: Northstar Engines and System Technical Discussion



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  1. 96 SLS Head Bolts
  2. Motor mounts
  3. complete swap
  4. Motor drags... won't start
  5. Stop engine low oil pressure
  6. Northstar water pump replacement
  7. Right side exhaust manifold removal on 1995 Seville STS
  8. Problem with headbolts on HG repair
  9. 2001 STS Hooked up jumper cables wrong now car wont charge
  10. NP rebuilt engine
  11. 99 STS collapsed lifter?
  12. 2002 Deville remove bumper to remove engine cradle
  13. Northstar Performance - Jake's Studs
  14. Truth about Northstar Engine Failure?
  15. Bank 1, Bank 2 which is which
  16. Changed crankshaft position sensors, have oil leak.
  17. Can STS 2001 Northstar be converted to E85
  18. Setting timing on 96 STS
  19. Northstar headgasket repair parts
  20. Replacing Driver's Side Radiator Fan 1998 DeVille
  21. 2003 SLS -High idle and temperature after cleaning throttle body
  22. New Owner--1999 Deville - P0741
  23. 1997 Eldorado surge tank nipple cracked.
  24. New TPS now Code P085
  25. Vacuum leak
  26. Still Holding On to Bernadette... And don't Want to let go
  27. Oh so soft aluminum
  28. 98 DeVille Overheating, Coolant Leak
  29. 2000 ESC overheating
  30. Head Gasket Blown?
  31. LH2 heads on LD8 ?
  32. RE: Where is Coolant Purge Line?
  33. Engine cover gasket.
  34. 2000 northstar timing
  35. head gasket with engine in car still 99 sts
  36. Question about Northstar engines
  37. 2003 SLS Headgasket?
  38. Damaged block. Am I screwed?
  39. Blown Head Gasket ? - 1998 Northstar
  40. ECM Protocol for 2005 SRX with 4.6L LH2
  41. Can I drill the head studs holes deeper?
  42. HG in Fredericksburg, Virginia
  43. High Mile N* motors somehow cause catalytic converter failures? Need real experience
  44. 1998 DeVille/Northstar engine problems and head gasket fix
  45. P0300 code - Idle is perfectly smooth until engine warms up to 170 degrees
  46. Steel Seal? Yes or No
  47. 2003 Deville Headgasket & Cyl head time?
  48. Weird clicking noise on passenger side of motor by belt.
  49. Is it always the threads?
  50. 1998 Deville overheat ?
  51. '99 Plastic Fuel Rail
  52. Spark Plug & Wire Install - 1998 Deville misfires
  53. Performance camshafts for 2009 "STS" ?
  54. How To: 1998 DeVille Accessory Belt Tensioner Interference!
  55. 95 eldorado engine interchangeability
  56. transmission side pan removal
  57. 1998 DeVille: Reset Codes from Digital Panel
  58. 2004 Deville - ignition coil checks
  59. Overheating Issues 1997 STS
  60. Can a Bad Catalytic Converter Cause Overheating Problems?
  61. I'm back, after CCC studs installed two years ago a blown HG and loose stud WTH?
  62. Headgasket Repair Shops - Maryland
  63. 00+ Northstar Intake manifold...why so filthy inside?
  64. Super Star Studs...Anyone Ever Use Them?
  65. 1998 Deville Northstar head bolt hole repair ?
  66. Need info - Northstar engine rebuild/replace ?
  67. Head Gaskets?
  68. 1997 SLS Head Gasket Repair
  69. 2000 Deville Overheating
  70. Overheating problem - 1999 Deville
  71. 4T80E Transmission swapability
  72. 2002 Deville 220,000 miles. Want to change fuel pump.
  73. Eldorado strip times - Tuning thread
  74. 2001 DTS low oil pressure.
