: Northstar Engines and System Technical Discussion



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