: Northstar Engines and System Technical Discussion



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  1. Head Gaskets?
  2. 1997 SLS Head Gasket Repair
  3. 2000 Deville Overheating
  4. Overheating problem - 1999 Deville
  5. 4T80E Transmission swapability
  6. 2002 Deville 220,000 miles. Want to change fuel pump.
  7. Eldorado strip times - Tuning thread
  8. 2001 DTS low oil pressure.
  9. 2003 DeVille oil pan gasket
  10. Longblock swap 2004 to 1995 4.6 FWD possible with 95 electronics?
  11. 94 Deville Concours - engine oil leak
  12. Sounds like a bearing loose - 1997 Deville
  13. Repair estimate quite high. 2000 Deville engine work
  14. Paging JoeTahoe
  15. Head gasket bolt hole repair - 1998 Eldorado
  16. Northstar in a Fiero?
  17. Overheating problem - Deville
  18. 1995 Deville ignition Coil Replacement
  19. 99 STS Head Gaskets going... Again
  20. 2000 ETC oil leak
  21. Low Oil Pressure and Coolant Temperature Messages On
  22. What kind of code reader?
  23. 99- and 00+ Interchangeability
  24. Strange banging noise - 2002 STS with Japanese-speaking DIC
  25. Tuneup - 1998 Northstar
  26. 03 Deville Motor mount R/I Hrs?
  27. 2004 Deville plenum replacement ?
  28. 1997 STS - Starting Issues and Rough Idle
  29. any help would be great tranny will not shift
  30. serpentine belt replacement
  31. Another overheating thread
  32. 2004 DHS - hard start, engine run problems
  33. Jake - Northstar Performance - your in-box is FULL -
  34. Arizona Northstar repair shop ?
  35. 98 Eldorado water cooled alternator doesn't charge when cold
  36. 1994 Eldorado - coolant leaks
  37. Coppery substance in coolant?
  38. problem with torque converter bolts
  39. 1999 Deville 4.6 Base misfire code
  40. Pre 2000 Northstar Crankshaft Position Sensors
  41. Replacing Coolant Crossover
  42. cooling system seal tablet
  43. 2002 STS Coolant Crossover Gaskets
  44. head gasket
  45. Suprise... Headgaskets
  46. Cost to replace oil pan gasket?
  47. Need help - considering a Northstar build for an ElCamino
  48. Dipstick reading
  49. North Star head bolt problem
  50. Spark plugs - 1997 Y Northstar
  51. first Cadillac questons about Northstar
  52. Head Bolt/stud question
  53. Just bought a 1995 Eldorado..was wondering what I should be looking at for maintenane
  54. 1999 SLS - apparent overheating ?
  55. Engine tap
  56. Compression And Leak Down Results.....Cam/Valve Timing Observation Discussion
  57. Why at the beginning of fuel rail and not end?
  58. 1999 DeVille coolant leak
  59. '97-won't start (fire)
  60. My Grandmothers Friend's 2000 STS has Misfire. She has a question
  61. P0507 Idle speed high after engine removal
  62. Engine block identification
  63. Cylinder Head Problems - 2005 DTS
  64. '99 Northstar head bolt torque values
  65. 1996 Deville - no fuel at the rail
  66. 2003 Deville idle air control valve
  67. 2000 Deville - dead batteries, no crank
  68. Engine cradle pulling down...
  69. 1996 Concours Oxygen Sensors
  70. 2000 - 2004 PCV piping question
  71. Help with a possible head gasket issue...2002 SLS
  72. Northstar 2001 Head Gasket Repair - Charlotte, North Carolina
  73. Northstar Engine Problems, were they ever corrected in production by GM??
  74. Anyone Ever Use A Company In Jersey Called Top Line Auto Care
  75. surge tank cap pressure
  76. Heater Pipe Adapter Part #?
  77. What Is This Gasket
  78. Northstar fuel fouling on Bank 2 good on Bank 1
  79. Thought I'd never buy another Northstar but...
  80. 2002 DTS transmission codes P 1860, P 0741
  81. Head gasket replacement
  82. Introduction - 1997 SLS with problems
  83. engine swap 2004 to a 1997 deville
  84. Northstar Engine Build Center, Batavia, NY - Northstar Performance LLC
  85. Snapped Main Bearing Bolts
  86. Head gasket question
  87. '97 DeVille NorthStar location of oil pressure switch?
