: Northstar Engines and System Technical Discussion



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  1. Head gasket replacement
  2. Introduction - 1997 SLS with problems
  3. engine swap 2004 to a 1997 deville
  4. Northstar Engine Build Center, Batavia, NY - Northstar Performance LLC
  5. Snapped Main Bearing Bolts
  6. Head gasket question
  7. '97 DeVille NorthStar location of oil pressure switch?
  8. 2005 STS - Northstar longevity
  9. Cam Removal
  10. 2002 STS More Horsepower (Solid & Safe)
  11. Manifold over pressure valve - 1996 Northstar
  12. 2005 Deville 48k mi rough idle in morning. Thinking it could be HG issue.
  13. Not ready to give up - 1997 VIN Y Deville engine work
  14. 1999 STS Losing Coolant Possible Head Gasket
  15. Northstar wine
  16. Northstar Performance - officially offering custom PCM tuning January 2015
  17. Fuel rail and injector work on 2002 Deville
  18. Northstar VIN 9 - 2002 - engine exhaust work
  19. oil in coolant-'99 deville
  20. Northstar using excessive oil
  21. 2002 Deville AIR pump cover replacement
  22. 2002 Northstar VIN Y>9 cam swap and P/N questions - cam TSB
  23. 97 deville Help with rear coolant leak
  24. Boost and engine management - 1997 Eldorado base
  25. Cam cover bolts loose
  26. Possible HG leak in '01 SLS
  27. Upper front coolant pipe- 2000 ESC
  28. Northstar Motor Swap - 2008 into 2001 car
  29. Weird oil leak - 2002 Deville
  30. 02 Deville base different color valve covers?
  31. Northstar flexplate bolt circle question
  32. LH2 swap into another car ; questions about the northstar and computer
  33. Northstar rebuild 01 eldo
  34. No acceleration... 2003 Deville
  35. 2000 Deville misfire cylinders 1 and 2
  36. Should this come off easily?
  37. Northstar exercise and driving style
  38. 2003 Deville starter motor location
  39. 1993 4.6L Northstar engine swap into hotrod project.
  40. Whining noise at startup - 2001 Eldorado
  41. Rough idle 99'
  42. Installing a crank kit in a 99 sls
  43. very quick temp spike then normal
  44. $150 made $1,000 worth of difference
  45. Question & Video of movement in secondary cam chain
  46. 1994 SLS no-start problems
  47. What is a good operating temperature?
  48. P0336 -Crankshaft Position Sensor 'A'
  49. How to tell which valve lash adjuster is faulty.
  50. Time for HG repair
  51. icm (ignition control module) problem keeps going out
  52. How to know if you have already entered some inserts in my engine?
  53. 2000 Northstar Strange Starter Issue?
  54. 99 Northstar rebuild questions
  55. Northstars sorted out yet?
  56. 4.6 white smoke issue
  57. Northstar and a turbo
  58. 2003 Deville misfire when warm
  59. 02 Deville 90k - low idle
  60. Need bolt torque specs: Flywheel, Torque Converter, Trans bolts.
  61. All of a sudden 2003 Deville developed a miss
  62. Northstar swap wiring harness question
  63. Please post a State & City guide to Northstar Head Gasket repair shops that you know
  64. replacing the oil pan in a 2000 deville
  65. Northstar - AIR valves ?
  66. 1994 N* Fuel Pressure Regulator
  67. New Northstar Engines
  68. Timing Chain Guide Adapt - 98+ to the old style engines
  69. 97' ETC check engine gives all O2 codes
  70. Northstar Overhaul Shop near Southern Maine, NH or MA
  71. Finished Replacement Front Engine Mount
  72. Studs officially shipping from the USA - thanks to JoeTahoe
  73. what to check when buying a northstar?
  74. Can I run 40W or 50w OIL on my NORTHSTAR 4.6? I live in very HOT WEATHER
  75. How to check for Hydrolock?
  76. 1999 Deville smokes at idle
  77. 2002 Deville - Knock sensor ?
