: Northstar Engines and System Technical Discussion



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  1. What kind of code reader?
  2. 99- and 00+ Interchangeability
  3. Strange banging noise - 2002 STS with Japanese-speaking DIC
  4. Tuneup - 1998 Northstar
  5. 03 Deville Motor mount R/I Hrs?
  6. 2004 Deville plenum replacement ?
  7. 1997 STS - Starting Issues and Rough Idle
  8. any help would be great tranny will not shift
  9. serpentine belt replacement
  10. Another overheating thread
  11. 2004 DHS - hard start, engine run problems
  12. Jake - Northstar Performance - your in-box is FULL -
  13. Arizona Northstar repair shop ?
  14. 98 Eldorado water cooled alternator doesn't charge when cold
  15. 1994 Eldorado - coolant leaks
  16. Coppery substance in coolant?
  17. problem with torque converter bolts
  18. 1999 Deville 4.6 Base misfire code
  19. Pre 2000 Northstar Crankshaft Position Sensors
  20. Replacing Coolant Crossover
  21. cooling system seal tablet
  22. 2002 STS Coolant Crossover Gaskets
  23. head gasket
  24. Suprise... Headgaskets
  25. Cost to replace oil pan gasket?
  26. Need help - considering a Northstar build for an ElCamino
  27. Dipstick reading
  28. North Star head bolt problem
  29. Spark plugs - 1997 Y Northstar
  30. first Cadillac questons about Northstar
  31. Head Bolt/stud question
  32. Just bought a 1995 Eldorado..was wondering what I should be looking at for maintenane
  33. 1999 SLS - apparent overheating ?
  34. Engine tap
  35. Compression And Leak Down Results.....Cam/Valve Timing Observation Discussion
  36. Why at the beginning of fuel rail and not end?
  37. 1999 DeVille coolant leak
  38. '97-won't start (fire)
  39. My Grandmothers Friend's 2000 STS has Misfire. She has a question
  40. P0507 Idle speed high after engine removal
  41. Engine block identification
  42. Cylinder Head Problems - 2005 DTS
  43. '99 Northstar head bolt torque values
  44. 1996 Deville - no fuel at the rail
  45. 2003 Deville idle air control valve
  46. 2000 Deville - dead batteries, no crank
  47. Engine cradle pulling down...
  48. 1996 Concours Oxygen Sensors
  49. 2000 - 2004 PCV piping question
  50. Help with a possible head gasket issue...2002 SLS
  51. Northstar 2001 Head Gasket Repair - Charlotte, North Carolina
  52. Northstar Engine Problems, were they ever corrected in production by GM??
  53. Anyone Ever Use A Company In Jersey Called Top Line Auto Care
  54. surge tank cap pressure
  55. Heater Pipe Adapter Part #?
  56. What Is This Gasket
  57. Northstar fuel fouling on Bank 2 good on Bank 1
  58. Thought I'd never buy another Northstar but...
  59. 2002 DTS transmission codes P 1860, P 0741
  60. Head gasket replacement
  61. Introduction - 1997 SLS with problems
  62. engine swap 2004 to a 1997 deville
  63. Northstar Engine Build Center, Batavia, NY - Northstar Performance LLC
  64. Snapped Main Bearing Bolts
  65. Head gasket question
  66. '97 DeVille NorthStar location of oil pressure switch?
  67. 2005 STS - Northstar longevity
  68. Cam Removal
  69. 2002 STS More Horsepower (Solid & Safe)
  70. Manifold over pressure valve - 1996 Northstar
  71. 2005 Deville 48k mi rough idle in morning. Thinking it could be HG issue.
  72. Not ready to give up - 1997 VIN Y Deville engine work
  73. 1999 STS Losing Coolant Possible Head Gasket
  74. Northstar wine
  75. Northstar Performance - officially offering custom PCM tuning January 2015
  76. Fuel rail and injector work on 2002 Deville
  77. Northstar VIN 9 - 2002 - engine exhaust work
  78. oil in coolant-'99 deville
  79. Northstar using excessive oil
  80. 2002 Deville AIR pump cover replacement
  81. 2002 Northstar VIN Y>9 cam swap and P/N questions - cam TSB
  82. 97 deville Help with rear coolant leak
  83. Boost and engine management - 1997 Eldorado base
  84. Cam cover bolts loose
  85. Possible HG leak in '01 SLS
  86. Upper front coolant pipe- 2000 ESC
  87. Northstar Motor Swap - 2008 into 2001 car
  88. Weird oil leak - 2002 Deville
  89. 02 Deville base different color valve covers?
