: Northstar Engines and System Technical Discussion



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  1. 2001 STS Hooked up jumper cables wrong now car wont charge
  2. NP rebuilt engine
  3. 99 STS collapsed lifter?
  4. 2002 Deville remove bumper to remove engine cradle
  5. Northstar Performance - Jake's Studs
  6. Truth about Northstar Engine Failure?
  7. Carroll Cadillac now using TimeSerts with ARP studs.
  8. Bank 1, Bank 2 which is which
  9. Changed crankshaft position sensors, have oil leak.
  10. Can STS 2001 Northstar be converted to E85
  11. Setting timing on 96 STS
  12. Northstar headgasket repair parts
  13. Replacing Driver's Side Radiator Fan 1998 DeVille
  14. 2003 SLS -High idle and temperature after cleaning throttle body
  15. New Owner--1999 Deville - P0741
  16. 1997 Eldorado surge tank nipple cracked.
  17. New TPS now Code P085
  18. Vacuum leak
  19. Still Holding On to Bernadette... And don't Want to let go
  20. Oh so soft aluminum
  21. 98 DeVille Overheating, Coolant Leak
  22. 2000 ESC overheating
  23. Head Gasket Blown?
  24. LH2 heads on LD8 ?
  25. RE: Where is Coolant Purge Line?
  26. Engine cover gasket.
  27. 2000 northstar timing
  28. head gasket with engine in car still 99 sts
  29. Question about Northstar engines
  30. 2003 SLS Headgasket?
  31. Damaged block. Am I screwed?
  32. Blown Head Gasket ? - 1998 Northstar
  33. ECM Protocol for 2005 SRX with 4.6L LH2
  34. Can I drill the head studs holes deeper?
  35. HG in Fredericksburg, Virginia
  36. High Mile N* motors somehow cause catalytic converter failures? Need real experience
  37. P0300 code - Idle is perfectly smooth until engine warms up to 170 degrees
  38. Steel Seal? Yes or No
  39. 2003 Deville Headgasket & Cyl head time?
  40. Weird clicking noise on passenger side of motor by belt.
  41. Is it always the threads?
  42. 1998 Deville overheat ?
  43. '99 Plastic Fuel Rail
  44. Spark Plug & Wire Install - 1998 Deville misfires
  45. Performance camshafts for 2009 "STS" ?
  46. How To: 1998 DeVille Accessory Belt Tensioner Interference!
  47. 95 eldorado engine interchangeability
  48. transmission side pan removal
  49. 1998 DeVille: Reset Codes from Digital Panel
  50. 2004 Deville - ignition coil checks
  51. Overheating Issues 1997 STS
  52. Can a Bad Catalytic Converter Cause Overheating Problems?
  53. I'm back, after CCC studs installed two years ago a blown HG and loose stud WTH?
  54. Headgasket Repair Shops - Maryland
  55. 00+ Northstar Intake manifold...why so filthy inside?
  56. Super Star Studs...Anyone Ever Use Them?
  57. 1998 Deville Northstar head bolt hole repair ?
  58. Need info - Northstar engine rebuild/replace ?
  59. Head Gaskets?
  60. 1997 SLS Head Gasket Repair
  61. 2000 Deville Overheating
  62. Overheating problem - 1999 Deville
  63. 4T80E Transmission swapability
  64. 2002 Deville 220,000 miles. Want to change fuel pump.
  65. Eldorado strip times - Tuning thread
  66. 2001 DTS low oil pressure.
  67. 2003 DeVille oil pan gasket
  68. Longblock swap 2004 to 1995 4.6 FWD possible with 95 electronics?
  69. 94 Deville Concours - engine oil leak
  70. Sounds like a bearing loose - 1997 Deville
  71. Repair estimate quite high. 2000 Deville engine work
  72. Paging JoeTahoe
  73. What studs to get?
  74. Northstar in a Fiero?
  75. Overheating problem - Deville
  76. 1995 Deville ignition Coil Replacement
  77. 99 STS Head Gaskets going... Again
  78. 2000 ETC oil leak
  79. Low Oil Pressure and Coolant Temperature Messages On
  80. What kind of code reader?
  81. 99- and 00+ Interchangeability
  82. Strange banging noise - 2002 STS with Japanese-speaking DIC
  83. Tuneup - 1998 Northstar
  84. 03 Deville Motor mount R/I Hrs?
