: HT4100 4.1, 4.5, 4.9



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  1. 85 Eldorado- currently major tuneup. Issues shifting ,fuel, and electrical
  2. 4100 Runs either perfect or horrible...
  3. coolant temp to cold?
  4. Replacing Northstar 4.6 with a 4.9 engine
  5. engine runs very rough the first few seconds after i turn it on
  6. Changed Plugs/Wires - then I got three codes...
  7. Injectors solved the miss BUT fuel rail leaks bad
  8. My 1986 Coupe De Ville 4.1L startup
  9. Diesel Oil For 4.9?
  10. 4.9 mystery issue....
  11. Looking for a Great Mechanic in Los Angeles, CA.
  12. HT4100 4.1, need help finding this part!
  13. Need Help in OKLAHOMA CITY
  14. Engine coolant level sensor
  15. E91 Code
  16. Your experience with the HT 4100?
  17. Performance engine for Deville 1984
  18. Coupe DeVille 4.1 1984 Error codes 32,34,36,52
  19. 4.9 injector replacement questions
  20. Minimum Air Settings for 82 Cad 4.1 V8 HT4100
  21. Where can I get a reliable turnkey 4.5 liter cadillac motor?
  22. Surging Idle on 82 Cad Fleetwood
  23. 4.9 High NOx, Failed Smog, stumped and need help!
  24. 4.1 Loose disconnected wire 1982 Coupe DeVille
  25. 82 Coupe DeVille 4.1 Belt Replacement
  26. (HT4100 4.1) 82 Coupe DeVille loose wire coming from firewall....
  27. Cooling fan start 4.9
  28. 82 Deville Persistent Code E26 with Check engine Light on
  29. Torque, harmonic balancer 4,9
  30. 1993 4.9 O2 sensor locations ?
  31. 84 cadillac fleetwood brougham d elegance rough idle
  32. 1992 STS 4.9 poor throttle response?
  33. HT4100 SandRail Dune Buggy
  34. 4.1 power problem
  35. Dull clattering at idle
  36. HT4100 A/C bypass diagram
  37. 93 deville cooler lines
  38. 1984 eldorado cadillac, 4.1 .
  39. Oil Filter Adapter/ Distributor Removal
  40. 4100 distributor thrust washer
  41. 1986 Hearse 24 hours of LeMons Race car !
  42. ht 4100 questions
  43. 92 eldorado 4.9L
  44. Coolant supplement Tabs
  45. New ISC Motor Issue
  46. 93 Eldorado starter wiring
  47. 1992 4dr Deville
  48. mileage on your 4.9
  49. 11 !/2 miles per gallon ?
  50. 1985 Seville 4.1L Head Bolts
  51. Injectors
  52. 4.5 main bearings
  53. leaking/Cracked 88 4.5 Engine Block
  54. R4 compressor jump
  55. 1994 4.9L Eldorado - how many O2 sensors.
  56. A/c Cycles every 8-15 seconds-88 Eldorado
  57. ISC issue
  58. Mysterious missing issue
  59. tick tick ticking
  60. 4.1 Troubles on my 84 Deville
  61. Code E053 question
  62. oil leak in filter area - 85 eldo 4.1
  63. Fuel consumption and outside temp
  64. Changing lifters
  65. valve tap after changing oil - 85 eldo 4.1
  66. Head Bolts
  67. HT 4100 83' Deville Problems
  68. Looking to upgrade injectors ..91 4.9
  69. Instructions on changing the coolant in an HT-4100?
  70. Refresh HT4100 85 Seville
  71. Noise after changing Oil 4.1 CDV
  72. swapping 440-T4
  73. 4.1 Coupe Freshining Up with pics
  74. Coolant Pellets, Tabs.. are these them?
  75. 1985 Eldo transplant...
  76. School Me !
  77. 4.9 random stalls
  78. new here with some questions
  79. 4.9 cold start knock what is it??