  90. Northstar flexplate bolt circle question
  91. LH2 swap into another car ; questions about the northstar and computer
  92. Northstar rebuild 01 eldo
  93. No acceleration... 2003 Deville
  94. 2000 Deville misfire cylinders 1 and 2
  95. Should this come off easily?
  96. Northstar exercise and driving style
  97. 2003 Deville starter motor location
  98. 1993 4.6L Northstar engine swap into hotrod project.
  99. Whining noise at startup - 2001 Eldorado
  100. Rough idle 99'
  101. Installing a crank kit in a 99 sls
  102. very quick temp spike then normal
  103. $150 made $1,000 worth of difference
  104. Question & Video of movement in secondary cam chain
  105. 1994 SLS no-start problems
  106. What is a good operating temperature?
  107. P0336 -Crankshaft Position Sensor 'A'
  108. How to tell which valve lash adjuster is faulty.
  109. Time for HG repair
  110. icm (ignition control module) problem keeps going out
  111. How to know if you have already entered some inserts in my engine?
  112. 2000 Northstar Strange Starter Issue?
  113. 99 Northstar rebuild questions
  114. Northstars sorted out yet?
  115. 4.6 white smoke issue
  116. Northstar and a turbo
  117. 2003 Deville misfire when warm
  118. 02 Deville 90k - low idle
  119. Need bolt torque specs: Flywheel, Torque Converter, Trans bolts.
  120. All of a sudden 2003 Deville developed a miss
  121. Northstar swap wiring harness question
  122. Please post a State & City guide to Northstar Head Gasket repair shops that you know
  123. replacing the oil pan in a 2000 deville
  124. Northstar - AIR valves ?
  125. 1994 N* Fuel Pressure Regulator
  126. New Northstar Engines
  127. Timing Chain Guide Adapt - 98+ to the old style engines
  128. 97' ETC check engine gives all O2 codes
  129. Northstar Overhaul Shop near Southern Maine, NH or MA
  130. Finished Replacement Front Engine Mount
  131. Studs officially shipping from the USA - thanks to JoeTahoe
  132. what to check when buying a northstar?
  133. Can I run 40W or 50w OIL on my NORTHSTAR 4.6? I live in very HOT WEATHER
  134. How to check for Hydrolock?
  135. 1999 Deville smokes at idle
  136. 2002 Deville - Knock sensor ?
  137. 96 Deville - Misfire on #8
  138. MAP sensor location critical ?
  139. 93-94 Northstar Water Pump Tensioner
  140. Please post recommended Northstar Repair Shops in Florida
  141. Cradle won't drop on 98 STS
  142. Replaced old radiator due to crack, overheats with new radiator.. PLEASE HELP
  143. 4 Bad Headgaskets
  144. What is involved in swapping a 93 Edo vin9 with a 95 viny (is it doable) ?????
  145. Swap Nightmare
  146. 2000 Deville possible overheat
  147. EVAP code P 0442
  148. Deville Northtar engine swap and PCM problems
  149. 04 Deville - engine upgrades
  150. 2001 Deville: Won't stay running while in drive
  151. Nortstar engine removal.
  152. Engine overheat and oil in coolant - 2001 STS
  153. What do you like about your Northstar powered vehicle?
  154. Is it possible to remove the cams and keep the timing chain tensioner in place?
  155. Low coolant sensor
  156. 1999 STS leaking coolant
  157. My story: HG headgasket failure
  158. LH2 Swap - Issue starting
  159. Oil/coolant mixing
  160. Throttle Position Sensor relearn ??
  161. 2000 & up Seville air intake resonator
  162. 2001 Seville engine overhaul questions
  163. 2000 Deville Fuel Pressure Specs
  164. 2002 Deville rough idle
  165. 99 eldorado 02 sensors
  166. Oil Pressure Sending Unit - SRX
  167. P0308 #8 Misfire issue... Replaced a lot, still have issue
  168. 99 STS hard cold start. No codes, fpr tests ok and fuel is 44 psi running
  169. A method to remove Crankshaft bolt without locking the flywheel or using the starter.
  170. 2002 Deville AIR pump Vacuum line Routing
  171. 1999 Deville Headgasket - head job or total overhaul ?
