: Northstar Engines and System Technical Discussion



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