: Northstar Engines and System Technical Discussion



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  1. Engine cover gasket.
  2. 2000 northstar timing
  3. head gasket with engine in car still 99 sts
  4. Question about Northstar engines
  5. 2003 SLS Headgasket?
  6. Damaged block. Am I screwed?
  7. Blown Head Gasket ? - 1998 Northstar
  8. ECM Protocol for 2005 SRX with 4.6L LH2
  9. Can I drill the head studs holes deeper?
  10. HG in Fredericksburg, Virginia
  11. High Mile N* motors somehow cause catalytic converter failures? Need real experience
  12. P0300 code - Idle is perfectly smooth until engine warms up to 170 degrees
  13. Steel Seal? Yes or No
  14. Weird clicking noise on passenger side of motor by belt.
  15. Is it always the threads?
  16. 1998 Deville overheat ?
  17. '99 Plastic Fuel Rail
  18. Spark Plug & Wire Install - 1998 Deville misfires
  19. Performance camshafts for 2009 "STS" ?
  20. How To: 1998 DeVille Accessory Belt Tensioner Interference!
  21. 95 eldorado engine interchangeability
  22. transmission side pan removal
  23. 1998 DeVille: Reset Codes from Digital Panel
  24. 2004 Deville - ignition coil checks
  25. Overheating Issues 1997 STS
  26. Can a Bad Catalytic Converter Cause Overheating Problems?
  27. I'm back, after CCC studs installed two years ago a blown HG and loose stud WTH?
  28. Headgasket Repair Shops - Maryland
  29. 00+ Northstar Intake manifold...why so filthy inside?
  30. Super Star Studs...Anyone Ever Use Them?
  31. 1998 Deville Northstar head bolt hole repair ?
  32. Need info - Northstar engine rebuild/replace ?
  33. Head Gaskets?
  34. 1997 SLS Head Gasket Repair
  35. 2000 Deville Overheating
  36. Overheating problem - 1999 Deville
  37. 4T80E Transmission swapability
  38. 2002 Deville 220,000 miles. Want to change fuel pump.
  39. Eldorado strip times - Tuning thread
  40. 2001 DTS low oil pressure.
  41. 2003 DeVille oil pan gasket
  42. Longblock swap 2004 to 1995 4.6 FWD possible with 95 electronics?
  43. 94 Deville Concours - engine oil leak
  44. Sounds like a bearing loose - 1997 Deville
  45. Repair estimate quite high. 2000 Deville engine work
  46. Paging JoeTahoe
  47. What studs to get?
  48. Northstar in a Fiero?
  49. Overheating problem - Deville
  50. 1995 Deville ignition Coil Replacement
  51. 99 STS Head Gaskets going... Again
  52. 2000 ETC oil leak
  53. Low Oil Pressure and Coolant Temperature Messages On
  54. What kind of code reader?
  55. 99- and 00+ Interchangeability
  56. Strange banging noise - 2002 STS with Japanese-speaking DIC
  57. Tuneup - 1998 Northstar
  58. 03 Deville Motor mount R/I Hrs?
  59. 2004 Deville plenum replacement ?
  60. 1997 STS - Starting Issues and Rough Idle
  61. any help would be great tranny will not shift
  62. serpentine belt replacement
  63. Another overheating thread
  64. 2004 DHS - hard start, engine run problems
  65. Jake - Northstar Performance - your in-box is FULL -
  66. Arizona Northstar repair shop ?
  67. 98 Eldorado water cooled alternator doesn't charge when cold
  68. 1994 Eldorado - coolant leaks
  69. Coppery substance in coolant?
  70. problem with torque converter bolts
  71. 1999 Deville 4.6 Base misfire code
  72. Pre 2000 Northstar Crankshaft Position Sensors
  73. Replacing Coolant Crossover
  74. cooling system seal tablet
  75. 2002 STS Coolant Crossover Gaskets
  76. head gasket
  77. Suprise... Headgaskets
  78. Cost to replace oil pan gasket?
  79. Need help - considering a Northstar build for an ElCamino
  80. Dipstick reading
  81. North Star head bolt problem
  82. Spark plugs - 1997 Y Northstar
  83. first Cadillac questons about Northstar
  84. Head Bolt/stud question
  85. Just bought a 1995 Eldorado..was wondering what I should be looking at for maintenane
  86. 1999 SLS - apparent overheating ?
