: Northstar Engines and System Technical Discussion



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  1. Strange banging noise - 2002 STS with Japanese-speaking DIC
  2. Tuneup - 1998 Northstar
  3. 03 Deville Motor mount R/I Hrs?
  4. 2004 Deville plenum replacement ?
  5. 1997 STS - Starting Issues and Rough Idle
  6. any help would be great tranny will not shift
  7. serpentine belt replacement
  8. Another overheating thread
  9. 2004 DHS - hard start, engine run problems
  10. Jake - Northstar Performance - your in-box is FULL -
  11. Arizona Northstar repair shop ?
  12. 98 Eldorado water cooled alternator doesn't charge when cold
  13. 1994 Eldorado - coolant leaks
  14. Coppery substance in coolant?
  15. problem with torque converter bolts
  16. 1999 Deville 4.6 Base misfire code
  17. Pre 2000 Northstar Crankshaft Position Sensors
  18. Replacing Coolant Crossover
  19. cooling system seal tablet
  20. 2002 STS Coolant Crossover Gaskets
  21. head gasket
  22. Suprise... Headgaskets
  23. Cost to replace oil pan gasket?
  24. Need help - considering a Northstar build for an ElCamino
  25. Dipstick reading
  26. North Star head bolt problem
  27. Spark plugs - 1997 Y Northstar
  28. first Cadillac questons about Northstar
  29. Head Bolt/stud question
  30. Just bought a 1995 Eldorado..was wondering what I should be looking at for maintenane
  31. 1999 SLS - apparent overheating ?
  32. Engine tap
  33. Compression And Leak Down Results.....Cam/Valve Timing Observation Discussion
  34. Why at the beginning of fuel rail and not end?
  35. 1999 DeVille coolant leak
  36. '97-won't start (fire)
  37. My Grandmothers Friend's 2000 STS has Misfire. She has a question
  38. P0507 Idle speed high after engine removal
  39. Engine block identification
  40. Cylinder Head Problems - 2005 DTS
  41. '99 Northstar head bolt torque values
  42. 1996 Deville - no fuel at the rail
  43. 2003 Deville idle air control valve
  44. 2000 Deville - dead batteries, no crank
  45. Engine cradle pulling down...
  46. 1996 Concours Oxygen Sensors
  47. 2000 - 2004 PCV piping question
  48. Help with a possible head gasket issue...2002 SLS
  49. Northstar 2001 Head Gasket Repair - Charlotte, North Carolina
  50. Northstar Engine Problems, were they ever corrected in production by GM??
  51. Anyone Ever Use A Company In Jersey Called Top Line Auto Care
  52. surge tank cap pressure
  53. Heater Pipe Adapter Part #?
  54. What Is This Gasket
  55. Northstar fuel fouling on Bank 2 good on Bank 1
  56. Thought I'd never buy another Northstar but...
  57. 2002 DTS transmission codes P 1860, P 0741
  58. Head gasket replacement
  59. Introduction - 1997 SLS with problems
  60. engine swap 2004 to a 1997 deville
  61. Northstar Engine Build Center, Batavia, NY - Northstar Performance LLC
  62. Snapped Main Bearing Bolts
  63. Head gasket question
  64. '97 DeVille NorthStar location of oil pressure switch?
  65. 2005 STS - Northstar longevity
  66. Cam Removal
  67. 2002 STS More Horsepower (Solid & Safe)
  68. Manifold over pressure valve - 1996 Northstar
  69. 2005 Deville 48k mi rough idle in morning. Thinking it could be HG issue.
  70. Not ready to give up - 1997 VIN Y Deville engine work
  71. 1999 STS Losing Coolant Possible Head Gasket
  72. Northstar wine
  73. Northstar Performance - officially offering custom PCM tuning January 2015
  74. Fuel rail and injector work on 2002 Deville
  75. Northstar VIN 9 - 2002 - engine exhaust work
  76. oil in coolant-'99 deville
  77. Northstar using excessive oil
  78. 2002 Deville AIR pump cover replacement
  79. 2002 Northstar VIN Y>9 cam swap and P/N questions - cam TSB
  80. 97 deville Help with rear coolant leak
  81. Boost and engine management - 1997 Eldorado base
  82. Cam cover bolts loose
  83. Possible HG leak in '01 SLS
  84. Upper front coolant pipe- 2000 ESC
  85. Northstar Motor Swap - 2008 into 2001 car
  86. Weird oil leak - 2002 Deville
  87. 02 Deville base different color valve covers?
