: Northstar Engines and System Technical Discussion



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  1. Iridium Spark plugs
  2. Oil Change
  3. Bar's Leaks J-120
  4. MAF Sensor
  5. cracked block pics
  6. possible Northstar PCM Programmer
  7. Export code
  8. Strange hole under ignition module
  9. Balls to the wall - N* style
  10. Timesert kit for sale
  11. Bank 2 identification
  12. Source of whining noise
  13. So many questions, so little time
  14. need help with p036 and p094
  15. Odin8 are you out there ?
  16. will '94 concours fuel injectors fit '96 sts?
  17. 1BadCaddy 94' STS update on power tune up.
  18. 4T80E Troubles?
  19. Coolant leak under throttle body area?
  20. After Shift Sol. Replacement...
  21. Safe amount of boos for stock motor?
  22. Found the reason why my car "jerks" during acceleration
  23. Head torque
  24. Ground Cable Location?
  25. Northstar leaking coolant....big time!
  26. Setting the timing gears and belts on 96 n* 4.6
  27. Help on hesitant start...
  28. New to forum, getting a caddy, some advice needed...
  29. Head gasket = overheat while driving or idling?
  30. Mini N*
  31. Tranny Prob, sheared pump shaft
  32. Twin Turbo N* powered 1948 Tucker
  33. cracked block
  34. Legit "Performance chip"?
  35. Missing Hose On Vacuum Purge Switch?
  36. N* water pump froze in housing
  37. coolant leak 00 sts
  38. 1990 Eldorado won't Start !
  39. started my headgasket job today
  40. is this normal or could this be my problem
  41. Anyone ever see this thing
  42. Sludge in my engine?
  43. WOT's northstar knock?
  44. STS Coolant Burping Air out of Coolant Question
  45. Oil leak
  46. N* rebuild....hmmm what to add to my mod list
  47. Keys to long lasting N*'s
  48. Complete engine overhaul, need help ASAP
  49. Cadillac Eldorado 1995 ER HELP NEEDED!!!
  50. Huge Problem, No Shop Can Fix!!!! Help!!!
  51. 04 STS misfires when idles, goes away when you floor it.
  52. northstar research thread pics 56k beware
  53. Exhaust size
  54. Plugs And Wires
  55. Which kind of FPR?
  56. 93 Seville?
  57. 96-99 motor wiring diagrams
  58. 91 Eldo STILL misses
  59. Torque vs Horsepower primer
  60. Crankshaft Position Sensor Replaced-Code Still Set P0385
  61. Water pump question on 94 STS
  62. Is it possible to lose HP
  63. Performance tune-up for 94 North*using performance coils.
  64. 97 N* Shaky idle
  65. 97 N8 port, polish and valve job
  66. Differance between 94 and 97 N*
  67. Question about the transmission fluid
  68. Northstar Misfire... no error codes
  69. More Horsepower
  70. Volant Review / So I did it without instructions.
  71. Tranny Prob, Please help!!
  72. High oil consumption (1 quart/week!!)
  73. A/C question/help for 94 STS
  74. Magnets Increase Mileage/Power??
  75. TC0047 Code
  76. Need some help installing Volant
  77. Add Engine Oil alert
  78. P1860... Problem
  79. loss of fuel pressure
  80. O2 sensor change, mpg improvement?
  81. Northstar heads(all) and ECU Chip(93-95). Real power!
  82. 97 deville-changing plugs and wires
  83. NS300L Insert kit
  84. Head gasket set
  85. Coolant Change?
  86. P0441... P0404... ?
  87. P0533... fuel gauge is going nuts
  88. Trans Solenoids??
  89. Timesert VS NS300L Insert System
  90. How much runout is okay?
  91. 95 concours stalling
  92. Looking for Timesert Kit
  93. '94 SLS oil pan / oil manifold / half case leaks
  94. Metal pipe coolant leak...'custom' fix???
  95. Engine apart, which direction does it crank?
  96. 94 Northstar with broken valve.
  97. Oil pressure emergency
  98. hesitation
  99. Timeserts
  100. '99 or '00 ETC?
