: Northstar Engines and System Technical Discussion



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