: Northstar Engines and System Technical Discussion



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  1. 1997 Eldorado surge tank nipple cracked.
  2. New TPS now Code P085
  3. Vacuum leak
  4. Still Holding On to Bernadette... And don't Want to let go
  5. Oh so soft aluminum
  6. 98 DeVille Overheating, Coolant Leak
  7. 2000 ESC overheating
  8. Head Gasket Blown?
  9. LH2 heads on LD8 ?
  10. RE: Where is Coolant Purge Line?
  11. Engine cover gasket.
  12. 2000 northstar timing
  13. head gasket with engine in car still 99 sts
  14. Question about Northstar engines
  15. 2003 SLS Headgasket?
  16. Damaged block. Am I screwed?
  17. Blown Head Gasket ? - 1998 Northstar
  18. ECM Protocol for 2005 SRX with 4.6L LH2
  19. Can I drill the head studs holes deeper?
  20. HG in Fredericksburg, Virginia
  21. High Mile N* motors somehow cause catalytic converter failures? Need real experience
  22. 1998 DeVille/Northstar engine problems and head gasket fix
  23. P0300 code - Idle is perfectly smooth until engine warms up to 170 degrees
  24. Steel Seal? Yes or No
  25. 2003 Deville Headgasket & Cyl head time?
  26. Weird clicking noise on passenger side of motor by belt.
  27. Is it always the threads?
  28. 1998 Deville overheat ?
  29. '99 Plastic Fuel Rail
  30. Spark Plug & Wire Install - 1998 Deville misfires
  31. Performance camshafts for 2009 "STS" ?
  32. How To: 1998 DeVille Accessory Belt Tensioner Interference!
  33. 95 eldorado engine interchangeability
  34. transmission side pan removal
  35. 1998 DeVille: Reset Codes from Digital Panel
  36. 2004 Deville - ignition coil checks
  37. Overheating Issues 1997 STS
  38. Can a Bad Catalytic Converter Cause Overheating Problems?
  39. I'm back, after CCC studs installed two years ago a blown HG and loose stud WTH?
  40. Headgasket Repair Shops - Maryland
  41. 00+ Northstar Intake manifold...why so filthy inside?
  42. Super Star Studs...Anyone Ever Use Them?
  43. 1998 Deville Northstar head bolt hole repair ?
  44. Need info - Northstar engine rebuild/replace ?
  45. Head Gaskets?
  46. 1997 SLS Head Gasket Repair
  47. 2000 Deville Overheating
  48. Overheating problem - 1999 Deville
  49. 4T80E Transmission swapability
  50. 2002 Deville 220,000 miles. Want to change fuel pump.
  51. Eldorado strip times - Tuning thread
  52. 2001 DTS low oil pressure.
  53. 2003 DeVille oil pan gasket
  54. Longblock swap 2004 to 1995 4.6 FWD possible with 95 electronics?
  55. 94 Deville Concours - engine oil leak
  56. Sounds like a bearing loose - 1997 Deville
  57. Repair estimate quite high. 2000 Deville engine work
  58. Paging JoeTahoe
  59. What studs to get?
  60. Northstar in a Fiero?
  61. Overheating problem - Deville
  62. 1995 Deville ignition Coil Replacement
  63. 99 STS Head Gaskets going... Again
  64. 2000 ETC oil leak
  65. Low Oil Pressure and Coolant Temperature Messages On
  66. What kind of code reader?
  67. 99- and 00+ Interchangeability
  68. Strange banging noise - 2002 STS with Japanese-speaking DIC
  69. Tuneup - 1998 Northstar
  70. 03 Deville Motor mount R/I Hrs?
  71. 2004 Deville plenum replacement ?
