: Northstar Engines and System Technical Discussion



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  1. Engine shaking
  2. Piston pin
  3. Northstar cam timing and chain problem
  4. Small Oil Leak and Smell in 2000 Cadillac Deville
  5. Are 2001 y code transmissions AAN and VAN interchangeable?
  6. Crank question
  7. Where Does This Bracket Go??
  8. LD8 non-interference motor?
  9. Losing Compression
  10. where is thermostat
  11. Issues with code P 0411 - 2006 DTS
  12. 96 Deville won't idle down, hard start and backfires when cold
  13. 99 DeVille D'elegance
  14. Northstar build
  15. Intermediate Timing Chain Gear fit
  16. Fuel pressure jumping up and down on my 1998 Eldorado
  17. Mystery klanking sound.. over 200K N*
  18. GUZZLING GAS!!! 2000 Deville...
  19. 96 Northstar Build
  20. Misfire - 2001 Deville
  21. To fix the Blown Head Gasket, how hard is it if DIY?
  22. Help-Broke Oil Pressure Switch wires while replaceing CKP's 03 Deville
  23. Piston detonation evidence - 1998 Northstar
  24. Coolant crossover
  25. Northstar V8 and 4T80E questions
  26. 2002 SLS Code P 0401
  27. DTS oil level and change oil soon messages
  28. Rough Idle After Retiming.
  29. Yet another oil question - mix SAE 30 with 10W-30 ?
  30. No acceleration... 2000 Deville
  31. Northstar Manual Transmission Possibility?
  32. Idling Trouble for 2004 Deville
  33. Timing chain issue, not lining up? stretched chain possibly?
  34. Rough idle/shuddering and misfires...2004 SRX Northstar
  35. Northstar oil flow diagram - oil in a head bolt hole
  36. Coolant Temperature Problem
  37. SES Light - codes P0171 & P0174 - 2004 Seville
  38. Oil filter
  39. Used Northstar powertrains-FS
  40. production codes
  41. radiator cooling in cold temps
  42. Can anyone identify this?
  43. 2005 Northstar Knock on Start Up
  44. Swap engine from 2006-2007 into 2000 DTS ?
  45. 1994 Concours - head gasket replacement ?
  46. p0154/0151
  47. Engine cover removal
  48. Northstar Overheating Problem- Is it possible to live with or even avoid...?
  49. oops ruined a couple studs by accident
  50. Looking for a cartridge style rear main seal installer
  51. need a new motor!
  52. cataclean info
  53. Northstar Performance SLOW!!!!!!!!!!!!!!
  54. CODES of past ,present,future?
  55. CKP & OP Sensors AND Oil Filter Adapter Sealing, Servicing - Candidate 4 Sticky
  56. 1998 Eldorado failed HG
  57. need a little advice on what im looking at
  58. 97 Concours won't start now
  59. 1997 ETC engine performance upgrades
  60. 2006-2009 DTS Common Problems
  61. Engine randomly stalls when it rains and ran into another problem
  62. Pre-'05 4T80E Torque Converter Upgrade from viscous silicone to '05-later EC3?
  63. Looking for Northstar experts in or around Atlanta, GA
  64. Northstar water pump 2006-2011
  65. STP High mileage oil additive.
  66. Re: 2000+ Northstar Plenum Replacement steps
  67. NO oil war just info on dexos,please
  68. The Stumbling, The Codes and The Solution
  69. Engine knock after rebuild 2005 northstar
  70. 01 STS - Head Gasket - Perm or Temp/Quick Fix Solution
  71. Main Cap Bolt broken in block, UGHH.
  72. location of starter
  73. 1995 STS starter questions and seeking advice
  74. dog bones life span
  75. Engine parts cleaning during overhaul
  76. 2000 STS Northstar coolant problems
  77. Transaxle leaking
  78. Northstar head gasket problem
  79. 2000 Deville Code P0741 & P1860
  80. Motor Mounts
  81. Just bought a 99 Deville - question about the oil
  82. Buyer beware
  83. HOW TO: Change surge tank (and coolant) on a 96 VIN Y DeVille
  84. tapping sound
  85. hard shifting
  86. hard start, hi reving cadillac after storage
  87. oil leak. water pump camshaft
  88. 1998 caddy STS fixed wp pulleys & belt. More issues!!!
