: HT4100 4.1, 4.5, 4.9



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  1. '92 Eldo Problems
  2. overheating, now power, 83 coupe deville ht4100
  3. Whats the brown stuff on my valves?
  4. Doing My 4.9 Head Gasket Looking for Advice on Parts
  5. ecm replacement
  6. Recommended sealant for water pump gasket on 91 deville
  7. What do i coat the head bolts with?
  8. Bad Map on 91 Deville?
  9. 4.9 or northstar?? which has less problems??
  10. Amsoil test results
  11. 91 Seville Overheat
  12. Are Head Bolts T.t.y Or Not (conflicting Answers)???????
  13. Iron heads
  14. ??? ???E30 isc code??? ???
  15. Got rusty tubes?
  16. Squealing under hood when cold
  17. What is this?????
  18. Noise at EGR conditions
  19. '90 DeVille has high NOX at low speed, failed smog. Some help needed.
  20. exhaust ideas
  21. 1990 fleetwood won't run right - help
  22. 89 deville stumble/miss on acceleration
  23. Diagnostic Mode
  24. Curious Fuel Pump Behavior
  25. Cooling fan fault
  26. High Idle. ISC? Need Advice!!!!
  27. 92 STS Engine Trouble
  28. head gasket, intake gasket or what?
  29. Engine RPM.... is this normal?
  30. 91 Eldorado No Crank B334 code system problem
  31. E67!!!!!! how do i fix
  32. Video of my 4.9 5spd in Action.
  33. broke water pump on my 88!
  34. In search of a new/rebuilt vacuum pump...
  35. Help with the codes please!!
  36. Digital Fuel Injection vs Crossfire Injection
  37. Im Having Problems With My 86 Cadillac
  38. Rust in my cooling system, PLEASE HELP!
  39. 3/8"-ish metal line off of throttle body runs where... ..?
  40. 1990 sedan deville isc crap =(
  41. 5 liter fuel injectors in a 4.9 project!
  42. Cylinder Pressure Test Question???????
  43. Trans Problem?
  44. I need a quick answer
  45. ISC Motor question
  46. Question on use of Rotella 15W-40
  47. 82 HT4100 Hearse Fuel System Codes
  48. Is my EGR valave toast?
  49. just died
  50. Newbie 4100 owner advice
  51. Cleaning under hood - recommendations?
  52. It WON'T slow down...
  53. Spark plugs and spark knock
  54. Where is the control valve assembly for the transmission??
  55. Does the ISC motor affect the tranny shifting/downshifting???
  56. Ethanol in your Caddy....?!
  57. Any Ideas? 93 Deville Stalling
  58. Camshaft position sensor
  59. What's wrong with the tranny?
  60. 1990 Sedan Deville - Any Help is Appreciated
  61. Changing Water Pump on 95 Deville
  62. engine ping
  63. hesitation,back fire and bad Idle 4.9
  64. 4.9 performance exhaust
  65. Any Neat Tricks Replacing Lh Head Gasket???
  66. real cold air intake(no short ram)4.9
  67. Throttle Body 1984 HT4100
  68. 4.9 exploding mufflers
  69. Northstar engine builders in So Cal?
  70. A/C Compressor Only Works at High RPM?
  71. How often do you have to calibrate your TPS?
  72. Its not the fuel pump.
  73. Swapping 4.9 to 4.6N*
  74. 4100 coolant loss #3 cylinder
  75. will 4.5L heads bolt up to a 4.1L
  76. Engine Miss...driving me mad...
  77. Compression ratios?
  78. They see me coming OR So they think
  79. They see me coming OR So they think
  80. exhaust leak
  81. Changing Thermostat on 88 Coupe Deville
  82. HT4100 flooding out badly. Code 15,20,52 ?
  83. GM Top Engine Cleaner
  84. Coolant temp gets up around 230 some times
  85. Toasted fuel pump?
  86. What is that tube for?
  87. Finally bought some things for the car !
  88. 4.9L What the Hell is this? ...
  89. Is this converter alright?
  90. Professional injector cleaning?
  91. Is my fuel pressure low???? 93 Deville
  92. E62 Cruise control vacum solenoid error code
  93. I am going to make a cut out
  94. Problem adding a cutout to '90 Seville exhaust system,
  95. Flawed logic or a..
  96. transmission bolt up from 4.5L to 4.1L HT4100
  97. Does Anyone Have A Step By Step Guide To Adjusting The Tps?
  98. All Show And No Go
  99. Coolant issues must be contagious
  100. Coolant gushed out on highway, engine rattles
  101. Yet another exhaust theory question.
  102. 4.5 sounds real good with no cat
  103. Oil Pan Drain Plug Spins
  104. 87 Seville...Engine problems, knocking, overheating,do I shoot it?
  105. Can I use a regular fuel filter?
  106. Where is the fuel filter?
  107. RWD tranny for 4.9L??
  108. please help!!!!!!!
  109. Did I go overboard?
  110. Fuel: Maladies, Mayhem...Mileage!
  111. Errr... Map/Baro code. No clue what to do.
  112. Can a CS144 generator on a 4.9L be opened?
  113. Newbie here with a stall problem!
  114. The tricky TV cable...
  115. Now its knocking and oil light is on!!!
  116. Uh oh! I think my waterpump finally went!
  117. Accursed Ignition Timing...
  118. Whats makes one of your throtte blades wires Loose on one of the throttle blades
  119. How to gut a cat?
  120. Cooling Fans
  121. 90 Seville.. obd codes beginning with R??
