: HT4100 4.1, 4.5, 4.9



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