: HT4100 4.1, 4.5, 4.9



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  1. Pump thump
  2. Replaced intake gasket and messed something up!
  3. When I First Start The Engine...
  4. Failed emissions
  5. 89 Eldorado engine misfire
  6. Ht-4100 rwd info
  7. 4.5 V8 Underpowered? & 92-93 Deville?
  8. HT-4100 oil pan
  9. 89 deville 4.5 antifreeze leak?
  10. The screws with no size...
  11. Does a 4.5 and 4.9 share the same transmission?
  12. 93 deville passed emissions and state inspection but still getting 10MPG
  13. 1993 Cadillac Deville 4.9L computer problem (ISC problem continued)
  14. 95 Deville base 4.9 fuel pressure issues, FPR or fuel pump?
  15. Hopefull found out my problem with my 93 deville 4.9
  16. 4.5L Fuel Injectors (Aftermarket)
  17. Thinking about buying a 1997 cadillac eldorado
  18. HT4100 with serpentine belt
  19. new Tranny
  20. Serpenting belt - when to change?
  21. 1993 DeVille ISC Problem
  22. Thanks All
  23. 95 4.9l deville idle problem
  24. Throttle to the moon....
  25. 1990 Deville-- Code E41
  26. still has problems
  27. Help Diagnosing Noise
  28. Bad tps 93 deville
  29. Catalytic
  30. something loose on intake manifold?
  31. What would cause an O2 sensor to turn red?
  32. Putting Restore in my 93 Deville
  33. 93 deville problems
  34. Merry christmas!
  35. The 325-4l dipstick I broke inside fill-tube...
  36. repair shops in oakland, ca.
  37. Valves...4100
  38. Rocker Arm Guide...what?
  39. Fuel Pressure
  40. 93 Deville main bearing thump
  41. Finding Used 4.9l engine assembly's
  42. EGR Tubes clogging up
  43. Power steering pulley
  44. Distributor removal and install on 85 rwd ht4100
  45. Timing Mark bouncing around
  46. Oil Filter Analysis
  47. 91 devillle heater issue
  48. Engine knock - 4.9L w/ 90k
  49. 94 4.9 Weird Rattle Question...
  50. 88 Eldorado, Code B127, E040, No Gears
  51. Strange problem Seville 90
  52. engine shake - 91 el dorado 4.9
  53. 86 deville intake
  54. no start probs
  55. 1995 4.9 cam sync check engine??
  56. 92 Eldo 4.9 43k
  57. 90 SDV won't run, timing chain?
  58. 1991 DeVille 4.9L water pump
  59. 4.1,4.5,4.9..Which You Prefer?
  60. Cadillac mechanic
  61. did they get better?
  62. replacement power antenna
  63. Rough 4th gear
  64. How to replace motor and transmission mounts 1990 Deville 4.5L V8
  65. 1984 Coupe Engine Oil Cooler lines
  66. E48 Code- EGR FAULT
  67. Injector cleaner, will it work?
  68. 4.9 ping!!!
  69. 1990 Seville enginemiss
  70. 1990 4.5 intake gaskets
  71. Cadillac Deville 4.9l Engine Problem
  72. 4.1 L digital engine
  73. 4.1 Motor? Rattles/Engine Pinging?
  74. 4.9L head bolts 1993
  75. P048 EGR code on 4.9L
  76. What gives?
  77. The Best Kind of Motor Oil For 87 Deville HT4100
  78. i have code E52 - PCM Memory Reset how do i do this ?
  79. Gas mileage gone to hell
  80. idle faster after change timming
  81. 4.9 Power Steering Pulley Slipping
  82. 4.9 Upper a/c compressor bracket
  83. 4.9 knock
  84. high fuel consumption..?
  85. 4.9 issue...
  86. Drive belt routing for 4.9L ???
  87. 92 STS Electrical Short or Drain
  88. where to buy mounting bracket for PS pump?
  89. 1993 Sedan Deville Transmission Swap
  90. rpm question
  91. Code 26 & 41 '91 4.9
  92. Question re: engine swap for 85 FW coupe RWD
  93. 1993 Cadillac DeVille 4.9L Distributor Shot
  94. Fuel pump and FPR recommendations?
  95. Could bad motor mounts cause stumbling on light acceleration
  96. Judgement Call - No Heat 93 Deville
  97. Motor is very clean in my 4.9
  98. Cold Air Intake/Exhaust
  99. 84 eldo. antena
  100. Symptoms of faulty distributor pick up coil
  101. I finally switched from dexicool
  102. Misfire at idle and sumble under acceleration 93 4.9
  103. Refilling colant reservoir every 2 weeks, misfire at idle
  104. 4.9. Overheating (long post)
  105. 4.9 Pictures and sound clip!
  106. 84 deville 4.1 starting prob's help please
  107. 90 Seville Dies Suddenly....
  108. when should timing chain be replaced on 93 deville 4.9
  109. Motor Mount Replacement
  110. No heat at 90 degrees on climate control 93 caddy
  111. 4.1 V8 PUlleys!
  112. 93 deville sits very low in rear time for shocks and coil spring?
  113. Adding NITROUS to a 4.5
  114. Preventive maintenance ('90 with 28k miles)
  115. 4.1 Issues with 85 Eldorado -- Can you help?
  116. Best oil Mobil 1 High mileage for 93 deville 4.9 with 102,000 miles
  117. PLEASE HELP 93 DEVILLE 4.9 Stumble under light acceleration
  118. 4.9 What's the best antifreeze to use?