  78. 96 Deville - Misfire on #8
  79. MAP sensor location critical ?
  80. 93-94 Northstar Water Pump Tensioner
  81. Please post recommended Northstar Repair Shops in Florida
  82. Cradle won't drop on 98 STS
  83. Replaced old radiator due to crack, overheats with new radiator.. PLEASE HELP
  84. 4 Bad Headgaskets
  85. What is involved in swapping a 93 Edo vin9 with a 95 viny (is it doable) ?????
  86. Swap Nightmare
  87. 2000 Deville possible overheat
  88. EVAP code P 0442
  89. Deville Northtar engine swap and PCM problems
  90. 04 Deville - engine upgrades
  91. 2001 Deville: Won't stay running while in drive
  92. Nortstar engine removal.
  93. Engine overheat and oil in coolant - 2001 STS
  94. What do you like about your Northstar powered vehicle?
  95. Is it possible to remove the cams and keep the timing chain tensioner in place?
  96. Low coolant sensor
  97. 1999 STS leaking coolant
  98. My story: HG headgasket failure
  99. LH2 Swap - Issue starting
  100. Oil/coolant mixing
  101. Throttle Position Sensor relearn ??
  102. 2000 & up Seville air intake resonator
  103. 2001 Seville engine overhaul questions
  104. 2000 Deville Fuel Pressure Specs
  105. 2002 Deville rough idle
  106. 99 eldorado 02 sensors
  107. Oil Pressure Sending Unit - SRX
  108. P0308 #8 Misfire issue... Replaced a lot, still have issue
  109. 99 STS hard cold start. No codes, fpr tests ok and fuel is 44 psi running
  110. A method to remove Crankshaft bolt without locking the flywheel or using the starter.
  111. 2002 Deville AIR pump Vacuum line Routing
  112. 1999 Deville Headgasket - head job or total overhaul ?
  113. 2001 deville engine making kocking noise
  114. 2002 Deville Overheating after Thermostat replacement
  115. Water pump drive pulley
  116. Special tool for Northstar water pump drive pulley
  117. Reliability of 2005 and beyond Northstar-powered cars
  118. Harmonic Balancer Torque
  119. Need advice on who to do a Northstar head job in the Huntsville Alabama area
  120. NGK Spark plugs & coolant level message - 2003 Deville
  121. Get a Free set of Main Studs with Purchase of Sure Grip Cylinder Head Stud Kit
  122. Developed an engine whine... what is it?
  123. Please help with PCM issue on 1993 Allante
  124. limp mode..now misfire
  125. Water cooled alternator - what years/models ?
  126. O2 Sensors in a Hot Rod Set-up
  127. 2002 Northstar WOT, performance brakes, CORSA ?
  128. 1996 and later Northstar performance chips
  129. Magnaflows on a 2003 Deville
  130. socket down camshaft drive chain slot
  131. coolant drip middle front lower
  132. 2005 STS Camshaft Sensor Location? V8 4.6 engine
  133. Pcm issue or camshaft issue any help
  134. Rail / Injector Leak Deville 99
  135. Northstar chips, cold air intakes, and spark plugs
  136. coil on plug ignition modules
  137. Mystery Check Engine Light
  138. Only starts with starting fluid - '97 SLS
  139. 99 STS head gasket repair [ in car]
  140. Problem with 97 Eldorado. P 0300...
  141. 02 Cooling building back pressure. Purge line clear.
  142. 1998 STS coolant change
  143. Mystery Black Wire
  144. Oil pressure
  145. 98 deville, uses oil? but how
  146. What year is my Northstar motor, and what cars will it drop into?
  147. trouble with spark from coil packs
  148. Replace and Reprogram PCM 2001 DTS
  149. 1995 SLS - Poor idle quality
  150. Oil Pan Gasket and Permatex UltraGray placement
  151. 98 Deville, changing the coolant, sealant tabs?
  152. 2000 series Northstar water pump will not come out
  153. Fuel pressure regulator
  154. 2003 Deville - exhaust steaming and coolant loss
  155. Can't remove Water Pump Drive pulley.. ever seen one that is stuck?
  156. Best Rear Main Seal Fix?
  157. Critique my coolant flush method
  158. Oil pressure light - 1998 Deville Northstar
  159. 1994 Eldorado thermostat replacement and coolant leak
  160. EGR Tubing
  161. '02 Seville was running fine, now it's not ?
