: HT4100 4.1, 4.5, 4.9



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  1. Replace head gaskets or not? HT4100
  2. 1985 Eldorado running rough at sustained high speeds
  3. 1985 eldorado 4100 intake manifold gaskets install
  4. Need help! Having starting problems with my 84 Coupe DeVille
  5. Installing a Cadillac 4.9 in a 1985 Eldorado.
  6. 1985 4100 hard starting
  7. 92 deville alternator
  8. HT 4100 Camshaft break-in!
  9. 84 coupe deville 4.1 rwd
  10. 4.5 "main brg thump"
  11. HT 4100 Rocker arm support train
  12. Capped hose from vapor canister? 95 4.9 Deville
  13. swap 1987 4.1 to 4.5
  14. anyone need new pistons?
  15. Crap...sludge under oil filler cap...
  16. Timing Issue
  17. 1986 Cadillac Fleetwood 75 Ht4100 Running Very Rough
  18. First time Cadillac owner - bad 4.1 engine
  19. P048 code - detonation at load 95 deville 4.9
  20. Oil light coming on at idle...
  21. Idle Control
  22. Allante intake
  23. HT4100 82 Seville engine replacement options
  24. Need help trouble shooting my 92 deville. Alternator/MAP sensor/exhaust gas recirc.
  25. Service A/c Light 4.9 '93 Sedan...
  26. 84 Seville headgasket or?
  27. 4100 HT rocker arm bridge
  28. 88 4.5 has no power and wants to die.
  29. FPR and Injectors 4.9
  30. HT4100 Intake Gasket Question
  31. Coolant guage sensor location help
  32. gear selector fault
  33. At what temp should the radiator fan come on?
  34. 91' Deville, 78k miles, running/accelerating rough, Need some help! No codes
  35. Repairing a blower motor power module
  36. 1984 Eldorado code 15 won't start
  37. I have a code 27 on an 84 SDV
  38. No vacuum to EGR valve ... 4.9 engine
  39. EGR System photos 83 4.1
  40. Accessing Spark Plugs on HT4100 - 1984 Cadillac Coupe DeVille
  41. 1992 eldorado 4.9 no start.
  42. 4.1 liter HT-4100
  43. Headbolts
  44. compression test on 1990 4.5L ? constant misfire, idling, under load, coasting...
  45. Engine issues & out of ideas ! 1991 4.9
  46. 4.5L Burnt tire smell from engine
  47. Operarating temperatue 4.1 engine 1985 eldorado
  48. 4.5l Valve Cover Gasket Replacement
  49. Distributor gear problem
  50. time to upgrade the 4.1, seeking advise
  51. No heat!!!!!!
  52. Service Soon digital dash Out
  53. 4.9L Oil Consumption
  54. HT4100 Brake Loss
  55. Warming up a 4.9/ turn off in trafgic
  56. 1990 Eldorado running rough
  57. 91 Deville - 4.9 swaps
  58. Electronic Fan Module & Cooling Fan Fault 9
  59. '92 Coupe deVille (4.9) shudders, knocks and vibrates on acceleration.
  60. Dirt in coolant? w/pic 4.5L
  61. E046
  62. removing 4.9
  63. OBD confusion
  64. RPM vs. highway speed ?
  65. Seville 4.1L V8 Engine - to South Africa
  66. Extremely Erratic Idle Until Operating Temperature
  67. Identifying distributor
  68. Rough Idle w/ Brake Booster Loss
  69. strong gas smell after motor turned off and exiting the vehical...no codes...95 devil
  70. 95 deville shocks all four corner???
  71. Intermittent stalling
  72. 1990 eldorado over heating and coolant boiling
  73. Why and what is it making that noise? (Video included)
  74. HT 4100 turns but will not start unless i spray starting fluid in the Carborator.
  75. 1992 Cadillac Seville
  76. 1985 Eldorado Roadster (4100)