  80. Motor mount change 1985 FWD Seville
  81. 1992 sts 4.9
  82. 92 Allante 4.5 returning E041 Cam sensor
  83. 1985 cadillac eldorado 4.1 engine
  84. Tranny shifting points
  85. 4.1 PCV breather hose
  86. ROTELLA T 15W-40 tell me i did the right thing
  87. fuel meter body gasket 85 eldo 4.11
  88. anyone in need of engine parts for 4.1/ 4.5/ 4.9 L engine ?? I have a lot
  89. Map Sensor
  90. Compatible oil pan for 92 Deville
  91. 440-T4 > 4T6X-E conversion
  92. question about diagnostics mode - 85 eldo
  93. timing gear. 85 eldo
  94. oil pump qustions - 85 ht4100 eldo
  95. full tune - up / now running a bit wierd 85 eldo
  96. accel supercoil on 85 4.1
  97. quick question 85 4.1
  98. EGR SOLENOID 85 Seville
  99. Please don't tell me my injectors are failing...
  100. EGR Valve. 'P' or 'N' type ?
  101. 85 eldo upcoming purchase questions
  102. 4.9 engine oil pump needed
  103. Timing advance car nut
  104. 1984 Seville 4.1 - need head bolt set
  105. 4.9 Hall effects switch change... turns into new distributor
  106. Can not get 1987 4.1 to run correct or is it even possible without the computer
  107. Mid 80's edorado... Do or dont???
  108. Timing marks for 4.1 1984 engine
  109. 4.1 Oscillating/Hunting idle , any suggestions besides...
  110. Ht4100 Supplement Pellets nowadays ?
  111. 85 Eldorado 4.1
  112. 1991 Seville 4.9 - Idles fine, dies immediately after giving it gas
  113. What year and model is this engine from?
  114. 1985 Eldorado Touring coupe, NO FUEL SITUATION
  115. 82 Seville not idiling or running correctly
  116. 1985 eldorado touring coupe distributor/top dead center help.
  117. 1995 Deville - FPR replacement tips ?
  118. HT4100 pre-purchase help......
  119. 1985 ELDORADO HT4100 ,ANY IDEA Where this connector goes?
  120. 1984 Cadillac fleetwood brougham.
  121. 1986 Eldorado 4.1 v8 (fwd) Water pump Removal
  122. HT4100 to 350 swap. Need sound advice. Please!!!!
  123. Vacuum hose sizes/locations for a '94 deville 4.9?
  124. pinging problems 1994 Deville 4.9
  125. Replace head gaskets or not? HT4100
  126. 1985 Eldorado running rough at sustained high speeds
  127. 1985 eldorado 4100 intake manifold gaskets install
  128. Need help! Having starting problems with my 84 Coupe DeVille
  129. Installing a Cadillac 4.9 in a 1985 Eldorado.
  130. 1985 4100 hard starting
  131. 92 deville alternator
  132. HT 4100 Camshaft break-in!
  133. 84 coupe deville 4.1 rwd
  134. 4.5 "main brg thump"
  135. HT 4100 Rocker arm support train
  136. Capped hose from vapor canister? 95 4.9 Deville
  137. swap 1987 4.1 to 4.5
  138. anyone need new pistons?
  139. Crap...sludge under oil filler cap...
  140. Timing Issue
  141. 1986 Cadillac Fleetwood 75 Ht4100 Running Very Rough
  142. First time Cadillac owner - bad 4.1 engine
  143. P048 code - detonation at load 95 deville 4.9
  144. Oil light coming on at idle...
  145. Idle Control
  146. Allante intake
  147. HT4100 82 Seville engine replacement options
  148. Need help trouble shooting my 92 deville. Alternator/MAP sensor/exhaust gas recirc.
  149. Service A/c Light 4.9 '93 Sedan...
  150. 84 Seville headgasket or?
  151. 4100 HT rocker arm bridge
  152. 88 4.5 has no power and wants to die.
  153. FPR and Injectors 4.9
  154. HT4100 Intake Gasket Question
  155. Coolant guage sensor location help
  156. gear selector fault
  157. At what temp should the radiator fan come on?
  158. 91' Deville, 78k miles, running/accelerating rough, Need some help! No codes
  159. Repairing a blower motor power module
  160. 1984 Eldorado code 15 won't start
  161. I have a code 27 on an 84 SDV
  162. No vacuum to EGR valve ... 4.9 engine
  163. EGR System photos 83 4.1
  164. Accessing Spark Plugs on HT4100 - 1984 Cadillac Coupe DeVille
  165. 1992 eldorado 4.9 no start.
