: HT4100 4.1, 4.5, 4.9



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