: Northstar Engines and System Technical Discussion



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  1. Oil leak
  2. N* rebuild....hmmm what to add to my mod list
  3. Keys to long lasting N*'s
  4. Complete engine overhaul, need help ASAP
  5. Cadillac Eldorado 1995 ER HELP NEEDED!!!
  6. Huge Problem, No Shop Can Fix!!!! Help!!!
  7. 04 STS misfires when idles, goes away when you floor it.
  8. northstar research thread pics 56k beware
  9. Exhaust size
  10. Plugs And Wires
  11. Which kind of FPR?
  12. 93 Seville?
  13. 96-99 motor wiring diagrams
  14. 91 Eldo STILL misses
  15. Torque vs Horsepower primer
  16. Crankshaft Position Sensor Replaced-Code Still Set P0385
  17. Water pump question on 94 STS
  18. Is it possible to lose HP
  19. Performance tune-up for 94 North*using performance coils.
  20. 97 N* Shaky idle
  21. 97 N8 port, polish and valve job
  22. Differance between 94 and 97 N*
  23. Question about the transmission fluid
  24. Northstar Misfire... no error codes
  25. More Horsepower
  26. Volant Review / So I did it without instructions.
  27. Tranny Prob, Please help!!
  28. High oil consumption (1 quart/week!!)
  29. A/C question/help for 94 STS
  30. Magnets Increase Mileage/Power??
  31. TC0047 Code
  32. Need some help installing Volant
  33. Add Engine Oil alert
  34. P1860... Problem
  35. loss of fuel pressure
  36. O2 sensor change, mpg improvement?
  37. Northstar heads(all) and ECU Chip(93-95). Real power!
  38. 97 deville-changing plugs and wires
  39. NS300L Insert kit
  40. Head gasket set
  41. Coolant Change?
  42. P0441... P0404... ?
  43. P0533... fuel gauge is going nuts
  44. Trans Solenoids??
  45. Timesert VS NS300L Insert System
  46. How much runout is okay?
  47. 95 concours stalling
  48. Looking for Timesert Kit
  49. '94 SLS oil pan / oil manifold / half case leaks
  50. Metal pipe coolant leak...'custom' fix???
  51. Engine apart, which direction does it crank?
  52. 94 Northstar with broken valve.
  53. Oil pressure emergency
  54. hesitation
  55. Timeserts
  56. '99 or '00 ETC?
  57. Fuel pump locking ring
  58. What else do I need to know after unhooking PCM
  59. coolant change
  60. Volant Install
  61. Rebuilt Northstars
  62. Found Rotella 10W-30 at O'Reilly auto parts
  63. PSA: Need sensors?
  64. 1999 Deville front suspension rattle
  65. 1996 Deville 4.6L Water Pump Replacement
  66. N* drive train weight
  67. felpro headgaskets
  68. N* 4.0 liter removal
  69. Smoke at startup?
  70. Whining Power Steering Pump
  71. Questions about servicing my 99 Deville
  72. Where 2 buy main and rod berings for 2004 N*
  73. Lady In Distress - '01 Northstar Intermittent Stalling & Not Starting - Clues Please?
  74. Anyone have HG pics? Not overheating but probs...
  75. Nitrous A/F findings & questions.
  76. 2 N* Questions - Coolent and Tranny Dipstick?
  77. 96 STS Head Gasket Story...
  78. cool Northstar info.
  79. Engine removal
  80. 96 Deville 4.6 North* overheating problem
  81. Hot Hot Hot Is Gone - Finally
  82. A couple Nasty Problems! HELP!
  83. How to change fuel injectors?
  84. Tips for replacing Crankshaft Position Sensors
  85. Oil pan gasket leak!
  86. Oil leak?
  87. left blinker not working when headlights on
  88. Lag in the transmission
  89. p1441 evap code help
  90. P043 -- headache -- what is happening???
  91. New here
  92. Differences in 275 & 300 HP Nstar
  93. Electric Turbo
  94. PCM swap???
  95. Northstar Blocks Cracking ?
  96. what is wrong w/ my n*
  97. Oxygen Sensors Grounding
  98. 94 Seville-Turn signals not working, smoking?
  99. trouble starting after timesert job - HELP!
  100. How do you Northstar owners like your Northstars? Would you recommend them?
  101. Northstar performance Upgrades!!!
  102. Northstar Engine Block STEEL CYL INSERTS
  103. a lil help please
  104. How do I tell if my headgasket was repaired?
  105. keep losing coolant...hard to trace
  106. '94 STS is overheating
  107. '94 SLS Idling to fast
  108. 01 Eldo - 100shot Nitrous - track results
  109. RSM Racing / No more?
  110. 2000 STS Error Codes
  111. quick engine question
  112. A few questions about the 4.0 Northstar
  113. So what would happen...
  114. engine oil leaking
  115. Oil change today after 12,735 since last oil change
  116. Help with Check engine light and pcm codes!!
  117. Is this realistic ?
  118. which car to buy
  119. fuel injector fell out!?!?
  120. exhaust sizes and upgrades?
  121. exhuast sizes an performance
  122. 1996 Deville with a small head gasket leak.
