: HT4100 4.1, 4.5, 4.9



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  1. Professional injector cleaning?
  2. Is my fuel pressure low???? 93 Deville
  3. E62 Cruise control vacum solenoid error code
  4. I am going to make a cut out
  5. Problem adding a cutout to '90 Seville exhaust system,
  6. Flawed logic or a..
  7. transmission bolt up from 4.5L to 4.1L HT4100
  8. Does Anyone Have A Step By Step Guide To Adjusting The Tps?
  9. All Show And No Go
  10. Coolant issues must be contagious
  11. Coolant gushed out on highway, engine rattles
  12. Yet another exhaust theory question.
  13. 4.5 sounds real good with no cat
  14. Oil Pan Drain Plug Spins
  15. 87 Seville...Engine problems, knocking, overheating,do I shoot it?
  16. Can I use a regular fuel filter?
  17. Where is the fuel filter?
  18. RWD tranny for 4.9L??
  19. please help!!!!!!!
  20. Did I go overboard?
  21. Fuel: Maladies, Mayhem...Mileage!
  22. Errr... Map/Baro code. No clue what to do.
  23. Can a CS144 generator on a 4.9L be opened?
  24. Newbie here with a stall problem!
  25. The tricky TV cable...
  26. Now its knocking and oil light is on!!!
  27. Uh oh! I think my waterpump finally went!
  28. Accursed Ignition Timing...
  29. Whats makes one of your throtte blades wires Loose on one of the throttle blades
  30. How to gut a cat?
  31. Cooling Fans
  32. 90 Seville.. obd codes beginning with R??
  33. Sometimes she idles at 600-625... sometimes 900
  34. Oxygen sensor cured startup WOT
  35. Transmission rough downshifting to 1st
  36. Power Steering Leak...
  37. Tranny problem on an 89 eldo!
  38. If you need scans of service manual.. 1990 Cadillac
  39. This poor ol' car has been so abused.
  40. ****!!!! Flat Cam Now!!!!!!
  41. E53 - Distributor Signal Interrupt
  42. help
  43. HT-4100 modified for flex-fuel?
  44. 94 problem
  45. 4100 Engine Modified for Flex-Fuel?
  46. How important is the PCV?
  47. Replace the alternator or don't do it?
  48. 82 Hearse Hard Starting Cold - Codes
  49. Slight tick at idle, '92 Sedan deVille.
  50. Coolant Hell (and *gulp* headgasket?)
  51. Inconsistent loud bang from under hood
  52. mmmm Swisschesse.......ed the airbox :).
  53. Info on fuel injectors
  54. God No!!!!!!
  55. Reduced EGR flow - Detonation
  56. Fuel Pressure Inquiries
  57. My 4100 will not go past 50mph
  58. How come my motor goes full throttle on startup?
  59. Why are 4.x lifters noisy?
  60. 4.5 TBI vs 4.1 TBI
  61. power steering pump
  62. 93 Deville Loss of Power getting 6-7 MPG !!!
  63. Need Help Bad!
  64. 4.9 Exhaust
  65. 83 Eldorado swapping 4100 motors
  66. Wikipedia contradicted what I thought I knew
  67. I bought another HT4100 - a hearse
  68. Striped 4.9 Head Bolts Please Help
  69. Quick alternator question
  70. Please help! #1 service main part#?? 4.9 3545718 no good according to Cadillac?
  71. changing the distributer cap and rotor on a 91 deville 4.9
  72. Kill Switch - 1990 Cadillac DeVille
  73. Advice! My idle has gone nuts!
  74. SeaFoam Method
  75. Need Throttle Body Help!
  76. Shorted Mat sensor signal, E37.
  77. rhoads lifters?
  78. Say I buy a new 4.5 and transmission.. give me a rundown of wht it takes to put it in
  79. YES!!! It RUNS!!!!!
  80. Plugs and wires..
  81. Shadetree hall of shame.. I did something STUPID
  82. 4.9 Cracked Block Leaking Coolant
  83. How bad is this on the transmission...
  84. Rattling...
  85. Questions about replacing 4.5 motor/tranny
  86. 4.9 is running niiiiiiiiice.....
  87. Questions on ISC
  88. 4100 Timing Advance question.
  89. what causes an e55?
  90. 92 deville 4.9 timing cover question
  91. Why Does ?
  92. Fuel Injector Selection
  93. No overdrive
  94. Wobbly pulley
  95. 4.1 spark plug ????
  96. How much does 4.1 engine weigh??
  97. 1990 Cadillac Sedan DeVille
  98. Here is a video of the 86 fleetwood.
  99. Who's 4100 sounds like this?
  100. What is the BEST MOTOR FLUSH out there?
  101. Collapsed lifter!
  102. MAT sensor?
  103. Engine cradle bolts?
  104. Cam shaft test?...
  105. Can't get these bolts off...
  106. GM top end cleaner or seafoam..
  107. I broke my motor
  108. What causes a f48 code?
  109. Need to know ?
  110. GM Too Expensive Cleaner...
  111. oil problem
  112. I Am A Retard
  113. Engine Miss, (electronic not mechanical)
  114. Help with Plug Wires and a few other items on 4.9L 93 SDV
  115. 1985 4.1 Help
  116. 93' 4.9 Eldorado Heating
  117. Factory 4.x alternator
  118. Back firing/stalling/knocking HT-4100
  119. 88 deville tech question?
  120. Engine Upgrade?
  121. Little help with throttle issue...
  122. Custom Exhaust Manifolds and down pipe... for the 4.9
  123. 4.9 or 4.6
  124. FWD 86 Fleetwood For Sale.
  125. whats the diffrence?
