: HT4100 4.1, 4.5, 4.9



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  1. 4.9 low rpm/light throttle stumbling/bucking
  2. 4.9L 91 Seville power loss... at a loss..
  3. 1987 Deville 4.1 to 4.9 Conversion
  4. 97 Seville cooling
  5. Vacuum connection for heating?
  6. 1994 Deville 4.9 Engine Stalling
  7. Oil pressure specs for 4.1 at idle
  8. Oil pressure specs
  9. 91 Deville engine skip
  10. 4t60e chain and sprocket question
  11. 1st and 2nd design oil pressure switch?
  12. 1983 sed Deville 4100 0ut 1999-2002 Chevy 5.3 in
  13. 4100HT shuts down in sharp left corners
  14. What are my engine replacement options - Current engine is a transverse HT4100
  15. Vid: Cadillacs 1982 HT4100, the Development and Manufacturing
  16. JUST BOUGHT 1995 DEVILLE. Stalling and MAP Code issue?? and Possible related problem
  17. 4.9L coolant issues
  18. Upgrading and restoring a 4.9
  19. Brown sludge?
  20. oil pressure light 4.9 liter
  21. pvc valve housing possible vacuum leak?
  22. ACDELCO best water pump?
  23. 84 CDV Code 37 and Code 53 (need help)
  24. water pump tool?
  25. 4.5 hesitation, stumble, poor mpg; smog pump bypassed
  26. Replacing Air pump fan belt Problems
  27. I need a pic if anybody's got one
  28. 84 CDV need help on firing order and distributor wiring
  29. 4100 stalling after intake gasket repair
  30. 4.9 Injectors
  31. 1983 ht4100 enginge lower end knocking
  32. Ht4100 :(
  33. Can soneone give me a part number?
  34. 4.5 belt tensioner; is bearing replaceable?
  35. 4.9 litre tune up 94 deville
  36. Starting issue -- 91 Eldorado
  37. 4.9 Info Needed
  38. Oh Sh*%! I lost my head.
  39. Remove oil pump on cadillac eldorado 1985 ?
  40. 1985 eldorado biarritz won't start
  41. 4.9 pulled head bolt threads
  42. Hesitation on an 83 cadillac fleetwood brougham with HT4100 motor
  43. 95 sedan shuts down while driving
  44. 93 SDV 4.9 spark plug replacement post mortem (can't edit other thread)
  45. Driving along and suddenly, DEAD!
  46. Starter Gear Clearance
  47. Replacing original plugs/wires 93 SDV........wish me luck!
  48. 4.9 - intake
  49. Idle Problems After Mechanic
  50. Lurching '91 Deville
  51. Can FWD HT 4100 eng and transmission be installed together?
  52. '82 Fleetwood D'elegance coupe problem :(
  53. replacing water pump on my old '84 DeVille 4.1 engine
  54. What are the symptoms of CVJ’s failing?
  55. distributor question
  56. Car not starting
  57. Problem with 1990 Seville 4.5
  58. change spark plugs, 1989 seville 4.5
  59. Oil Leaking from "Everywhere"
  60. 4.1 to 4.1 swap, how hard can it really be???
  61. School of hard knocks
  62. 90 deville 4.5 stalling problems
  63. 1983 Eldorado engine running problem!
  64. Carburetor on V8 4100 HT Eldorado 1985 ?
  65. need some help with my 1994 Deville 4.9L v8
  66. Did I miss anything?
  67. hard starting 1997 STS
  68. 1991 Cadillac Biarittz - Engine problem.
  69. First Caddy Questions
  70. The best engine to put in my Eldo Cadillac?
  71. Stumped!
  72. 1990 cadillac deville
  73. Please Help - error code 19 on 84 Deville ht4100
  74. Fuel Pump Relay - 84 Deville HT4100
  75. Where is the oil pressure switch located - 84 Deville HT4100
  76. Remanufactured 4.1 available
  77. 4.9 Belt Tensioner Question
  78. Rough Running 4.9 - Please Help !
  79. Removing the AIR pump, HT4100
  80. 4T60-E Transaxle, feels like park paw spring is worn out.