  77. 4.9 Cable Wrapping Questions
  78. Seville 1990 code ED32
  79. 4.9 flooding when shut off
  80. 1984 Fleetwood Broughm d'elegence engine bogs down when hot
  81. Newbie looking for ground(s)
  82. Digital Dash 86 deville
  83. 1990 DeVille, 4.5l engine issues
  84. radiator fun
  85. 1987 DeVille Conv. 4.1 ICM still sets idle to high
  86. tranny swap 1992 sedan deville
  87. Can I get a timing cover for a '93 4.9L?
  88. Waterpmp AGAIN!
  89. 1995 Deville - 4.9 head gasket
  90. 4,1 L Eldorado '83 v/s 4,1 L cope dVille '85
  91. Need cadillac mechanic
  92. Late '85 HT 4100 white smoke from exhaust. Are there specific gasket tests?
  93. Is it worth the $?
  94. 92 seville timing cover torque specs
  95. 88 fleetwood engine randomly dies
  96. Check Engine Light?
  97. 1983 Cadillac Seville HT-4100 Vacuum Leak?
  98. '91 4.9 installed in a '85 Seville-can it be done and any thoughts
  99. 95 cadillac deville 4.9,no heat problem(nothing comes out of the main vents)
  100. 1995 Deville 4.9 randomly dies...
  101. HT 4100 oil pan capacity question
  102. 82 4100 eldorado.shutting off..
  103. 1990 Deville 141k runs slightly rough, high idle, maintains speed on highway by itsel
  104. Random overheating
  105. 1982 eldorado with 4100.''oil pump question..''
  106. 1982 eldorado oil pressure sending unit wires
  107. Re-manufactured HT4100 engine, oil is leaking at exhaust manifold by cylinder 6.
  108. hello gentlemen
  109. hello all
  110. 82 Eldo Digital Dash likes to dance
  111. 88 deville bubbling
  112. 1984 eldorado biarritz
  113. 1989 4.5L overboring
  114. Super high idle - 1992 Fleetwood
  115. 82 Eldo Updating Sensors and Wiring
  116. 1990 Eldorado displays wrong diagnostic parameters in CCDIC
  117. Complete bog down on acceleration when warm, wants to die.
  118. 1989 Deville F32/Running issues..Please Help
  119. what other factor could cause soot?
  120. in over my head...
  121. 4100 soot
  122. 83 pulsing gas pedal and codes 27 52 71..
  123. 83 Seville HT 4100 throttle?
  124. Turbo or super for a 1989 fleetwood
  125. Valve Cover Powdercoating
  126. 93 DeVille 4.9 Questions
  127. 1988 Deville 4.5L oil problems in Russia
  128. 95 deville 4.9 cooling fan & ac fan dont work
  129. 4100 HT Idle speed setting
  130. An update on my custom intake setup...
  131. 4100 Service Now / Codes
  132. Valve cover color
  133. 4.9 Idle Adjustment on '93 DeVille ?
  134. Poor mpg
  135. help with 85 eldorado alternator wiring
  136. 4.9L Intake manifold gasket install. Any tips?
  137. Check engine help!?!?
  138. Timing and error code 26
  139. 4100 still running better to rebuild or replace
  140. 4t60e stock converter stall speed
  141. Is my head gasket blown 94 cadillac sedan deville????
  142. Is my head gasket blown 94 cadillac sedan deville????
  143. cables
  144. Codes 4.9
  145. 4.5L ACDelco Spark Plug Question
  146. 4.9 low rpm/light throttle stumbling/bucking
  147. 4.9L 91 Seville power loss... at a loss..
  148. 1987 Deville 4.1 to 4.9 Conversion
  149. 97 Seville cooling
  150. Vacuum connection for heating?
  151. 1994 Deville 4.9 Engine Stalling
  152. Oil pressure specs for 4.1 at idle
  153. Oil pressure specs
  154. 91 Deville engine skip
  155. 4t60e chain and sprocket question
  156. 1st and 2nd design oil pressure switch?
  157. 1983 sed Deville 4100 0ut 1999-2002 Chevy 5.3 in
  158. 4100HT shuts down in sharp left corners
  159. What are my engine replacement options - Current engine is a transverse HT4100
  160. Vid: Cadillacs 1982 HT4100, the Development and Manufacturing
  161. JUST BOUGHT 1995 DEVILLE. Stalling and MAP Code issue?? and Possible related problem
  162. 4.9L coolant issues
  163. Upgrading and restoring a 4.9
  164. Brown sludge?
  165. oil pressure light 4.9 liter
  166. pvc valve housing possible vacuum leak?