  87. Engine tap
  88. Compression And Leak Down Results.....Cam/Valve Timing Observation Discussion
  89. Why at the beginning of fuel rail and not end?
  90. 1999 DeVille coolant leak
  91. '97-won't start (fire)
  92. My Grandmothers Friend's 2000 STS has Misfire. She has a question
  93. P0507 Idle speed high after engine removal
  94. Engine block identification
  95. Cylinder Head Problems - 2005 DTS
  96. '99 Northstar head bolt torque values
  97. 1996 Deville - no fuel at the rail
  98. 2003 Deville idle air control valve
  99. 2000 Deville - dead batteries, no crank
  100. Engine cradle pulling down...
  101. 1996 Concours Oxygen Sensors
  102. 2000 - 2004 PCV piping question
  103. Help with a possible head gasket issue...2002 SLS
  104. Northstar 2001 Head Gasket Repair - Charlotte, North Carolina
  105. Northstar Engine Problems, were they ever corrected in production by GM??
  106. Anyone Ever Use A Company In Jersey Called Top Line Auto Care
  107. surge tank cap pressure
  108. Heater Pipe Adapter Part #?
  109. What Is This Gasket
  110. Northstar fuel fouling on Bank 2 good on Bank 1
  111. Thought I'd never buy another Northstar but...
  112. 2002 DTS transmission codes P 1860, P 0741
  113. Head gasket replacement
  114. Introduction - 1997 SLS with problems
  115. engine swap 2004 to a 1997 deville
  116. Northstar Engine Build Center, Batavia, NY - Northstar Performance LLC
  117. Snapped Main Bearing Bolts
  118. Head gasket question
  119. '97 DeVille NorthStar location of oil pressure switch?
  120. 2005 STS - Northstar longevity
  121. Cam Removal
  122. 2002 STS More Horsepower (Solid & Safe)
  123. Manifold over pressure valve - 1996 Northstar
  124. 2005 Deville 48k mi rough idle in morning. Thinking it could be HG issue.
  125. Not ready to give up - 1997 VIN Y Deville engine work
  126. 1999 STS Losing Coolant Possible Head Gasket
  127. Northstar wine
  128. Northstar Performance - officially offering custom PCM tuning January 2015
  129. Fuel rail and injector work on 2002 Deville
  130. Northstar VIN 9 - 2002 - engine exhaust work
  131. oil in coolant-'99 deville
  132. Northstar using excessive oil
  133. 2002 Deville AIR pump cover replacement
  134. 2002 Northstar VIN Y>9 cam swap and P/N questions - cam TSB
  135. 97 deville Help with rear coolant leak
  136. Boost and engine management - 1997 Eldorado base
  137. Cam cover bolts loose
  138. Possible HG leak in '01 SLS
  139. Upper front coolant pipe- 2000 ESC
  140. Northstar Motor Swap - 2008 into 2001 car
  141. Weird oil leak - 2002 Deville
  142. 02 Deville base different color valve covers?
  143. Northstar flexplate bolt circle question
  144. LH2 swap into another car ; questions about the northstar and computer
  145. Northstar rebuild 01 eldo
  146. No acceleration... 2003 Deville
  147. 2000 Deville misfire cylinders 1 and 2
  148. Should this come off easily?
  149. Northstar exercise and driving style
  150. 2003 Deville starter motor location
  151. 1993 4.6L Northstar engine swap into hotrod project.
  152. Whining noise at startup - 2001 Eldorado
  153. Rough idle 99'
  154. Installing a crank kit in a 99 sls
  155. very quick temp spike then normal
  156. $150 made $1,000 worth of difference
  157. Question & Video of movement in secondary cam chain
  158. 1994 SLS no-start problems
  159. What is a good operating temperature?
  160. P0336 -Crankshaft Position Sensor 'A'
  161. How to tell which valve lash adjuster is faulty.
  162. Time for HG repair
  163. icm (ignition control module) problem keeps going out
  164. How to know if you have already entered some inserts in my engine?
  165. 2000 Northstar Strange Starter Issue?