  88. Northstar flexplate bolt circle question
  89. LH2 swap into another car ; questions about the northstar and computer
  90. Northstar rebuild 01 eldo
  91. No acceleration... 2003 Deville
  92. 2000 Deville misfire cylinders 1 and 2
  93. Should this come off easily?
  94. Northstar exercise and driving style
  95. 2003 Deville starter motor location
  96. 1993 4.6L Northstar engine swap into hotrod project.
  97. Whining noise at startup - 2001 Eldorado
  98. Rough idle 99'
  99. Installing a crank kit in a 99 sls
  100. very quick temp spike then normal
  101. $150 made $1,000 worth of difference
  102. Question & Video of movement in secondary cam chain
  103. 1994 SLS no-start problems
  104. What is a good operating temperature?
  105. P0336 -Crankshaft Position Sensor 'A'
  106. How to tell which valve lash adjuster is faulty.
  107. Time for HG repair
  108. icm (ignition control module) problem keeps going out
  109. How to know if you have already entered some inserts in my engine?
  110. 2000 Northstar Strange Starter Issue?
  111. 99 Northstar rebuild questions
  112. Northstars sorted out yet?
  113. 4.6 white smoke issue
  114. Northstar and a turbo
  115. 2003 Deville misfire when warm
  116. 02 Deville 90k - low idle
  117. Need bolt torque specs: Flywheel, Torque Converter, Trans bolts.
  118. All of a sudden 2003 Deville developed a miss
  119. Northstar swap wiring harness question
  120. Please post a State & City guide to Northstar Head Gasket repair shops that you know
  121. replacing the oil pan in a 2000 deville
  122. Northstar - AIR valves ?
  123. 1994 N* Fuel Pressure Regulator
  124. New Northstar Engines
  125. Timing Chain Guide Adapt - 98+ to the old style engines
  126. 97' ETC check engine gives all O2 codes
  127. Northstar Overhaul Shop near Southern Maine, NH or MA
  128. Finished Replacement Front Engine Mount
  129. Studs officially shipping from the USA - thanks to JoeTahoe
  130. what to check when buying a northstar?
  131. Can I run 40W or 50w OIL on my NORTHSTAR 4.6? I live in very HOT WEATHER
  132. How to check for Hydrolock?
  133. 1999 Deville smokes at idle
  134. 2002 Deville - Knock sensor ?
  135. 96 Deville - Misfire on #8
  136. MAP sensor location critical ?
  137. 93-94 Northstar Water Pump Tensioner
  138. Please post recommended Northstar Repair Shops in Florida
  139. Cradle won't drop on 98 STS
  140. Replaced old radiator due to crack, overheats with new radiator.. PLEASE HELP
  141. 4 Bad Headgaskets
  142. What is involved in swapping a 93 Edo vin9 with a 95 viny (is it doable) ?????
  143. Swap Nightmare
  144. 2000 Deville possible overheat
  145. EVAP code P 0442
  146. Deville Northtar engine swap and PCM problems
  147. 04 Deville - engine upgrades
  148. 2001 Deville: Won't stay running while in drive
  149. Nortstar engine removal.
  150. Engine overheat and oil in coolant - 2001 STS
  151. What do you like about your Northstar powered vehicle?
  152. Is it possible to remove the cams and keep the timing chain tensioner in place?
  153. Low coolant sensor
  154. 1999 STS leaking coolant
  155. My story: HG headgasket failure
  156. LH2 Swap - Issue starting
  157. Oil/coolant mixing
  158. Throttle Position Sensor relearn ??
  159. 2000 & up Seville air intake resonator
  160. 2001 Seville engine overhaul questions
  161. 2000 Deville Fuel Pressure Specs
  162. 2002 Deville rough idle
  163. 99 eldorado 02 sensors
  164. Oil Pressure Sending Unit - SRX
  165. P0308 #8 Misfire issue... Replaced a lot, still have issue
  166. 99 STS hard cold start. No codes, fpr tests ok and fuel is 44 psi running
  167. A method to remove Crankshaft bolt without locking the flywheel or using the starter.
  168. 2002 Deville AIR pump Vacuum line Routing
  169. 1999 Deville Headgasket - head job or total overhaul ?