  122. Sometimes she idles at 600-625... sometimes 900
  123. Oxygen sensor cured startup WOT
  124. Transmission rough downshifting to 1st
  125. Power Steering Leak...
  126. Tranny problem on an 89 eldo!
  127. If you need scans of service manual.. 1990 Cadillac
  128. This poor ol' car has been so abused.
  129. ****!!!! Flat Cam Now!!!!!!
  130. E53 - Distributor Signal Interrupt
  131. help
  132. HT-4100 modified for flex-fuel?
  133. 94 problem
  134. 4100 Engine Modified for Flex-Fuel?
  135. How important is the PCV?
  136. Replace the alternator or don't do it?
  137. 82 Hearse Hard Starting Cold - Codes
  138. Slight tick at idle, '92 Sedan deVille.
  139. Coolant Hell (and *gulp* headgasket?)
  140. Inconsistent loud bang from under hood
  141. mmmm Swisschesse.......ed the airbox :).
  142. Info on fuel injectors
  143. God No!!!!!!
  144. Reduced EGR flow - Detonation
  145. Fuel Pressure Inquiries
  146. My 4100 will not go past 50mph
  147. How come my motor goes full throttle on startup?
  148. Why are 4.x lifters noisy?
  149. 4.5 TBI vs 4.1 TBI
  150. power steering pump
  151. 93 Deville Loss of Power getting 6-7 MPG !!!
  152. Need Help Bad!
  153. 4.9 Exhaust
  154. 83 Eldorado swapping 4100 motors
  155. Wikipedia contradicted what I thought I knew
  156. I bought another HT4100 - a hearse
  157. Striped 4.9 Head Bolts Please Help
  158. Quick alternator question
  159. Please help! #1 service main part#?? 4.9 3545718 no good according to Cadillac?
  160. changing the distributer cap and rotor on a 91 deville 4.9
  161. Kill Switch - 1990 Cadillac DeVille
  162. Advice! My idle has gone nuts!
  163. SeaFoam Method
  164. Need Throttle Body Help!
  165. Shorted Mat sensor signal, E37.
  166. rhoads lifters?
  167. Say I buy a new 4.5 and transmission.. give me a rundown of wht it takes to put it in
  168. YES!!! It RUNS!!!!!
  169. Plugs and wires..
  170. Shadetree hall of shame.. I did something STUPID
  171. 4.9 Cracked Block Leaking Coolant
  172. How bad is this on the transmission...
  173. Rattling...
  174. Questions about replacing 4.5 motor/tranny
  175. 4.9 is running niiiiiiiiice.....
  176. Questions on ISC
  177. 4100 Timing Advance question.
  178. what causes an e55?
  179. 92 deville 4.9 timing cover question
  180. Why Does ?
  181. Fuel Injector Selection
  182. No overdrive
  183. Wobbly pulley
  184. 4.1 spark plug ????
  185. How much does 4.1 engine weigh??
  186. 1990 Cadillac Sedan DeVille
  187. Here is a video of the 86 fleetwood.
  188. Who's 4100 sounds like this?
  189. What is the BEST MOTOR FLUSH out there?
  190. Collapsed lifter!
  191. MAT sensor?
  192. Engine cradle bolts?
  193. Cam shaft test?...
  194. Can't get these bolts off...
  195. GM top end cleaner or seafoam..
  196. I broke my motor
  197. What causes a f48 code?
  198. Need to know ?
  199. GM Too Expensive Cleaner...
  200. oil problem
  201. I Am A Retard
  202. Engine Miss, (electronic not mechanical)
  203. Help with Plug Wires and a few other items on 4.9L 93 SDV
  204. 1985 4.1 Help
  205. 93' 4.9 Eldorado Heating
  206. Factory 4.x alternator
  207. Back firing/stalling/knocking HT-4100
  208. 88 deville tech question?
  209. Engine Upgrade?
  210. Little help with throttle issue...
  211. Custom Exhaust Manifolds and down pipe... for the 4.9
  212. 4.9 or 4.6
  213. FWD 86 Fleetwood For Sale.
  214. whats the diffrence?
  215. Help with cold stalling problem
  216. Misfire and absent fuel
  217. Timing 4.1L How to loosen dist???
  218. Tranny fluid frustration
  219. rough idle and bad miss
  220. Engine paranoia
  221. What are the pro's and con's of upgradeing your ignition system on a 4.9?
  222. remove fuel rail to change fpr on 4.9
  223. EGR Valve Location
  224. A question of exhaust theory...
  225. ecm data
  226. Fuel Injector Ripoff...
  227. Diagnostic code ?/EGR Valve
  228. '85 Deville, HT4100, considerable problems running properly...seeking help
  229. Looking For More Power From My 4.1
  230. Serpentine Belt Diagram 4100
  231. OBDI vs OBDII; AC compressor
  232. idle problem
  233. 4.9 distributor bushing wear
  234. What should I do to fix my bad gas mialage (really bad)
  235. Does the fpr have to leak to be bad?
  236. What is this sensor on the back of my 4.9 motor?
  237. Need help on alighning PRNDL switch.
  238. P/N for gaskets
  239. 88 Eldorado wont start
  240. prndl code
  241. E046 message
  242. PCV pipe???
  243. 10 mpg city and its not even like a city.Can it be my fpr.
  244. car throwing codes, decypher them please :D
  245. Fuel Pressure 92 Deville
  246. performance ??? ht4100
  247. ht4100 ?????
  248. Breather on 4T60E, is there and if so where is it?
  249. 1990 deville low reading
  250. 1990 deville vacuum