  85. 2004 Deville plenum replacement ?
  86. 1997 STS - Starting Issues and Rough Idle
  87. any help would be great tranny will not shift
  88. serpentine belt replacement
  89. Another overheating thread
  90. 2004 DHS - hard start, engine run problems
  91. Jake - Northstar Performance - your in-box is FULL -
  92. Arizona Northstar repair shop ?
  93. 98 Eldorado water cooled alternator doesn't charge when cold
  94. 1994 Eldorado - coolant leaks
  95. Coppery substance in coolant?
  96. problem with torque converter bolts
  97. 1999 Deville 4.6 Base misfire code
  98. Pre 2000 Northstar Crankshaft Position Sensors
  99. Replacing Coolant Crossover
  100. cooling system seal tablet
  101. 2002 STS Coolant Crossover Gaskets
  102. head gasket
  103. Suprise... Headgaskets
  104. Cost to replace oil pan gasket?
  105. Need help - considering a Northstar build for an ElCamino
  106. Dipstick reading
  107. North Star head bolt problem
  108. Spark plugs - 1997 Y Northstar
  109. first Cadillac questons about Northstar
  110. Head Bolt/stud question
  111. Just bought a 1995 Eldorado..was wondering what I should be looking at for maintenane
  112. 1999 SLS - apparent overheating ?
  113. Engine tap
  114. Compression And Leak Down Results.....Cam/Valve Timing Observation Discussion
  115. Why at the beginning of fuel rail and not end?
  116. 1999 DeVille coolant leak
  117. '97-won't start (fire)
  118. My Grandmothers Friend's 2000 STS has Misfire. She has a question
  119. P0507 Idle speed high after engine removal
  120. Engine block identification
  121. Cylinder Head Problems - 2005 DTS
  122. '99 Northstar head bolt torque values
  123. 1996 Deville - no fuel at the rail
  124. 2003 Deville idle air control valve
  125. 2000 Deville - dead batteries, no crank
  126. Engine cradle pulling down...
  127. 1996 Concours Oxygen Sensors
  128. 2000 - 2004 PCV piping question
  129. Help with a possible head gasket issue...2002 SLS
  130. Northstar 2001 Head Gasket Repair - Charlotte, North Carolina
  131. Northstar Engine Problems, were they ever corrected in production by GM??
  132. Anyone Ever Use A Company In Jersey Called Top Line Auto Care
  133. surge tank cap pressure
  134. Heater Pipe Adapter Part #?
  135. What Is This Gasket
  136. Northstar fuel fouling on Bank 2 good on Bank 1
  137. Thought I'd never buy another Northstar but...
  138. 2002 DTS transmission codes P 1860, P 0741
  139. Head gasket replacement
  140. Introduction - 1997 SLS with problems
  141. engine swap 2004 to a 1997 deville
  142. Northstar Engine Build Center, Batavia, NY - Northstar Performance LLC
  143. Snapped Main Bearing Bolts
  144. Head gasket question
  145. '97 DeVille NorthStar location of oil pressure switch?
  146. 2005 STS - Northstar longevity
  147. Cam Removal
  148. 2002 STS More Horsepower (Solid & Safe)
  149. Manifold over pressure valve - 1996 Northstar
  150. 2005 Deville 48k mi rough idle in morning. Thinking it could be HG issue.
  151. Not ready to give up - 1997 VIN Y Deville engine work
  152. 1999 STS Losing Coolant Possible Head Gasket
  153. Northstar wine
  154. Northstar Performance - officially offering custom PCM tuning January 2015
  155. Fuel rail and injector work on 2002 Deville
  156. Northstar VIN 9 - 2002 - engine exhaust work
  157. oil in coolant-'99 deville
  158. Northstar using excessive oil
  159. 2002 Deville AIR pump cover replacement
  160. 2002 Northstar VIN Y>9 cam swap and P/N questions - cam TSB
  161. 97 deville Help with rear coolant leak
  162. Boost and engine management - 1997 Eldorado base
  163. Cam cover bolts loose
  164. Possible HG leak in '01 SLS
  165. Upper front coolant pipe- 2000 ESC
  166. Northstar Motor Swap - 2008 into 2001 car
  167. Weird oil leak - 2002 Deville
  168. 02 Deville base different color valve covers?
