: HT4100 4.1, 4.5, 4.9



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  1. 1993 Cadillac Seville: Please Help starting problem
  2. Bad coil?
  3. Rebuilding a tbi on 89 deville
  4. I Broke it
  5. 4.9 Surges After Hot Start
  6. Poor mileage and slighly high HC levels
  7. engine oil cooler lines
  8. Smoke out of exhaust
  9. Cleaned out my EGR tubes today, my E.4.8 code is gone!
  10. code help
  11. Low mileage 4.9 Idling Rough Engine Sputters and quits
  12. First time Caddy owner needs some advice please
  13. Trouble with diagnostics
  14. changing oil pump in 90 deville 4.5
  15. Help I dont want to get rid of my car BUT!
  16. Has anyone changed their catalytic converter?
  17. 4.9 Liter idle
  18. Removing hydraulic fittings
  19. How many miles on the 4.9? ?
  20. 88 Sedan Deville not liking the winter
  21. Coolant hose to blower motor
  22. Timing Question
  23. '84 Eldorado blown head gasket?
  24. Oil pan heater?
  25. 4.9 Deville 95 whining noise like supercharger..
  26. Location of the CAM Position Sensor on the 95 4.9L deville?
  27. YES, i did it!!! All went well!
  28. 92 Eldo 4.9 for sale
  29. 4.5 water pump
  30. 93 4.9 STS wont start
  31. DESPERATELY Need Help!!! 85 CDV
  32. Trying to find good price on Allante gear reduction to use on my 4.9
  33. How to clean out EGR valves and throttle body?
  34. time for engine replacement soon-- help!
  35. Heater
  36. Hard starting
  37. 4.5 differences
  38. E98 rectification
  39. 87 fleetwood new ignition problem
  40. 1985 deville 4.1 Injector fuse keeps blowing
  41. PCM override, PS10
  42. EGR solenoid, is it normal?
  43. Get a LARGER capacity, 3 row radiator?
  44. Smoky when at full throttle!
  45. What does the code F.8.5 mean?
  46. 87 fleetwood 4.1 three problems,advice please!
  47. Removed Distributor--Question Before I Restart
  48. Changed the oil pump, lifter still taps on occasion warmed up..
  49. 87 deville, E48, EGR system problem
  50. Additive for newly remaned 86 DeVille Trans??
  51. Is it possible for a 4.9 main bearing thump to get progressively worse?
  52. 1989 Sedandeville issues
  53. 15W-40 Oil .....
  54. Fuel
  55. 82 eldorado alternator bracket
  56. 85 Deville ISC Problem--Might Have the Answer
  57. Help me Please!!!
  58. Weird idea
  59. Engine miss
  60. Pulled a thread
  61. E12 - No Distributor Signal???
  62. computer interchange, '90 Seville?
  63. Where Can I get some chips......
  64. Oil leak source...?
  65. well, i did it but...
  66. HT4100 ECM/BCM Problem?!
  67. #$$%^%@#$% damn .....floods on hot restart
  68. can't flush out "rubber glue type" coolant additive... what to do?
  69. Transmission Shift cable
  70. HT4100 ISC Help
  71. 4t60-E going out
  72. Fuel Issues - Please Help!
  73. 4t60-E FDR and the computer
  74. Fixed my car! Need help on one more thing...
  75. What's wrong with my car? The mystery continues...
  76. When i go to replace the mains....
  77. 4t60-E Shudder?
  78. last year
  79. All 4.x engine service parts are discontinued?
  80. Does anybody have a spare 4.9?
  81. Knock, Knock, Knock, 4.9L
  82. Alright, i'm going in!! I need a few parts and info please.
  83. 90 4.5L Idle Learn Procedure?
  84. I have a slight problem,,, HT4100
  85. Fuel Pressure Test Fitting
  86. 1985 Seville code e15
  87. Cooling Fan Module--Where can I get one?
  88. Bars Leaks Head Gasket Repair
  89. Code E30 on 85 Deville and Vacuum Pumps
  90. Copper Gaskets?
  91. Battery/ALternator area cracking noise?
  92. Oil Analysis: Proof is in the results
  93. 1992 Eldo
  94. That Funky Emissions Tubing
  95. Hey Guys long time no chat, and long time not wanting to start either.
  96. The once a year survival kit for the 4.X series
  97. 4.9 runs rough black exhaust from tail pipe
  98. 1985 Seville harsh shifting tranny
  99. Odd brief buzzing noise from undercarriage
  100. i need a 4t60e guru; i am hating mine
  101. what is up with my car
  102. Early vs. Late 1985 FWD 4100
  103. Strange ISC
  104. 1994 cadillac deville engine knocks when warm
  105. 4.5 --> 4.9
  106. Getting ready for water pump removal
  107. 1988 Eldorado 4.5
  108. 1985 FWD HT4100 Running rough
  109. Question about spark plugs!
  110. TPS problem?
  111. 4100 Mpg
  112. 87 deville 4100 shift problems
  113. 1991 DeVille Speedometer/Transmission Trouble.
  114. Starter solenoid replacement
  115. 4.9 Injector Replacement Questions
  116. 92 STS error code A048 what does that mean?
  117. 1994 Deville 4.9 Idler pulleys
  118. Please Help!!! Rough running 4.9 , Help!!
  119. 1994 Deville 4.9 spark knock
  120. 85 Sedan Deville Stalls after 20 Miles
  121. 4.9 Potential? (Split from "4.9 to a 5.0?")
  122. 94 Deville 4.9 switching complete sending/fuel pumps
  123. 4.9 to a 5.0?
