: Northstar Engines and System Technical Discussion



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