: HT4100 4.1, 4.5, 4.9



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