  72. 1997 STS - Starting Issues and Rough Idle
  73. any help would be great tranny will not shift
  74. serpentine belt replacement
  75. Another overheating thread
  76. 2004 DHS - hard start, engine run problems
  77. Jake - Northstar Performance - your in-box is FULL -
  78. Arizona Northstar repair shop ?
  79. 98 Eldorado water cooled alternator doesn't charge when cold
  80. 1994 Eldorado - coolant leaks
  81. Coppery substance in coolant?
  82. problem with torque converter bolts
  83. 1999 Deville 4.6 Base misfire code
  84. Pre 2000 Northstar Crankshaft Position Sensors
  85. Replacing Coolant Crossover
  86. cooling system seal tablet
  87. 2002 STS Coolant Crossover Gaskets
  88. head gasket
  89. Suprise... Headgaskets
  90. Cost to replace oil pan gasket?
  91. Need help - considering a Northstar build for an ElCamino
  92. Dipstick reading
  93. North Star head bolt problem
  94. Spark plugs - 1997 Y Northstar
  95. first Cadillac questons about Northstar
  96. Head Bolt/stud question
  97. Just bought a 1995 Eldorado..was wondering what I should be looking at for maintenane
  98. 1999 SLS - apparent overheating ?
  99. Engine tap
  100. Compression And Leak Down Results.....Cam/Valve Timing Observation Discussion
  101. Why at the beginning of fuel rail and not end?
  102. 1999 DeVille coolant leak
  103. '97-won't start (fire)
  104. My Grandmothers Friend's 2000 STS has Misfire. She has a question
  105. P0507 Idle speed high after engine removal
  106. Engine block identification
  107. Cylinder Head Problems - 2005 DTS
  108. '99 Northstar head bolt torque values
  109. 1996 Deville - no fuel at the rail
  110. 2003 Deville idle air control valve
  111. 2000 Deville - dead batteries, no crank
  112. Engine cradle pulling down...
  113. 1996 Concours Oxygen Sensors
  114. 2000 - 2004 PCV piping question
  115. Help with a possible head gasket issue...2002 SLS
  116. Northstar 2001 Head Gasket Repair - Charlotte, North Carolina
  117. Northstar Engine Problems, were they ever corrected in production by GM??
  118. Anyone Ever Use A Company In Jersey Called Top Line Auto Care
  119. surge tank cap pressure
  120. Heater Pipe Adapter Part #?
  121. What Is This Gasket
  122. Northstar fuel fouling on Bank 2 good on Bank 1
  123. Thought I'd never buy another Northstar but...
  124. 2002 DTS transmission codes P 1860, P 0741
  125. Head gasket replacement
  126. Introduction - 1997 SLS with problems
  127. engine swap 2004 to a 1997 deville
  128. Northstar Engine Build Center, Batavia, NY - Northstar Performance LLC
  129. Snapped Main Bearing Bolts
  130. Head gasket question
  131. '97 DeVille NorthStar location of oil pressure switch?
  132. 2005 STS - Northstar longevity
  133. Cam Removal
  134. 2002 STS More Horsepower (Solid & Safe)
  135. Manifold over pressure valve - 1996 Northstar
  136. 2005 Deville 48k mi rough idle in morning. Thinking it could be HG issue.
  137. Not ready to give up - 1997 VIN Y Deville engine work
  138. 1999 STS Losing Coolant Possible Head Gasket
  139. Northstar wine
  140. Northstar Performance - officially offering custom PCM tuning January 2015
  141. Fuel rail and injector work on 2002 Deville
  142. Northstar VIN 9 - 2002 - engine exhaust work
  143. oil in coolant-'99 deville
  144. Northstar using excessive oil
  145. 2002 Deville AIR pump cover replacement
  146. 2002 Northstar VIN Y>9 cam swap and P/N questions - cam TSB
  147. 97 deville Help with rear coolant leak
  148. Boost and engine management - 1997 Eldorado base
  149. Cam cover bolts loose
  150. Possible HG leak in '01 SLS
  151. Upper front coolant pipe- 2000 ESC
  152. Northstar Motor Swap - 2008 into 2001 car
  153. Weird oil leak - 2002 Deville
  154. 02 Deville base different color valve covers?
  155. Northstar flexplate bolt circle question
  156. LH2 swap into another car ; questions about the northstar and computer
  157. Northstar rebuild 01 eldo
  158. No acceleration... 2003 Deville
  159. 2000 Deville misfire cylinders 1 and 2
  160. Should this come off easily?
  161. Northstar exercise and driving style
  162. 2003 Deville starter motor location
  163. 1993 4.6L Northstar engine swap into hotrod project.
