: Northstar Engines and System Technical Discussion



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  1. Troubleshooting help
  2. New Northstar Crate Engine
  3. Valve stem seal tool?
  4. Code P070 with stalling and surging-TPS or ISC?
  5. Huge thanks to Joe at Midwest Cadillac Repair
  6. Factory air intake question
  7. Bent pushrod - valvetrain noise ?
  8. '01 DTS Misfire.
  9. Thread size for Jake's studs?
  10. Drive Train Hum & No Overdrive
  11. Towing in third gear
  12. 2004 Deville PCM
  13. 01 Deville OverHeating Issue
  14. Please help diagnose my cooling system problem
  15. Overheating
  16. Is there an alternate way to lock the flywheel?
  17. northstar stud kit
  18. What engines are compatible with 2000 seville sts.... Coil to spark plug type.....
  19. Coolant Reservoir Overflow Line
  20. N* Upper to Lower block half sealing procedure.
  21. To re-seal or not?
  22. How do you SAFELY clean the valve covers?
  23. 98 ETC Head Gasket project started today...
  24. 2002 Eldorado ETC Head Gasket Project
  25. 97 N* Crank Pulley / Oil Pump Torque setting
  26. WP cam price
  27. 2001 Deville VIN Y - head gasket repair on Long Island ?
  28. Anyone want to compare MAF readings?
  29. Wheres Jake? We need studs and engines !!!
  30. serp belt
  31. Question about the Northstar PCM
  32. 96 Sedan De Ville V8 Northstar Over Heating
  33. po 300, po 507 need help asap!!
  34. 1997 STS N* connecting rod stamped number
  35. Is there an on-line breakdown of N* engine parts with GM part numbers?
  36. Torque specs on fasteners - torque angle?
  37. Northstar headbolt spacing/ pattern
  38. 95 eldorado 8th letter of vin is y
  39. Recently purchaced 2003 Cadillac Dev
  40. engine swap for a 2000 dts to a 2003 devell can it work i
  41. Jake, I REALLY, REALLY want to give you some money!
  42. Saga of a naive Head Gasket repair
  43. Cracked block!!!!
  44. What causes a headgasket failure?
  45. Spark advance/knock - What is tolerance?
  46. Towing with 02 Deville
  47. Northstar Temp sensor & Lock up converter ?'s
  48. P119 and p080
  49. Another (slightly different) Northstar oil consumption question.....
  50. holley injector harness
  51. Northstar oil pump failure
  52. 4.6 Rod Clearance
  53. Determining Headbolt Thread Pitch
  54. Thank You
  55. Scratched Wall
  56. 4T80E Electronically controlled torque converter clutch
  57. Do The 2006 and newer DTS Northstars have the same headgasket issues?
  58. Feels like a miss?
  59. Need some advice for Northstar car purchase...
  60. need help with rough running northstsar
  61. '03 DeVille - Slight shudder under initial acceleration
  62. how can i check if head gasket leaks
  63. 1994 Deville Concours Ignition Control Module Replacement
  64. Get it while you can..........
  65. Backfiring issues
  66. Rear main seal install tool confusion
  67. surges/sputters while driving, but idles perfectly fine?
  68. Code P041 and Code P025 in 1994 Deville Concours
  69. Northstar 4.6 Overheating
  70. Differences of studs vs. Timeserts
  71. 94 deville concours northstar catalytic converter redhot and stalls
  72. dipstick level, which side to believe?
  73. 2002 Eldorado coolant flush what kind?
  74. Heated Seat Issue..Please Help!
  75. Running on 4 Cylinders..not in Overheat mode
  76. 2002 Deville, White Smoke when Ideling
  77. 1999 Deville w/ Northstar coolant issue
  78. Another 2000+ head gasket failure
  79. 01 Deville DHS N* Repair in DFW Metroplex
  80. SureGrip stud kit / jig combo allignment?
  81. How hard to try to pull the head bolts on Northstar?
  82. How do I pull the airbox in my Eldo?
  83. 2000 Deville Crank Sensor Problems.. Please help if you can..
