: Northstar Engines and System Technical Discussion



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