: HT4100 4.1, 4.5, 4.9



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