: HT4100 4.1, 4.5, 4.9



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  1. 1994 Sedan deville 4.9L Stalls Well Driving Part 2
  2. what did i blow up? pics
  3. Just done the head gasket, think i may have messed it, help.
  4. 4.5 intake manifold on 87 4.1?
  5. 85 eldo ht4100 backfire, miss, stall
  6. Reman. Engine/Trans. What's the best company?
  7. 88 DeVille fan continues to run after I turn it off
  8. New Shell Rotella T with triple protection
  9. error codes
  10. '85 Seville 4.1L engine missing after tune-up.
  11. Help me! What is it?
  12. 93 DeVille Idle Problem
  13. 4.9 coolant flush and fill procedure!
  14. What do I need to know about the HT4100 Engine?
  15. Results of my Emissions Test
  16. Need help 91 Deville
  17. What should engine timing be when not in Timing Mode (25 degree BTDC?)
  18. Question having to do with the 4.9
  19. Simple rotor/distib cap question
  20. HT4100 85 Eldo. Header Issue
  21. Fuel Injector Replacement Tips
  22. clickinggg....
  23. No spark on '90 4.5 Seville
  24. computer accuracy
  25. Do I have to use a new A/C comp. or can I use a reman?
  26. 4.5 intake gasket replacement
  27. Life expectancy for 4.9 and 4T60E
  28. plug stuck in head
  29. Aluminum Heads?
  30. 2002 DeVille DTS maintenance
  31. ignition problems..
  32. Not a new problem
  33. I have a question, someone please explain.
  34. 91 Sedan Deville Gas Mileage ...
  35. 1990 deville hesitates
  36. Great, now I have MORE trouble codes!! E91 and E98
  37. 1994 Sedan deville 4.9L Stalls/dies well driving
  38. PCM Programming for 4.5L V8?
  39. Trouble Code E48 "EGR System Problem"....what exactly is it.
  40. 223-232f
  41. Trying to beat the heat....
  42. STP Fuel Injector Cleaner--it works!
  43. A starting we will go...
  44. 1990 deville 4.5 trouble code air management fault?
  45. 88 deville broke down need help
  46. ? easy way to remove 4.9 @ self serv yard?
  47. Sound like the egr to you guys?
  48. Trouble clearing codes
  49. 4.9 Bearing Thump--Who's Got It?
  50. When to replace O2 sensor?
  51. '92 deVille..surging, stuttering, stalling???
  52. 91 deville fuel injectors......
  53. motor rattle
  54. My car's 'puter done gone got brokeded (92 Eldo 4.9)
  55. 92 deville egr tubes ??
  56. 92' Deville Alternator/power Problem
  57. Changing TPS on 1993 Eldo 4.9
  58. O2S Help Please!
  59. Dead Cylinder - OH NOOOOOO!!!!
  60. A/C Hose Insulation Source
  61. Want your ISC problems solved? Look here...
  62. hmm, how do I get to that A/C compressor clutch?
  63. STOP ENGINE TEMP light problem.
  64. Brake light problem.
  65. Charge Battery Light On (No Codes) !!
  66. A Little help guys, please
  67. Green plug?
  68. How to check timing on an '85 Seville?
  69. No fuel pressure when ignition on, engine off
  70. 90 deville backfiring and running rough?
  71. 4.9 Eldorado Plugs/Wires install question
  72. Accel Wires
  73. Simple question
  74. 87 SDV E30 code
  75. 90 deville misfire
  76. Electrical problem + codes
  77. bad coolant leak: deville 4.5
  78. 1990 fleetwood won't run right - help
  79. 91 Deville 4.9 misses when hot outside
  80. 92 Deville throwing MAP codes, heats up and conks out.
  81. Cooling fans/AC problem
  82. Mufflers Bottom Line?
  83. 1993 Seville w/ 4.9L P041 Code
  84. HT4900 (4.9) Exhaust Manifold Interchangeability
  85. 94 Deville, odd noise and stalling now. Pics attached.
  86. Coolant Leak
  87. bad coolant leak: deville 4.5
  88. hesitation and backfire 4100
  89. 90 Coupe Deville engine problems
  90. 1990 deville hard stall on idle
  91. Cone Filter & Cold Air Intake
  92. Rough runing, missing?
  93. isc/driveability
  94. spudder of some sort
  95. 91 4.9 Runs Rich and Gas Mileage Question
  96. Hey Guys, Long time no chat, and need some input on a non input vss signal. Blew.....
  97. OLDS 350 swap
  98. 1984 eldo some new problems
  99. 4.9 EGR Removal???
  100. Recommended Spark Plugs
  101. 4.9 Running Rough...
  102. problem solved
  103. Changing Oil To Synthetic?
  104. 4.9 performance
  105. 4100 transmission
  106. Coolant System
  107. ECM says my MAT sensor is bad.
  108. Adjusting the timing
  109. PCM codes
  110. Deisel noise around 2000 rpm's
  111. Still having problems on 93 sedandeville
  112. Now im getting worried!
  113. 4100 Flowmaster 80 series VIDEOS
  114. First Car, 4.9 Eldorado. Performance Upgrades HELP? (car-noob)
  115. Cold Air Intake?
  116. 4.1 codes
  117. Helicoil vs Timesert on non N* (4.1, 4.5, 4.9)
  118. Cadillac 4.9 Head Gasket Photos
  119. Where to get Exhaust Manifold Studs
  120. Do your own oil changes.
  121. Ping Ping Go Away!!!
  122. F48
  123. 1985 Seville 4100
  124. Running fuel injector cleaner through your gas tank
  125. Cleaning the throttle body plates!
  126. Post your average MPG
  127. 1984 Throttle body need help, please.
