: Northstar Engines and System Technical Discussion



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  1. Compression Ring Treatment
  2. 300 Northstar Headgasket repairs completed
  3. Where do these go?
  4. New motor to replace the northstar
  5. Northstar Replacement
  6. 2001 Deville hesitates while accelerating
  7. Retirement from the physical repairs to focus on the stud kits-
  8. The Dreaded Northstar Leaking Head Gasket- Fix, Sell or Junk?
  9. Why Leaking Headgaskets
  10. Is it dangerous - cracked flexplate on a Northstar
  11. 2008 STS engin dont swing
  12. fuel pump suddenly stops
  13. Stumble and stall
  14. Valve cover gaskets
  15. On the road again!
  16. 2001 Deville flat or domed pistons
  17. Changing the water pump "Belt?
  18. 1998 STS - Dies at speed and won't restart sometimes.
  19. Is it safe to buy a Northstar now? I can't stop driving Cadillacs!
  20. Northstar size question
  21. Need mechanic - 1994 STS Northstar near Winnipeg
  22. Northstar overheating
  23. Interchangeability of VIN: 9 and VIN: Y transmissions?
  24. Northstar Commander 950 base Map - sand rail install
  25. overheating need help
  26. Just a head gasket failure?
  27. Northstar engine questions from Finland
  28. P 0171 and P 0174 code - 2004 Deville
  29. new generator-->ECM broken
  30. Disconnecting EGR
  31. water crossover
  32. mid case reseal tsb
  33. 4.6 N* Cylinder walls
  34. Replacing the alternator on 97 Deville Concours
  35. Ready to stud another northstar
  36. Heli-Coil removal?
  37. Northstar Performance
  38. Wanted to clean EGR but what have those engineers done now
  39. 99 N* rebuilt and burning lots of oil
  40. Northstar into Chevy Beretta swap
  41. 2001 Deville overheating... block test OK
  42. low oil pressure
  43. Pros & Cons Cadillac 4.6 vs Ford 4.6 (eg lincoln mark viii and others)
  44. Codes P0171, P0174 and P1258 come up on 1997 Deville
  45. Coil pack
  46. Eastern Massachusetts Cadillac shops?
  47. voltage question
  48. Bouncing Idles - 1995 SLS Northstar
  49. 2000 STS question
  50. Northstar maintenance requirements - 2005 Deville
  51. Brand New 1993-1994 Northstar Engine - Oil Leak Modified or Not
  52. Hard Starting Warm - if not Pedal to the Metal
  53. DHS 2000 won't start after changing CranKshaft and CaMshaft Position Sensors
  54. 1996 Deville over heats when ac is on
  55. HG question - 1997 Eldorado, 127000 miles
  56. need help
  57. Now what do I do? Northstar block casting porosity
  58. Coolant all over top of engine?
  59. 97 SLS Overheating - I've checked everything and need ideas
  60. 03 Deville hard idle and bogging out lower speeds
  61. 2003 Deville CKP codes
  62. P 0300 random misfire - 2000 STS
  63. Northstar Performance rebuilt engine
  64. exhaust buzzing noise 2006 dts
  65. Northstar head repair in Chicagoland area
  66. Guide pins
  67. Installing Rear Main Seal with Crank Removed
  68. Heater core follows head gasket ?
  69. 99 SLS overheating, need help
  70. Fixing Head Gasket
  71. Kent-Moore VS Time-sert
  72. Bought 1998 Deville 4 days ago - overheating
  73. Northstar: Did they ever get better?
  74. I need step by step procedure to replace a 2005 STS motor LH2 quickly
  75. HG test and green result
  76. Eliminating/raising the speed limiter - how to?
  77. Water pump removal socket-northstar
  78. Lurching idle
  79. 5.3 motor
  80. 95 Eldorado alternator plug wiring
  81. OVERHEATING (Long)
  82. 2000 Deville Motor Mount Heat Shield
  83. 95-99 Engine Beauty Cover - Intake bolts Not lining up
  84. 1998 STS Trouble Codes & Emission Test
  85. A positive HG repair experience
  86. 2000 DHS transmission light on
  87. Anyone that has pulled an N*? PLEASE! I need some advice.
  88. Blown Head Gasket Help
  89. Sell or Keep N*
  90. Best way to clean the engine bay?
  91. Shops that specilize in head gasket repair.
  92. oil loadup at idle
  93. EGR Cleaning - '97 ETC
  94. engine over heating..
