: HT4100 4.1, 4.5, 4.9



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  1. Codes 4.9
  2. 4.5L ACDelco Spark Plug Question
  3. 4.9 low rpm/light throttle stumbling/bucking
  4. 4.9L 91 Seville power loss... at a loss..
  5. 1987 Deville 4.1 to 4.9 Conversion
  6. 97 Seville cooling
  7. Vacuum connection for heating?
  8. 1994 Deville 4.9 Engine Stalling
  9. Oil pressure specs for 4.1 at idle
  10. Oil pressure specs
  11. 91 Deville engine skip
  12. 4t60e chain and sprocket question
  13. 1st and 2nd design oil pressure switch?
  14. 1983 sed Deville 4100 0ut 1999-2002 Chevy 5.3 in
  15. 4100HT shuts down in sharp left corners
  16. What are my engine replacement options - Current engine is a transverse HT4100
  17. Vid: Cadillacs 1982 HT4100, the Development and Manufacturing
  18. JUST BOUGHT 1995 DEVILLE. Stalling and MAP Code issue?? and Possible related problem
  19. 4.9L coolant issues
  20. Upgrading and restoring a 4.9
  21. Brown sludge?
  22. oil pressure light 4.9 liter
  23. pvc valve housing possible vacuum leak?
  24. ACDELCO best water pump?
  25. 84 CDV Code 37 and Code 53 (need help)
  26. water pump tool?
  27. 4.5 hesitation, stumble, poor mpg; smog pump bypassed
  28. Replacing Air pump fan belt Problems
  29. I need a pic if anybody's got one
  30. 84 CDV need help on firing order and distributor wiring
  31. 4100 stalling after intake gasket repair
  32. 4.9 Injectors
  33. 1983 ht4100 enginge lower end knocking
  34. Ht4100 :(
  35. Can soneone give me a part number?
  36. 4.5 belt tensioner; is bearing replaceable?
  37. 4.9 litre tune up 94 deville
  38. Starting issue -- 91 Eldorado
  39. 4.9 Info Needed
  40. Oh Sh*%! I lost my head.
  41. Remove oil pump on cadillac eldorado 1985 ?
  42. 1985 eldorado biarritz won't start
  43. 4.9 pulled head bolt threads
  44. Hesitation on an 83 cadillac fleetwood brougham with HT4100 motor
  45. 95 sedan shuts down while driving
  46. 93 SDV 4.9 spark plug replacement post mortem (can't edit other thread)
  47. Driving along and suddenly, DEAD!
  48. Starter Gear Clearance
  49. Replacing original plugs/wires 93 SDV........wish me luck!
  50. 4.9 - intake
  51. Idle Problems After Mechanic
  52. Lurching '91 Deville
  53. Can FWD HT 4100 eng and transmission be installed together?
  54. '82 Fleetwood D'elegance coupe problem :(
  55. replacing water pump on my old '84 DeVille 4.1 engine
  56. What are the symptoms of CVJ’s failing?
  57. distributor question
  58. Car not starting
  59. Problem with 1990 Seville 4.5
  60. change spark plugs, 1989 seville 4.5
  61. Oil Leaking from "Everywhere"
  62. 4.1 to 4.1 swap, how hard can it really be???
  63. School of hard knocks
  64. 90 deville 4.5 stalling problems
  65. 1983 Eldorado engine running problem!
  66. Carburetor on V8 4100 HT Eldorado 1985 ?
  67. need some help with my 1994 Deville 4.9L v8
  68. Did I miss anything?
  69. hard starting 1997 STS
  70. 1991 Cadillac Biarittz - Engine problem.
  71. First Caddy Questions
  72. The best engine to put in my Eldo Cadillac?
  73. Stumped!
  74. 1990 cadillac deville
  75. Please Help - error code 19 on 84 Deville ht4100
  76. Fuel Pump Relay - 84 Deville HT4100
  77. Where is the oil pressure switch located - 84 Deville HT4100
  78. Remanufactured 4.1 available
  79. 4.9 Belt Tensioner Question
  80. Rough Running 4.9 - Please Help !
  81. Removing the AIR pump, HT4100
  82. 4T60-E Transaxle, feels like park paw spring is worn out.