  166. 4.1 liter HT-4100
  167. Headbolts
  168. compression test on 1990 4.5L ? constant misfire, idling, under load, coasting...
  169. Engine issues & out of ideas ! 1991 4.9
  170. 4.5L Burnt tire smell from engine
  171. Operarating temperatue 4.1 engine 1985 eldorado
  172. 4.5l Valve Cover Gasket Replacement
  173. Distributor gear problem
  174. time to upgrade the 4.1, seeking advise
  175. No heat!!!!!!
  176. Service Soon digital dash Out
  177. 4.9L Oil Consumption
  178. HT4100 Brake Loss
  179. Warming up a 4.9/ turn off in trafgic
  180. 1990 Eldorado running rough
  181. 91 Deville - 4.9 swaps
  182. Electronic Fan Module & Cooling Fan Fault 9
  183. '92 Coupe deVille (4.9) shudders, knocks and vibrates on acceleration.
  184. Dirt in coolant? w/pic 4.5L
  185. E046
  186. removing 4.9
  187. OBD confusion
  188. RPM vs. highway speed ?
  189. Seville 4.1L V8 Engine - to South Africa
  190. Extremely Erratic Idle Until Operating Temperature
  191. Identifying distributor
  192. Rough Idle w/ Brake Booster Loss
  193. strong gas smell after motor turned off and exiting the vehical...no codes...95 devil
  194. 95 deville shocks all four corner???
  195. Intermittent stalling
  196. 1990 eldorado over heating and coolant boiling
  197. Why and what is it making that noise? (Video included)
  198. HT 4100 turns but will not start unless i spray starting fluid in the Carborator.
  199. 1992 Cadillac Seville
  200. 1985 Eldorado Roadster (4100)
  201. 4.9 Cable Wrapping Questions
  202. Seville 1990 code ED32
  203. 4.9 flooding when shut off
  204. 1984 Fleetwood Broughm d'elegence engine bogs down when hot
  205. Newbie looking for ground(s)
  206. Digital Dash 86 deville
  207. 1990 DeVille, 4.5l engine issues
  208. radiator fun
  209. 1987 DeVille Conv. 4.1 ICM still sets idle to high
  210. tranny swap 1992 sedan deville
  211. Can I get a timing cover for a '93 4.9L?
  212. Waterpmp AGAIN!
  213. 1995 Deville - 4.9 head gasket
  214. 4,1 L Eldorado '83 v/s 4,1 L cope dVille '85
  215. Need cadillac mechanic
  216. Late '85 HT 4100 white smoke from exhaust. Are there specific gasket tests?
  217. Is it worth the $?
  218. 92 seville timing cover torque specs
  219. 88 fleetwood engine randomly dies
  220. Check Engine Light?
  221. 1983 Cadillac Seville HT-4100 Vacuum Leak?
  222. '91 4.9 installed in a '85 Seville-can it be done and any thoughts
  223. 95 cadillac deville 4.9,no heat problem(nothing comes out of the main vents)
  224. 1995 Deville 4.9 randomly dies...
  225. HT 4100 oil pan capacity question
  226. 82 4100 eldorado.shutting off..
  227. 1990 Deville 141k runs slightly rough, high idle, maintains speed on highway by itsel
  228. Random overheating
  229. 1982 eldorado with 4100.''oil pump question..''
  230. 1982 eldorado oil pressure sending unit wires
  231. Re-manufactured HT4100 engine, oil is leaking at exhaust manifold by cylinder 6.
  232. hello gentlemen
  233. hello all
  234. 82 Eldo Digital Dash likes to dance
  235. 88 deville bubbling
  236. 1984 eldorado biarritz
  237. 1989 4.5L overboring
  238. Super high idle - 1992 Fleetwood
  239. 82 Eldo Updating Sensors and Wiring
  240. 1990 Eldorado displays wrong diagnostic parameters in CCDIC
  241. Complete bog down on acceleration when warm, wants to die.
  242. 1989 Deville F32/Running issues..Please Help
  243. what other factor could cause soot?
  244. in over my head...
  245. 4100 soot
  246. 83 pulsing gas pedal and codes 27 52 71..
  247. 83 Seville HT 4100 throttle?
  248. Turbo or super for a 1989 fleetwood
  249. Valve Cover Powdercoating
  250. 93 DeVille 4.9 Questions