: HT4100 4.1, 4.5, 4.9



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