooler lines?
  98. Chirping engine at idle
  99. 1993 Deville 4.9 sumble at iddle.
  100. Coolant "tabs" -- yes or no
  101. '90 DeVille Fuel Sending Unit Problem??
  102. Where to install Prestone flush fitting?
  103. 95 Deville AC compressor noisy
  104. 368 to 4.1 swap 1980 Fleetwood Brougham
  105. Procedure for flushing the cooling system (1990 4.5)
  106. F40 & F49 ?'s
  107. ISC part#
  108. I got a GREAT deal, I think!
  109. I wanna drive my Cadi
  110. Coolant Fan Problems
  111. Fuel injector problem
  112. 95 4.9 deville no spark???
  113. Current drain
  114. radiator/cooling system suggestions
  115. Stump the experts!
  116. no spark
  117. Why Do Some 4.x Engines get 26+MPG, Others <18 MPG Highway
  118. 1991 Cadillac Deville Runs Rough Weak Spark HELP
  119. Thermostatic Air Cleaner (THERMAC) location?
  120. Set timing mode problem!!!!! Please help!
  121. possible to fix myself?
  122. Best strut/axle solution for a '90 DeVille?
  123. 4.1 engine knock
  124. 1995 Deville 4.9 lower cooling hose question
  125. HT4100 Noise Just Started Today
  126. 1989 Seville fan comes cycles on and off when ignition is off
  127. 2000 Seville misfire. new to cadillac
  128. 1995 4.9 Misfiring at WOT
  129. Thermac?
  130. How long will a 4.5 DeVille last?
  131. Intermittent starting.
  132. 92 Deville 4.9 governed?
  133. ISC trouble! Help!
  134. need some help with my new pita
  135. EGR problem or ????
  136. Where is the Cruise control's fuse
  137. 95 devile ignition coil install help!!!
  138. would this work as a replacement for the 4.9L transmission fluid cooler?
  139. 1990 fleetwood code troubles please help!!
  140. What's the difference between ignition modules?
  141. Very strange engine problem 4.9L =HELP=
  142. 92 Deville 4.9 miss at idle
  143. 92 Deville blown headgasket or intake manifold?
  144. 1995 devile "service engine soon" light comes out , need help
  145. 91 Sedan DeVille Stall
  146. 1985 DeVille allternator wire (brown)
  147. 88 DeVille ELC not functioning
  148. 1988 DeVille Motor Mount Help
  149. heater hoses, any tips how to get these out?
  150. strut/axle/transmisiion problem
  151. Power Steering Woes
  152. flushing radiator fluid
  153. Break Release?
  154. '83 Eldorado with HT4100 V8, Rebuild or Replace?
  155. 89 coup deville coolant leak
  156. removeing crankshaft pulley bolt
  157. Back to my coolant flow problems
  158. help needed "no charge" light 83 eldorado 4.1
  159. Quick, Simple Question.
  160. 84 coupeD 4.1
  161. Engine Compartment Diagram Needed
  162. Re-install distributor
  163. Where to get a water pump pulley
  164. Don't deal with Remanufactured.com
  165. 1982 Cadillac Fleetwood. Code 52 PCM Reset. Dead Alternator. And my friends screw up.
  166. Vacuum on 4.5 Seville
  167. Alternator Bracket for Eldorado '85
  168. Different 4.1s?
  169. 91 Sedan Deville 4.9L CAR WON'T START
  170. 1992 Cadillac DeVille FOR SALE!!!!
  171. Fuel Injector 4.5
  172. 91 seville suspension dryer
  173. Voltage discrepancies
  174. Best way to clean out dead gas residue in tank?
  175. 4.9 map sensor problem?
  176. '91 Fleetwood Coupe has demons under the hood
  177. Replaced Head Gasket
  178. Looking for online source for TVS Switch for 85 HT4100
  179. I plan to make more of an appearance here...
  180. 93 4.9 motor
  181. intake manifold insides
  182. ISC pricing?
  183. coolant leak (pics)
  184. 91 seville heater control valve?
  185. 4.1 swap
  186. replacement valve covers
  187. 1992 DeVille Tune Up
  188. surging, only when warm
  189. 91 seville 4.9l owners manual
  190. Won't start. E12 .
  191. 4.9 wont stay running/wont start
  192. Anybody have a 91 seville 4.9l
  193. 1990 deville won't stay running
  194. 4.9L Spark Knock
  195. seperating engine and transmission
  196. 4.1 to Olds 403 swap
  197. 1994 cadillac sedan deville 4.9l please help!!
  198. ISC plunger question
  199. weird noise then belt pops off
  200. 91 seville 4.9 wheels?
  201. Service soon - refer to owners manual
  202. 91 seville trunk pull-down motor
  203. My engine build up
  204. PO39 and IO39 codes
  205. Car will not start-Distributor
  206. wats the MAP sensor
  207. high side temperature sensor circuit
  208. wats history after a code mean and how do i refesh list
  209. 92 deville wont start
  210. unbolting torque converter from flexplate
  211. Cracked head or head gasket
  212. 1983 4.1 Vs. 1985 4.1
  213. Another Anti Freeze question
  214. New problem
  215. Mixed up spark plug wire chaos!!!!!
  216. 91 seville 4.9 fan problems
  217. 94 Deville 4.9L
  218. 94 Cadillac SLS Idle Probelms
  219. Where to purchase a new ISC motor?
  220. Relay
  221. Question
  222. Head Bolt Torque Specifications?
  223. gasket question
  224. How hard it is to remove intake manifold???
  225. Diagram
  226. Real problem
  227. Extra HP & Torque
  228. How to adjust ISC
  229. replaced waterpump
  230. "Sail on" after cleaning throttle body
  231. Exhaust Gas in Radiator
  232. 2003 dhs trouble code p0300
  233. Cadillac trouble
  234. Cadillac trouble
  235. 1994 Deville leaking coolant
  236. 83 4.1 misfiring bad when running cold at constant speed
  237. Engine (4.1) won't start, stumbling when starting
  238. Dipstick doesn't match crankcase oil level
  239. The end is near? The end is here?
  240. Changing the FDR: What do I need?
  241. loss of hp?
  242. 93 eldo 4.9 overheating
  243. 93 exhaust question
  244. Prolly a dumb question:
  245. New Distributor Help
  246. water drowning out 84 caddy
  247. is it my spark plugs?
  248. Finally....Start-Up
  249. New problem: racing after cold startups now
  250. Common 4.1L Problems