  83. Seville Swap: from 83 HT4100 to 81 368
  84. 86 seville 4.1 low engine power-issue
  85. leftover 4.x parts
  86. 4.5 RWD engines for sale?? would this work??
  87. '85 Seville HT 4100 MAP location & mystery connectors ?
  88. awesome 440T4->4T65E conversion
  89. Difficult to start engine in Eldorado 1983
  90. Rough Idle on low mileage 91 Eldorado
  91. "system problem"
  92. Purpose for detent switch and kickdown?
  93. Basics for operating ECM on 84 Deville HT4100??
  94. 4.5 Overheating. Need help
  95. PD08 and Spark Timing
  96. Where is the a/c low pressure valve on a 1990 Seville?
  97. 1985 DeVille Whats That, (Fuel System Canister Valve?)
  98. 4.5 will not go into timing mode, desperately seeking advice
  99. Torque Specs
  100. Looking to replace camshaft to fix lack of power & hesitation - ht4100
  101. HT 4100 engine problem
  102. 84 cadillac eldorado ht4100 rough idle at acceleration
  103. ISC Adjustment & the mysterious green connector
  104. Thinking of picking up an '83 Fleetwood HT4100
  105. Advice, please: 4.9 Cruise Control Cable Stuck
  106. 1995 Sedan Deville HEAD Gasket
  107. 88 seville instrument panel
  108. Need Help with timing/tune-up on 84 Cadillac Deville HT4100
  109. Bad Misfire on Low Mile 4.9 (1991 Eldorado)
  110. thinking about getting mods on 4.5
  111. Vapor Canister Filter
  112. Oil for 4100
  113. Code E49 Air Injection System Fault
  114. 4.5 distributor removal
  115. significant improvements in 94/95 4.9?
  116. Name the Emission Tube for 1990 4.5
  117. source for 4.x cylinder sleeves
  118. 4.9 throttle body interchange data
  119. Engine Swap Process
  120. 4.9 Individual Throttle Body project
  121. 91 Deville - skipping and no 1st or 4th gear-HELP
  122. 96 deville alternator
  123. Falling MPG - 1990 Deville/Fleetwood
  124. 4.5 carb and distributor conversion
  125. A/C Repair
  126. 4.9 running rough after spark plug change Help!
  127. New annoying message: "Change Oil Soon" (just changed it last month!)
  128. 4.9 Horrible Idle
  129. 1993 Distributor, and Minimum Air
  130. 4.1L Idle Speed Issues
  131. 4.9 blown head gasket
  132. codes i pulled from my cadi
  133. idle engine engine hot please help
  134. Oil in coolant, 4.5
  135. 1985 Cadillac El Dorado water pump!
  136. Bad A/C Delco Waterpump. 91 Eldo 4.9 Anything better than AC Delco Waterpumps?
  137. 90' 4.5L Deville Head Bolt Leaking
  138. 4.9 no crank
  139. car is dieing at idle. P048 current trouble code.
  140. 93 Seville 4.9L sporadic miss at idle. Spark Plugs?
  141. Intermittent throttle sticking
  142. Looking for HT4100 Cylinder head guide pin
  143. E 90 Code - VCC Brake Switch Signal Problem
  144. squeeling under the hood
  145. Broke hose
  146. A Time To Celebrate
  147. 7mpg average! Help if anyone can.