  162. flex tube exhaust
  163. 01 Northstar Water in oil, high oil use, misses when cold.
  164. Coolant Leak Source? (pictures)
  165. When to reseal case halves?
  166. Look what I found in my engine!
  167. Puzzling Clattering Noise During Warm Startups
  168. HG's vs Pulled Threads
  169. Cat problems?
  170. Oil leaks on 1998 ElDorado
  171. 2000+ Intake Manifold on 1998 Northstar
  172. 2001 Deville - coolant boiling in reservoir
  173. Problem with my 1994 Eldorado engine - smoking
  174. code P 0171, P 0174 - solved
  175. Unable to communicate with the console cluster
  176. North Star Engine Disappointment (copy)
  177. SJ - API oil
  178. 97 ETC exhaust manifold fasterners.
  179. Fix the engine, (HG), replace the engine?
  180. Where does this go...?
  181. PCV Valve Elbow?
  182. Pics of my oil leaks
  183. combustion leak tester
  184. Anyone used Lucas Engine Stop Leak?
  185. Water pump issue, mostly? 1994 STS
  186. 98 Deville Water Pump Fail After Serpentine Belt Replaced
  187. Water Pump - Failing When Hot
  188. Oil Pan Leak?
  189. 2002 Deville misfire on Northstar
  190. I'm gonna do a block test today
  191. Car keeps overheating
  192. Service fuel system
  193. radiator cap # ?
  194. Northstar Loan-A-Tool Program, USA shipping on stud kits
  195. EGR Major Issues..help!
  196. 2000 Deville surging?
  197. 1998 STS crankshaft position sensors location
  198. Deville engine swaps and differences
  199. Water pump won't break
  200. New business pratices and standards coming into effect Apr 15/2014
  201. AIR pump on '99
  202. 1995 STS - multiple crank cold starts
  203. Pre-diagnosing HG issues?
  204. eldo running hot
  205. Which alternator? 94 Deville Concours
  206. My 1994 Deville 4.9 is starting to show some signs.
  207. 1999 deville - replaced water pump - running hot
  208. 2009 Buick Lucerne Headgasket
  209. The American V8 - Anatomy of a Hydrolock
  210. 2005 Deville oil pan seal leak
  211. Vacuum diagram
  212. 1997 STS - Long crank/start times - (Advice / Ideas)
  213. Lower crankcase reseal - 2005 Deville
  214. My sincerest apologies and also thanks -
  215. headbolt inserts
  216. Northstar and carbon cleaning
  217. Running but ............... 2001 Northstar
  218. 2000 DTS - no power
  219. To buy or not to buy.....1998 ESC
  220. 1996 DeVille flex plate replacement
  221. engine oil in intake manifold
  222. 2004 DTS Frustrations... misfires and SES
  223. 2000 SLS powertrain/ cradle removal
  224. 98 deville coolant smell?
  225. 02 N☆ Fuel Pressure
  226. Air intake upgrade - DTS Performance ?
  227. 2007 Engine Knock 4.6 Help
  228. The Caddy lives again - Life after the dreaded head leakage
  229. 1997 Deville - EGR remove & replace
  230. Northstar head bolt hole thread repair options
  231. Northstar Vehicle Production Numbers 1993-2009
  232. 2000 STS - P 0300 - rough idle
  233. 2003 Seville EGR codes
  234. 2004 DHS - CMP location ?
  235. Mechinical buzzing noise from under hood ( 2002 Deville, 150,000)
  236. Blue devil and Norhtstar:
  237. Stalling issue - slow speeds - 1998 ETC
  238. Damaged throttle cable (1998 Deville)
  239. 2000 DTS - correct replacement engine ?
  240. My experience with the water crossover job
  241. Northstar Swap Question
  242. Interesting Listing........ pre-2000 Northstar and transmission
  243. 2001 Deville oil distribution manifold plate seal leak
  244. 1998 Deville has leak at water crossover (150,000 miles)
  245. 2003 Head Gasket Repair
  246. 2006 Northstar engine problems - Buick Lucerne
  247. Water pump? 1999 STS overheating
  248. Northstar swap into a 1987 Fiero GT - engines and differences
  249. Oil Filter Pre-fill
  250. The InFamous N* Oil Leak - Oil Manifold