: HT4100 4.1, 4.5, 4.9



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  1. 4100 transmission
  2. Coolant System
  3. ECM says my MAT sensor is bad.
  4. Adjusting the timing
  5. PCM codes
  6. Deisel noise around 2000 rpm's
  7. Still having problems on 93 sedandeville
  8. Now im getting worried!
  9. 4100 Flowmaster 80 series VIDEOS
  10. First Car, 4.9 Eldorado. Performance Upgrades HELP? (car-noob)
  11. Cold Air Intake?
  12. 4.1 codes
  13. Helicoil vs Timesert on non N* (4.1, 4.5, 4.9)
  14. Cadillac 4.9 Head Gasket Photos
  15. Where to get Exhaust Manifold Studs
  16. Do your own oil changes.
  17. Ping Ping Go Away!!!
  18. F48
  19. 1985 Seville 4100
  20. Running fuel injector cleaner through your gas tank
  21. Cleaning the throttle body plates!
  22. Post your average MPG
  23. 1984 Throttle body need help, please.
  24. Why is my caddy over heating ?
  25. Poor mpg on 93 sedandeville
  26. Squeeking Noise!
  27. Rwd/fwd Ht4100
  28. TRANS ID'ing
  29. HT4100 Check In
  30. 15W40 delco with GM oil supplement
  31. Performance transmission rebuild...
  32. 4.5 L tranny bolt pattern
  33. isc motor re-learn
  34. 4.9 Extremely rough running issue
  35. Stripped Head Bolt Hole Where Do I Get Helicoil?
  36. engine swap 4100 to 305 chevy
  37. 1984 Cadillac - 4100 firing order and distributor rotation
  38. '92 Eldo Problems
  39. overheating, now power, 83 coupe deville ht4100
  40. Whats the brown stuff on my valves?
  41. Doing My 4.9 Head Gasket Looking for Advice on Parts
  42. ecm replacement
  43. Recommended sealant for water pump gasket on 91 deville
  44. What do i coat the head bolts with?
  45. Bad Map on 91 Deville?
  46. 4.9 or northstar?? which has less problems??
  47. Amsoil test results
  48. 91 Seville Overheat
  49. Are Head Bolts T.t.y Or Not (conflicting Answers)???????
  50. Iron heads
  51. ??? ???E30 isc code??? ???
  52. Got rusty tubes?
  53. Squealing under hood when cold
  54. What is this?????
  55. Noise at EGR conditions
  56. '90 DeVille has high NOX at low speed, failed smog. Some help needed.
  57. exhaust ideas
  58. 1990 fleetwood won't run right - help
  59. 89 deville stumble/miss on acceleration
  60. Diagnostic Mode
  61. Curious Fuel Pump Behavior
  62. Cooling fan fault
  63. High Idle. ISC? Need Advice!!!!
  64. 92 STS Engine Trouble
  65. head gasket, intake gasket or what?
  66. Engine RPM.... is this normal?
  67. 91 Eldorado No Crank B334 code system problem
  68. E67!!!!!! how do i fix
  69. Video of my 4.9 5spd in Action.
  70. broke water pump on my 88!
  71. In search of a new/rebuilt vacuum pump...
  72. Help with the codes please!!
  73. Digital Fuel Injection vs Crossfire Injection
  74. Im Having Problems With My 86 Cadillac
  75. Rust in my cooling system, PLEASE HELP!
  76. 3/8"-ish metal line off of throttle body runs where... ..?
  77. 1990 sedan deville isc crap =(
  78. 5 liter fuel injectors in a 4.9 project!
  79. Cylinder Pressure Test Question???????
  80. Trans Problem?
  81. I need a quick answer
  82. ISC Motor question
  83. Question on use of Rotella 15W-40
  84. 82 HT4100 Hearse Fuel System Codes
  85. Is my EGR valave toast?
  86. just died
  87. Newbie 4100 owner advice
  88. Cleaning under hood - recommendations?
  89. It WON'T slow down...
  90. Spark plugs and spark knock
  91. Where is the control valve assembly for the transmission??
  92. Does the ISC motor affect the tranny shifting/downshifting???
  93. Ethanol in your Caddy....?!
  94. Any Ideas? 93 Deville Stalling
  95. Camshaft position sensor
  96. What's wrong with the tranny?
  97. 1990 Sedan Deville - Any Help is Appreciated
  98. Changing Water Pump on 95 Deville
  99. engine ping
  100. hesitation,back fire and bad Idle 4.9
  101. 4.9 performance exhaust
  102. Any Neat Tricks Replacing Lh Head Gasket???
  103. real cold air intake(no short ram)4.9
  104. Throttle Body 1984 HT4100
  105. 4.9 exploding mufflers
  106. Northstar engine builders in So Cal?
  107. A/C Compressor Only Works at High RPM?
  108. How often do you have to calibrate your TPS?
  109. Its not the fuel pump.
  110. Swapping 4.9 to 4.6N*
  111. 4100 coolant loss #3 cylinder
  112. will 4.5L heads bolt up to a 4.1L
  113. Engine Miss...driving me mad...
  114. Compression ratios?
  115. They see me coming OR So they think
  116. They see me coming OR So they think
  117. exhaust leak
  118. Changing Thermostat on 88 Coupe Deville
  119. HT4100 flooding out badly. Code 15,20,52 ?
  120. GM Top Engine Cleaner
  121. Coolant temp gets up around 230 some times
  122. Toasted fuel pump?
  123. What is that tube for?
  124. Finally bought some things for the car !
  125. 4.9L What the Hell is this? ...
