: Northstar Engines and System Technical Discussion



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  1. 01 Northstar Water in oil, high oil use, misses when cold.
  2. Coolant Leak Source? (pictures)
  3. When to reseal case halves?
  4. Look what I found in my engine!
  5. Puzzling Clattering Noise During Warm Startups
  6. HG's vs Pulled Threads
  7. Cat problems?
  8. Oil leaks on 1998 ElDorado
  9. 2000+ Intake Manifold on 1998 Northstar
  10. 2001 Deville - coolant boiling in reservoir
  11. Problem with my 1994 Eldorado engine - smoking
  12. code P 0171, P 0174 - solved
  13. Unable to communicate with the console cluster
  14. North Star Engine Disappointment (copy)
  15. SJ - API oil
  16. 97 ETC exhaust manifold fasterners.
  17. Fix the engine, (HG), replace the engine?
  18. Where does this go...?
  19. PCV Valve Elbow?
  20. Pics of my oil leaks
  21. combustion leak tester
  22. Anyone used Lucas Engine Stop Leak?
  23. Water pump issue, mostly? 1994 STS
  24. 98 Deville Water Pump Fail After Serpentine Belt Replaced
  25. Water Pump - Failing When Hot
  26. Oil Pan Leak?
  27. 2002 Deville misfire on Northstar
  28. I'm gonna do a block test today
  29. Car keeps overheating
  30. Service fuel system
  31. radiator cap # ?
  32. Northstar Loan-A-Tool Program, USA shipping on stud kits
  33. EGR Major Issues..help!
  34. 2000 Deville surging?
  35. 1998 STS crankshaft position sensors location
  36. Deville engine swaps and differences
  37. Water pump won't break
  38. New business pratices and standards coming into effect Apr 15/2014
  39. AIR pump on '99
  40. 1995 STS - multiple crank cold starts
  41. Pre-diagnosing HG issues?
  42. eldo running hot
  43. Which alternator? 94 Deville Concours
  44. My 1994 Deville 4.9 is starting to show some signs.
  45. 1999 deville - replaced water pump - running hot
  46. 2009 Buick Lucerne Headgasket
  47. The American V8 - Anatomy of a Hydrolock
  48. 2005 Deville oil pan seal leak
  49. Vacuum diagram
  50. 1997 STS - Long crank/start times - (Advice / Ideas)
  51. Lower crankcase reseal - 2005 Deville
  52. My sincerest apologies and also thanks -
  53. headbolt inserts
  54. Northstar and carbon cleaning
  55. Running but ............... 2001 Northstar
  56. 2000 DTS - no power
  57. To buy or not to buy.....1998 ESC
  58. 1996 DeVille flex plate replacement
  59. engine oil in intake manifold
  60. 2004 DTS Frustrations... misfires and SES
  61. 2000 SLS powertrain/ cradle removal
  62. 98 deville coolant smell?
  63. 02 N☆ Fuel Pressure
  64. Air intake upgrade - DTS Performance ?
  65. 2007 Engine Knock 4.6 Help
  66. The Caddy lives again - Life after the dreaded head leakage
  67. 1997 Deville - EGR remove & replace
  68. Northstar head bolt hole thread repair options
  69. Northstar Production Numbers 1993-2009
  70. 2000 STS - P 0300 - rough idle
  71. 2003 Seville EGR codes
  72. 2004 DHS - CMP location ?
  73. Mechinical buzzing noise from under hood ( 2002 Deville, 150,000)
  74. Blue devil and Norhtstar:
  75. Stalling issue - slow speeds - 1998 ETC
  76. Damaged throttle cable (1998 Deville)
  77. 2000 DTS - correct replacement engine ?