  95. Cleared PCM codes - now emissions test not ready
  96. Madtuner.com
  97. N* 4.6 Bad Compression, Help Please
  98. Best Replacement Mount For 2000 Deville
  99. Do not stud a Northstar
  100. Drilling and Tapping The Northstar V8......my personal experience so far.
  101. Northstar TB upgrade
  102. 2002 Deville Transaxle
  103. clogged heater core
  104. 2000 Deville Base - Front Ground Wire
  105. fuel injectors,1993 4.6 northstar VIn Y
  106. Chips
  107. my STS...its a miracle!
  108. How to clean out fuel system in a 96 Eldorado sitting for 6 years.
  109. low oil pressure-'97 SLS
  110. Northstar exhaust
  111. Update on parts I have/had
  112. Northstar Smoke On Startup
  113. O5 DeVille Is That My Lifters I Hear????
  114. 2006 4.6 northstar performance upgrades
  115. 1995 SLS questions on codes
  116. Recommend Pro Mar in NJ for a Northstar Rebuild. :)
  117. Replacing a Northstar in my 2003 Seville...what should I check for?
  118. HELP! 1999 SLS Coolant leak
  119. 2008 DTS misfire issue
  120. P 0300 code 2005 DTS - can't find the miss
  121. .030" over head gasket?
  122. 4.6L 32 valve water in oil
  123. P 0306 code
  124. 2000 DHS - cooling system problems
  125. 1990 DeVille idles rough
  126. 1997 STS - hard start, backfire when cranking
  127. Tappets or Rocker Followers - Two Different Head Designs???
  128. 2004 0r 2006 ?
  129. Change cat?
  130. Changing the Serpentine belt on a VIN Y Northstar V8
  131. 2006 Northstar 4.6 overheating
  132. 2002 STS Bottom end repaired early on.........questions
  133. 2002 DTS Northstar questions
  134. Northstar Water Pump Mounting Changes - Year?
  135. 94 SLS feels like its going to stall when at stoplight
  136. 2000 DTS - Overheating Issues
  137. 2001 Northstar piston to rod orientation?
