: HT4100 4.1, 4.5, 4.9



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  1. Did I go overboard?
  2. Fuel: Maladies, Mayhem...Mileage!
  3. Errr... Map/Baro code. No clue what to do.
  4. Can a CS144 generator on a 4.9L be opened?
  5. Newbie here with a stall problem!
  6. The tricky TV cable...
  7. Now its knocking and oil light is on!!!
  8. Uh oh! I think my waterpump finally went!
  9. Accursed Ignition Timing...
  10. Whats makes one of your throtte blades wires Loose on one of the throttle blades
  11. How to gut a cat?
  12. Cooling Fans
  13. 90 Seville.. obd codes beginning with R??
  14. Sometimes she idles at 600-625... sometimes 900
  15. Oxygen sensor cured startup WOT
  16. Transmission rough downshifting to 1st
  17. Power Steering Leak...
  18. Tranny problem on an 89 eldo!
  19. If you need scans of service manual.. 1990 Cadillac
  20. This poor ol' car has been so abused.
  21. ****!!!! Flat Cam Now!!!!!!
  22. E53 - Distributor Signal Interrupt
  23. help
  24. HT-4100 modified for flex-fuel?
  25. 94 problem
  26. 4100 Engine Modified for Flex-Fuel?
  27. How important is the PCV?
  28. Replace the alternator or don't do it?
  29. 82 Hearse Hard Starting Cold - Codes
  30. Slight tick at idle, '92 Sedan deVille.
  31. Coolant Hell (and *gulp* headgasket?)
  32. Inconsistent loud bang from under hood
  33. mmmm Swisschesse.......ed the airbox :).
  34. Info on fuel injectors
  35. God No!!!!!!
  36. Reduced EGR flow - Detonation
  37. Fuel Pressure Inquiries
  38. My 4100 will not go past 50mph
  39. How come my motor goes full throttle on startup?
  40. Why are 4.x lifters noisy?
  41. 4.5 TBI vs 4.1 TBI
  42. power steering pump
  43. 93 Deville Loss of Power getting 6-7 MPG !!!
  44. Need Help Bad!
  45. 4.9 Exhaust
  46. 83 Eldorado swapping 4100 motors
  47. Wikipedia contradicted what I thought I knew
  48. I bought another HT4100 - a hearse
  49. Striped 4.9 Head Bolts Please Help
  50. Quick alternator question
  51. Please help! #1 service main part#?? 4.9 3545718 no good according to Cadillac?
  52. changing the distributer cap and rotor on a 91 deville 4.9
  53. Kill Switch - 1990 Cadillac DeVille
  54. Advice! My idle has gone nuts!
  55. SeaFoam Method
  56. Need Throttle Body Help!
  57. Shorted Mat sensor signal, E37.
  58. rhoads lifters?
  59. Say I buy a new 4.5 and transmission.. give me a rundown of wht it takes to put it in
  60. YES!!! It RUNS!!!!!
  61. Plugs and wires..
  62. Shadetree hall of shame.. I did something STUPID
  63. 4.9 Cracked Block Leaking Coolant
  64. How bad is this on the transmission...
  65. Rattling...
  66. Questions about replacing 4.5 motor/tranny
  67. 4.9 is running niiiiiiiiice.....
  68. Questions on ISC
  69. 4100 Timing Advance question.
  70. what causes an e55?
  71. 92 deville 4.9 timing cover question
  72. Why Does ?
  73. Fuel Injector Selection
  74. No overdrive
  75. Wobbly pulley
  76. 4.1 spark plug ????
  77. How much does 4.1 engine weigh??
  78. 1990 Cadillac Sedan DeVille
  79. Here is a video of the 86 fleetwood.
  80. Who's 4100 sounds like this?
  81. What is the BEST MOTOR FLUSH out there?
  82. Collapsed lifter!
  83. MAT sensor?
  84. Engine cradle bolts?
  85. Cam shaft test?...
  86. Can't get these bolts off...
  87. GM top end cleaner or seafoam..
  88. I broke my motor
  89. What causes a f48 code?
  90. Need to know ?
  91. GM Too Expensive Cleaner...
  92. oil problem
  93. I Am A Retard
  94. Engine Miss, (electronic not mechanical)
  95. Help with Plug Wires and a few other items on 4.9L 93 SDV
  96. 1985 4.1 Help
  97. 93' 4.9 Eldorado Heating
  98. Factory 4.x alternator
  99. Back firing/stalling/knocking HT-4100
  100. 88 deville tech question?
  101. Engine Upgrade?
  102. Little help with throttle issue...
  103. Custom Exhaust Manifolds and down pipe... for the 4.9
  104. 4.9 or 4.6
  105. FWD 86 Fleetwood For Sale.
  106. whats the diffrence?
  107. Help with cold stalling problem
  108. Misfire and absent fuel
  109. Timing 4.1L How to loosen dist???
  110. Tranny fluid frustration
  111. rough idle and bad miss
  112. Engine paranoia
  113. What are the pro's and con's of upgradeing your ignition system on a 4.9?
  114. remove fuel rail to change fpr on 4.9
  115. EGR Valve Location
  116. A question of exhaust theory...
  117. ecm data
  118. Fuel Injector Ripoff...
  119. Diagnostic code ?/EGR Valve
  120. '85 Deville, HT4100, considerable problems running properly...seeking help
  121. Looking For More Power From My 4.1
  122. Serpentine Belt Diagram 4100
  123. OBDI vs OBDII; AC compressor
  124. idle problem
  125. 4.9 distributor bushing wear
  126. What should I do to fix my bad gas mialage (really bad)
  127. Does the fpr have to leak to be bad?
  128. What is this sensor on the back of my 4.9 motor?
  129. Need help on alighning PRNDL switch.
  130. P/N for gaskets
  131. 88 Eldorado wont start
  132. prndl code
  133. E046 message
  134. PCV pipe???
  135. 10 mpg city and its not even like a city.Can it be my fpr.
