: Northstar Engines and System Technical Discussion



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  1. Swap Nightmare
  2. 2000 Deville possible overheat
  3. Who has their NORTHSTAR still running on original head gaskets
  4. EVAP code P 0442
  5. Deville Northtar engine swap and PCM problems
  6. 04 Deville - engine upgrades
  7. 2001 Deville: Won't stay running while in drive
  8. Nortstar engine removal.
  9. Engine overheat and oil in coolant - 2001 STS
  10. What do you like about your Northstar powered vehicle?
  11. Is it possible to remove the cams and keep the timing chain tensioner in place?
  12. Low coolant sensor
  13. 1999 STS leaking coolant
  14. My story: HG headgasket failure
  15. LH2 Swap - Issue starting
  16. Oil/coolant mixing
  17. Throttle Position Sensor relearn ??
  18. 2000 & up Seville air intake resonator
  19. 2000 Deville Fuel Pressure Specs
  20. 2002 Deville rough idle
  21. 99 eldorado 02 sensors
  22. Oil Pressure Sending Unit - SRX
  23. P0308 #8 Misfire issue... Replaced a lot, still have issue
  24. 99 STS hard cold start. No codes, fpr tests ok and fuel is 44 psi running
  25. A method to remove Crankshaft bolt without locking the flywheel or using the starter.
  26. 2002 Deville AIR pump Vacuum line Routing
  27. 1999 Deville Headgasket - head job or total overhaul ?
  28. 2001 deville engine making kocking noise
  29. 2002 Deville Overheating after Thermostat replacement
  30. Water pump drive pulley
  31. Special tool for Northstar water pump drive pulley
  32. Reliability of 2005 and beyond Northstar-powered cars
  33. Harmonic Balancer Torque
  34. Need advice on who to do a Northstar head job in the Huntsville Alabama area
  35. NGK Spark plugs & coolant level message - 2003 Deville
  36. Get a Free set of Main Studs with Purchase of Sure Grip Cylinder Head Stud Kit
  37. Developed an engine whine... what is it?
  38. Please help with PCM issue on 1993 Allante
  39. limp mode..now misfire
  40. Water cooled alternator - what years/models ?
  41. O2 Sensors in a Hot Rod Set-up
  42. 2002 Northstar WOT, performance brakes, CORSA ?
  43. 1996 and later Northstar performance chips
  44. Magnaflows on a 2003 Deville
  45. socket down camshaft drive chain slot
  46. coolant drip middle front lower
  47. 2005 STS Camshaft Sensor Location? V8 4.6 engine
  48. Pcm issue or camshaft issue any help
  49. Rail / Injector Leak Deville 99
  50. Northstar chips, cold air intakes, and spark plugs
  51. coil on plug ignition modules
  52. Mystery Check Engine Light
  53. Only starts with starting fluid-Help
  54. 99 STS head gasket repair [ in car]
  55. Problem with 97 Eldorado. P 0300...
  56. 02 Cooling building back pressure. Purge line clear.
  57. 1998 STS coolant change
  58. Mystery Black Wire
  59. Oil pressure
  60. 98 deville, uses oil? but how
  61. What year is my Northstar motor, and what cars will it drop into?
  62. trouble with spark from coil packs
  63. Replace and Reprogram PCM 2001 DTS
  64. 1995 SLS - Poor idle quality
  65. Oil Pan Gasket and Permatex UltraGray placement
  66. 98 Deville, changing the coolant, sealant tabs?
  67. 2000 Deville Water Pump will Not Come Out
  68. Fuel pressure regulator
  69. 2003 Deville - exhaust steaming and coolant loss
  70. Can't remove Water Pump Drive pulley.. ever seen one that is stuck?
  71. Best Rear Main Seal Fix?
  72. Critique my coolant flush method
  73. Oil pressure light - 1998 Deville Northstar
  74. 1994 Eldorado thermostat replacement and coolant leak
  75. EGR Tubing
  76. '02 Seville was running fine, now it's not ?
  77. flex tube exhaust
  78. 01 Northstar Water in oil, high oil use, misses when cold.