  84. ethanol or not
  85. Areas to look at while doing a HG repair
  86. PCM/EBTCM Pin Diagram, 2001 SLS
  87. Jake, wish you best of Luck !!
  88. What wire for the Speedo?
  89. Time sert kit kit # 500
  90. Torque Converter Whine
  91. PCM and engine switching
  92. 4T80E Viscous Torque Converter Internals / Clutch Failure (Lots of pictures included)
  93. timeserts
  94. Northstar removal
  95. Blocks, cracks and heat
  96. Please help: 1996 deville hard starting ?
  97. 2000 Deville using oil
  98. 2003 Deville engine start problem
  99. What exactly is a "base model" Deville ?
  100. need to replace flywheel
  101. Service engine light
  102. Possible to run northstar on an engine stand or outside of the car?
  103. Oil leak 2004 DHS could switching to Syn oil at 60k cause a leak or make one worse
  104. A few codes to clear up (02 Deville)
  105. Northstar Camshaft Wear - Common? Cause?
  106. My 98 Deville N* HG repair adventure !!
  107. northstar engine several issues--need major help
  108. Water pump removal
  109. Northstar coolant leak
  110. More Northstar repair services......ENJOY
  111. Shell Rimula R6 ME 5W30
  112. Camshaft pulley removal
  113. P0300 Code goes off at high rpm.
  114. Turbo'ed 98-04 STS N*
  115. 99' cadillac head gasket problems
  116. Fuel Injector resistance 1994 Northstar motor
  117. Northstar Main Studs-
  118. $575 99 Seville project Car overheating
  119. My Little Northstar engine Project
  120. Trans question p0748 after trans repaired by rebuilder
  121. 1994 Deville Concours PCM Replacement
  122. 94 Deville Concours PCM Codes P041 and P119
  123. Misfire Cylender 4 Low Compresion after flashing SES and p0300
  124. prospective owner with HG question
  125. tcc solenoid need help asap
  126. egr blockoff
  127. 01 eldorado ESC "hard" starting and once wouldn't start
  128. Shelby 1 Olds Supercharged Aurora - How About LS9 or LSA?
  129. Direct Injection - Technology Question
  130. Bought the '97 etc replacement
  131. Advice from some repair guys on cleaning processes
  132. 94 STS head gasket question
  133. Doesn't seem to be the head gasket but still overheats
  134. Looking for HG Repair Shop in Southeast US
  135. evap solonoid
  136. Ebay: Brand new Vortech Supercharged Aurora 4.0 engine
  137. 1995 elder northstar cooling
  138. how to change camshaft position sensor on 1997 sts
  139. Not happy with Federal Mogul's quality levels anymore. Specifically Fel-Pro.
  140. 1994 SLS Northstar running rich and stalling
  141. Front seal is leaking
  142. Thorttle body problem and code p2135
  143. Ignition drop-outs
  144. L37, ld8, l47 & lx5
  145. My 98 Deville with straight pipes... what do you guys think?
  146. hg repairs
  147. Wierd Temperature spikes 02 deville
  148. There was a thread or sticky that was all about engine oild and dino or conventional
  149. Oil pump prime
  150. Motor Mount project
  151. Hello Everyone, I need help with getting an engine......
  152. P0304 Misfire cylinder 4
  153. N* picky about motor oil?
  154. Timing chain seems loose on a 4.6L Deville.
  155. 99 deville fans just stop both of them
  156. Replacing a TPS in a 99 Deville?
  157. 2000 Deville Idle Relearn
  158. Polishing Cam lobes?
  159. Northstar Tuneup
  160. Felpro intake manifold gaskets
  161. PCM Codes P0171 and P0174
  162. 100 Cadillac head gasket repairs completed
  163. NorthStar Engine Block Crack Have you had one What year and how did it crack
  164. 4.6 N* Crank shaft / oil pump question
  165. hard starting 1997 sts
  166. air in coolant system?