  126. Is this converter alright?
  127. Professional injector cleaning?
  128. Is my fuel pressure low???? 93 Deville
  129. E62 Cruise control vacum solenoid error code
  130. I am going to make a cut out
  131. Problem adding a cutout to '90 Seville exhaust system,
  132. Flawed logic or a..
  133. transmission bolt up from 4.5L to 4.1L HT4100
  134. Does Anyone Have A Step By Step Guide To Adjusting The Tps?
  135. All Show And No Go
  136. Coolant issues must be contagious
  137. Coolant gushed out on highway, engine rattles
  138. Yet another exhaust theory question.
  139. 4.5 sounds real good with no cat
  140. Oil Pan Drain Plug Spins
  141. 87 Seville...Engine problems, knocking, overheating,do I shoot it?
  142. Can I use a regular fuel filter?
  143. Where is the fuel filter?
  144. RWD tranny for 4.9L??
  145. please help!!!!!!!
  146. Did I go overboard?
  147. Fuel: Maladies, Mayhem...Mileage!
  148. Errr... Map/Baro code. No clue what to do.
  149. Can a CS144 generator on a 4.9L be opened?
  150. Newbie here with a stall problem!
  151. The tricky TV cable...
  152. Now its knocking and oil light is on!!!
  153. Uh oh! I think my waterpump finally went!
  154. Accursed Ignition Timing...
  155. Whats makes one of your throtte blades wires Loose on one of the throttle blades
  156. How to gut a cat?
  157. Cooling Fans
  158. 90 Seville.. obd codes beginning with R??
  159. Sometimes she idles at 600-625... sometimes 900
  160. Oxygen sensor cured startup WOT
  161. Transmission rough downshifting to 1st
  162. Power Steering Leak...
  163. Tranny problem on an 89 eldo!
  164. If you need scans of service manual.. 1990 Cadillac
  165. This poor ol' car has been so abused.
  166. ****!!!! Flat Cam Now!!!!!!
  167. E53 - Distributor Signal Interrupt
  168. help
  169. HT-4100 modified for flex-fuel?
  170. 94 problem
  171. 4100 Engine Modified for Flex-Fuel?
  172. How important is the PCV?
  173. Replace the alternator or don't do it?
  174. 82 Hearse Hard Starting Cold - Codes
  175. Slight tick at idle, '92 Sedan deVille.
  176. Coolant Hell (and *gulp* headgasket?)
  177. Inconsistent loud bang from under hood
  178. mmmm Swisschesse.......ed the airbox :).
  179. Info on fuel injectors
  180. God No!!!!!!
  181. Reduced EGR flow - Detonation
  182. Fuel Pressure Inquiries
  183. My 4100 will not go past 50mph
  184. How come my motor goes full throttle on startup?
  185. Why are 4.x lifters noisy?
  186. 4.5 TBI vs 4.1 TBI
  187. power steering pump
  188. 93 Deville Loss of Power getting 6-7 MPG !!!
  189. Need Help Bad!
  190. 4.9 Exhaust
  191. 83 Eldorado swapping 4100 motors
  192. Wikipedia contradicted what I thought I knew
  193. I bought another HT4100 - a hearse
  194. Striped 4.9 Head Bolts Please Help
  195. Quick alternator question
  196. Please help! #1 service main part#?? 4.9 3545718 no good according to Cadillac?
  197. changing the distributer cap and rotor on a 91 deville 4.9
  198. Kill Switch - 1990 Cadillac DeVille
  199. Advice! My idle has gone nuts!
  200. SeaFoam Method
  201. Need Throttle Body Help!
  202. Shorted Mat sensor signal, E37.
  203. rhoads lifters?
  204. Say I buy a new 4.5 and transmission.. give me a rundown of wht it takes to put it in
  205. YES!!! It RUNS!!!!!
  206. Plugs and wires..
  207. Shadetree hall of shame.. I did something STUPID
  208. 4.9 Cracked Block Leaking Coolant
  209. How bad is this on the transmission...
  210. Rattling...
  211. Questions about replacing 4.5 motor/tranny
  212. 4.9 is running niiiiiiiiice.....
  213. Questions on ISC
  214. 4100 Timing Advance question.
  215. what causes an e55?
  216. 92 deville 4.9 timing cover question
  217. Why Does ?
  218. Fuel Injector Selection
  219. No overdrive
  220. Wobbly pulley
  221. 4.1 spark plug ????
  222. How much does 4.1 engine weigh??
  223. 1990 Cadillac Sedan DeVille
  224. Here is a video of the 86 fleetwood.
  225. Who's 4100 sounds like this?
  226. What is the BEST MOTOR FLUSH out there?
  227. Collapsed lifter!
  228. MAT sensor?
  229. Engine cradle bolts?
  230. Cam shaft test?...
  231. Can't get these bolts off...
  232. GM top end cleaner or seafoam..
  233. I broke my motor
  234. What causes a f48 code?
  235. Need to know ?
  236. GM Too Expensive Cleaner...
  237. oil problem
  238. I Am A Retard
  239. Engine Miss, (electronic not mechanical)
  240. Help with Plug Wires and a few other items on 4.9L 93 SDV
  241. 1985 4.1 Help
  242. 93' 4.9 Eldorado Heating
  243. Factory 4.x alternator
  244. Back firing/stalling/knocking HT-4100
  245. 88 deville tech question?
  246. Engine Upgrade?
  247. Little help with throttle issue...
  248. Custom Exhaust Manifolds and down pipe... for the 4.9
  249. 4.9 or 4.6
  250. FWD 86 Fleetwood For Sale.