  89. Northstar - any thoughts or advice ????
  90. More big props to joe
  91. Plenum Issue??? AIR system issue ???
  92. 1999 Deville PCM codes - can you tune it?
  93. Overheating Northstars and bleeder valves
  94. How do you find tdc on cylinder #1 using timing marks?
  95. Cadillac Deville 2000 plugs and boots
  96. 2000 STS code 9 swapping to 2001 Y code engine
  97. 1996 STS - P1406 DTC with bucking and hesitation
  98. Quick and Dirty 97 Deville HG Job
  99. Check engine light won't go away???
  100. How do I drain ALL the coolant?
  101. High Mileage engine oil question
  102. Northstar Head/Engine removal
  103. A question for the more experienced N* gear-heads on site. Gasket or rings?
  104. Torque Spec for ARP Studs in Northstar
  105. Unusual noises or am I crazy?
  106. Exhaust parts needed
  107. CF chips
  108. Oil percentage - OLM information
  109. False Overheating?
  110. Issues Removing Crank Pulley
  111. Having HG problems and ordered NORTHSTAR PERFORMANCE studs...
  112. help with removing engine from 97 deville
  113. Oil Drain plug seized...can you use an air impact to remove without damage?
  114. 97 Deville Won't Start
  115. 2003 STS Idle/MAF/Coolant temp issues/Driving itself
  116. smokey the bandit!
  117. Engine misfire at certain times of the day - 2003 STS
  118. Can I use regular torque numbers on my cylinder heads?
  119. Concerns with my 1997 Northstar Engine
  120. 99 Deville Concours with cracked block!
  121. heater tube connection leak
  122. How To Remove Heater Core Hoses ? - 1997 Deville
  123. Northstar rev limiter
  124. New Owner 93 Eldorado pic. ? about HG issues in the early Northstars
  125. Is this the worst rusty engine you have seen?
  126. small coolant drip where sensor mounts
  127. Best way to flush cooling system
  128. For those that wish to "plug in & play"....late 90's N* crate engine
  129. 4.0 Northstar Performance Upgrade
  130. Seeking N* help in VA.....
  131. 98 Deville D'Elegance Stays At 222 F
  132. 1998 Eldorado - DexCool mix
  133. Size of hose used to connect heater line tubing
  134. 99DeVille_NrthSt*r's Project Thread
  135. 97 Deville Concours - Rough Starting
  136. Top pullers, I need help with a bolt
  137. 99 DeVille Electrical Harness
  138. Northstar Performance - Cylinder Head Studs. Stock Issues Resolved.
  139. 96 deville crossover gasket
  140. The best sealant for the oil pan gasket
  141. Vacuum Leak after WOT (P0101) - 2003 STS
  142. Does anyone know a good Cadillac mechanic in the NYC area
  143. Great deal on Rear Main Seal installer... but better hurry!
  144. Head Gasket Kit Verification
  145. Is it worth it?
  146. Results of coolant in oil
  147. 2000 Deville shakes at Idle, No DTC's
  148. Engine block cracked - Northstar Performance, where are you ?
  149. Cradle swapping possibilities
  150. Non Production VVT Northstar
  151. Jake Northstar Performance - stud problems
  152. Update on remanufactured Northstar Performance engine. 1 year later
  153. Head Gasket Questions
  154. Another overheating northstar....
  155. Northstar interesting stuff....
  156. '00 Deville sat for year. Coolant, Battery, Misfire, Brake fluid problems HELP
  157. Northstar Water Pump Housing Replacment
  158. my 1995 Cadillac Eldorado Overheating
  159. Seafoam - do you use it?
  160. Another N* Oil Pump question
  161. 2005 DTS Head gasket still a problem?
