: Northstar Engines and System Technical Discussion



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  1. 97 ETC exhaust manifold fasterners.
  2. Fix the engine, (HG), replace the engine?
  3. Where does this go...?
  4. PCV Valve Elbow?
  5. Pics of my oil leaks
  6. combustion leak tester
  7. Anyone used Lucas Engine Stop Leak?
  8. Water pump issue, mostly? 1994 STS
  9. 98 Deville Water Pump Fail After Serpentine Belt Replaced
  10. Water Pump - Failing When Hot
  11. Oil Pan Leak?
  12. 2002 Deville misfire on Northstar
  13. I'm gonna do a block test today
  14. Car keeps overheating
  15. Service fuel system
  16. radiator cap # ?
  17. Northstar Loan-A-Tool Program, USA shipping on stud kits
  18. EGR Major Issues..help!
  19. 2000 Deville surging?
  20. 1998 STS crankshaft position sensors location
  21. Deville engine swaps and differences
  22. Water pump won't break
  23. New business pratices and standards coming into effect Apr 15/2014
  24. AIR pump on '99
  25. 1995 STS - multiple crank cold starts
  26. Pre-diagnosing HG issues?
  27. eldo running hot
  28. Which alternator? 94 Deville Concours
  29. My 1994 Deville 4.9 is starting to show some signs.
  30. 1999 deville - replaced water pump - running hot
  31. 2009 Buick Lucerne Headgasket
  32. The American V8 - Anatomy of a Hydrolock
  33. 2005 Deville oil pan seal leak
  34. Vacuum diagram
  35. 1997 STS - Long crank/start times - (Advice / Ideas)
  36. Lower crankcase reseal - 2005 Deville
  37. My sincerest apologies and also thanks -
  38. headbolt inserts
  39. Northstar and carbon cleaning
  40. Running but ............... 2001 Northstar
  41. 2000 DTS - no power
  42. To buy or not to buy.....1998 ESC
  43. 1996 DeVille flex plate replacement
  44. engine oil in intake manifold
  45. 2004 DTS Frustrations... misfires and SES
  46. 2000 SLS powertrain/ cradle removal
  47. 98 deville coolant smell?
  48. 02 N☆ Fuel Pressure
  49. Air intake upgrade - DTS Performance ?
  50. 2007 Engine Knock 4.6 Help
  51. The Caddy lives again - Life after the dreaded head leakage
  52. 1997 Deville - EGR remove & replace
  53. Northstar head bolt hole thread repair options
  54. Northstar Production Numbers 1993-2009
  55. 2000 STS - P 0300 - rough idle
  56. 2003 Seville EGR codes
  57. 2004 DHS - CMP location ?
  58. Mechinical buzzing noise from under hood ( 2002 Deville, 150,000)
  59. Blue devil and Norhtstar:
  60. Stalling issue - slow speeds - 1998 ETC
  61. Damaged throttle cable (1998 Deville)
  62. 2000 DTS - correct replacement engine ?
  63. My experience with the water crossover job
  64. Northstar Swap Question
  65. Interesting Listing........ pre-2000 Northstar and transmission
  66. 2001 Deville oil distribution manifold plate seal leak
  67. 1998 Deville has leak at water crossover (150,000 miles)
