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View Full Version : HT4100 4.1, 4.5, 4.9

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  1. replacement power antenna
  2. Rough 4th gear
  3. How to replace motor and transmission mounts 1990 Deville 4.5L V8
  4. 1984 Coupe Engine Oil Cooler lines
  5. E48 Code- EGR FAULT
  6. Injector cleaner, will it work?
  7. 4.9 ping!!!
  8. 1990 Seville enginemiss
  9. 1990 4.5 intake gaskets
  10. Cadillac Deville 4.9l Engine Problem
  11. 4.1 L digital engine
  12. 4.1 Motor? Rattles/Engine Pinging?
  13. 4.9L head bolts 1993
  14. P048 EGR code on 4.9L
  15. What gives?
  16. The Best Kind of Motor Oil For 87 Deville HT4100
  17. i have code E52 - PCM Memory Reset how do i do this ?
  18. Gas mileage gone to hell
  19. idle faster after change timming
  20. 4.9 Power Steering Pulley Slipping
  21. 4.9 Upper a/c compressor bracket
  22. 4.9 knock
  23. high fuel consumption..?
  24. 4.9 issue...
  25. Drive belt routing for 4.9L ???
  26. 92 STS Electrical Short or Drain
  27. where to buy mounting bracket for PS pump?
  28. 1993 Sedan Deville Transmission Swap
  29. rpm question
  30. Code 26 & 41 '91 4.9
  31. Question re: engine swap for 85 FW coupe RWD
  32. 1993 Cadillac DeVille 4.9L Distributor Shot
  33. Fuel pump and FPR recommendations?
  34. Could bad motor mounts cause stumbling on light acceleration
  35. Judgement Call - No Heat 93 Deville
  36. Motor is very clean in my 4.9
  37. Cold Air Intake/Exhaust
  38. 84 eldo. antena
  39. Symptoms of faulty distributor pick up coil
  40. I finally switched from dexicool
  41. Misfire at idle and sumble under acceleration 93 4.9
  42. Refilling colant reservoir every 2 weeks, misfire at idle
  43. 4.9. Overheating (long post)
  44. 4.9 Pictures and sound clip!
  45. 84 deville 4.1 starting prob's help please
  46. 90 Seville Dies Suddenly....
  47. when should timing chain be replaced on 93 deville 4.9
  48. Motor Mount Replacement
  49. No heat at 90 degrees on climate control 93 caddy
  50. 4.1 V8 PUlleys!
  51. 93 deville sits very low in rear time for shocks and coil spring?
  52. Adding NITROUS to a 4.5
  53. Preventive maintenance ('90 with 28k miles)
  54. 4.1 Issues with 85 Eldorado -- Can you help?
  55. Best oil Mobil 1 High mileage for 93 deville 4.9 with 102,000 miles
  56. PLEASE HELP 93 DEVILLE 4.9 Stumble under light acceleration
  57. 4.9 What's the best antifreeze to use?
  58. 93 deville surging
  59. 88 ELDO new r134 Failed Twice??
  60. How reliable will my 4.9 be?
  61. Blower fan ideas wanted
  62. 90 deville front cover gasket failure
  63. New Owner with '86 Fleetwood Seventy Five Limo
  64. 4.9 Coolant overfill reservoir not draining into radiator when cold
  65. 1992 Seville 4.9 Liter Removal
  66. ht 4100 to sbc 350 motor mount pad location HELP!
  67. Brakes
  68. 93 deville oil lev
  69. Confused about seal tabs
  70. 84 eldo-4100HT
  71. HT4100 Care and Upkeep
  72. tranny sounds
  73. oil pump again
  74. Mufflers???
  75. 4.9 How long will it last?
  76. 4.5 Reliability
  77. Sawping Out a 4.9
  78. How do you convert 80's model to R134
  79. Have you used sea foam?
  80. distributor wrench
  81. 84 eldo-4100HT
  82. Coolant.
  83. 84 Eldorado Transmission Problems
  84. 1985 Eldorado 4100 engine swap
  85. Da Capts Back with his 4.9 Fiero lots of updates
  86. here we go again, A/C
  87. 84 eldo trouble
  88. help
  89. fuel meter cover gasket...
  90. Makes no sense...
  91. car stutters intermittently under med/heavy acceleration
  92. Missing Antifreeze
  93. Severe Coolant Leak 4.9
  94. peformance chips
  95. 4.9 Bosch GenIII Injector - ??Integrator, Block Learn, x-count, p.w. values??????
  96. won't idle
  97. New code?
  98. Caddy V-8 history
  99. voltage regulator...?
  100. 4.5 running rough at start -- tune up????
  101. e.g.r. valve
  102. 94 Deville Help!!
  103. map sensor
  104. 4.9 aeromotive afpr won't fit!! Help Mr. Illumna
  105. 4.9 throttle body description
  106. Emission test failed
  107. error code 20
  108. break line
  109. 1985 Eldo Gas Leaking out of the Charcoal Can
  110. Distributor Gear Sheared Again...Help!
  111. Climate control Problem???
  112. 1985 Deville Coolant Leak
  113. engine popping
  114. 91 Coupe replaced injectors now blowing smoke
  115. 1995 Deville Hi Performance Ideas anybody????
  116. 4100 vacuum diagram
  117. 4.1 belt tensioner
  118. HT 4.X base timing question
  119. 2005 4.1 PCV Valve
  120. 1985 DeVille Collant Temp Fan Light
  121. new to me 92 sdv,need some help
  122. just wondering
  123. 87 Eldo Cash for Clunker: Heresy?