  162. Gforce performance "chip" ?
  163. SureGrip studded Eldo for sale?!!
  164. I'm relocating,,,,new complaints section....
  165. Remote key fob
  166. oil manifold question
  167. How do you clean ring grooves on pistons?
  168. Video. For those who want to see CNC machining in action.
  169. Plugs - Spark plugs for a Northstar ??
  170. Want To Buy N* stud tool kit
  171. What happened? Stored 1996 Deville engine knock
  172. Northstar head gasket repair
  173. WOT problem and P0300 - 2000 Eldorado
  174. Marks Turbocharged 99 STS
  175. water pump leak after replacing pump/seal
  176. Missing shield in cam cover?
  177. tight northstar cam chain
  178. front motor mounts
  179. northstar studs
  180. 2000 Deville - high pitched whistle
  181. 99 Deville HG job 4-2012
  182. I have a set of studs available if someone needs them thanks to my previous thread
  183. DIY Northstar Head Gasket / Crankcase Leak Repair
  184. 1997 Seville temperature problems
  185. Don't Wait More Than 120 days
  186. How to tell if head gaskets have been done before?
  187. Need top compression ring 98 N*....ugghhh
  188. 18mm Northstar Crankbolt needed
  189. 98 Eldorado replacing Engine Torque Mounts
  190. Troubleshooting help
  191. New Northstar Crate Engine
  192. Valve stem seal tool?
  193. Code P070 with stalling and surging-TPS or ISC?
  194. Huge thanks to Joe at Midwest Cadillac Repair
  195. Factory air intake question
  196. Bent pushrod - valvetrain noise ?
  197. '01 DTS Misfire.
  198. Thread size for Jake's studs?
  199. Drive Train Hum & No Overdrive
  200. Towing in third gear
  201. 2004 Deville PCM
  202. 01 Deville OverHeating Issue
  203. Please help diagnose my cooling system problem
  204. Overheating
  205. Is there an alternate way to lock the flywheel?
  206. northstar stud kit
  207. What engines are compatible with 2000 seville sts.... Coil to spark plug type.....
  208. Coolant Reservoir Overflow Line
  209. N* Upper to Lower block half sealing procedure.
  210. To re-seal or not?
  211. How do you SAFELY clean the valve covers?
  212. 98 ETC Head Gasket project started today...
  213. 2002 Eldorado ETC Head Gasket Project
  214. 97 N* Crank Pulley / Oil Pump Torque setting
  215. WP cam price
  216. 2001 Deville VIN Y - head gasket repair on Long Island ?
  217. Anyone want to compare MAF readings?
  218. Wheres Jake? We need studs and engines !!!
  219. serp belt
  220. Question about the Northstar PCM
  221. 96 Sedan De Ville V8 Northstar Over Heating
  222. po 300, po 507 need help asap!!
  223. 1997 STS N* connecting rod stamped number
  224. Is there an on-line breakdown of N* engine parts with GM part numbers?
  225. Torque specs on fasteners - torque angle?
  226. Northstar headbolt spacing/ pattern
  227. 95 eldorado 8th letter of vin is y
  228. Recently purchaced 2003 Cadillac Dev
  229. engine swap for a 2000 dts to a 2003 devell can it work i
  230. Jake, I REALLY, REALLY want to give you some money!
  231. Saga of a naive Head Gasket repair
  232. Cracked block!!!!
  233. What causes a headgasket failure?
  234. Spark advance/knock - What is tolerance?
  235. Towing with 02 Deville
  236. Northstar Temp sensor & Lock up converter ?'s
  237. P119 and p080
  238. Another (slightly different) Northstar oil consumption question.....
  239. holley injector harness
  240. Northstar oil pump failure
  241. 4.6 Rod Clearance
  242. Thank You
  243. Scratched Wall
  244. 4T80E Electronically controlled torque converter clutch
  245. Do The 2006 and newer DTS Northstars have the same headgasket issues?
  246. Feels like a miss?
  247. Need some advice for Northstar car purchase...
  248. need help with rough running northstsar
  249. '03 DeVille - Slight shudder under initial acceleration
  250. how can i check if head gasket leaks