  68. 2003 Head Gasket Repair
  69. 2006 Northstar engine problems - Buick Lucerne
  70. Water pump? 1999 STS overheating
  71. Northstar swap into a 1987 Fiero GT - engines and differences
  72. Oil Filter Pre-fill
  73. The InFamous N* Oil Leak - Oil Manifold
  74. Engine miss - 1998 Deville
  75. Priming Northstar after total rebuild
  76. Which Rear Main Seal installer do I need for a 1999 DeVille?
  77. Alt amps too high?
  78. 2003 STS engine seized
  79. Cylinder damage question....extended idling
  80. Anyone use "cadillacheadgasketfix.com" in bellflower, ca. to rebuild their Northstar?
  81. My 2000 Deville is back to life
  82. Melted camshaft water pump drive pulley
  83. 2001 Deville N* Spark plug boots questions
  84. drove over curb in fog 96 cadi died and wont restart
  85. fuel injector removal
  86. 2000 head gasket/ insert differences
  87. Northstar overheating-Repair
  88. Head porting Northstar...
  89. 01 Seville runs rough, 0306 code intermittent
  90. Attention all Northstar engine owners - Carroll Cadillac studs
  91. Questions about pre 00 Northstar oil change and use of additives
  92. Pressure in expansion tank
  93. ran out of gas now my SES light turned on any help
  94. New Northstar Crate Engines
  95. very bad coolant leak
  96. High Idle question
  97. Flowmasters on a 2003 SLS
  98. Simple spark plug question - Northstar "tune up"
  99. Results posted - Christmas Draw - FREE STUD KIT!
  100. 2004 Deville rough idle
  101. 1996 Deville fuel injectors
  102. Cylinder head bolt replacement
  103. Northstar R&D-Bench Test Apparatus
  104. Hello Cadillac/Northstar owners
  105. 1996 Deville...... 4.6 Northstar trouble......lotsa trouble.
  106. P0300 Misfire - My problem and solution + more problems...
  107. Best Engine Mounts - 1993-1994 or the newer?
  108. Blown head gasket repair
  109. occassional stalling problem
  110. 05 Deville
  111. Northstar battery life expectation
  112. 2001 DTS Valve Clearance question
  113. Fuel Pump Longevity/Milage Expectations
  114. Torquing N* head
  115. 96' Northstar cranks, will not start
  116. 01 Deville Cylinder #1 misfire
  117. bucking and kicking
  118. Northstar sitting for 12 years...need new springs?
  119. 2005 Bonneville GXP Northstar jumped time
  120. 2001 ETC Intermittent High Idle
  121. 2001 DTS won't accelerate past 2K rpms after spark plug change
  122. Advice on NorthStar coils - both ignition types
  123. Another Shout Out to Jake!!
  124. Code P 0171 showing - 1999 Deville
  125. 2001 DTS - interference engine 4.6l and timing chain replacement ?
  126. Studded heads update
  127. 1999 STS coolant questions
  128. 2000 STS NS smoking under hood after WOT
  129. Governor in NorthStar V8?
  130. O2 sensor-bank 1 S1
  131. No spark
  132. Please help! 94 SLS water pump cover...
  133. Wherer do these parts go ???
  134. Sudden Increase in Oil Consumption 2003 DHS
  135. Crankshaft pulley wobble
  136. 2001 Deville. Can't start after reinstalling engine
  137. Head gaskets and Time-Serts
  138. Oil pump?
  139. Help find part
  140. Maximum valve lift 04-05 Northstar 4.6
  141. 96' Northstar coolant leak
  142. cooling fan relays
  143. Help - 1993 Eldorado needs new engine
  144. Head Bolt Threads - Bonneville Northstar
  145. DOHC theory, any new information?
  146. Compression Ring Treatment
  147. 300 Northstar Headgasket repairs completed
  148. Where do these go?
  149. New motor to replace the northstar
  150. Northstar Replacement
  151. 2001 Deville hesitates while accelerating
  152. Retirement from the physical repairs to focus on the stud kits-
  153. The Dreaded Northstar Leaking Head Gasket- Fix, Sell or Junk?
  154. Why Leaking Headgaskets
  155. Is it dangerous - cracked flexplate on a Northstar
  156. 2008 STS engin dont swing
  157. fuel pump suddenly stops
  158. Stumble and stall
  159. Valve cover gaskets
  160. On the road again!
  161. 2001 Deville flat or domed pistons
  162. Changing the water pump "Belt?
  163. 1998 STS - Dies at speed and won't restart sometimes.