  169. Northstar flexplate bolt circle question
  170. LH2 swap into another car ; questions about the northstar and computer
  171. Northstar rebuild 01 eldo
  172. No acceleration... 2003 Deville
  173. 2000 Deville misfire cylinders 1 and 2
  174. Should this come off easily?
  175. Northstar exercise and driving style
  176. 2003 Deville starter motor location
  177. 1993 4.6L Northstar engine swap into hotrod project.
  178. Whining noise at startup - 2001 Eldorado
  179. Rough idle 99'
  180. Installing a crank kit in a 99 sls
  181. very quick temp spike then normal
  182. $150 made $1,000 worth of difference
  183. Question & Video of movement in secondary cam chain
  184. 1994 SLS no-start problems
  185. What is a good operating temperature?
  186. P0336 -Crankshaft Position Sensor 'A'
  187. How to tell which valve lash adjuster is faulty.
  188. Time for HG repair
  189. icm (ignition control module) problem keeps going out
  190. How to know if you have already entered some inserts in my engine?
  191. 2000 Northstar Strange Starter Issue?
  192. 99 Northstar rebuild questions
  193. Northstars sorted out yet?
  194. 4.6 white smoke issue
  195. Northstar and a turbo
  196. 2003 Deville misfire when warm
  197. 02 Deville 90k - low idle
  198. Need bolt torque specs: Flywheel, Torque Converter, Trans bolts.
  199. All of a sudden 2003 Deville developed a miss
  200. Northstar swap wiring harness question
  201. Any shops that know the N* near Ft. Walton Beach,FL ?
  202. replacing the oil pan in a 2000 deville
  203. Northstar - AIR valves ?
  204. 1994 N* Fuel Pressure Regulator
  205. New Northstar Engines
  206. Timing Chain Guide Adapt - 98+ to the old style engines
  207. 97' ETC check engine gives all O2 codes
  208. Northstar Overhaul Shop near Southern Maine, NH or MA
  209. Finished Replacement Front Engine Mount
  210. Studs officially shipping from the USA - thanks to JoeTahoe
  211. what to check when buying a northstar?
  212. Can I run 40W or 50w OIL on my NORTHSTAR 4.6? I live in very HOT WEATHER
  213. How to check for Hydrolock?
  214. 1999 Deville smokes at idle
  215. 2002 Deville - Knock sensor ?
  216. 96 Deville - Misfire on #8
  217. MAP sensor location critical ?
  218. 93-94 Northstar Water Pump Tensioner
  219. Please post recommended Northstar Repair Shops in Florida
  220. Cradle won't drop on 98 STS
  221. Replaced old radiator due to crack, overheats with new radiator.. PLEASE HELP
  222. 4 Bad Headgaskets
  223. What is involved in swapping a 93 Edo vin9 with a 95 viny (is it doable) ?????
  224. Swap Nightmare
  225. 2000 Deville possible overheat
  226. EVAP code P 0442
  227. Deville Northtar engine swap and PCM problems
  228. 04 Deville - engine upgrades
  229. 2001 Deville: Won't stay running while in drive
  230. Nortstar engine removal.
  231. Engine overheat and oil in coolant - 2001 STS
  232. What do you like about your Northstar powered vehicle?
  233. Is it possible to remove the cams and keep the timing chain tensioner in place?
  234. Low coolant sensor
  235. 1999 STS leaking coolant
  236. My story: HG headgasket failure
  237. LH2 Swap - Issue starting
  238. Oil/coolant mixing
  239. Throttle Position Sensor relearn ??
  240. 2000 & up Seville air intake resonator
  241. 2001 Seville engine overhaul questions
  242. 2000 Deville Fuel Pressure Specs
  243. 2002 Deville rough idle
  244. 99 eldorado 02 sensors
  245. Oil Pressure Sending Unit - SRX
  246. P0308 #8 Misfire issue... Replaced a lot, still have issue
  247. 99 STS hard cold start. No codes, fpr tests ok and fuel is 44 psi running
  248. A method to remove Crankshaft bolt without locking the flywheel or using the starter.
  249. 2002 Deville AIR pump Vacuum line Routing
  250. 1999 Deville Headgasket - head job or total overhaul ?