: Northstar Engines and System Technical Discussion



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  1. Northstar TB upgrade
  2. 2002 Deville Transaxle
  3. clogged heater core
  4. 2000 Deville Base - Front Ground Wire
  5. fuel injectors,1993 4.6 northstar VIn Y
  6. Chips
  7. my STS...its a miracle!
  8. How to clean out fuel system in a 96 Eldorado sitting for 6 years.
  9. low oil pressure-'97 SLS
  10. Northstar exhaust
  11. Update on parts I have/had
  12. Northstar Smoke On Startup
  13. O5 DeVille Is That My Lifters I Hear????
  14. 2006 4.6 northstar performance upgrades
  15. 1995 SLS questions on codes
  16. Recommend Pro Mar in NJ for a Northstar Rebuild. :)
  17. Replacing a Northstar in my 2003 Seville...what should I check for?
  18. HELP! 1999 SLS Coolant leak
  19. 2008 DTS misfire issue
  20. P 0300 code 2005 DTS - can't find the miss
  21. .030" over head gasket?
  22. 4.6L 32 valve water in oil
  23. P 0306 code
  24. 2000 DHS - cooling system problems
  25. 1990 DeVille idles rough
  26. 1997 STS - hard start, backfire when cranking
  27. Tappets or Rocker Followers - Two Different Head Designs???
  28. 2004 0r 2006 ?
  29. Change cat?
  30. Changing the Serpentine belt on a VIN Y Northstar V8
  31. 2006 Northstar 4.6 overheating
  32. 2002 STS Bottom end repaired early on.........questions
  33. 2002 DTS Northstar questions
  34. Northstar Water Pump Mounting Changes - Year?
  35. 94 SLS feels like its going to stall when at stoplight
  36. 2000 DTS - Overheating Issues
  37. 2001 Northstar piston to rod orientation?