  164. Whining noise at startup - 2001 Eldorado
  165. Rough idle 99'
  166. Installing a crank kit in a 99 sls
  167. very quick temp spike then normal
  168. $150 made $1,000 worth of difference
  169. Question & Video of movement in secondary cam chain
  170. 1994 SLS no-start problems
  171. What is a good operating temperature?
  172. P0336 -Crankshaft Position Sensor 'A'
  173. How to tell which valve lash adjuster is faulty.
  174. Time for HG repair
  175. icm (ignition control module) problem keeps going out
  176. How to know if you have already entered some inserts in my engine?
  177. 2000 Northstar Strange Starter Issue?
  178. 99 Northstar rebuild questions
  179. Northstars sorted out yet?
  180. 4.6 white smoke issue
  181. Northstar and a turbo
  182. 2003 Deville misfire when warm
  183. 02 Deville 90k - low idle
  184. Need bolt torque specs: Flywheel, Torque Converter, Trans bolts.
  185. All of a sudden 2003 Deville developed a miss
  186. Northstar swap wiring harness question
  187. Please post a State & City guide to Northstar Head Gasket repair shops that you know
  188. replacing the oil pan in a 2000 deville
  189. Northstar - AIR valves ?
  190. 1994 N* Fuel Pressure Regulator
  191. New Northstar Engines
  192. Timing Chain Guide Adapt - 98+ to the old style engines
  193. 97' ETC check engine gives all O2 codes
  194. Northstar Overhaul Shop near Southern Maine, NH or MA
  195. Finished Replacement Front Engine Mount
  196. Studs officially shipping from the USA - thanks to JoeTahoe
  197. what to check when buying a northstar?
  198. Can I run 40W or 50w OIL on my NORTHSTAR 4.6? I live in very HOT WEATHER
  199. How to check for Hydrolock?
  200. 1999 Deville smokes at idle
  201. 2002 Deville - Knock sensor ?
  202. 96 Deville - Misfire on #8
  203. MAP sensor location critical ?
  204. 93-94 Northstar Water Pump Tensioner
  205. Please post recommended Northstar Repair Shops in Florida
  206. Cradle won't drop on 98 STS
  207. Replaced old radiator due to crack, overheats with new radiator.. PLEASE HELP
  208. 4 Bad Headgaskets
  209. What is involved in swapping a 93 Edo vin9 with a 95 viny (is it doable) ?????
  210. Swap Nightmare
  211. 2000 Deville possible overheat
  212. EVAP code P 0442
  213. Deville Northtar engine swap and PCM problems
  214. 04 Deville - engine upgrades
  215. 2001 Deville: Won't stay running while in drive
  216. Nortstar engine removal.
  217. Engine overheat and oil in coolant - 2001 STS
  218. What do you like about your Northstar powered vehicle?
  219. Is it possible to remove the cams and keep the timing chain tensioner in place?
  220. Low coolant sensor
  221. 1999 STS leaking coolant
  222. My story: HG headgasket failure
  223. LH2 Swap - Issue starting
  224. Oil/coolant mixing
  225. Throttle Position Sensor relearn ??
  226. 2000 & up Seville air intake resonator
  227. 2001 Seville engine overhaul questions
  228. 2000 Deville Fuel Pressure Specs
  229. 2002 Deville rough idle
  230. 99 eldorado 02 sensors
  231. Oil Pressure Sending Unit - SRX
  232. P0308 #8 Misfire issue... Replaced a lot, still have issue
  233. 99 STS hard cold start. No codes, fpr tests ok and fuel is 44 psi running
  234. A method to remove Crankshaft bolt without locking the flywheel or using the starter.
  235. 2002 Deville AIR pump Vacuum line Routing
  236. 1999 Deville Headgasket - head job or total overhaul ?
  237. 2001 deville engine making kocking noise
  238. 2002 Deville Overheating after Thermostat replacement
  239. Water pump drive pulley
  240. Special tool for Northstar water pump drive pulley
  241. Reliability of 2005 and beyond Northstar-powered cars
  242. Harmonic Balancer Torque
  243. Need advice on who to do a Northstar head job in the Huntsville Alabama area
  244. NGK Spark plugs & coolant level message - 2003 Deville
  245. Get a Free set of Main Studs with Purchase of Sure Grip Cylinder Head Stud Kit
  246. Developed an engine whine... what is it?
  247. Please help with PCM issue on 1993 Allante
  248. limp mode..now misfire
  249. Water cooled alternator - what years/models ?
  250. O2 Sensors in a Hot Rod Set-up