  136. car throwing codes, decypher them please :D
  137. Fuel Pressure 92 Deville
  138. performance ??? ht4100
  139. ht4100 ?????
  140. Breather on 4T60E, is there and if so where is it?
  141. 1990 deville low reading
  142. 1990 deville vacuum
  143. Throttle body gasket?
  144. 90 Deville ignition wire, cap, rotor
  145. 91 deville stumbles after warming up
  146. 83 cadillac 4.1
  147. Timing Chain
  148. Discussion about caddeville's project (split from 4.9 into 88 Eldorado)
  149. Why Wont It Start?!!!
  150. 4.9 into 88 eldorado
  151. 83'Eldorado 2 camshafts later and it wont start
  152. Northern Indiana Users?
  153. engine ping,
  154. Speed limiter...
  155. Octane and fuel prices vs performance
  156. Any fresh tips for re-manufactured 4100 seeker?
  157. 4.5 wont start after head gaskets
  158. Advancing timing, need help...
  159. Whistling Sound
  160. Comparing Dexcool and green stuff
  161. My Fuel Injectors :(
  162. Sonofabitch !!!!!!
  163. 4100 emmissions air pump
  164. 1990 deville help
  165. Power improvement... from a carburator?
  166. Sad Caddy's in the background.
  167. Water Pump for 89 DeVille
  168. Heatsoak and Starters. Is this a Caddy problem too or just Cadero's.
  169. ISC motor problem? '94 Deville
  170. 88 DeVille Serpentine Belt
  171. Noise in Transmission?
  172. Coolant Leak - How to find?
  173. Good care (ATF) for 4T60E
  174. 1994 Deville 4.9 fuel pressure
  175. Please help an old man. (Backfiring voodoo fleetwood)
  176. Please Help! 4.9 won't shift out of second gear.
  177. Tranny problems engaging
  178. 89 deville 4.5 tranny in 93 seville 4.9 will it work?
  179. Need help asap.I have a draeded p093, is my trans gone?
  180. Some people just don't want to listen
  181. 92 Deville Rough Idle Periodic Stallin
  182. (3 4.9 bad mpg.Can low ac refrigerint cause this?
  183. Need a good write up for cleaning Tb and EGR valve please (4.9)
  184. WOT with a high mileage 4.9?
  185. Is my transmission fluid ok or do I need to change it out?
  186. 4T60E transmission problem??
  187. Messed up my transmission
  188. Simple question, what does the HT stand for
  189. Emmissions Testing and the 4.9 and BC Canada guys in here
  190. Knocking
  191. Knock sensor on HT4100?
  192. Cold air zapping coil!
  193. Error code 29
  194. Replaced everything...stumble is worse.
  195. 1984 Eldo 4.1 Engine Color Needed
  196. frontend noise
  197. Fastchip - Does it work?
  198. Does everyone have mandrel-bent piping?
  199. What is the Factory Timing for a 93 Eldorado
  200. I want a DIC (get your mind out of the gutter) :D
  201. 4.9 in Brougham??
  202. engine change
  203. Ram Air/Cold air intake for 4.9?
  204. Underdrive pulleys?
  205. Braking Engine Jump... 1990 DeVille
  206. engine miss 4.5 ???
  207. '90 DeVille ISC motor problem SOLVED
  208. 94 Deville misses backfires & DIES! whats wrong
  209. Fuel injector problem?
  210. Can't get my 4.9 to Adjust timing
  211. Valve Lash Adjustment
  212. 95 4.9 flywheel breakage?
  213. Fuel Pump Relay
  214. Not getting enough spark
  215. Not again!!
  216. Oxygen Sensor
  217. 4.9L Fuel Economy
  218. HT 4100 - Success stories
  219. Gurgling Sound In Engine?
  220. Second generation HT4100
  221. 1984 Fleetwood Code 52 ECM memory reset problem
  222. 84 Eldorado No Start
  223. engine rev's and dies
  224. Engine revs when I turn the wheel????????
  225. throddle control
  226. something happened today with the 90 deville and i don't know what
  227. unique problem 4.9
  228. Stoneys Main Bearing Diary
  229. nees help fast please
  230. 4.9 timing is hard! Idles rough, stumble on acceleration
  231. Water Pump Leakage!!!
  232. Min air ????
  233. Help with a water pump installation!!
  234. How to replace water pump on 92 seville?
  235. Another TPS ?????
  236. 87 Deville 4.1- No fuel!!!!!
  237. horsepower for 4.9
  238. A question for the gurus
  239. Trans cooler leak!
  240. 1990 Cadillac Sedan Deville high idle
  241. new oils verses old oils
  242. Minimum IDLE SCREW adjustment
  243. Oil cooler line o-ring
  244. Is my ISC motor shot? ('90 4.5L)
  245. Help with identifying a GM Goodwrench replacement block.
  246. Where is the MAP sensor located ???? 84 Seville
  247. 89 Deville engine pinging under load when warm
  248. new isc and tps
  249. Code Triggered: E66
  250. Low oil pressure at idle