  88. 2005 STS - Northstar longevity
  89. Cam Removal
  90. 2002 STS More Horsepower (Solid & Safe)
  91. Manifold over pressure valve - 1996 Northstar
  92. 2005 Deville 48k mi rough idle in morning. Thinking it could be HG issue.
  93. Not ready to give up - 1997 VIN Y Deville engine work
  94. 1999 STS Losing Coolant Possible Head Gasket
  95. Northstar wine
  96. Northstar Performance - officially offering custom PCM tuning January 2015
  97. Fuel rail and injector work on 2002 Deville
  98. Northstar VIN 9 - 2002 - engine exhaust work
  99. oil in coolant-'99 deville
  100. Northstar using excessive oil
  101. 2002 Deville AIR pump cover replacement
  102. 2002 Northstar VIN Y>9 cam swap and P/N questions - cam TSB
  103. 97 deville Help with rear coolant leak
  104. Boost and engine management - 1997 Eldorado base
  105. Cam cover bolts loose
  106. Possible HG leak in '01 SLS
  107. Upper front coolant pipe- 2000 ESC
  108. Northstar Motor Swap - 2008 into 2001 car
  109. Weird oil leak - 2002 Deville
  110. 02 Deville base different color valve covers?
  111. Northstar flexplate bolt circle question
  112. LH2 swap into another car ; questions about the northstar and computer
  113. Northstar rebuild 01 eldo
  114. No acceleration... 2003 Deville
  115. 2000 Deville misfire cylinders 1 and 2
  116. Should this come off easily?
  117. Northstar exercise and driving style
  118. 2003 Deville starter motor location
  119. 1993 4.6L Northstar engine swap into hotrod project.
  120. Whining noise at startup - 2001 Eldorado
  121. Rough idle 99'
  122. Installing a crank kit in a 99 sls
  123. very quick temp spike then normal
  124. $150 made $1,000 worth of difference
  125. Question & Video of movement in secondary cam chain
  126. 1994 SLS no-start problems
  127. What is a good operating temperature?
  128. P0336 -Crankshaft Position Sensor 'A'
  129. How to tell which valve lash adjuster is faulty.
  130. Time for HG repair
  131. icm (ignition control module) problem keeps going out
  132. How to know if you have already entered some inserts in my engine?
  133. 2000 Northstar Strange Starter Issue?
  134. 99 Northstar rebuild questions
  135. Northstars sorted out yet?
  136. 4.6 white smoke issue
  137. Northstar and a turbo
  138. 2003 Deville misfire when warm
  139. 02 Deville 90k - low idle
  140. Need bolt torque specs: Flywheel, Torque Converter, Trans bolts.
  141. All of a sudden 2003 Deville developed a miss
  142. Northstar swap wiring harness question
  143. Any shops that know the N* near Ft. Walton Beach,FL ?
  144. replacing the oil pan in a 2000 deville
  145. Northstar - AIR valves ?
  146. 1994 N* Fuel Pressure Regulator
  147. New Northstar Engines
  148. Timing Chain Guide Adapt - 98+ to the old style engines
  149. 97' ETC check engine gives all O2 codes
  150. Northstar Overhaul Shop near Southern Maine, NH or MA
  151. Finished Replacement Front Engine Mount
  152. Studs officially shipping from the USA - thanks to JoeTahoe
  153. what to check when buying a northstar?
  154. Can I run 40W or 50w OIL on my NORTHSTAR 4.6? I live in very HOT WEATHER
  155. How to check for Hydrolock?
  156. 1999 Deville smokes at idle
  157. 2002 Deville - Knock sensor ?