  148. Heater Core Replace BRRR COLD!
  149. WARNING! 4.9L Dayco Tensioner Pulley warning: DO NOT BUY #231081!!!
  150. Throttle Questions
  151. HT4100 (4.5 sleeves) Head Bolt Torque Sequence and Specifications?
  152. 1986 Seville HT4100-Overcooling issue
  153. Can't find the engine temperature switch.
  154. Need Help PLEASE HELP!!! Oil dipstick problem
  155. Cold Air Intake?
  156. Oil pan and pump
  157. Can bad ECM cause 85 fleetwood brougham ht4100 miss bad, backfire and barely run?
  158. New Car Got Questions????
  159. the notorious 4.1 thump
  160. Recently rebuilt 85 ht4100...was fine....all of a sudden struggling and backfiring
  161. 4100 Valve train not oiling
  162. E49 code and possible solutions.
  163. timing
  164. 1990 Seville-Message DTC R026 / RO33
  165. E47
  166. burning
  167. e23 and e27
  168. Idle speed control problem? 90 Deville 4.5
  169. E37 code manifold air temp. sensor
  170. 85 fleet ht4100 fwd
  171. Disributor slop question
  172. 1988 Cadillac DeVille 4.5L gas gauge issue
  173. Fuel Line
  174. 4.9 oil pump in 4.5
  175. Colder Spark Plugs
  176. Twinkling lights
  177. Stainless steel exhaust, 90 Deville
  178. 4.1 Intial Timing Question
  179. 92 Deville stalling and backfiring
  180. 4.1 TPS Question
  181. 4.5L Deville runnability issues/ emissions problems
  182. Can I supercharge my 2008 STS AWD?
  183. 85 eldo w/4100
  184. UGH watter pump gasket
  185. Do Not Overfill!
  186. Techheads, answer me this:
  187. allante 4.5! awesome
  188. Replacing head gasket on 1992 4.9
  189. Fuel Imbalance (Left and Right Bank)
  190. leaky rear main oil seal
  191. Persistant Leaking
  192. Coolant Header Tank
  193. Exhaust manifold gaskets
  194. How to adjust idle speed on '91 Eldorado 4,5l V8 ?
  195. Do I have a blown head? And should I replace my motor? 93 Sedan Deville 4.9L V8
  196. What engines are compatible with 93 Sedan Deville?
  197. 4100 to 307 swap (ITS ALIVE!)
  198. high idle after washing engine
  199. spark plugs
  200. 4.9 stumbling right off idle
  201. @50MPH & above; Doggy and slight vibration
  202. Trying to Identify this Hose
  203. 4.1 to a 4.5
  204. 4.x perf options
  205. 93 deville turn signal problems
  206. Oxygen Sensor Code 44
  207. 4.5 in an Isuzu Trooper
  208. 1990 Fleetwood fwd 4.5L Surges and looses power when warm
  209. 84 Eldorado torsion bar anchors
  210. power steering pump bracket
  211. cooling fans
  212. need to replace a couple fuel injectors, any advice before pulling the fuel rail, etc
  213. 84 eldo. antena
  214. replacing a 4.1
  215. Where do I connect Tach
  216. So how old is too old for injectors?
  217. 4.9L missing
  218. Ht4100 question
  219. HT4100 Exhaust Manifold Gaskets
  220. Transmission is shot
  221. 93 deville running great
  222. Fuel Pump runs, but car won't start!
  223. 4.5 distributer 180 out?
  224. 4.9 Distributor / Timing question
  225. Changing Final Drive ratio/ ECM tuning
  226. looking for a good 4100 mechanic
  227. '84 4.1 idles up and down when the A/C is on
  228. Transmission acting funny
  229. HT4100 upkeep and maintenence
  230. 1995 Deville EGR problems ?
  231. P.A.S.S. security system
  232. What is effected by an E0112?
  233. Clunkin Sound
  234. lost my top-end
  235. What is F15 code? ('90 DeVille 4.5)
  236. '84 Eldorado 4100 vacuum readings
  237. Interchangeability HT4100
  238. O2 sensors : 1 righ and 1 lean
  239. Just wanted to thank you guys
  240. '92 Fleetwood DeVille random stalling
  241. New Life in my 94 caddy
  242. Anyone done a 4100 head gasket replace?
  243. Low oil pressure - stop engine
  244. Fuel pump running, car not....
  245. 1996 deville with 200 deville engine swap.Possible??
  246. 92 Eldorado Valve Cover Gaskets
  247. HT4100 engine vacuum lines with pics
  248. 92 4.9L, not sure if radiator fans are coming on
  249. Shorted MAP Sensor Signal
  250. 85 HT4100 new remanufactured motor