  119. 93 deville surging
  120. 88 ELDO new r134 Failed Twice??
  121. How reliable will my 4.9 be?
  122. Blower fan ideas wanted
  123. 90 deville front cover gasket failure
  124. New Owner with '86 Fleetwood Seventy Five Limo
  125. 4.9 Coolant overfill reservoir not draining into radiator when cold
  126. 1992 Seville 4.9 Liter Removal
  127. ht 4100 to sbc 350 motor mount pad location HELP!
  128. Brakes
  129. 93 deville oil lev
  130. Confused about seal tabs
  131. 84 eldo-4100HT
  132. HT4100 Care and Upkeep
  133. tranny sounds
  134. oil pump again
  135. Mufflers???
  136. 4.9 How long will it last?
  137. 4.5 Reliability
  138. Sawping Out a 4.9
  139. How do you convert 80's model to R134
  140. Have you used sea foam?
  141. distributor wrench
  142. 84 eldo-4100HT
  143. Coolant.
  144. 84 Eldorado Transmission Problems
  145. 1985 Eldorado 4100 engine swap
  146. Da Capts Back with his 4.9 Fiero lots of updates
  147. here we go again, A/C
  148. 84 eldo trouble
  149. help
  150. fuel meter cover gasket...
  151. Makes no sense...
  152. car stutters intermittently under med/heavy acceleration
  153. Missing Antifreeze
  154. Severe Coolant Leak 4.9
  155. peformance chips
  156. 4.9 Bosch GenIII Injector - ??Integrator, Block Learn, x-count, p.w. values??????
  157. won't idle
  158. New code?
  159. Caddy V-8 history
  160. voltage regulator...?
  161. 4.5 running rough at start -- tune up????
  162. e.g.r. valve
  163. 94 Deville Help!!
  164. map sensor
  165. 4.9 aeromotive afpr won't fit!! Help Mr. Illumna
  166. 4.9 throttle body description
  167. Emission test failed
  168. error code 20
  169. break line
  170. 1985 Eldo Gas Leaking out of the Charcoal Can
  171. Distributor Gear Sheared Again...Help!
  172. Climate control Problem???
  173. 1985 Deville Coolant Leak
  174. engine popping
  175. 91 Coupe replaced injectors now blowing smoke
  176. 1995 Deville Hi Performance Ideas anybody????
  177. 4100 vacuum diagram
  178. 4.1 belt tensioner
  179. HT 4.X base timing question
  180. 2005 4.1 PCV Valve
  181. 1985 DeVille Collant Temp Fan Light
  182. new to me 92 sdv,need some help
  183. just wondering
  184. 87 Eldo Cash for Clunker: Heresy?
  185. sudden engine probs
  186. brand new problem
  187. 94 4.9 Distributor question
  188. Plastic Radiator Side Tanks
  189. How to check cat. converter?
  190. 94 Deville 4.9 where is the governor
  191. 92 Eldo problem
  192. Cruise control gone 4.1 87'seville
  193. 94 Sedan Deville A/C Question
  194. fuel injectors interchange?
  195. ht4100 giving me problems
  196. 4.1L tune up and oil on manifold.
  197. Need help on a '90 Cadillac Fleetwood FWD
  198. 91 deville service engine soon
  199. DIN radio in '92 Eldorado
  200. Your best 4.X MPG?
  201. 1991 4.9
  202. 90 SDV Repeated E22 TPS Code
  203. silly question
  204. you helped me last time (weird fuel pump)
  205. 90 SDV Repeated E22 TPS Code
  206. 4100 engine change. Need input.
  207. egnine oil cooler hose assemblies
  208. 92 4.9 starter replacement
  209. How many miles?
  210. water pump wrestling
  211. Head gasket change
  212. Error code 34 on 83 deville
  213. Advanced Timing
  214. gearbox oil..?
  215. Is gas safe
  216. Using a laptop for real-time OBD
  217. '94 4.9 rough running
  218. 4.9 litre engine firing order
  219. 1986 Eldorado HT4100: No Start-No Codes
  220. 1986 Eldorado HT4100
  221. '91 Deville 4.9L surging
  222. 94 4.9L will not start. Need help
  223. Idling Down rough?
  224. 86 Eldorado Fuel Pump
  225. 91 fleewood won't start code31
  226. Did I blow head gasket on 93 deville?? Please Help!
  227. Vaccum Line Problem?
  228. Replacing a blower motor - what's the secret?
  229. oil pump driveshaft is loose???
  230. 1984 Cadillac Eldorado (my topless baby)
  231. Hard starts when hot?
  232. oil pressure gauge installation
  233. couple of questions regarding oil pump
  234. HT4100 Cooling water doesn't circulate (87' Seville)
  235. removing oil pan on RWD 4.1
  236. Turbo 4.1 Allante
  237. radiator caps with zinc anode
  238. What a mess!!!
  239. High Side AC Hose Information Needed
  240. Squeeling betty
  241. 92 deville no acceleration when hot
  242. Where is the PCV valve on the 4.9L?
  243. Performance?
  244. 93 Seville 4.9 4t60E
  245. Vacuum Line Routing Egr Solenoid & Regulator
  246. Bad CTS?? (coolant senor)
  247. Name this tube! 90 DeVille
  248. 4.5 Fuel Injector Issues
  249. HT4100:major oil leak
  250. What engine/trans appear in various Cadillacs?