  79. Coolant Leak Source? (pictures)
  80. When to reseal case halves?
  81. Look what I found in my engine!
  82. Puzzling Clattering Noise During Warm Startups
  83. HG's vs Pulled Threads
  84. Cat problems?
  85. Oil leaks on 1998 ElDorado
  86. 2000+ Intake Manifold on 1998 Northstar
  87. 2001 Deville - coolant boiling in reservoir
  88. Problem with my 1994 Eldorado engine - smoking
  89. code P 0171, P 0174 - solved
  90. Unable to communicate with the console cluster
  91. North Star Engine Disappointment (copy)
  92. SJ - API oil
  93. 97 ETC exhaust manifold fasterners.
  94. Fix the engine, (HG), replace the engine?
  95. Where does this go...?
  96. PCV Valve Elbow?
  97. Pics of my oil leaks
  98. combustion leak tester
  99. Anyone used Lucas Engine Stop Leak?
  100. Water pump issue, mostly? 1994 STS
  101. 98 Deville Water Pump Fail After Serpentine Belt Replaced
  102. Water Pump - Failing When Hot
  103. Oil Pan Leak?
  104. 2002 Deville misfire on Northstar
  105. I'm gonna do a block test today
  106. Car keeps overheating
  107. Service fuel system
  108. radiator cap # ?
  109. Northstar Loan-A-Tool Program, USA shipping on stud kits
  110. EGR Major Issues..help!
  111. 2000 Deville surging?
  112. 1998 STS crankshaft position sensors location
  113. Deville engine swaps and differences
  114. Water pump won't break
  115. New business pratices and standards coming into effect Apr 15/2014
  116. AIR pump on '99
  117. 1995 STS - multiple crank cold starts
  118. Pre-diagnosing HG issues?
  119. eldo running hot
  120. Which alternator? 94 Deville Concours
  121. My 1994 Deville 4.9 is starting to show some signs.
  122. 1999 deville - replaced water pump - running hot
  123. 2009 Buick Lucerne Headgasket
  124. The American V8 - Anatomy of a Hydrolock
  125. 2005 Deville oil pan seal leak
  126. Vacuum diagram
  127. 1997 STS - Long crank/start times - (Advice / Ideas)
  128. Lower crankcase reseal - 2005 Deville
  129. My sincerest apologies and also thanks -
  130. headbolt inserts
  131. Northstar and carbon cleaning
  132. Running but ............... 2001 Northstar
  133. 2000 DTS - no power
  134. To buy or not to buy.....1998 ESC
  135. 1996 DeVille flex plate replacement
  136. engine oil in intake manifold
  137. 2004 DTS Frustrations... misfires and SES
  138. 2000 SLS powertrain/ cradle removal
  139. 98 deville coolant smell?
  140. 02 N☆ Fuel Pressure
  141. Air intake upgrade - DTS Performance ?
  142. 2007 Engine Knock 4.6 Help
  143. The Caddy lives again - Life after the dreaded head leakage
  144. 1997 Deville - EGR remove & replace
  145. Northstar head bolt hole thread repair options
  146. Northstar Production Numbers 1993-2009
  147. 2000 STS - P 0300 - rough idle
  148. 2003 Seville EGR codes
  149. 2004 DHS - CMP location ?
  150. Mechinical buzzing noise from under hood ( 2002 Deville, 150,000)
  151. Blue devil and Norhtstar:
  152. Stalling issue - slow speeds - 1998 ETC
  153. Damaged throttle cable (1998 Deville)
  154. 2000 DTS - correct replacement engine ?