  124. Fan Runs all the time on 4.9, engine runs real cold
  125. AHHH HELP!!! Keep overheating
  126. 4.5 Vs. 4.9
  127. Fuel Mileage vs. Data Center
  128. 92 4.9 flat cam?
  129. Does twitchy tach mean misfire?
  130. ht 4100 Hesitation
  131. 1987 SDV 4.1 L V-8 Available
  132. 89 4.5 TPS installations
  133. 89 Fleetword code (30) ISC Circuit
  134. Boiling coolant, fans not running, ...
  135. no start after warm engine
  136. 1989 4.5 Idle Speed Motor
  137. 1989 Fleetwood Idle Speed Motor
  138. Valve Adjustment 4.9 Engine
  139. remaned 4.1/4.5 short block
  140. 4100 to LT1 swap 83 Coupe Deville
  141. Cylinder head removal
  142. Very poor MPG 1992 Deville ?? HELP!!??!!
  143. turn your 4.9 into a performance engine
  144. engine system fault E046
  145. Take a look at this.
  146. 4.9 exhaust manifold crack, common?
  147. 4.9 changes by year??
  148. 1994 Sedan deville 4.9L Stalls Well Driving Part 2
  149. what did i blow up? pics
  150. Just done the head gasket, think i may have messed it, help.
  151. 4.5 intake manifold on 87 4.1?
  152. 85 eldo ht4100 backfire, miss, stall
  153. Reman. Engine/Trans. What's the best company?
  154. 88 DeVille fan continues to run after I turn it off
  155. New Shell Rotella T with triple protection
  156. error codes
  157. '85 Seville 4.1L engine missing after tune-up.
  158. Help me! What is it?
  159. 93 DeVille Idle Problem
  160. 4.9 coolant flush and fill procedure!
  161. What do I need to know about the HT4100 Engine?
  162. Results of my Emissions Test
  163. Need help 91 Deville
  164. What should engine timing be when not in Timing Mode (25 degree BTDC?)
  165. Question having to do with the 4.9
  166. Simple rotor/distib cap question
  167. HT4100 85 Eldo. Header Issue
  168. Fuel Injector Replacement Tips
  169. clickinggg....
  170. No spark on '90 4.5 Seville
  171. computer accuracy
  172. Do I have to use a new A/C comp. or can I use a reman?
  173. 4.5 intake gasket replacement
  174. Life expectancy for 4.9 and 4T60E
  175. plug stuck in head
  176. Aluminum Heads?
  177. 2002 DeVille DTS maintenance
  178. ignition problems..
  179. Not a new problem
  180. I have a question, someone please explain.
  181. 91 Sedan Deville Gas Mileage ...
  182. 1990 deville hesitates
  183. Great, now I have MORE trouble codes!! E91 and E98
  184. 1994 Sedan deville 4.9L Stalls/dies well driving
  185. PCM Programming for 4.5L V8?
  186. Trouble Code E48 "EGR System Problem"....what exactly is it.
  187. 223-232f
  188. Trying to beat the heat....
  189. STP Fuel Injector Cleaner--it works!
  190. A starting we will go...
  191. 1990 deville 4.5 trouble code air management fault?
  192. 88 deville broke down need help
  193. ? easy way to remove 4.9 @ self serv yard?
  194. Sound like the egr to you guys?
  195. Trouble clearing codes
  196. 4.9 Bearing Thump--Who's Got It?
  197. When to replace O2 sensor?
  198. '92 deVille..surging, stuttering, stalling???
  199. 91 deville fuel injectors......
  200. motor rattle
  201. My car's 'puter done gone got brokeded (92 Eldo 4.9)
  202. 92 deville egr tubes ??
  203. 92' Deville Alternator/power Problem
  204. Changing TPS on 1993 Eldo 4.9
  205. O2S Help Please!
  206. Dead Cylinder - OH NOOOOOO!!!!
  207. A/C Hose Insulation Source
  208. Want your ISC problems solved? Look here...
  209. hmm, how do I get to that A/C compressor clutch?
  210. STOP ENGINE TEMP light problem.
  211. Brake light problem.
  212. Charge Battery Light On (No Codes) !!
  213. A Little help guys, please
  214. Green plug?
  215. How to check timing on an '85 Seville?
  216. No fuel pressure when ignition on, engine off
  217. 90 deville backfiring and running rough?
  218. 4.9 Eldorado Plugs/Wires install question
  219. Accel Wires
  220. Simple question
  221. 87 SDV E30 code
  222. 90 deville misfire
  223. Electrical problem + codes
  224. bad coolant leak: deville 4.5
  225. 1990 fleetwood won't run right - help
  226. 91 Deville 4.9 misses when hot outside
  227. 92 Deville throwing MAP codes, heats up and conks out.
  228. Cooling fans/AC problem
  229. Mufflers Bottom Line?
  230. 1993 Seville w/ 4.9L P041 Code
  231. HT4900 (4.9) Exhaust Manifold Interchangeability
  232. 94 Deville, odd noise and stalling now. Pics attached.
  233. Coolant Leak
  234. bad coolant leak: deville 4.5
  235. hesitation and backfire 4100
  236. 90 Coupe Deville engine problems
  237. 1990 deville hard stall on idle
  238. Cone Filter & Cold Air Intake
  239. Rough runing, missing?
  240. isc/driveability
  241. spudder of some sort
  242. 91 4.9 Runs Rich and Gas Mileage Question
  243. Hey Guys, Long time no chat, and need some input on a non input vss signal. Blew.....
  244. OLDS 350 swap
  245. 1984 eldo some new problems
  246. 4.9 EGR Removal???
  247. Recommended Spark Plugs
  248. 4.9 Running Rough...
  249. problem solved
  250. Changing Oil To Synthetic?