  38. Should I clean my EGR valve also replace air pump
  39. Best transmission for a Northstar to LaSalle Street Rod swap
  40. Would these chain tensioners cause excessive engine noise?
  41. Rebuilt 4.6 from Davis Auto Repair or Cadillac Doctor
  42. Real bad oil leak!
  43. P0719how much coukd this code cost me
  44. Drink coasters from engine cover emblems.
  45. Strange compression test results, oil inside intake manifold & smoke !!
  46. Bore heads for larger headbolts or stud/insert ?
  47. Diffrence from 2000 and 2006 northstar engine?
  48. Exxon valdez
  49. 97 ETC Head Gasket Project
  50. 1998 Deville Northstar - ready to get my hands dirty
  51. Northstar V-8 Engine - Gasoline Issue
  52. Engine shaking
  53. Piston pin
  54. Northstar cam timing and chain problem
  55. Small Oil Leak and Smell in 2000 Cadillac Deville
  56. Are 2001 y code transmissions AAN and VAN interchangeable?
  57. Crank question
  58. Where Does This Bracket Go??
  59. LD8 non-interference motor?
  60. Losing Compression
  61. where is thermostat
  62. Issues with code P 0411 - 2006 DTS
  63. 96 Deville won't idle down, hard start and backfires when cold
  64. 99 DeVille D'elegance
  65. Northstar build
  66. Intermediate Timing Chain Gear fit
  67. Fuel pressure jumping up and down on my 1998 Eldorado
  68. Mystery klanking sound.. over 200K N*
  69. GUZZLING GAS!!! 2000 Deville...
  70. 96 Northstar Build
  71. Misfire - 2001 Deville
  72. To fix the Blown Head Gasket, how hard is it if DIY?
  73. Help-Broke Oil Pressure Switch wires while replaceing CKP's 03 Deville
  74. Piston detonation evidence - 1998 Northstar
  75. Coolant crossover
  76. Northstar V8 and 4T80E questions
  77. 2002 SLS Code P 0401
  78. DTS oil level and change oil soon messages
  79. Rough Idle After Retiming.
  80. Yet another oil question - mix SAE 30 with 10W-30 ?
  81. No acceleration... 2000 Deville
  82. Northstar Manual Transmission Possibility?
  83. Idling Trouble for 2004 Deville
  84. Timing chain issue, not lining up? stretched chain possibly?
  85. Rough idle/shuddering and misfires...2004 SRX Northstar
  86. Northstar oil flow diagram - oil in a head bolt hole
  87. Coolant Temperature Problem
  88. SES Light - codes P0171 & P0174 - 2004 Seville
  89. Oil filter
  90. Used Northstar powertrains-FS
  91. production codes
  92. radiator cooling in cold temps
  93. Can anyone identify this?
  94. 2005 Northstar Knock on Start Up
  95. Swap engine from 2006-2007 into 2000 DTS ?
  96. 1994 Concours - head gasket replacement ?
  97. p0154/0151
  98. Engine cover removal
  99. Northstar Overheating Problem- Is it possible to live with or even avoid...?
  100. oops ruined a couple studs by accident
  101. Looking for a cartridge style rear main seal installer
  102. need a new motor!
  103. cataclean info
  104. Northstar Performance SLOW!!!!!!!!!!!!!!
  105. CODES of past ,present,future?
  106. CKP & OP Sensors AND Oil Filter Adapter Sealing, Servicing - Candidate 4 Sticky
  107. 1998 Eldorado failed HG
  108. need a little advice on what im looking at
  109. 97 Concours won't start now
  110. 1997 ETC engine performance upgrades
  111. 2006-2009 DTS Common Problems
  112. Engine randomly stalls when it rains and ran into another problem
  113. Pre-'05 4T80E Torque Converter Upgrade from viscous silicone to '05-later EC3?
  114. Looking for Northstar experts in or around Atlanta, GA
  115. Northstar water pump 2006-2011
  116. STP High mileage oil additive.
  117. Re: 2000+ Northstar Plenum Replacement steps
  118. NO oil war just info on dexos,please
  119. The Stumbling, The Codes and The Solution
  120. Engine knock after rebuild 2005 northstar
  121. 01 STS - Head Gasket - Perm or Temp/Quick Fix Solution
  122. Main Cap Bolt broken in block, UGHH.
  123. location of starter
  124. 1995 STS starter questions and seeking advice
  125. dog bones life span
  126. Engine parts cleaning during overhaul
  127. 2000 STS Northstar coolant problems
  128. Transaxle leaking
  129. Northstar head gasket problem
  130. 2000 Deville Code P0741 & P1860
  131. Motor Mounts
  132. Just bought a 99 Deville - question about the oil
  133. Buyer beware
  134. HOW TO: Change surge tank (and coolant) on a 96 VIN Y DeVille
  135. tapping sound
  136. hard shifting
  137. hard start, hi reving cadillac after storage
  138. oil leak. water pump camshaft
  139. 1998 caddy STS fixed wp pulleys & belt. More issues!!!
  140. Northstar - any thoughts or advice ????
  141. More big props to joe
  142. Plenum Issue??? AIR system issue ???
  143. 1999 Deville PCM codes - can you tune it?
  144. Overheating Northstars and bleeder valves
  145. How do you find tdc on cylinder #1 using timing marks?
  146. Cadillac Deville 2000 plugs and boots
  147. 2000 STS code 9 swapping to 2001 Y code engine
  148. 1996 STS - P1406 DTC with bucking and hesitation
  149. Quick and Dirty 97 Deville HG Job
  150. Check engine light won't go away???
  151. How do I drain ALL the coolant?
  152. High Mileage engine oil question
  153. Northstar Head/Engine removal
  154. A question for the more experienced N* gear-heads on site. Gasket or rings?
  155. Torque Spec for ARP Studs in Northstar
  156. Unusual noises or am I crazy?
  157. Exhaust parts needed
  158. CF chips
  159. Oil percentage - OLM information
  160. False Overheating?
  161. Issues Removing Crank Pulley
  162. Having HG problems and ordered NORTHSTAR PERFORMANCE studs...
  163. help with removing engine from 97 deville
  164. Oil Drain plug seized...can you use an air impact to remove without damage?
  165. 97 Deville Won't Start
  166. 2003 STS Idle/MAF/Coolant temp issues/Driving itself
  167. smokey the bandit!
