: HT4100 4.1, 4.5, 4.9



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