: HT4100 4.1, 4.5, 4.9



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