  123. Water Pump pulley
  124. Anyone have a timesert bit they could measure for me?
  125. No Spark On Hot Restart
  126. Northstar parts
  127. question on swaping out 96 northstar
  128. Engine additives...safe for N*?
  129. Transmission Problem
  130. Finally Been Done Cadillac Obd-2 N* Pcm Programmer!!!
  131. Need help one more time!!!!!
  132. hot start when cold
  133. Headgaskets - deterioration or pulled head studs?
  134. Oil Coverd Spark Plugs on Northstar
  135. 1995 new starter $1000 plus?...
  136. AC Compressor
  137. How to calculate HP to weight ratio?
  138. 300 hp northstar in a deville
  139. Belt problem
  140. motor oil?
  141. 94 DeVille..I cant get my drive belt back on. Help!!
  142. not rough idle, just abnormal, help?!
  143. help identifying parts and removing wire harness
  144. Starter Grind on 94 STS
  145. P132 (E132) ......................................... Knock Sensor Circuitry Failure
  146. Oil Pan Removal??? What am I missing
  147. N* water pump?
  148. What Year NSs Fit a '99 Deville? Need Help
  149. Well...how about ram air?
  150. Congratulations to Ranger...10000 posts
  151. Does The Tornado Really work? And Cold air intake!!!
  152. Was H. Gasket Prob Fixed in Later NStars?
  153. 2000 NS Oil Leak
  154. 94 ETC intermittent/low RPM miss
  155. Catalytic Converter Question -
  156. runaway eng Speed -Glowing exhaust -4.6L N*
  157. GM replacement surge tank cap
  158. Help installing camshafts
  159. Sound like the injectors?
  160. 94 eldo tc engine knocking (i think)
  161. Engine Roaring and Popping from dead stop
  162. 03 STS rough IDLE P0300 & U1016 Code
  163. So I went on the highway in 2nd gear...
  164. Water pump belt?
  165. Low/No Oil Pressure
  166. Leaking oil, Not leaking oil
  167. Where Is The Ecu/pcm Located.
  168. Cylinder pressure test for blown head gasket??
  169. coolant pipes - replace or repair?
  170. few head gasket procedure questions
  171. MAP Sensor Problems. Need A Little Guidance.
  172. So Mixing Different Weight Oils is OK?
  173. Fan fuse
  174. Northstar Engine Swap. Has any1 Done it?
  175. Has anyone experience there car cutting off when the fuel is low but will restart?
  176. 99 STS Turbo Update
  177. Northstar cooling system question
  178. Hot Hot Hot !!!!
  179. How exactly do Oil Life Monitors work?
  180. crankshalf sensors
  181. S060 and P039
  182. DENSO or AC Delco Spark Plugs for a Northstar?
  183. normal running temp for a northstar?
  184. Water Pump replacement on a 96 deville
  185. Gonna Have to LIve with the Lifter Tick
  186. Codes
  187. 98 sts overheating problems
  188. corsa exhaust sound clip
  189. My northstar went south
  190. Crankshaft Position Sensor dead again??!?! Symptoms?
  191. 93-95 performance parts!
  192. 2003 FWD Deville engine dying
  193. Damaged boot between intake & tb... need advice
  194. red line
  195. new o2 sensor still p030 when idle
  196. turn signal problem ('94 STS)
  197. warped heads common?
  198. radiator or head gasket????????
  199. thermostat options
  200. Bad ( burning? ) Smell
  201. ISC replacement
  202. 98 deville spark plugs
  203. Oil Level Sensor
  204. Dropping cradle today, need a bit of guidance
  205. Maff screen remove? power gains?
  206. Runnin without o2 fuses in
  207. Thoughts on G-Tech Pro
  208. PCM Programming for N*?
  209. Decreased Performance ???
  210. anyone use non-"time" serts
  211. Fuel Rail Question...
  212. portability of engine, tranny, etc
  213. Harder than heck to start my
  214. Z-rated 93/94 Seville/Eldo PCM for sale-Ebay
  215. Northstar ETC dynoed
  216. Northstar in an Allante vs an STS?
  217. Long Block Replacement
  218. Leaking Fuel Rail
  219. turning off traction control on '95 sts
  220. New Towing Hitch
  221. Overheating problem just started.
  222. Normal Oil Consumption ???
  223. 112mph???
  224. 93 N* coolant temp sensor
  225. Finally Found PCM Programmer for 96-04 N* OBD-2!!!
  226. Voltage question
  227. Oil Question?????
  228. 97' Cadillac Deville Overheating
  229. ticking throttle
  230. Best Head Gasket Sealer
  231. '94 SLS Crankshaft pully
  232. 99 seville sls
  233. 1/4 mile
  234. radiator fan not spinning
  235. Noisy Lifters
  236. Sticky lifter Update
  237. Expensive Air Filters Worth it???
  238. Coolant system question
  239. hard start when hot, not FPR
  240. An Intresting scan tool
  241. pre 99 N* water pump belt tensioner.
  242. Hard Start/ Fuel Odor
  243. Belt Pulley
  244. coolant flow question
  245. Reading data from OBD II
  246. Inaccurate Battery Voltage Display??
  247. Detonation and Pre-ignition
  248. 94 STS needs help
  249. lifting a northstar
  250. Bosch +2 plugs (report)