: HT4100 4.1, 4.5, 4.9



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  1. head gasket, intake gasket or what?
  2. Engine RPM.... is this normal?
  3. 91 Eldorado No Crank B334 code system problem
  4. E67!!!!!! how do i fix
  5. Video of my 4.9 5spd in Action.
  6. broke water pump on my 88!
  7. In search of a new/rebuilt vacuum pump...
  8. Help with the codes please!!
  9. Digital Fuel Injection vs Crossfire Injection
  10. Im Having Problems With My 86 Cadillac
  11. Rust in my cooling system, PLEASE HELP!
  12. 3/8"-ish metal line off of throttle body runs where... ..?
  13. 1990 sedan deville isc crap =(
  14. 5 liter fuel injectors in a 4.9 project!
  15. Cylinder Pressure Test Question???????
  16. Trans Problem?
  17. I need a quick answer
  18. ISC Motor question
  19. Question on use of Rotella 15W-40
  20. 82 HT4100 Hearse Fuel System Codes
  21. Is my EGR valave toast?
  22. just died
  23. Newbie 4100 owner advice
  24. Cleaning under hood - recommendations?
  25. It WON'T slow down...
  26. Spark plugs and spark knock
  27. Where is the control valve assembly for the transmission??
  28. Does the ISC motor affect the tranny shifting/downshifting???
  29. Ethanol in your Caddy....?!
  30. Any Ideas? 93 Deville Stalling
  31. Camshaft position sensor
  32. What's wrong with the tranny?
  33. 1990 Sedan Deville - Any Help is Appreciated
  34. Changing Water Pump on 95 Deville
  35. engine ping
  36. hesitation,back fire and bad Idle 4.9
  37. 4.9 performance exhaust
  38. Any Neat Tricks Replacing Lh Head Gasket???
  39. real cold air intake(no short ram)4.9
  40. Throttle Body 1984 HT4100
  41. 4.9 exploding mufflers
  42. Northstar engine builders in So Cal?
  43. A/C Compressor Only Works at High RPM?
  44. How often do you have to calibrate your TPS?
  45. Its not the fuel pump.
  46. Swapping 4.9 to 4.6N*
  47. 4100 coolant loss #3 cylinder
  48. will 4.5L heads bolt up to a 4.1L
  49. Engine Miss...driving me mad...
  50. Compression ratios?
  51. They see me coming OR So they think
  52. They see me coming OR So they think
  53. exhaust leak
  54. Changing Thermostat on 88 Coupe Deville
  55. HT4100 flooding out badly. Code 15,20,52 ?
  56. GM Top Engine Cleaner
  57. Coolant temp gets up around 230 some times
  58. Toasted fuel pump?
  59. What is that tube for?
  60. Finally bought some things for the car !
  61. 4.9L What the Hell is this? ...
  62. Is this converter alright?
  63. Professional injector cleaning?
  64. Is my fuel pressure low???? 93 Deville
  65. E62 Cruise control vacum solenoid error code
  66. I am going to make a cut out
  67. Problem adding a cutout to '90 Seville exhaust system,
  68. Flawed logic or a..
  69. transmission bolt up from 4.5L to 4.1L HT4100
  70. Does Anyone Have A Step By Step Guide To Adjusting The Tps?
  71. All Show And No Go
  72. Coolant issues must be contagious
  73. Coolant gushed out on highway, engine rattles
  74. Yet another exhaust theory question.
  75. 4.5 sounds real good with no cat
  76. Oil Pan Drain Plug Spins
  77. 87 Seville...Engine problems, knocking, overheating,do I shoot it?
  78. Can I use a regular fuel filter?
  79. Where is the fuel filter?
  80. RWD tranny for 4.9L??
  81. please help!!!!!!!
  82. Did I go overboard?
  83. Fuel: Maladies, Mayhem...Mileage!
  84. Errr... Map/Baro code. No clue what to do.
  85. Can a CS144 generator on a 4.9L be opened?
  86. Newbie here with a stall problem!
  87. The tricky TV cable...
  88. Now its knocking and oil light is on!!!
  89. Uh oh! I think my waterpump finally went!
  90. Accursed Ignition Timing...
  91. Whats makes one of your throtte blades wires Loose on one of the throttle blades
  92. How to gut a cat?
  93. Cooling Fans
  94. 90 Seville.. obd codes beginning with R??
  95. Sometimes she idles at 600-625... sometimes 900
  96. Oxygen sensor cured startup WOT
  97. Transmission rough downshifting to 1st
  98. Power Steering Leak...
  99. Tranny problem on an 89 eldo!
  100. If you need scans of service manual.. 1990 Cadillac
  101. This poor ol' car has been so abused.
  102. ****!!!! Flat Cam Now!!!!!!
  103. E53 - Distributor Signal Interrupt
  104. help
  105. HT-4100 modified for flex-fuel?
  106. 94 problem
  107. 4100 Engine Modified for Flex-Fuel?
  108. How important is the PCV?
  109. Replace the alternator or don't do it?
  110. 82 Hearse Hard Starting Cold - Codes
  111. Slight tick at idle, '92 Sedan deVille.
  112. Coolant Hell (and *gulp* headgasket?)
  113. Inconsistent loud bang from under hood
  114. mmmm Swisschesse.......ed the airbox :).
  115. Info on fuel injectors
  116. God No!!!!!!
  117. Reduced EGR flow - Detonation
  118. Fuel Pressure Inquiries
  119. My 4100 will not go past 50mph
  120. How come my motor goes full throttle on startup?
  121. Why are 4.x lifters noisy?
  122. 4.5 TBI vs 4.1 TBI
  123. power steering pump
  124. 93 Deville Loss of Power getting 6-7 MPG !!!