  75. 2003 DeVille oil pan gasket
  76. Longblock swap 2004 to 1995 4.6 FWD possible with 95 electronics?
  77. 94 Deville Concours - engine oil leak
  78. Sounds like a bearing loose - 1997 Deville
  79. Repair estimate quite high. 2000 Deville engine work
  80. Paging JoeTahoe
  81. What studs to get?
  82. Northstar in a Fiero?
  83. Overheating problem - Deville
  84. 1995 Deville ignition Coil Replacement
  85. 99 STS Head Gaskets going... Again
  86. 2000 ETC oil leak
  87. Low Oil Pressure and Coolant Temperature Messages On
  88. What kind of code reader?
  89. 99- and 00+ Interchangeability
  90. Strange banging noise - 2002 STS with Japanese-speaking DIC
  91. Tuneup - 1998 Northstar
  92. 03 Deville Motor mount R/I Hrs?
  93. 2004 Deville plenum replacement ?
  94. 1997 STS - Starting Issues and Rough Idle
  95. any help would be great tranny will not shift
  96. serpentine belt replacement
  97. Another overheating thread
  98. 2004 DHS - hard start, engine run problems
  99. Jake - Northstar Performance - your in-box is FULL -
  100. Arizona Northstar repair shop ?
  101. 98 Eldorado water cooled alternator doesn't charge when cold
  102. 1994 Eldorado - coolant leaks
  103. Coppery substance in coolant?
  104. problem with torque converter bolts
  105. 1999 Deville 4.6 Base misfire code
  106. Pre 2000 Northstar Crankshaft Position Sensors
  107. Replacing Coolant Crossover
  108. cooling system seal tablet
  109. 2002 STS Coolant Crossover Gaskets
  110. head gasket
  111. Suprise... Headgaskets
  112. Cost to replace oil pan gasket?
  113. Need help - considering a Northstar build for an ElCamino
  114. Dipstick reading
  115. North Star head bolt problem
  116. Spark plugs - 1997 Y Northstar
  117. first Cadillac questons about Northstar
  118. Head Bolt/stud question
  119. Just bought a 1995 Eldorado..was wondering what I should be looking at for maintenane
  120. 1999 SLS - apparent overheating ?
  121. Engine tap
  122. Compression And Leak Down Results.....Cam/Valve Timing Observation Discussion
  123. Why at the beginning of fuel rail and not end?
  124. 1999 DeVille coolant leak
  125. '97-won't start (fire)
  126. My Grandmothers Friend's 2000 STS has Misfire. She has a question
  127. P0507 Idle speed high after engine removal
  128. Engine block identification
  129. Cylinder Head Problems - 2005 DTS
  130. '99 Northstar head bolt torque values
  131. 1996 Deville - no fuel at the rail
  132. 2003 Deville idle air control valve
  133. 2000 Deville - dead batteries, no crank
  134. Engine cradle pulling down...
  135. 1996 Concours Oxygen Sensors
  136. 2000 - 2004 PCV piping question
  137. Help with a possible head gasket issue...2002 SLS
  138. Northstar 2001 Head Gasket Repair - Charlotte, North Carolina
  139. Northstar Engine Problems, were they ever corrected in production by GM??
  140. Anyone Ever Use A Company In Jersey Called Top Line Auto Care
  141. surge tank cap pressure
  142. Heater Pipe Adapter Part #?
  143. What Is This Gasket
  144. Northstar fuel fouling on Bank 2 good on Bank 1
  145. Thought I'd never buy another Northstar but...
  146. 2002 DTS transmission codes P 1860, P 0741
  147. Head gasket replacement
  148. Introduction - 1997 SLS with problems
  149. engine swap 2004 to a 1997 deville
  150. Northstar Engine Build Center, Batavia, NY - Northstar Performance LLC
  151. Snapped Main Bearing Bolts
  152. Head gasket question
  153. '97 DeVille NorthStar location of oil pressure switch?
  154. 2005 STS - Northstar longevity
  155. Cam Removal
  156. 2002 STS More Horsepower (Solid & Safe)
  157. Manifold over pressure valve - 1996 Northstar
  158. 2005 Deville 48k mi rough idle in morning. Thinking it could be HG issue.