  164. Is it safe to buy a Northstar now? I can't stop driving Cadillacs!
  165. Northstar size question
  166. Need mechanic - 1994 STS Northstar near Winnipeg
  167. Northstar overheating
  168. Interchangeability of VIN: 9 and VIN: Y transmissions?
  169. Northstar Commander 950 base Map - sand rail install
  170. overheating need help
  171. Just a head gasket failure?
  172. Northstar engine questions from Finland
  173. P 0171 and P 0174 code - 2004 Deville
  174. new generator-->ECM broken
  175. Disconnecting EGR
  176. water crossover
  177. mid case reseal tsb
  178. 4.6 N* Cylinder walls
  179. Replacing the alternator on 97 Deville Concours
  180. Ready to stud another northstar
  181. Heli-Coil removal?
  182. Northstar Performance
  183. Wanted to clean EGR but what have those engineers done now
  184. 99 N* rebuilt and burning lots of oil
  185. Northstar into Chevy Beretta swap
  186. 2001 Deville overheating... block test OK
  187. low oil pressure
  188. Pros & Cons Cadillac 4.6 vs Ford 4.6 (eg lincoln mark viii and others)
  189. Codes P0171, P0174 and P1258 come up on 1997 Deville
  190. Coil pack
  191. Eastern Massachusetts Cadillac shops?
  192. voltage question
  193. Bouncing Idles - 1995 SLS Northstar
  194. 2000 STS question
  195. Northstar maintenance requirements - 2005 Deville
  196. Brand New 1993-1994 Northstar Engine - Oil Leak Modified or Not
  197. Hard Starting Warm - if not Pedal to the Metal
  198. DHS 2000 won't start after changing CranKshaft and CaMshaft Position Sensors
  199. 1996 Deville over heats when ac is on
  200. HG question - 1997 Eldorado, 127000 miles
  201. need help
  202. Now what do I do? Northstar block casting porosity
  203. Coolant all over top of engine?
  204. 97 SLS Overheating - I've checked everything and need ideas
  205. 03 Deville hard idle and bogging out lower speeds
  206. 2003 Deville CKP codes
  207. P 0300 random misfire - 2000 STS
  208. Northstar Performance rebuilt engine
  209. exhaust buzzing noise 2006 dts
  210. Northstar head repair in Chicagoland area
  211. Guide pins
  212. Installing Rear Main Seal with Crank Removed
  213. Heater core follows head gasket ?
  214. 99 SLS overheating, need help
  215. Fixing Head Gasket
  216. Kent-Moore VS Time-sert
  217. Bought 1998 Deville 4 days ago - overheating
  218. Northstar: Did they ever get better?
  219. I need step by step procedure to replace a 2005 STS motor LH2 quickly
  220. HG test and green result
  221. Eliminating/raising the speed limiter - how to?
  222. Water pump removal socket-northstar
  223. Lurching idle
  224. 5.3 motor
  225. 95 Eldorado alternator plug wiring
  226. OVERHEATING (Long)
  227. 2000 Deville Motor Mount Heat Shield
  228. 95-99 Engine Beauty Cover - Intake bolts Not lining up
  229. 1998 STS Trouble Codes & Emission Test
  230. A positive HG repair experience
  231. 2000 DHS transmission light on
  232. Anyone that has pulled an N*? PLEASE! I need some advice.
  233. Blown Head Gasket Help
  234. Sell or Keep N*
  235. Best way to clean the engine bay?
  236. Shops that specilize in head gasket repair.
  237. oil loadup at idle
  238. EGR Cleaning - '97 ETC
  239. engine over heating..
  240. Cleared PCM codes - now emissions test not ready
  241. Madtuner.com
  242. N* 4.6 Bad Compression, Help Please
  243. Best Replacement Mount For 2000 Deville
  244. Do not stud a Northstar
  245. Drilling and Tapping The Northstar V8......my personal experience so far.
  246. Northstar TB upgrade
  247. 2002 Deville Transaxle
  248. clogged heater core
  249. 2000 Deville Base - Front Ground Wire
  250. fuel injectors,1993 4.6 northstar VIn Y