: Northstar Engines and System Technical Discussion



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