: HT4100 4.1, 4.5, 4.9



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  1. What's wrong with my car? The mystery continues...
  2. When i go to replace the mains....
  3. 4t60-E Shudder?
  4. last year
  5. All 4.x engine service parts are discontinued?
  6. Does anybody have a spare 4.9?
  7. Knock, Knock, Knock, 4.9L
  8. Alright, i'm going in!! I need a few parts and info please.
  9. 90 4.5L Idle Learn Procedure?
  10. I have a slight problem,,, HT4100
  11. Fuel Pressure Test Fitting
  12. 1985 Seville code e15
  13. Cooling Fan Module--Where can I get one?
  14. Bars Leaks Head Gasket Repair
  15. Code E30 on 85 Deville and Vacuum Pumps
  16. Copper Gaskets?
  17. Battery/ALternator area cracking noise?
  18. Oil Analysis: Proof is in the results
  19. 1992 Eldo
  20. That Funky Emissions Tubing
  21. Hey Guys long time no chat, and long time not wanting to start either.
  22. The once a year survival kit for the 4.X series
  23. 4.9 runs rough black exhaust from tail pipe
  24. 1985 Seville harsh shifting tranny
  25. Odd brief buzzing noise from undercarriage
  26. i need a 4t60e guru; i am hating mine
  27. what is up with my car
  28. Early vs. Late 1985 FWD 4100
  29. Strange ISC
  30. 1994 cadillac deville engine knocks when warm
  31. 4.5 --> 4.9
  32. Getting ready for water pump removal
  33. 1988 Eldorado 4.5
  34. 1985 FWD HT4100 Running rough
  35. Question about spark plugs!
  36. TPS problem?
  37. 4100 Mpg
  38. 87 deville 4100 shift problems
  39. 1991 DeVille Speedometer/Transmission Trouble.
  40. Starter solenoid replacement
  41. 4.9 Injector Replacement Questions
  42. 92 STS error code A048 what does that mean?
  43. 1994 Deville 4.9 Idler pulleys
  44. Please Help!!! Rough running 4.9 , Help!!
  45. 1994 Deville 4.9 spark knock
  46. 85 Sedan Deville Stalls after 20 Miles
  47. 4.9 Potential? (Split from "4.9 to a 5.0?")
  48. 94 Deville 4.9 switching complete sending/fuel pumps
  49. 4.9 to a 5.0?
  50. Fan Runs all the time on 4.9, engine runs real cold
  51. AHHH HELP!!! Keep overheating
  52. 4.5 Vs. 4.9
  53. Fuel Mileage vs. Data Center
  54. 92 4.9 flat cam?
  55. Does twitchy tach mean misfire?
  56. ht 4100 Hesitation
  57. 1987 SDV 4.1 L V-8 Available
  58. 89 4.5 TPS installations
  59. 89 Fleetword code (30) ISC Circuit
  60. Boiling coolant, fans not running, ...
  61. no start after warm engine
  62. 1989 4.5 Idle Speed Motor
  63. 1989 Fleetwood Idle Speed Motor
  64. Valve Adjustment 4.9 Engine
  65. remaned 4.1/4.5 short block
  66. 4100 to LT1 swap 83 Coupe Deville
  67. Cylinder head removal
  68. Very poor MPG 1992 Deville ?? HELP!!??!!
  69. turn your 4.9 into a performance engine
  70. engine system fault E046
  71. Take a look at this.
  72. 4.9 exhaust manifold crack, common?
  73. 4.9 changes by year??
  74. 1994 Sedan deville 4.9L Stalls Well Driving Part 2
  75. what did i blow up? pics
  76. Just done the head gasket, think i may have messed it, help.
  77. 4.5 intake manifold on 87 4.1?
  78. 85 eldo ht4100 backfire, miss, stall
  79. Reman. Engine/Trans. What's the best company?
  80. 88 DeVille fan continues to run after I turn it off
  81. New Shell Rotella T with triple protection
  82. error codes
  83. '85 Seville 4.1L engine missing after tune-up.
  84. Help me! What is it?
  85. 93 DeVille Idle Problem
  86. 4.9 coolant flush and fill procedure!
  87. What do I need to know about the HT4100 Engine?
  88. Results of my Emissions Test
  89. Need help 91 Deville
  90. What should engine timing be when not in Timing Mode (25 degree BTDC?)
  91. Question having to do with the 4.9
  92. Simple rotor/distib cap question
  93. HT4100 85 Eldo. Header Issue
  94. Fuel Injector Replacement Tips
  95. clickinggg....
  96. No spark on '90 4.5 Seville
  97. computer accuracy
  98. Do I have to use a new A/C comp. or can I use a reman?
  99. 4.5 intake gasket replacement
  100. Life expectancy for 4.9 and 4T60E
  101. plug stuck in head
  102. Aluminum Heads?
  103. 2002 DeVille DTS maintenance
  104. ignition problems..
  105. Not a new problem
  106. I have a question, someone please explain.
  107. 91 Sedan Deville Gas Mileage ...
  108. 1990 deville hesitates
  109. Great, now I have MORE trouble codes!! E91 and E98
  110. 1994 Sedan deville 4.9L Stalls/dies well driving
  111. PCM Programming for 4.5L V8?
  112. Trouble Code E48 "EGR System Problem"....what exactly is it.
  113. 223-232f
  114. Trying to beat the heat....
  115. STP Fuel Injector Cleaner--it works!
  116. A starting we will go...
  117. 1990 deville 4.5 trouble code air management fault?
  118. 88 deville broke down need help
  119. ? easy way to remove 4.9 @ self serv yard?