  81. Seville Swap: from 83 HT4100 to 81 368
  82. 86 seville 4.1 low engine power-issue
  83. leftover 4.x parts
  84. 4.5 RWD engines for sale?? would this work??
  85. '85 Seville HT 4100 MAP location & mystery connectors ?
  86. awesome 440T4->4T65E conversion
  87. Difficult to start engine in Eldorado 1983
  88. Rough Idle on low mileage 91 Eldorado
  89. "system problem"
  90. Purpose for detent switch and kickdown?
  91. Basics for operating ECM on 84 Deville HT4100??
  92. 4.5 Overheating. Need help
  93. PD08 and Spark Timing
  94. Where is the a/c low pressure valve on a 1990 Seville?
  95. 1985 DeVille Whats That, (Fuel System Canister Valve?)
  96. 4.5 will not go into timing mode, desperately seeking advice
  97. Torque Specs
  98. Looking to replace camshaft to fix lack of power & hesitation - ht4100
  99. HT 4100 engine problem
  100. 84 cadillac eldorado ht4100 rough idle at acceleration
  101. ISC Adjustment & the mysterious green connector
  102. Thinking of picking up an '83 Fleetwood HT4100
  103. Advice, please: 4.9 Cruise Control Cable Stuck
  104. 1995 Sedan Deville HEAD Gasket
  105. 88 seville instrument panel
  106. Need Help with timing/tune-up on 84 Cadillac Deville HT4100
  107. Bad Misfire on Low Mile 4.9 (1991 Eldorado)
  108. thinking about getting mods on 4.5
  109. Vapor Canister Filter
  110. Oil for 4100
  111. Code E49 Air Injection System Fault
  112. 4.5 distributor removal
  113. significant improvements in 94/95 4.9?
  114. Name the Emission Tube for 1990 4.5
  115. source for 4.x cylinder sleeves
  116. 4.9 throttle body interchange data
  117. Engine Swap Process
  118. 4.9 Individual Throttle Body project
  119. 91 Deville - skipping and no 1st or 4th gear-HELP
  120. 96 deville alternator
  121. Falling MPG - 1990 Deville/Fleetwood
  122. 4.5 carb and distributor conversion
  123. A/C Repair
  124. 4.9 running rough after spark plug change Help!
  125. New annoying message: "Change Oil Soon" (just changed it last month!)
  126. 4.9 Horrible Idle
  127. 1993 Distributor, and Minimum Air
  128. 4.1L Idle Speed Issues
  129. 4.9 blown head gasket
  130. codes i pulled from my cadi
  131. idle engine engine hot please help
  132. Oil in coolant, 4.5
  133. 1985 Cadillac El Dorado water pump!
  134. Bad A/C Delco Waterpump. 91 Eldo 4.9 Anything better than AC Delco Waterpumps?
  135. 90' 4.5L Deville Head Bolt Leaking
  136. 4.9 no crank
  137. car is dieing at idle. P048 current trouble code.
  138. 93 Seville 4.9L sporadic miss at idle. Spark Plugs?
  139. Intermittent throttle sticking
  140. Looking for HT4100 Cylinder head guide pin
  141. E 90 Code - VCC Brake Switch Signal Problem
  142. squeeling under the hood
  143. Broke hose
  144. A Time To Celebrate
  145. 7mpg average! Help if anyone can.