  167. more electrical gremlins
  168. No fuel pressure
  169. Photos of the CNC turning center-
  170. 98 STS White smoke on accelation
  171. Should I have my brand new, never fired 4.0 long-block studded?
  172. Found my coolant leak
  173. Oil pump seal/oring
  174. Looking for a SPECIFIC N* Removal Guide
  175. Remote start and push button ignition
  176. Consequences of driving with failed HG
  177. How to space piston rings
  178. Cam journal caps broke
  179. Should I replace PCM? Need 2nd & 3rd opinions
  180. New owner of 1997 Eldorado, many questions
  181. N* To pull or not to pull, A/C is the question.
  182. 2002 Deville; Installing Vin Y Engine Into Vin 9 Car
  183. Northstar PCM Tuning
  184. Cross over gaskets ?
  185. Smells like exhaust in antifreeze again............... ?
  186. Disabling air injection system in 2002 engine?
  187. Couple of problems with my 94 Seville.
  188. 1994 cadillac seville Spark plug change
  189. Bad head gaskets or user error?
  190. northstar pre-trip opinion
  191. Source for engine internal parts?
  192. First post: Anyone know if the RWD and AWD wire harnesses are the same for 04-05 STS?
  193. If Engine has been Studed can you Remove the heads and put the heads back with in car
  194. So where is my oil level sensor?
  195. Curious. . .crankshaft position sensors, are they reversable?
  196. Bad mileage
  197. Taking Pre-Orders for bottom end stud kits-
  198. Any good Northstar shops near Maryland?
  199. Have code P071 & P046
  200. Cost of DIY Headgaskets/studs?
  201. Ceramic coated exhaust manifolds?
  202. What is the timeline for Head Gasket failure
  203. Where are the parts for this build?
  204. MAF Housing R&R
  205. ticking tapping noise in engine video attached
  206. Interesting find........
  207. proper torque-to-yield on 99 sts
  208. Northstar 4.6 bottom end
  209. 1996 ETC Code nightmares p13
  210. 2000 STS Half-case seal gasket P/N
  211. Looks like an early factory "new" create engine
  212. Northstar Shake
  213. 5/16 course Head Bolts?
  214. Time sert removal
  215. tcc solenoid
  216. Just got exhaust work done and now I'm getting some codes... Advice? 2002 DTS
  217. Question regarding slight motor mount/tranny thump
  218. 85 Northstar head gasket jobs completed 85 Cadillacs saved!
  219. Looking for a shop in GA that uses Studs for HG repair
  220. Help with Tune Up Northstar 4.6
  221. Disassembling my first N*
  222. bad ground the route of all evil ??
  223. Mysterious loss of coolant / 7000 miles without a problem since new studs & gaskets..
  224. Engine swap question
  225. New Guy to Northstar and their General Maintaince
  226. Torque Converter Shaft
  227. Painting engine cover and valve cover/s
  228. 1996 Cadillac Seville SLS - Replacing water pump belt HELP!
  229. Still getting Missfire-New AC Delco Plugs and new coil packs
  230. Removing exhaust down pipe on 99 Seville
  231. 94 Cadillac Seville SLS flooding out real bad
  232. New Member engine overheating problem...
  233. Oil Pressure...
  234. Pretty sure I have a fuel leak somewhere under the hood
  235. Engine Coolant Temperature Gauges / Cooling Fans Operation Explained
  236. Oil, cams, Northstars, and ZDDP
  237. New member, 1st caddy- low coolant level warning
  238. 2000 SLS engine oddity
  239. 4.0 rebuild
  240. Northstar swap transmission please help
  241. Best method of cleaning
  242. Crank Bolt Removal and free block/tranny
  243. Time Sert Kit Needed.
  244. Iím not Convinced it the Head Gaskets again?
  245. Code question?
  246. Out the top! First time....
  247. cam swap to 4.0l
  248. Timesert Failure
  249. Looking for a GOOD shop in/near MASS for engine install.
  250. HG For Me Too!