  155. My experience with the water crossover job
  156. Northstar Swap Question
  157. Interesting Listing........ pre-2000 Northstar and transmission
  158. 2001 Deville oil distribution manifold plate seal leak
  159. 1998 Deville has leak at water crossover (150,000 miles)
  160. 2003 Head Gasket Repair
  161. 2006 Northstar engine problems - Buick Lucerne
  162. Water pump? 1999 STS overheating
  163. Northstar swap into a 1987 Fiero GT - engines and differences
  164. Oil Filter Pre-fill
  165. The InFamous N* Oil Leak - Oil Manifold
  166. Engine miss - 1998 Deville
  167. Priming Northstar after total rebuild
  168. Which Rear Main Seal installer do I need for a 1999 DeVille?
  169. Alt amps too high?
  170. 2003 STS engine seized
  171. Cylinder damage question....extended idling
  172. Anyone use "cadillacheadgasketfix.com" in bellflower, ca. to rebuild their Northstar?
  173. My 2000 Deville is back to life
  174. Melted camshaft water pump drive pulley
  175. 2001 Deville N* Spark plug boots questions
  176. drove over curb in fog 96 cadi died and wont restart
  177. fuel injector removal
  178. 2000 head gasket/ insert differences
  179. Northstar overheating-Repair
  180. Head porting Northstar...
  181. 01 Seville runs rough, 0306 code intermittent
  182. Attention all Northstar engine owners - Carroll Cadillac studs
  183. Questions about pre 00 Northstar oil change and use of additives
  184. Pressure in expansion tank
  185. ran out of gas now my SES light turned on any help
  186. New Northstar Crate Engines
  187. very bad coolant leak
  188. High Idle question
  189. Flowmasters on a 2003 SLS
  190. Simple spark plug question - Northstar "tune up"
  191. Results posted - Christmas Draw - FREE STUD KIT!
  192. 2004 Deville rough idle
  193. 1996 Deville fuel injectors
  194. Cylinder head bolt replacement
  195. Northstar R&D-Bench Test Apparatus
  196. Hello Cadillac/Northstar owners
  197. 1996 Deville...... 4.6 Northstar trouble......lotsa trouble.
  198. P0300 Misfire - My problem and solution + more problems...
  199. Best Engine Mounts - 1993-1994 or the newer?
  200. Blown head gasket repair
  201. occassional stalling problem
  202. 05 Deville
  203. Northstar battery life expectation
  204. 2001 DTS Valve Clearance question
  205. Fuel Pump Longevity/Milage Expectations
  206. Torquing N* head
  207. 96' Northstar cranks, will not start
  208. 01 Deville Cylinder #1 misfire
  209. bucking and kicking
  210. Northstar sitting for 12 years...need new springs?
  211. 2005 Bonneville GXP Northstar jumped time
  212. 2001 ETC Intermittent High Idle
  213. 2001 DTS won't accelerate past 2K rpms after spark plug change
  214. Advice on NorthStar coils - both ignition types
  215. Another Shout Out to Jake!!
  216. Code P 0171 showing - 1999 Deville
  217. 2001 DTS - interference engine 4.6l and timing chain replacement ?
  218. Studded heads update
  219. 1999 STS coolant questions
  220. 2000 STS NS smoking under hood after WOT
  221. Governor in NorthStar V8?
  222. O2 sensor-bank 1 S1
  223. No spark
  224. Please help! 94 SLS water pump cover...
  225. Wherer do these parts go ???
  226. Sudden Increase in Oil Consumption 2003 DHS
  227. Crankshaft pulley wobble
  228. 2001 Deville. Can't start after reinstalling engine
  229. Head gaskets and Time-Serts
  230. Oil pump?
  231. Help find part
  232. Maximum valve lift 04-05 Northstar 4.6
  233. 96' Northstar coolant leak
  234. cooling fan relays
  235. Help - 1993 Eldorado needs new engine
  236. Head Bolt Threads - Bonneville Northstar
  237. DOHC theory, any new information?
  238. Compression Ring Treatment
  239. 300 Northstar Headgasket repairs completed
  240. Where do these go?
  241. New motor to replace the northstar
  242. Northstar Replacement
  243. 2001 Deville hesitates while accelerating
  244. Retirement from the physical repairs to focus on the stud kits-
  245. The Dreaded Northstar Leaking Head Gasket- Fix, Sell or Junk?
  246. Why Leaking Headgaskets
  247. Is it dangerous - cracked flexplate on a Northstar
  248. 2008 STS engin dont swing
  249. fuel pump suddenly stops
  250. Stumble and stall