: Northstar Engines and System Technical Discussion



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