: HT4100 4.1, 4.5, 4.9



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