  166. 99 Northstar rebuild questions
  167. Northstars sorted out yet?
  168. 4.6 white smoke issue
  169. Northstar and a turbo
  170. 2003 Deville misfire when warm
  171. 02 Deville 90k - low idle
  172. Need bolt torque specs: Flywheel, Torque Converter, Trans bolts.
  173. All of a sudden 2003 Deville developed a miss
  174. Northstar swap wiring harness question
  175. Any shops that know the N* near Ft. Walton Beach,FL ?
  176. replacing the oil pan in a 2000 deville
  177. Northstar - AIR valves ?
  178. 1994 N* Fuel Pressure Regulator
  179. New Northstar Engines
  180. Timing Chain Guide Adapt - 98+ to the old style engines
  181. 97' ETC check engine gives all O2 codes
  182. Northstar Overhaul Shop near Southern Maine, NH or MA
  183. Finished Replacement Front Engine Mount
  184. Studs officially shipping from the USA - thanks to JoeTahoe
  185. what to check when buying a northstar?
  186. Can I run 40W or 50w OIL on my NORTHSTAR 4.6? I live in very HOT WEATHER
  187. How to check for Hydrolock?
  188. 1999 Deville smokes at idle
  189. 2002 Deville - Knock sensor ?
  190. 96 Deville - Misfire on #8
  191. MAP sensor location critical ?
  192. 93-94 Northstar Water Pump Tensioner
  193. Please post recommended Northstar Repair Shops in Florida
  194. Cradle won't drop on 98 STS
  195. Replaced old radiator due to crack, overheats with new radiator.. PLEASE HELP
  196. 4 Bad Headgaskets
  197. What is involved in swapping a 93 Edo vin9 with a 95 viny (is it doable) ?????
  198. Swap Nightmare
  199. 2000 Deville possible overheat
  200. EVAP code P 0442
  201. Deville Northtar engine swap and PCM problems
  202. 04 Deville - engine upgrades
  203. 2001 Deville: Won't stay running while in drive
  204. Nortstar engine removal.
  205. Engine overheat and oil in coolant - 2001 STS
  206. What do you like about your Northstar powered vehicle?
  207. Is it possible to remove the cams and keep the timing chain tensioner in place?
  208. Low coolant sensor
  209. 1999 STS leaking coolant
  210. My story: HG headgasket failure
  211. LH2 Swap - Issue starting
  212. Oil/coolant mixing
  213. Throttle Position Sensor relearn ??
  214. 2000 & up Seville air intake resonator
  215. 2001 Seville engine overhaul questions
  216. 2000 Deville Fuel Pressure Specs
  217. 2002 Deville rough idle
  218. 99 eldorado 02 sensors
  219. Oil Pressure Sending Unit - SRX
  220. P0308 #8 Misfire issue... Replaced a lot, still have issue
  221. 99 STS hard cold start. No codes, fpr tests ok and fuel is 44 psi running
  222. A method to remove Crankshaft bolt without locking the flywheel or using the starter.
  223. 2002 Deville AIR pump Vacuum line Routing
  224. 1999 Deville Headgasket - head job or total overhaul ?
  225. 2001 deville engine making kocking noise
  226. 2002 Deville Overheating after Thermostat replacement
  227. Water pump drive pulley
  228. Special tool for Northstar water pump drive pulley
  229. Reliability of 2005 and beyond Northstar-powered cars
  230. Harmonic Balancer Torque
  231. Need advice on who to do a Northstar head job in the Huntsville Alabama area
  232. NGK Spark plugs & coolant level message - 2003 Deville
  233. Get a Free set of Main Studs with Purchase of Sure Grip Cylinder Head Stud Kit
  234. Developed an engine whine... what is it?
  235. Please help with PCM issue on 1993 Allante
  236. limp mode..now misfire
  237. Water cooled alternator - what years/models ?
  238. O2 Sensors in a Hot Rod Set-up
  239. 2002 Northstar WOT, performance brakes, CORSA ?
  240. 1996 and later Northstar performance chips
  241. Magnaflows on a 2003 Deville
  242. socket down camshaft drive chain slot
  243. coolant drip middle front lower
  244. 2005 STS Camshaft Sensor Location? V8 4.6 engine
  245. Pcm issue or camshaft issue any help
  246. Rail / Injector Leak Deville 99
  247. Northstar chips, cold air intakes, and spark plugs
  248. coil on plug ignition modules
  249. Mystery Check Engine Light
  250. Only starts with starting fluid - '97 SLS