  172. 2001 deville engine making kocking noise
  173. 2002 Deville Overheating after Thermostat replacement
  174. Water pump drive pulley
  175. Special tool for Northstar water pump drive pulley
  176. Reliability of 2005 and beyond Northstar-powered cars
  177. Harmonic Balancer Torque
  178. Need advice on who to do a Northstar head job in the Huntsville Alabama area
  179. NGK Spark plugs & coolant level message - 2003 Deville
  180. Get a Free set of Main Studs with Purchase of Sure Grip Cylinder Head Stud Kit
  181. Developed an engine whine... what is it?
  182. Please help with PCM issue on 1993 Allante
  183. limp mode..now misfire
  184. Water cooled alternator - what years/models ?
  185. O2 Sensors in a Hot Rod Set-up
  186. 2002 Northstar WOT, performance brakes, CORSA ?
  187. 1996 and later Northstar performance chips
  188. Magnaflows on a 2003 Deville
  189. socket down camshaft drive chain slot
  190. coolant drip middle front lower
  191. 2005 STS Camshaft Sensor Location? V8 4.6 engine
  192. Pcm issue or camshaft issue any help
  193. Rail / Injector Leak Deville 99
  194. Northstar chips, cold air intakes, and spark plugs
  195. coil on plug ignition modules
  196. Mystery Check Engine Light
  197. Only starts with starting fluid - '97 SLS
  198. 99 STS head gasket repair [ in car]
  199. Problem with 97 Eldorado. P 0300...
  200. 02 Cooling building back pressure. Purge line clear.
  201. 1998 STS coolant change
  202. Mystery Black Wire
  203. Oil pressure
  204. 98 deville, uses oil? but how
  205. What year is my Northstar motor, and what cars will it drop into?
  206. trouble with spark from coil packs
  207. Replace and Reprogram PCM 2001 DTS
  208. 1995 SLS - Poor idle quality
  209. Oil Pan Gasket and Permatex UltraGray placement
  210. 98 Deville, changing the coolant, sealant tabs?
  211. 2000 series Northstar water pump will not come out
  212. Fuel pressure regulator
  213. 2003 Deville - exhaust steaming and coolant loss
  214. Can't remove Water Pump Drive pulley.. ever seen one that is stuck?
  215. Best Rear Main Seal Fix?
  216. Critique my coolant flush method
  217. Oil pressure light - 1998 Deville Northstar
  218. 1994 Eldorado thermostat replacement and coolant leak
  219. EGR Tubing
  220. '02 Seville was running fine, now it's not ?
  221. flex tube exhaust
  222. 01 Northstar Water in oil, high oil use, misses when cold.
  223. Coolant Leak Source? (pictures)
  224. When to reseal case halves?
  225. Look what I found in my engine!
  226. Puzzling Clattering Noise During Warm Startups
  227. HG's vs Pulled Threads
  228. Cat problems?
  229. Oil leaks on 1998 ElDorado
  230. 2000+ Intake Manifold on 1998 Northstar
  231. 2001 Deville - coolant boiling in reservoir
  232. Problem with my 1994 Eldorado engine - smoking
  233. code P 0171, P 0174 - solved
  234. Unable to communicate with the console cluster
  235. North Star Engine Disappointment (copy)
  236. SJ - API oil
  237. 97 ETC exhaust manifold fasterners.
  238. Fix the engine, (HG), replace the engine?
  239. Where does this go...?
  240. PCV Valve Elbow?
  241. Pics of my oil leaks
  242. combustion leak tester
  243. Anyone used Lucas Engine Stop Leak?
  244. Water pump issue, mostly? 1994 STS
  245. 98 Deville Water Pump Fail After Serpentine Belt Replaced
  246. Water Pump - Failing When Hot
  247. Oil Pan Leak?
  248. 2002 Deville misfire on Northstar
  249. I'm gonna do a block test today
  250. Car keeps overheating