: Northstar Engines and System Technical Discussion



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