  168. Engine misfire at certain times of the day - 2003 STS
  169. Can I use regular torque numbers on my cylinder heads?
  170. Concerns with my 1997 Northstar Engine
  171. 99 Deville Concours with cracked block!
  172. heater tube connection leak
  173. How To Remove Heater Core Hoses ? - 1997 Deville
  174. Northstar rev limiter
  175. New Owner 93 Eldorado pic. ? about HG issues in the early Northstars
  176. Is this the worst rusty engine you have seen?
  177. small coolant drip where sensor mounts
  178. Best way to flush cooling system
  179. For those that wish to "plug in & play"....late 90's N* crate engine
  180. 4.0 Northstar Performance Upgrade
  181. Seeking N* help in VA.....
  182. 98 Deville D'Elegance Stays At 222 F
  183. 1998 Eldorado - DexCool mix
  184. Size of hose used to connect heater line tubing
  185. 99DeVille_NrthSt*r's Project Thread
  186. 97 Deville Concours - Rough Starting
  187. Top pullers, I need help with a bolt
  188. 99 DeVille Electrical Harness
  189. Northstar Performance - Cylinder Head Studs. Stock Issues Resolved.
  190. 96 deville crossover gasket
  191. The best sealant for the oil pan gasket
  192. Vacuum Leak after WOT (P0101) - 2003 STS
  193. Does anyone know a good Cadillac mechanic in the NYC area
  194. Great deal on Rear Main Seal installer... but better hurry!
  195. Head Gasket Kit Verification
  196. Is it worth it?
  197. Results of coolant in oil
  198. 2000 Deville shakes at Idle, No DTC's
  199. Engine block cracked - Northstar Performance, where are you ?
  200. Cradle swapping possibilities
  201. Non Production VVT Northstar
  202. Jake Northstar Performance - stud problems
  203. Update on remanufactured Northstar Performance engine. 1 year later
  204. Head Gasket Questions
  205. Another overheating northstar....
  206. Northstar interesting stuff....
  207. '00 Deville sat for year. Coolant, Battery, Misfire, Brake fluid problems HELP
  208. Northstar Water Pump Housing Replacment
  209. my 1995 Cadillac Eldorado Overheating
  210. Seafoam - do you use it?
  211. Another N* Oil Pump question
  212. 2005 DTS Head gasket still a problem?
  213. Gforce performance "chip" ?
  214. SureGrip studded Eldo for sale?!!
  215. I'm relocating,,,,new complaints section....
  216. Remote key fob
  217. oil manifold question
  218. How do you clean ring grooves on pistons?
  219. Video. For those who want to see CNC machining in action.
  220. Plugs - Spark plugs for a Northstar ??
  221. Want To Buy N* stud tool kit
  222. What happened? Stored 1996 Deville engine knock
  223. Northstar head gasket repair
  224. WOT problem and P0300 - 2000 Eldorado
  225. Marks Turbocharged 99 STS
  226. water pump leak after replacing pump/seal
  227. Missing shield in cam cover?
  228. tight northstar cam chain
  229. front motor mounts
  230. northstar studs
  231. 2000 Deville - high pitched whistle
  232. 99 Deville HG job 4-2012
  233. I have a set of studs available if someone needs them thanks to my previous thread
  234. DIY Northstar Head Gasket / Crankcase Leak Repair
  235. 1997 Seville temperature problems
  236. Don't Wait More Than 120 days
  237. How to tell if head gaskets have been done before?
  238. Need top compression ring 98 N*....ugghhh
  239. 18mm Northstar Crankbolt needed
  240. 98 Eldorado replacing Engine Torque Mounts
  241. Troubleshooting help
  242. New Northstar Crate Engine
  243. Valve stem seal tool?
  244. Code P070 with stalling and surging-TPS or ISC?
  245. Huge thanks to Joe at Midwest Cadillac Repair
  246. Factory air intake question
  247. Bent pushrod - valvetrain noise ?
  248. '01 DTS Misfire.
  249. Thread size for Jake's studs?
  250. Drive Train Hum & No Overdrive