  128. Why is my caddy over heating ?
  129. Poor mpg on 93 sedandeville
  130. Squeeking Noise!
  131. Rwd/fwd Ht4100
  132. TRANS ID'ing
  133. HT4100 Check In
  134. 15W40 delco with GM oil supplement
  135. Performance transmission rebuild...
  136. 4.5 L tranny bolt pattern
  137. isc motor re-learn
  138. 4.9 Extremely rough running issue
  139. Stripped Head Bolt Hole Where Do I Get Helicoil?
  140. engine swap 4100 to 305 chevy
  141. 1984 Cadillac - 4100 firing order and distributor rotation
  142. '92 Eldo Problems
  143. overheating, now power, 83 coupe deville ht4100
  144. Whats the brown stuff on my valves?
  145. Doing My 4.9 Head Gasket Looking for Advice on Parts
  146. ecm replacement
  147. Recommended sealant for water pump gasket on 91 deville
  148. What do i coat the head bolts with?
  149. Bad Map on 91 Deville?
  150. 4.9 or northstar?? which has less problems??
  151. Amsoil test results
  152. 91 Seville Overheat
  153. Are Head Bolts T.t.y Or Not (conflicting Answers)???????
  154. Iron heads
  155. ??? ???E30 isc code??? ???
  156. Got rusty tubes?
  157. Squealing under hood when cold
  158. What is this?????
  159. Noise at EGR conditions
  160. '90 DeVille has high NOX at low speed, failed smog. Some help needed.
  161. exhaust ideas
  162. 1990 fleetwood won't run right - help
  163. 89 deville stumble/miss on acceleration
  164. Diagnostic Mode
  165. Curious Fuel Pump Behavior
  166. Cooling fan fault
  167. High Idle. ISC? Need Advice!!!!
  168. 92 STS Engine Trouble
  169. head gasket, intake gasket or what?
  170. Engine RPM.... is this normal?
  171. 91 Eldorado No Crank B334 code system problem
  172. E67!!!!!! how do i fix
  173. Video of my 4.9 5spd in Action.
  174. broke water pump on my 88!
  175. In search of a new/rebuilt vacuum pump...
  176. Help with the codes please!!
  177. Digital Fuel Injection vs Crossfire Injection
  178. Im Having Problems With My 86 Cadillac
  179. Rust in my cooling system, PLEASE HELP!
  180. 3/8"-ish metal line off of throttle body runs where... ..?
  181. 1990 sedan deville isc crap =(
  182. 5 liter fuel injectors in a 4.9 project!
  183. Cylinder Pressure Test Question???????
  184. Trans Problem?
  185. I need a quick answer
  186. ISC Motor question
  187. Question on use of Rotella 15W-40
  188. 82 HT4100 Hearse Fuel System Codes
  189. Is my EGR valave toast?
  190. just died
  191. Newbie 4100 owner advice
  192. Cleaning under hood - recommendations?
  193. It WON'T slow down...
  194. Spark plugs and spark knock
  195. Where is the control valve assembly for the transmission??
  196. Does the ISC motor affect the tranny shifting/downshifting???
  197. Ethanol in your Caddy....?!
  198. Any Ideas? 93 Deville Stalling
  199. Camshaft position sensor
  200. What's wrong with the tranny?
  201. 1990 Sedan Deville - Any Help is Appreciated
  202. Changing Water Pump on 95 Deville
  203. engine ping
  204. hesitation,back fire and bad Idle 4.9
  205. 4.9 performance exhaust
  206. Any Neat Tricks Replacing Lh Head Gasket???
  207. real cold air intake(no short ram)4.9
  208. Throttle Body 1984 HT4100
  209. 4.9 exploding mufflers
  210. Northstar engine builders in So Cal?
  211. A/C Compressor Only Works at High RPM?
  212. How often do you have to calibrate your TPS?
  213. Its not the fuel pump.
  214. Swapping 4.9 to 4.6N*
  215. 4100 coolant loss #3 cylinder
  216. will 4.5L heads bolt up to a 4.1L
  217. Engine Miss...driving me mad...
  218. Compression ratios?
  219. They see me coming OR So they think
  220. They see me coming OR So they think
  221. exhaust leak
  222. Changing Thermostat on 88 Coupe Deville
  223. HT4100 flooding out badly. Code 15,20,52 ?
  224. GM Top Engine Cleaner
  225. Coolant temp gets up around 230 some times
  226. Toasted fuel pump?
  227. What is that tube for?
  228. Finally bought some things for the car !
  229. 4.9L What the Hell is this? ...
  230. Is this converter alright?
  231. Professional injector cleaning?
  232. Is my fuel pressure low???? 93 Deville
  233. E62 Cruise control vacum solenoid error code
  234. I am going to make a cut out
  235. Problem adding a cutout to '90 Seville exhaust system,
  236. Flawed logic or a..
  237. transmission bolt up from 4.5L to 4.1L HT4100
  238. Does Anyone Have A Step By Step Guide To Adjusting The Tps?
  239. All Show And No Go
  240. Coolant issues must be contagious
  241. Coolant gushed out on highway, engine rattles
  242. Yet another exhaust theory question.
  243. 4.5 sounds real good with no cat
  244. Oil Pan Drain Plug Spins
  245. 87 Seville...Engine problems, knocking, overheating,do I shoot it?
  246. Can I use a regular fuel filter?
  247. Where is the fuel filter?
  248. RWD tranny for 4.9L??
  249. please help!!!!!!!
  250. Did I go overboard?