  78. My experience with the water crossover job
  79. Northstar Swap Question
  80. Interesting Listing........ pre-2000 Northstar and transmission
  81. 2001 Deville oil distribution manifold plate seal leak
  82. 1998 Deville has leak at water crossover (150,000 miles)
  83. 2003 Head Gasket Repair
  84. 2006 Northstar engine problems - Buick Lucerne
  85. Water pump? 1999 STS overheating
  86. Northstar swap into a 1987 Fiero GT - engines and differences
  87. Oil Filter Pre-fill
  88. The InFamous N* Oil Leak - Oil Manifold
  89. Engine miss - 1998 Deville
  90. Priming Northstar after total rebuild
  91. Which Rear Main Seal installer do I need for a 1999 DeVille?
  92. Alt amps too high?
  93. 2003 STS engine seized
  94. Cylinder damage question....extended idling
  95. Anyone use "cadillacheadgasketfix.com" in bellflower, ca. to rebuild their Northstar?
  96. My 2000 Deville is back to life
  97. Melted camshaft water pump drive pulley
  98. 2001 Deville N* Spark plug boots questions
  99. drove over curb in fog 96 cadi died and wont restart
  100. fuel injector removal
  101. 2000 head gasket/ insert differences
  102. Northstar overheating-Repair
  103. Head porting Northstar...
  104. 01 Seville runs rough, 0306 code intermittent
  105. Attention all Northstar engine owners - Carroll Cadillac studs
  106. Questions about pre 00 Northstar oil change and use of additives
  107. Pressure in expansion tank
  108. ran out of gas now my SES light turned on any help
  109. New Northstar Crate Engines
  110. very bad coolant leak
  111. High Idle question
  112. Flowmasters on a 2003 SLS
  113. Simple spark plug question - Northstar "tune up"
  114. Results posted - Christmas Draw - FREE STUD KIT!
  115. 2004 Deville rough idle
  116. 1996 Deville fuel injectors
  117. Cylinder head bolt replacement
  118. Northstar R&D-Bench Test Apparatus
  119. Hello Cadillac/Northstar owners
  120. 1996 Deville...... 4.6 Northstar trouble......lotsa trouble.
  121. P0300 Misfire - My problem and solution + more problems...
  122. Best Engine Mounts - 1993-1994 or the newer?
  123. Blown head gasket repair
  124. occassional stalling problem
  125. 05 Deville
  126. Northstar battery life expectation
  127. 2001 DTS Valve Clearance question
  128. Fuel Pump Longevity/Milage Expectations
  129. Torquing N* head
  130. 96' Northstar cranks, will not start
  131. 01 Deville Cylinder #1 misfire
  132. bucking and kicking
  133. Northstar sitting for 12 years...need new springs?
  134. 2005 Bonneville GXP Northstar jumped time
  135. 2001 ETC Intermittent High Idle
  136. 2001 DTS won't accelerate past 2K rpms after spark plug change
  137. Advice on NorthStar coils - both ignition types
  138. Another Shout Out to Jake!!
  139. Code P 0171 showing - 1999 Deville
  140. 2001 DTS - interference engine 4.6l and timing chain replacement ?
  141. Studded heads update
  142. 1999 STS coolant questions
  143. 2000 STS NS smoking under hood after WOT
  144. Governor in NorthStar V8?
  145. O2 sensor-bank 1 S1
  146. No spark
  147. Please help! 94 SLS water pump cover...
  148. Wherer do these parts go ???
  149. Sudden Increase in Oil Consumption 2003 DHS
  150. Crankshaft pulley wobble
  151. 2001 Deville. Can't start after reinstalling engine
  152. Head gaskets and Time-Serts
  153. Oil pump?
  154. Help find part
  155. Maximum valve lift 04-05 Northstar 4.6
  156. 96' Northstar coolant leak
  157. cooling fan relays
  158. Help - 1993 Eldorado needs new engine
  159. Head Bolt Threads - Bonneville Northstar
  160. DOHC theory, any new information?
  161. Compression Ring Treatment
  162. Where do these go?
  163. New motor to replace the northstar
  164. Northstar Replacement
  165. 2001 Deville hesitates while accelerating
  166. Retirement from the physical repairs to focus on the stud kits-
  167. The Dreaded Northstar Leaking Head Gasket- Fix, Sell or Junk?
  168. Why Leaking Headgaskets
  169. Is it dangerous - cracked flexplate on a Northstar
  170. 2008 STS engin dont swing
  171. fuel pump suddenly stops
  172. Stumble and stall
  173. Valve cover gaskets
  174. On the road again!
  175. 2001 Deville flat or domed pistons
  176. Changing the water pump "Belt?
  177. 1998 STS - Dies at speed and won't restart sometimes.