  138. Should I clean my EGR valve also replace air pump
  139. Best transmission for a Northstar to LaSalle Street Rod swap
  140. Would these chain tensioners cause excessive engine noise?
  141. Rebuilt 4.6 from Davis Auto Repair or Cadillac Doctor
  142. Real bad oil leak!
  143. P0719how much coukd this code cost me
  144. Drink coasters from engine cover emblems.
  145. Strange compression test results, oil inside intake manifold & smoke !!
  146. Bore heads for larger headbolts or stud/insert ?
  147. Diffrence from 2000 and 2006 northstar engine?
  148. Exxon valdez
  149. 97 ETC Head Gasket Project
  150. 1998 Deville Northstar - ready to get my hands dirty
  151. Northstar V-8 Engine - Gasoline Issue
  152. Engine shaking
  153. Piston pin
  154. Northstar cam timing and chain problem
  155. Small Oil Leak and Smell in 2000 Cadillac Deville
  156. Are 2001 y code transmissions AAN and VAN interchangeable?
  157. Crank question
  158. Where Does This Bracket Go??
  159. LD8 non-interference motor?
  160. Losing Compression
  161. where is thermostat
  162. Issues with code P 0411 - 2006 DTS
  163. 96 Deville won't idle down, hard start and backfires when cold
  164. 99 DeVille D'elegance
  165. Northstar build
  166. Intermediate Timing Chain Gear fit
  167. Fuel pressure jumping up and down on my 1998 Eldorado
  168. Mystery klanking sound.. over 200K N*
  169. GUZZLING GAS!!! 2000 Deville...
  170. 96 Northstar Build
  171. Misfire - 2001 Deville
  172. To fix the Blown Head Gasket, how hard is it if DIY?
  173. Help-Broke Oil Pressure Switch wires while replaceing CKP's 03 Deville
  174. Piston detonation evidence - 1998 Northstar
  175. Coolant crossover
  176. Northstar V8 and 4T80E questions
  177. 2002 SLS Code P 0401
  178. DTS oil level and change oil soon messages
  179. Rough Idle After Retiming.
  180. Yet another oil question - mix SAE 30 with 10W-30 ?
  181. No acceleration... 2000 Deville
  182. Northstar Manual Transmission Possibility?
  183. Idling Trouble for 2004 Deville
  184. Timing chain issue, not lining up? stretched chain possibly?
  185. Rough idle/shuddering and misfires...2004 SRX Northstar
  186. Northstar oil flow diagram - oil in a head bolt hole
  187. Coolant Temperature Problem
  188. SES Light - codes P0171 & P0174 - 2004 Seville
  189. Oil filter
  190. Used Northstar powertrains-FS
  191. production codes
  192. radiator cooling in cold temps
  193. Can anyone identify this?
  194. 2005 Northstar Knock on Start Up
  195. Swap engine from 2006-2007 into 2000 DTS ?
  196. 1994 Concours - head gasket replacement ?
  197. p0154/0151
  198. Engine cover removal
  199. Northstar Overheating Problem- Is it possible to live with or even avoid...?
  200. oops ruined a couple studs by accident
  201. Looking for a cartridge style rear main seal installer
  202. need a new motor!
  203. cataclean info
  204. Northstar Performance SLOW!!!!!!!!!!!!!!
  205. CODES of past ,present,future?
  206. CKP & OP Sensors AND Oil Filter Adapter Sealing, Servicing - Candidate 4 Sticky
  207. 1998 Eldorado failed HG
  208. need a little advice on what im looking at
  209. 97 Concours won't start now
  210. 1997 ETC engine performance upgrades
  211. 2006-2009 DTS Common Problems
  212. Engine randomly stalls when it rains and ran into another problem
  213. Pre-'05 4T80E Torque Converter Upgrade from viscous silicone to '05-later EC3?
  214. Looking for Northstar experts in or around Atlanta, GA
  215. Northstar water pump 2006-2011
  216. STP High mileage oil additive.
  217. Re: 2000+ Northstar Plenum Replacement steps
  218. NO oil war just info on dexos,please
  219. The Stumbling, The Codes and The Solution
  220. Engine knock after rebuild 2005 northstar
  221. 01 STS - Head Gasket - Perm or Temp/Quick Fix Solution
  222. Main Cap Bolt broken in block, UGHH.
  223. location of starter
  224. 1995 STS starter questions and seeking advice
  225. dog bones life span
  226. Engine parts cleaning during overhaul
  227. 2000 STS Northstar coolant problems
  228. Transaxle leaking
  229. Northstar head gasket problem
  230. 2000 Deville Code P0741 & P1860
  231. Motor Mounts
  232. Just bought a 99 Deville - question about the oil
  233. Buyer beware
  234. HOW TO: Change surge tank (and coolant) on a 96 VIN Y DeVille
  235. tapping sound
  236. hard shifting
  237. hard start, hi reving cadillac after storage
  238. oil leak. water pump camshaft
  239. 1998 caddy STS fixed wp pulleys & belt. More issues!!!
  240. Northstar - any thoughts or advice ????
  241. More big props to joe
  242. Plenum Issue??? AIR system issue ???
  243. 1999 Deville PCM codes - can you tune it?
  244. Overheating Northstars and bleeder valves
  245. How do you find tdc on cylinder #1 using timing marks?
  246. Cadillac Deville 2000 plugs and boots
  247. 2000 STS code 9 swapping to 2001 Y code engine
  248. 1996 STS - P1406 DTC with bucking and hesitation
  249. Quick and Dirty 97 Deville HG Job
  250. Check engine light won't go away???