  146. Heater Core Replace BRRR COLD!
  147. WARNING! 4.9L Dayco Tensioner Pulley warning: DO NOT BUY #231081!!!
  148. Throttle Questions
  149. HT4100 (4.5 sleeves) Head Bolt Torque Sequence and Specifications?
  150. 1986 Seville HT4100-Overcooling issue
  151. Can't find the engine temperature switch.
  152. Need Help PLEASE HELP!!! Oil dipstick problem
  153. Cold Air Intake?
  154. Oil pan and pump
  155. Can bad ECM cause 85 fleetwood brougham ht4100 miss bad, backfire and barely run?
  156. New Car Got Questions????
  157. the notorious 4.1 thump
  158. Recently rebuilt 85 ht4100...was fine....all of a sudden struggling and backfiring
  159. 4100 Valve train not oiling
  160. E49 code and possible solutions.
  161. timing
  162. 1990 Seville-Message DTC R026 / RO33
  163. E47
  164. burning
  165. e23 and e27
  166. Idle speed control problem? 90 Deville 4.5
  167. E37 code manifold air temp. sensor
  168. 85 fleet ht4100 fwd
  169. Disributor slop question
  170. 1988 Cadillac DeVille 4.5L gas gauge issue
  171. Fuel Line
  172. 4.9 oil pump in 4.5
  173. Colder Spark Plugs
  174. Twinkling lights
  175. Stainless steel exhaust, 90 Deville
  176. 4.1 Intial Timing Question
  177. 92 Deville stalling and backfiring
  178. 4.1 TPS Question
  179. 4.5L Deville runnability issues/ emissions problems
  180. Can I supercharge my 2008 STS AWD?
  181. 85 eldo w/4100
  182. UGH watter pump gasket
  183. Do Not Overfill!
  184. Techheads, answer me this:
  185. allante 4.5! awesome
  186. Replacing head gasket on 1992 4.9
  187. Fuel Imbalance (Left and Right Bank)
  188. leaky rear main oil seal
  189. Persistant Leaking
  190. Coolant Header Tank
  191. Exhaust manifold gaskets
  192. How to adjust idle speed on '91 Eldorado 4,5l V8 ?
  193. Do I have a blown head? And should I replace my motor? 93 Sedan Deville 4.9L V8
  194. What engines are compatible with 93 Sedan Deville?
  195. 4100 to 307 swap (ITS ALIVE!)
  196. high idle after washing engine
  197. spark plugs
  198. 4.9 stumbling right off idle
  199. @50MPH & above; Doggy and slight vibration
  200. Trying to Identify this Hose
  201. 4.1 to a 4.5
  202. 4.x perf options
  203. 93 deville turn signal problems
  204. Oxygen Sensor Code 44
  205. 4.5 in an Isuzu Trooper
  206. 1990 Fleetwood fwd 4.5L Surges and looses power when warm
  207. 84 Eldorado torsion bar anchors
  208. power steering pump bracket
  209. cooling fans
  210. need to replace a couple fuel injectors, any advice before pulling the fuel rail, etc
  211. 84 eldo. antena
  212. replacing a 4.1
  213. Where do I connect Tach
  214. So how old is too old for injectors?
  215. 4.9L missing
  216. Ht4100 question
  217. HT4100 Exhaust Manifold Gaskets
  218. Transmission is shot
  219. 93 deville running great
  220. Fuel Pump runs, but car won't start!
  221. 4.5 distributer 180 out?
  222. 4.9 Distributor / Timing question
  223. Changing Final Drive ratio/ ECM tuning
  224. looking for a good 4100 mechanic
  225. '84 4.1 idles up and down when the A/C is on
  226. Transmission acting funny
  227. HT4100 upkeep and maintenence
  228. 1995 Deville EGR problems ?
  229. P.A.S.S. security system
  230. What is effected by an E0112?
  231. Clunkin Sound
  232. lost my top-end
  233. What is F15 code? ('90 DeVille 4.5)
  234. '84 Eldorado 4100 vacuum readings
  235. Interchangeability HT4100
  236. O2 sensors : 1 righ and 1 lean
  237. Just wanted to thank you guys
  238. '92 Fleetwood DeVille random stalling
  239. New Life in my 94 caddy
  240. Anyone done a 4100 head gasket replace?
  241. Low oil pressure - stop engine
  242. Fuel pump running, car not....
  243. 1996 deville with 200 deville engine swap.Possible??
  244. 92 Eldorado Valve Cover Gaskets
  245. HT4100 engine vacuum lines with pics
  246. 92 4.9L, not sure if radiator fans are coming on
  247. Shorted MAP Sensor Signal
  248. 85 HT4100 new remanufactured motor
  249. S10 Chevy p'up; swap in a 4.5 or 4.9?
  250. Replacing the starter on a 1987 Cadillac Eldorado with 4.1L V8