  124. sudden engine probs
  125. brand new problem
  126. 94 4.9 Distributor question
  127. Plastic Radiator Side Tanks
  128. How to check cat. converter?
  129. 94 Deville 4.9 where is the governor
  130. 92 Eldo problem
  131. Cruise control gone 4.1 87'seville
  132. 94 Sedan Deville A/C Question
  133. fuel injectors interchange?
  134. ht4100 giving me problems
  135. 4.1L tune up and oil on manifold.
  136. Need help on a '90 Cadillac Fleetwood FWD
  137. 91 deville service engine soon
  138. DIN radio in '92 Eldorado
  139. Your best 4.X MPG?
  140. 1991 4.9
  141. 90 SDV Repeated E22 TPS Code
  142. silly question
  143. you helped me last time (weird fuel pump)
  144. 90 SDV Repeated E22 TPS Code
  145. 4100 engine change. Need input.
  146. egnine oil cooler hose assemblies
  147. 92 4.9 starter replacement
  148. How many miles?
  149. water pump wrestling
  150. Head gasket change
  151. Error code 34 on 83 deville
  152. Advanced Timing
  153. gearbox oil..?
  154. Is gas safe
  155. Using a laptop for real-time OBD
  156. '94 4.9 rough running
  157. 4.9 litre engine firing order
  158. 1986 Eldorado HT4100: No Start-No Codes
  159. 1986 Eldorado HT4100
  160. '91 Deville 4.9L surging
  161. 94 4.9L will not start. Need help
  162. Idling Down rough?
  163. 86 Eldorado Fuel Pump
  164. 91 fleewood won't start code31
  165. Did I blow head gasket on 93 deville?? Please Help!
  166. Vaccum Line Problem?
  167. Replacing a blower motor - what's the secret?
  168. oil pump driveshaft is loose???
  169. 1984 Cadillac Eldorado (my topless baby)
  170. Hard starts when hot?
  171. oil pressure gauge installation
  172. couple of questions regarding oil pump
  173. HT4100 Cooling water doesn't circulate (87' Seville)
  174. removing oil pan on RWD 4.1
  175. Turbo 4.1 Allante
  176. radiator caps with zinc anode
  177. What a mess!!!
  178. High Side AC Hose Information Needed
  179. Squeeling betty
  180. 92 deville no acceleration when hot
  181. Where is the PCV valve on the 4.9L?
  182. Performance?
  183. 93 Seville 4.9 4t60E
  184. Vacuum Line Routing Egr Solenoid & Regulator
  185. Bad CTS?? (coolant senor)
  186. Name this tube! 90 DeVille
  187. 4.5 Fuel Injector Issues
  188. HT4100:major oil leak
  189. What engine/trans appear in various Cadillacs?
  190. FWD Engine Removal
  191. Coolant Change Question
  192. Stripped4.9 headbolt
  193. Fooling the Inlet Air Temp (IAT) sensor?
  194. exhaust manifold installation question
  195. PCM FI Driver Damage ? (Re-visited)
  196. 4.9L Main Bearing Thump
  197. 1993 4.9 rough at low RPM
  198. ht4100 issues
  199. PCM FI Driver Damage ?
  200. DeVille 4.9 Throttle body spacer
  201. Throttle body spacer
  202. Hot exhaust
  203. E24?
  204. 4.9 Water Pump....OR ?
  205. Stalling and Surging--Need help
  206. Relocate the oil filter on your 4.9
  207. SSS light on?
  208. 1985 Eldorado Engine Stumble & Surge
  209. won't go in gear
  210. used oil cooler lines?
  211. Chirping engine at idle
  212. 1993 Deville 4.9 sumble at iddle.
  213. Coolant "tabs" -- yes or no
  214. '90 DeVille Fuel Sending Unit Problem??
  215. Where to install Prestone flush fitting?
  216. 95 Deville AC compressor noisy
  217. 368 to 4.1 swap 1980 Fleetwood Brougham
  218. Procedure for flushing the cooling system (1990 4.5)
  219. F40 & F49 ?'s
  220. ISC part#
  221. I got a GREAT deal, I think!
  222. I wanna drive my Cadi
  223. Coolant Fan Problems
  224. Fuel injector problem
  225. 95 4.9 deville no spark???
  226. Current drain
  227. radiator/cooling system suggestions
  228. Stump the experts!
  229. no spark
  230. Why Do Some 4.x Engines get 26+MPG, Others <18 MPG Highway
  231. 1991 Cadillac Deville Runs Rough Weak Spark HELP
  232. Thermostatic Air Cleaner (THERMAC) location?
  233. Set timing mode problem!!!!! Please help!
  234. possible to fix myself?
  235. Best strut/axle solution for a '90 DeVille?
  236. 4.1 engine knock
  237. 1995 Deville 4.9 lower cooling hose question
  238. HT4100 Noise Just Started Today
  239. 1989 Seville fan comes cycles on and off when ignition is off
  240. 2000 Seville misfire. new to cadillac
  241. 1995 4.9 Misfiring at WOT
  242. Thermac?
  243. How long will a 4.5 DeVille last?
  244. Intermittent starting.
  245. 92 Deville 4.9 governed?
  246. ISC trouble! Help!
  247. need some help with my new pita
  248. EGR problem or ????
  249. Where is the Cruise control's fuse
  250. 95 devile ignition coil install help!!!