  167. ACDELCO best water pump?
  168. 84 CDV Code 37 and Code 53 (need help)
  169. water pump tool?
  170. 4.5 hesitation, stumble, poor mpg; smog pump bypassed
  171. Replacing Air pump fan belt Problems
  172. I need a pic if anybody's got one
  173. 84 CDV need help on firing order and distributor wiring
  174. 4100 stalling after intake gasket repair
  175. 4.9 Injectors
  176. 1983 ht4100 enginge lower end knocking
  177. Ht4100 :(
  178. Can soneone give me a part number?
  179. 4.5 belt tensioner; is bearing replaceable?
  180. 4.9 litre tune up 94 deville
  181. Starting issue -- 91 Eldorado
  182. 4.9 Info Needed
  183. Oh Sh*%! I lost my head.
  184. Remove oil pump on cadillac eldorado 1985 ?
  185. 1985 eldorado biarritz won't start
  186. 4.9 pulled head bolt threads
  187. Hesitation on an 83 cadillac fleetwood brougham with HT4100 motor
  188. 95 sedan shuts down while driving
  189. 93 SDV 4.9 spark plug replacement post mortem (can't edit other thread)
  190. Driving along and suddenly, DEAD!
  191. Starter Gear Clearance
  192. Replacing original plugs/wires 93 SDV........wish me luck!
  193. 4.9 - intake
  194. Idle Problems After Mechanic
  195. Lurching '91 Deville
  196. Can FWD HT 4100 eng and transmission be installed together?
  197. '82 Fleetwood D'elegance coupe problem :(
  198. replacing water pump on my old '84 DeVille 4.1 engine
  199. What are the symptoms of CVJ’s failing?
  200. distributor question
  201. Car not starting
  202. Problem with 1990 Seville 4.5
  203. change spark plugs, 1989 seville 4.5
  204. Oil Leaking from "Everywhere"
  205. 4.1 to 4.1 swap, how hard can it really be???
  206. School of hard knocks
  207. 90 deville 4.5 stalling problems
  208. 1983 Eldorado engine running problem!
  209. Carburetor on V8 4100 HT Eldorado 1985 ?
  210. need some help with my 1994 Deville 4.9L v8
  211. Did I miss anything?
  212. hard starting 1997 STS
  213. 1991 Cadillac Biarittz - Engine problem.
  214. First Caddy Questions
  215. The best engine to put in my Eldo Cadillac?
  216. Stumped!
  217. 1990 cadillac deville
  218. Please Help - error code 19 on 84 Deville ht4100
  219. Fuel Pump Relay - 84 Deville HT4100
  220. Where is the oil pressure switch located - 84 Deville HT4100
  221. Remanufactured 4.1 available
  222. 4.9 Belt Tensioner Question
  223. Rough Running 4.9 - Please Help !
  224. Removing the AIR pump, HT4100
  225. 4T60-E Transaxle, feels like park paw spring is worn out.
  226. Seville Swap: from 83 HT4100 to 81 368
  227. 86 seville 4.1 low engine power-issue
  228. leftover 4.x parts
  229. 4.5 RWD engines for sale?? would this work??
  230. '85 Seville HT 4100 MAP location & mystery connectors ?
  231. awesome 440T4->4T65E conversion
  232. Difficult to start engine in Eldorado 1983
  233. Rough Idle on low mileage 91 Eldorado
  234. "system problem"
  235. Purpose for detent switch and kickdown?
  236. Basics for operating ECM on 84 Deville HT4100??
  237. 4.5 Overheating. Need help
  238. PD08 and Spark Timing
  239. Where is the a/c low pressure valve on a 1990 Seville?
  240. 1985 DeVille Whats That, (Fuel System Canister Valve?)
  241. 4.5 will not go into timing mode, desperately seeking advice
  242. Torque Specs
  243. Looking to replace camshaft to fix lack of power & hesitation - ht4100
  244. HT 4100 engine problem
  245. 84 cadillac eldorado ht4100 rough idle at acceleration
  246. ISC Adjustment & the mysterious green connector
  247. Thinking of picking up an '83 Fleetwood HT4100
  248. Advice, please: 4.9 Cruise Control Cable Stuck
  249. 1995 Sedan Deville HEAD Gasket
  250. 88 seville instrument panel