: HT4100 4.1, 4.5, 4.9



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