  158. 96 Deville - Misfire on #8
  159. MAP sensor location critical ?
  160. 93-94 Northstar Water Pump Tensioner
  161. Please post recommended Northstar Repair Shops in Florida
  162. Cradle won't drop on 98 STS
  163. Replaced old radiator due to crack, overheats with new radiator.. PLEASE HELP
  164. 4 Bad Headgaskets
  165. What is involved in swapping a 93 Edo vin9 with a 95 viny (is it doable) ?????
  166. Swap Nightmare
  167. 2000 Deville possible overheat
  168. EVAP code P 0442
  169. Deville Northtar engine swap and PCM problems
  170. 04 Deville - engine upgrades
  171. 2001 Deville: Won't stay running while in drive
  172. Nortstar engine removal.
  173. Engine overheat and oil in coolant - 2001 STS
  174. What do you like about your Northstar powered vehicle?
  175. Is it possible to remove the cams and keep the timing chain tensioner in place?
  176. Low coolant sensor
  177. 1999 STS leaking coolant
  178. My story: HG headgasket failure
  179. LH2 Swap - Issue starting
  180. Oil/coolant mixing
  181. Throttle Position Sensor relearn ??
  182. 2000 & up Seville air intake resonator
  183. 2001 Seville engine overhaul questions
  184. 2000 Deville Fuel Pressure Specs
  185. 2002 Deville rough idle
  186. 99 eldorado 02 sensors
  187. Oil Pressure Sending Unit - SRX
  188. P0308 #8 Misfire issue... Replaced a lot, still have issue
  189. 99 STS hard cold start. No codes, fpr tests ok and fuel is 44 psi running
  190. A method to remove Crankshaft bolt without locking the flywheel or using the starter.
  191. 2002 Deville AIR pump Vacuum line Routing
  192. 1999 Deville Headgasket - head job or total overhaul ?
  193. 2001 deville engine making kocking noise
  194. 2002 Deville Overheating after Thermostat replacement
  195. Water pump drive pulley
  196. Special tool for Northstar water pump drive pulley
  197. Reliability of 2005 and beyond Northstar-powered cars
  198. Harmonic Balancer Torque
  199. Need advice on who to do a Northstar head job in the Huntsville Alabama area
  200. NGK Spark plugs & coolant level message - 2003 Deville
  201. Get a Free set of Main Studs with Purchase of Sure Grip Cylinder Head Stud Kit
  202. Developed an engine whine... what is it?
  203. Please help with PCM issue on 1993 Allante
  204. limp mode..now misfire
  205. Water cooled alternator - what years/models ?
  206. O2 Sensors in a Hot Rod Set-up
  207. 2002 Northstar WOT, performance brakes, CORSA ?
  208. 1996 and later Northstar performance chips
  209. Magnaflows on a 2003 Deville
  210. socket down camshaft drive chain slot
  211. coolant drip middle front lower
  212. 2005 STS Camshaft Sensor Location? V8 4.6 engine
  213. Pcm issue or camshaft issue any help
  214. Rail / Injector Leak Deville 99
  215. Northstar chips, cold air intakes, and spark plugs
  216. coil on plug ignition modules
  217. Mystery Check Engine Light
  218. Only starts with starting fluid - '97 SLS
  219. 99 STS head gasket repair [ in car]
  220. Problem with 97 Eldorado. P 0300...
  221. 02 Cooling building back pressure. Purge line clear.
  222. 1998 STS coolant change
  223. Mystery Black Wire
  224. Oil pressure
  225. 98 deville, uses oil? but how
  226. What year is my Northstar motor, and what cars will it drop into?
  227. trouble with spark from coil packs
  228. Replace and Reprogram PCM 2001 DTS
  229. 1995 SLS - Poor idle quality
  230. Oil Pan Gasket and Permatex UltraGray placement
  231. 98 Deville, changing the coolant, sealant tabs?
  232. 2000 series Northstar water pump will not come out
  233. Fuel pressure regulator
  234. 2003 Deville - exhaust steaming and coolant loss
  235. Can't remove Water Pump Drive pulley.. ever seen one that is stuck?
  236. Best Rear Main Seal Fix?
  237. Critique my coolant flush method
  238. Oil pressure light - 1998 Deville Northstar
  239. 1994 Eldorado thermostat replacement and coolant leak
  240. EGR Tubing
  241. '02 Seville was running fine, now it's not ?
  242. flex tube exhaust
  243. 01 Northstar Water in oil, high oil use, misses when cold.
  244. Coolant Leak Source? (pictures)
  245. When to reseal case halves?
  246. Look what I found in my engine!
  247. Puzzling Clattering Noise During Warm Startups
  248. HG's vs Pulled Threads
  249. Cat problems?
  250. Oil leaks on 1998 ElDorado