  159. Not ready to give up - 1997 VIN Y Deville engine work
  160. 1999 STS Losing Coolant Possible Head Gasket
  161. Northstar wine
  162. Northstar Performance - officially offering custom PCM tuning January 2015
  163. Fuel rail and injector work on 2002 Deville
  164. Northstar VIN 9 - 2002 - engine exhaust work
  165. oil in coolant-'99 deville
  166. Northstar using excessive oil
  167. 2002 Deville AIR pump cover replacement
  168. 2002 Northstar VIN Y>9 cam swap and P/N questions - cam TSB
  169. 97 deville Help with rear coolant leak
  170. Boost and engine management - 1997 Eldorado base
  171. Cam cover bolts loose
  172. Possible HG leak in '01 SLS
  173. Upper front coolant pipe- 2000 ESC
  174. Northstar Motor Swap - 2008 into 2001 car
  175. Weird oil leak - 2002 Deville
  176. 02 Deville base different color valve covers?
  177. Northstar flexplate bolt circle question
  178. LH2 swap into another car ; questions about the northstar and computer
  179. Northstar rebuild 01 eldo
  180. No acceleration... 2003 Deville
  181. 2000 Deville misfire cylinders 1 and 2
  182. Should this come off easily?
  183. Northstar exercise and driving style
  184. 2003 Deville starter motor location
  185. 1993 4.6L Northstar engine swap into hotrod project.
  186. Whining noise at startup - 2001 Eldorado
  187. Rough idle 99'
  188. Installing a crank kit in a 99 sls
  189. very quick temp spike then normal
  190. $150 made $1,000 worth of difference
  191. Question & Video of movement in secondary cam chain
  192. 1994 SLS no-start problems
  193. What is a good operating temperature?
  194. P0336 -Crankshaft Position Sensor 'A'
  195. How to tell which valve lash adjuster is faulty.
  196. Time for HG repair
  197. icm (ignition control module) problem keeps going out
  198. How to know if you have already entered some inserts in my engine?
  199. 2000 Northstar Strange Starter Issue?
  200. 99 Northstar rebuild questions
  201. Northstars sorted out yet?
  202. 4.6 white smoke issue
  203. Northstar and a turbo
  204. 2003 Deville misfire when warm
  205. 02 Deville 90k - low idle
  206. Need bolt torque specs: Flywheel, Torque Converter, Trans bolts.
  207. All of a sudden 2003 Deville developed a miss
  208. Northstar swap wiring harness question
  209. Please post a State & City guide to Northstar Head Gasket repair shops that you know
  210. replacing the oil pan in a 2000 deville
  211. Northstar - AIR valves ?
  212. 1994 N* Fuel Pressure Regulator
  213. New Northstar Engines
  214. Timing Chain Guide Adapt - 98+ to the old style engines
  215. 97' ETC check engine gives all O2 codes
  216. Northstar Overhaul Shop near Southern Maine, NH or MA
  217. Finished Replacement Front Engine Mount
  218. Studs officially shipping from the USA - thanks to JoeTahoe
  219. what to check when buying a northstar?
  220. Can I run 40W or 50w OIL on my NORTHSTAR 4.6? I live in very HOT WEATHER
  221. How to check for Hydrolock?
  222. 1999 Deville smokes at idle
  223. 2002 Deville - Knock sensor ?
  224. 96 Deville - Misfire on #8
  225. MAP sensor location critical ?
  226. 93-94 Northstar Water Pump Tensioner
  227. Please post recommended Northstar Repair Shops in Florida
  228. Cradle won't drop on 98 STS
  229. Replaced old radiator due to crack, overheats with new radiator.. PLEASE HELP
  230. 4 Bad Headgaskets
  231. What is involved in swapping a 93 Edo vin9 with a 95 viny (is it doable) ?????
  232. Swap Nightmare
  233. 2000 Deville possible overheat
  234. EVAP code P 0442
  235. Deville Northtar engine swap and PCM problems
  236. 04 Deville - engine upgrades
  237. 2001 Deville: Won't stay running while in drive
  238. Nortstar engine removal.
  239. Engine overheat and oil in coolant - 2001 STS
  240. What do you like about your Northstar powered vehicle?
  241. Is it possible to remove the cams and keep the timing chain tensioner in place?
  242. Low coolant sensor
  243. 1999 STS leaking coolant
  244. My story: HG headgasket failure
  245. LH2 Swap - Issue starting
  246. Oil/coolant mixing
  247. Throttle Position Sensor relearn ??
  248. 2000 & up Seville air intake resonator
  249. 2001 Seville engine overhaul questions
  250. 2000 Deville Fuel Pressure Specs