: HT4100 4.1, 4.5, 4.9



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