  178. Is it safe to buy a Northstar now? I can't stop driving Cadillacs!
  179. Northstar size question
  180. Need mechanic - 1994 STS Northstar near Winnipeg
  181. Northstar overheating
  182. Interchangeability of VIN: 9 and VIN: Y transmissions?
  183. Northstar Commander 950 base Map - sand rail install
  184. overheating need help
  185. Just a head gasket failure?
  186. Northstar engine questions from Finland
  187. P 0171 and P 0174 code - 2004 Deville
  188. new generator-->ECM broken
  189. Disconnecting EGR
  190. water crossover
  191. mid case reseal tsb
  192. 4.6 N* Cylinder walls
  193. Replacing the alternator on 97 Deville Concours
  194. Ready to stud another northstar
  195. Heli-Coil removal?
  196. Northstar Performance
  197. Wanted to clean EGR but what have those engineers done now
  198. 99 N* rebuilt and burning lots of oil
  199. Northstar into Chevy Beretta swap
  200. 2001 Deville overheating... block test OK
  201. low oil pressure
  202. Pros & Cons Cadillac 4.6 vs Ford 4.6 (eg lincoln mark viii and others)
  203. Codes P0171, P0174 and P1258 come up on 1997 Deville
  204. Coil pack
  205. Eastern Massachusetts Cadillac shops?
  206. voltage question
  207. Bouncing Idles - 1995 SLS Northstar
  208. 2000 STS question
  209. Northstar maintenance requirements - 2005 Deville
  210. Brand New 1993-1994 Northstar Engine - Oil Leak Modified or Not
  211. Hard Starting Warm - if not Pedal to the Metal
  212. DHS 2000 won't start after changing CranKshaft and CaMshaft Position Sensors
  213. 1996 Deville over heats when ac is on
  214. HG question - 1997 Eldorado, 127000 miles
  215. need help
  216. Now what do I do? Northstar block casting porosity
  217. Coolant all over top of engine?
  218. 97 SLS Overheating - I've checked everything and need ideas
  219. 03 Deville hard idle and bogging out lower speeds
  220. 2003 Deville CKP codes
  221. P 0300 random misfire - 2000 STS
  222. Northstar Performance rebuilt engine
  223. exhaust buzzing noise 2006 dts
  224. Northstar head repair in Chicagoland area
  225. Guide pins
  226. Installing Rear Main Seal with Crank Removed
  227. Heater core follows head gasket ?
  228. 99 SLS overheating, need help
  229. Fixing Head Gasket
  230. Kent-Moore VS Time-sert
  231. Bought 1998 Deville 4 days ago - overheating
  232. Northstar: Did they ever get better?
  233. I need step by step procedure to replace a 2005 STS motor LH2 quickly
  234. HG test and green result
  235. Eliminating/raising the speed limiter - how to?
  236. Water pump removal socket-northstar
  237. Lurching idle
  238. 5.3 motor
  239. 95 Eldorado alternator plug wiring
  240. OVERHEATING (Long)
  241. 2000 Deville Motor Mount Heat Shield
  242. 95-99 Engine Beauty Cover - Intake bolts Not lining up
  243. 1998 STS Trouble Codes & Emission Test
  244. A positive HG repair experience
  245. 2000 DHS transmission light on
  246. Anyone that has pulled an N*? PLEASE! I need some advice.
  247. Blown Head Gasket Help
  248. Sell or Keep N*
  249. Best way to clean the engine bay?
  250. Shops that specilize in head gasket repair.