  170. 2001 deville engine making kocking noise
  171. 2002 Deville Overheating after Thermostat replacement
  172. Water pump drive pulley
  173. Special tool for Northstar water pump drive pulley
  174. Reliability of 2005 and beyond Northstar-powered cars
  175. Harmonic Balancer Torque
  176. Need advice on who to do a Northstar head job in the Huntsville Alabama area
  177. NGK Spark plugs & coolant level message - 2003 Deville
  178. Get a Free set of Main Studs with Purchase of Sure Grip Cylinder Head Stud Kit
  179. Developed an engine whine... what is it?
  180. Please help with PCM issue on 1993 Allante
  181. limp mode..now misfire
  182. Water cooled alternator - what years/models ?
  183. O2 Sensors in a Hot Rod Set-up
  184. 2002 Northstar WOT, performance brakes, CORSA ?
  185. 1996 and later Northstar performance chips
  186. Magnaflows on a 2003 Deville
  187. socket down camshaft drive chain slot
  188. coolant drip middle front lower
  189. 2005 STS Camshaft Sensor Location? V8 4.6 engine
  190. Pcm issue or camshaft issue any help
  191. Rail / Injector Leak Deville 99
  192. Northstar chips, cold air intakes, and spark plugs
  193. coil on plug ignition modules
  194. Mystery Check Engine Light
  195. Only starts with starting fluid - '97 SLS
  196. 99 STS head gasket repair [ in car]
  197. Problem with 97 Eldorado. P 0300...
  198. 02 Cooling building back pressure. Purge line clear.
  199. 1998 STS coolant change
  200. Mystery Black Wire
  201. Oil pressure
  202. 98 deville, uses oil? but how
  203. What year is my Northstar motor, and what cars will it drop into?
  204. trouble with spark from coil packs
  205. Replace and Reprogram PCM 2001 DTS
  206. 1995 SLS - Poor idle quality
  207. Oil Pan Gasket and Permatex UltraGray placement
  208. 98 Deville, changing the coolant, sealant tabs?
  209. 2000 series Northstar water pump will not come out
  210. Fuel pressure regulator
  211. 2003 Deville - exhaust steaming and coolant loss
  212. Can't remove Water Pump Drive pulley.. ever seen one that is stuck?
  213. Best Rear Main Seal Fix?
  214. Critique my coolant flush method
  215. Oil pressure light - 1998 Deville Northstar
  216. 1994 Eldorado thermostat replacement and coolant leak
  217. EGR Tubing
  218. '02 Seville was running fine, now it's not ?
  219. flex tube exhaust
  220. 01 Northstar Water in oil, high oil use, misses when cold.
  221. Coolant Leak Source? (pictures)
  222. When to reseal case halves?
  223. Look what I found in my engine!
  224. Puzzling Clattering Noise During Warm Startups
  225. HG's vs Pulled Threads
  226. Cat problems?
  227. Oil leaks on 1998 ElDorado
  228. 2000+ Intake Manifold on 1998 Northstar
  229. 2001 Deville - coolant boiling in reservoir
  230. Problem with my 1994 Eldorado engine - smoking
  231. code P 0171, P 0174 - solved
  232. Unable to communicate with the console cluster
  233. North Star Engine Disappointment (copy)
  234. SJ - API oil
  235. 97 ETC exhaust manifold fasterners.
  236. Fix the engine, (HG), replace the engine?
  237. Where does this go...?
  238. PCV Valve Elbow?
  239. Pics of my oil leaks
  240. combustion leak tester
  241. Anyone used Lucas Engine Stop Leak?
  242. Water pump issue, mostly? 1994 STS
  243. 98 Deville Water Pump Fail After Serpentine Belt Replaced
  244. Water Pump - Failing When Hot
  245. Oil Pan Leak?
  246. 2002 Deville misfire on Northstar
  247. I'm gonna do a block test today
  248. Car keeps overheating
  249. Service fuel system
  250. radiator cap # ?