  126. Help with cold stalling problem
  127. Misfire and absent fuel
  128. Timing 4.1L How to loosen dist???
  129. Tranny fluid frustration
  130. rough idle and bad miss
  131. Engine paranoia
  132. What are the pro's and con's of upgradeing your ignition system on a 4.9?
  133. remove fuel rail to change fpr on 4.9
  134. EGR Valve Location
  135. A question of exhaust theory...
  136. ecm data
  137. Fuel Injector Ripoff...
  138. Diagnostic code ?/EGR Valve
  139. '85 Deville, HT4100, considerable problems running properly...seeking help
  140. Looking For More Power From My 4.1
  141. Serpentine Belt Diagram 4100
  142. OBDI vs OBDII; AC compressor
  143. idle problem
  144. 4.9 distributor bushing wear
  145. What should I do to fix my bad gas mialage (really bad)
  146. Does the fpr have to leak to be bad?
  147. What is this sensor on the back of my 4.9 motor?
  148. Need help on alighning PRNDL switch.
  149. P/N for gaskets
  150. 88 Eldorado wont start
  151. prndl code
  152. E046 message
  153. PCV pipe???
  154. 10 mpg city and its not even like a city.Can it be my fpr.
  155. car throwing codes, decypher them please :D
  156. Fuel Pressure 92 Deville
  157. performance ??? ht4100
  158. ht4100 ?????
  159. Breather on 4T60E, is there and if so where is it?
  160. 1990 deville low reading
  161. 1990 deville vacuum
  162. Throttle body gasket?
  163. 90 Deville ignition wire, cap, rotor
  164. 91 deville stumbles after warming up
  165. 83 cadillac 4.1
  166. Timing Chain
  167. Discussion about caddeville's project (split from 4.9 into 88 Eldorado)
  168. Why Wont It Start?!!!
  169. 4.9 into 88 eldorado
  170. 83'Eldorado 2 camshafts later and it wont start
  171. Northern Indiana Users?
  172. engine ping,
  173. Speed limiter...
  174. Octane and fuel prices vs performance
  175. Any fresh tips for re-manufactured 4100 seeker?
  176. 4.5 wont start after head gaskets
  177. Advancing timing, need help...
  178. Whistling Sound
  179. Comparing Dexcool and green stuff
  180. My Fuel Injectors :(
  181. Sonofabitch !!!!!!
  182. 4100 emmissions air pump
  183. 1990 deville help
  184. Power improvement... from a carburator?
  185. Sad Caddy's in the background.
  186. Water Pump for 89 DeVille
  187. Heatsoak and Starters. Is this a Caddy problem too or just Cadero's.
  188. ISC motor problem? '94 Deville
  189. 88 DeVille Serpentine Belt
  190. Noise in Transmission?
  191. Coolant Leak - How to find?
  192. Good care (ATF) for 4T60E
  193. 1994 Deville 4.9 fuel pressure
  194. Please help an old man. (Backfiring voodoo fleetwood)
  195. Please Help! 4.9 won't shift out of second gear.
  196. Tranny problems engaging
  197. 89 deville 4.5 tranny in 93 seville 4.9 will it work?
  198. Need help asap.I have a draeded p093, is my trans gone?
  199. Some people just don't want to listen
  200. 92 Deville Rough Idle Periodic Stallin
  201. (3 4.9 bad mpg.Can low ac refrigerint cause this?
  202. Need a good write up for cleaning Tb and EGR valve please (4.9)
  203. WOT with a high mileage 4.9?
  204. Is my transmission fluid ok or do I need to change it out?
  205. 4T60E transmission problem??
  206. Messed up my transmission
  207. Simple question, what does the HT stand for
  208. Emmissions Testing and the 4.9 and BC Canada guys in here
  209. Knocking
  210. Knock sensor on HT4100?
  211. Cold air zapping coil!
  212. Error code 29
  213. Replaced everything...stumble is worse.
  214. 1984 Eldo 4.1 Engine Color Needed
  215. frontend noise
  216. Fastchip - Does it work?
  217. Does everyone have mandrel-bent piping?
  218. What is the Factory Timing for a 93 Eldorado
  219. I want a DIC (get your mind out of the gutter) :D
  220. 4.9 in Brougham??
  221. engine change
  222. Ram Air/Cold air intake for 4.9?
  223. Underdrive pulleys?
  224. Braking Engine Jump... 1990 DeVille
  225. engine miss 4.5 ???
  226. '90 DeVille ISC motor problem SOLVED
  227. 94 Deville misses backfires & DIES! whats wrong
  228. Fuel injector problem?
  229. Can't get my 4.9 to Adjust timing
  230. Valve Lash Adjustment
  231. 95 4.9 flywheel breakage?
  232. Fuel Pump Relay
  233. Not getting enough spark
  234. Not again!!
  235. Oxygen Sensor
  236. 4.9L Fuel Economy
  237. HT 4100 - Success stories
  238. Gurgling Sound In Engine?
  239. Second generation HT4100
  240. 1984 Fleetwood Code 52 ECM memory reset problem
  241. 84 Eldorado No Start
  242. engine rev's and dies
  243. Engine revs when I turn the wheel????????
  244. throddle control
  245. something happened today with the 90 deville and i don't know what
  246. unique problem 4.9
  247. Stoneys Main Bearing Diary
  248. nees help fast please
  249. 4.9 timing is hard! Idles rough, stumble on acceleration
  250. Water Pump Leakage!!!