: HT4100 4.1, 4.5, 4.9



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