: Northstar Engines and System Technical Discussion



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