  120. Sound like the egr to you guys?
  121. Trouble clearing codes
  122. 4.9 Bearing Thump--Who's Got It?
  123. When to replace O2 sensor?
  124. '92 deVille..surging, stuttering, stalling???
  125. 91 deville fuel injectors......
  126. motor rattle
  127. My car's 'puter done gone got brokeded (92 Eldo 4.9)
  128. 92 deville egr tubes ??
  129. 92' Deville Alternator/power Problem
  130. Changing TPS on 1993 Eldo 4.9
  131. O2S Help Please!
  132. Dead Cylinder - OH NOOOOOO!!!!
  133. A/C Hose Insulation Source
  134. Want your ISC problems solved? Look here...
  135. hmm, how do I get to that A/C compressor clutch?
  136. STOP ENGINE TEMP light problem.
  137. Brake light problem.
  138. Charge Battery Light On (No Codes) !!
  139. A Little help guys, please
  140. Green plug?
  141. How to check timing on an '85 Seville?
  142. No fuel pressure when ignition on, engine off
  143. 90 deville backfiring and running rough?
  144. 4.9 Eldorado Plugs/Wires install question
  145. Accel Wires
  146. Simple question
  147. 87 SDV E30 code
  148. 90 deville misfire
  149. Electrical problem + codes
  150. bad coolant leak: deville 4.5
  151. 1990 fleetwood won't run right - help
  152. 91 Deville 4.9 misses when hot outside
  153. 92 Deville throwing MAP codes, heats up and conks out.
  154. Cooling fans/AC problem
  155. Mufflers Bottom Line?
  156. 1993 Seville w/ 4.9L P041 Code
  157. HT4900 (4.9) Exhaust Manifold Interchangeability
  158. 94 Deville, odd noise and stalling now. Pics attached.
  159. Coolant Leak
  160. bad coolant leak: deville 4.5
  161. hesitation and backfire 4100
  162. 90 Coupe Deville engine problems
  163. 1990 deville hard stall on idle
  164. Cone Filter & Cold Air Intake
  165. Rough runing, missing?
  166. isc/driveability
  167. spudder of some sort
  168. 91 4.9 Runs Rich and Gas Mileage Question
  169. Hey Guys, Long time no chat, and need some input on a non input vss signal. Blew.....
  170. OLDS 350 swap
  171. 1984 eldo some new problems
  172. 4.9 EGR Removal???
  173. Recommended Spark Plugs
  174. 4.9 Running Rough...
  175. problem solved
  176. Changing Oil To Synthetic?
  177. 4.9 performance
  178. 4100 transmission
  179. Coolant System
  180. ECM says my MAT sensor is bad.
  181. Adjusting the timing
  182. PCM codes
  183. Deisel noise around 2000 rpm's
  184. Still having problems on 93 sedandeville
  185. Now im getting worried!
  186. 4100 Flowmaster 80 series VIDEOS
  187. First Car, 4.9 Eldorado. Performance Upgrades HELP? (car-noob)
  188. Cold Air Intake?
  189. 4.1 codes
  190. Helicoil vs Timesert on non N* (4.1, 4.5, 4.9)
  191. Cadillac 4.9 Head Gasket Photos
  192. Where to get Exhaust Manifold Studs
  193. Do your own oil changes.
  194. Ping Ping Go Away!!!
  195. F48
  196. 1985 Seville 4100
  197. Running fuel injector cleaner through your gas tank
  198. Cleaning the throttle body plates!
  199. Post your average MPG
  200. 1984 Throttle body need help, please.
  201. Why is my caddy over heating ?
  202. Poor mpg on 93 sedandeville
  203. Squeeking Noise!
  204. Rwd/fwd Ht4100
  205. TRANS ID'ing
  206. HT4100 Check In
  207. 15W40 delco with GM oil supplement
  208. Performance transmission rebuild...
  209. 4.5 L tranny bolt pattern
  210. isc motor re-learn
  211. 4.9 Extremely rough running issue
  212. Stripped Head Bolt Hole Where Do I Get Helicoil?
  213. engine swap 4100 to 305 chevy
  214. 1984 Cadillac - 4100 firing order and distributor rotation
  215. '92 Eldo Problems
  216. overheating, now power, 83 coupe deville ht4100
  217. Whats the brown stuff on my valves?
  218. Doing My 4.9 Head Gasket Looking for Advice on Parts
  219. ecm replacement
  220. Recommended sealant for water pump gasket on 91 deville
  221. What do i coat the head bolts with?
  222. Bad Map on 91 Deville?
  223. 4.9 or northstar?? which has less problems??
  224. Amsoil test results
  225. 91 Seville Overheat
  226. Are Head Bolts T.t.y Or Not (conflicting Answers)???????
  227. Iron heads
  228. ??? ???E30 isc code??? ???
  229. Got rusty tubes?
  230. Squealing under hood when cold
  231. What is this?????
  232. Noise at EGR conditions
  233. '90 DeVille has high NOX at low speed, failed smog. Some help needed.
  234. exhaust ideas
  235. 1990 fleetwood won't run right - help
  236. 89 deville stumble/miss on acceleration
  237. Diagnostic Mode
  238. Curious Fuel Pump Behavior
  239. Cooling fan fault
  240. High Idle. ISC? Need Advice!!!!
  241. 92 STS Engine Trouble
  242. head gasket, intake gasket or what?
  243. Engine RPM.... is this normal?
  244. 91 Eldorado No Crank B334 code system problem
  245. E67!!!!!! how do i fix
  246. Video of my 4.9 5spd in Action.
  247. broke water pump on my 88!
  248. In search of a new/rebuilt vacuum pump...
  249. Help with the codes please!!
  250. Digital Fuel Injection vs Crossfire Injection