  125. Need Help Bad!
  126. 4.9 Exhaust
  127. 83 Eldorado swapping 4100 motors
  128. Wikipedia contradicted what I thought I knew
  129. I bought another HT4100 - a hearse
  130. Striped 4.9 Head Bolts Please Help
  131. Quick alternator question
  132. Please help! #1 service main part#?? 4.9 3545718 no good according to Cadillac?
  133. changing the distributer cap and rotor on a 91 deville 4.9
  134. Kill Switch - 1990 Cadillac DeVille
  135. Advice! My idle has gone nuts!
  136. SeaFoam Method
  137. Need Throttle Body Help!
  138. Shorted Mat sensor signal, E37.
  139. rhoads lifters?
  140. Say I buy a new 4.5 and transmission.. give me a rundown of wht it takes to put it in
  141. YES!!! It RUNS!!!!!
  142. Plugs and wires..
  143. Shadetree hall of shame.. I did something STUPID
  144. 4.9 Cracked Block Leaking Coolant
  145. How bad is this on the transmission...
  146. Rattling...
  147. Questions about replacing 4.5 motor/tranny
  148. 4.9 is running niiiiiiiiice.....
  149. Questions on ISC
  150. 4100 Timing Advance question.
  151. what causes an e55?
  152. 92 deville 4.9 timing cover question
  153. Why Does ?
  154. Fuel Injector Selection
  155. No overdrive
  156. Wobbly pulley
  157. 4.1 spark plug ????
  158. How much does 4.1 engine weigh??
  159. 1990 Cadillac Sedan DeVille
  160. Here is a video of the 86 fleetwood.
  161. Who's 4100 sounds like this?
  162. What is the BEST MOTOR FLUSH out there?
  163. Collapsed lifter!
  164. MAT sensor?
  165. Engine cradle bolts?
  166. Cam shaft test?...
  167. Can't get these bolts off...
  168. GM top end cleaner or seafoam..
  169. I broke my motor
  170. What causes a f48 code?
  171. Need to know ?
  172. GM Too Expensive Cleaner...
  173. oil problem
  174. I Am A Retard
  175. Engine Miss, (electronic not mechanical)
  176. Help with Plug Wires and a few other items on 4.9L 93 SDV
  177. 1985 4.1 Help
  178. 93' 4.9 Eldorado Heating
  179. Factory 4.x alternator
  180. Back firing/stalling/knocking HT-4100
  181. 88 deville tech question?
  182. Engine Upgrade?
  183. Little help with throttle issue...
  184. Custom Exhaust Manifolds and down pipe... for the 4.9
  185. 4.9 or 4.6
  186. FWD 86 Fleetwood For Sale.
  187. whats the diffrence?
  188. Help with cold stalling problem
  189. Misfire and absent fuel
  190. Timing 4.1L How to loosen dist???
  191. Tranny fluid frustration
  192. rough idle and bad miss
  193. Engine paranoia
  194. What are the pro's and con's of upgradeing your ignition system on a 4.9?
  195. remove fuel rail to change fpr on 4.9
  196. EGR Valve Location
  197. A question of exhaust theory...
  198. ecm data
  199. Fuel Injector Ripoff...
  200. Diagnostic code ?/EGR Valve
  201. '85 Deville, HT4100, considerable problems running properly...seeking help
  202. Looking For More Power From My 4.1
  203. Serpentine Belt Diagram 4100
  204. OBDI vs OBDII; AC compressor
  205. idle problem
  206. 4.9 distributor bushing wear
  207. What should I do to fix my bad gas mialage (really bad)
  208. Does the fpr have to leak to be bad?
  209. What is this sensor on the back of my 4.9 motor?
  210. Need help on alighning PRNDL switch.
  211. P/N for gaskets
  212. 88 Eldorado wont start
  213. prndl code
  214. E046 message
  215. PCV pipe???
  216. 10 mpg city and its not even like a city.Can it be my fpr.
  217. car throwing codes, decypher them please :D
  218. Fuel Pressure 92 Deville
  219. performance ??? ht4100
  220. ht4100 ?????
  221. Breather on 4T60E, is there and if so where is it?
  222. 1990 deville low reading
  223. 1990 deville vacuum
  224. Throttle body gasket?
  225. 90 Deville ignition wire, cap, rotor
  226. 91 deville stumbles after warming up
  227. 83 cadillac 4.1
  228. Timing Chain
  229. Discussion about caddeville's project (split from 4.9 into 88 Eldorado)
  230. Why Wont It Start?!!!
  231. 4.9 into 88 eldorado
  232. 83'Eldorado 2 camshafts later and it wont start
  233. Northern Indiana Users?
  234. engine ping,
  235. Speed limiter...
  236. Octane and fuel prices vs performance
  237. Any fresh tips for re-manufactured 4100 seeker?
  238. 4.5 wont start after head gaskets
  239. Advancing timing, need help...
  240. Whistling Sound
  241. Comparing Dexcool and green stuff
  242. My Fuel Injectors :(
  243. Sonofabitch !!!!!!
  244. 4100 emmissions air pump
  245. 1990 deville help
  246. Power improvement... from a carburator?
  247. Sad Caddy's in the background.
  248. Water Pump for 89 DeVille
  249. Heatsoak and Starters. Is this a Caddy problem too or just Cadero's.
  250. ISC motor problem? '94 Deville