  101. Fuel pump locking ring
  102. What else do I need to know after unhooking PCM
  103. coolant change
  104. Volant Install
  105. Rebuilt Northstars
  106. Found Rotella 10W-30 at O'Reilly auto parts
  107. PSA: Need sensors?
  108. 1999 Deville front suspension rattle
  109. 1996 Deville 4.6L Water Pump Replacement
  110. N* drive train weight
  111. felpro headgaskets
  112. N* 4.0 liter removal
  113. Smoke at startup?
  114. Whining Power Steering Pump
  115. Questions about servicing my 99 Deville
  116. Where 2 buy main and rod berings for 2004 N*
  117. Lady In Distress - '01 Northstar Intermittent Stalling & Not Starting - Clues Please?
  118. Anyone have HG pics? Not overheating but probs...
  119. Nitrous A/F findings & questions.
  120. 2 N* Questions - Coolent and Tranny Dipstick?
  121. 96 STS Head Gasket Story...
  122. cool Northstar info.
  123. Engine removal
  124. 96 Deville 4.6 North* overheating problem
  125. Hot Hot Hot Is Gone - Finally
  126. A couple Nasty Problems! HELP!
  127. How to change fuel injectors?
  128. Tips for replacing Crankshaft Position Sensors
  129. Oil pan gasket leak!
  130. Oil leak?
  131. left blinker not working when headlights on
  132. Lag in the transmission
  133. p1441 evap code help
  134. P043 -- headache -- what is happening???
  135. New here
  136. Differences in 275 & 300 HP Nstar
  137. Electric Turbo
  138. PCM swap???
  139. Northstar Blocks Cracking ?
  140. what is wrong w/ my n*
  141. Oxygen Sensors Grounding
  142. 94 Seville-Turn signals not working, smoking?
  143. trouble starting after timesert job - HELP!
  144. How do you Northstar owners like your Northstars? Would you recommend them?
  145. Northstar performance Upgrades!!!
  146. Northstar Engine Block STEEL CYL INSERTS
  147. a lil help please
  148. How do I tell if my headgasket was repaired?
  149. keep losing coolant...hard to trace
  150. '94 STS is overheating
  151. '94 SLS Idling to fast
  152. 01 Eldo - 100shot Nitrous - track results
  153. RSM Racing / No more?
  154. 2000 STS Error Codes
  155. quick engine question
  156. A few questions about the 4.0 Northstar
  157. So what would happen...
  158. engine oil leaking
  159. Oil change today after 12,735 since last oil change
  160. Help with Check engine light and pcm codes!!
  161. Is this realistic ?
  162. which car to buy
  163. fuel injector fell out!?!?
  164. exhaust sizes and upgrades?
  165. exhuast sizes an performance
  166. 1996 Deville with a small head gasket leak.
  167. Water Pump pulley
  168. Anyone have a timesert bit they could measure for me?
  169. No Spark On Hot Restart
  170. Northstar parts
  171. question on swaping out 96 northstar
  172. Engine additives...safe for N*?
  173. Transmission Problem
  174. Finally Been Done Cadillac Obd-2 N* Pcm Programmer!!!
  175. Need help one more time!!!!!
  176. hot start when cold
  177. Headgaskets - deterioration or pulled head studs?
  178. Oil Coverd Spark Plugs on Northstar
  179. 1995 new starter $1000 plus?...
  180. AC Compressor
  181. How to calculate HP to weight ratio?
  182. 300 hp northstar in a deville
  183. Belt problem
  184. motor oil?
  185. 94 DeVille..I cant get my drive belt back on. Help!!
  186. not rough idle, just abnormal, help?!
  187. help identifying parts and removing wire harness
  188. Starter Grind on 94 STS
  189. P132 (E132) ......................................... Knock Sensor Circuitry Failure
  190. Oil Pan Removal??? What am I missing
  191. N* water pump?
  192. What Year NSs Fit a '99 Deville? Need Help
  193. Well...how about ram air?
  194. Congratulations to Ranger...10000 posts
  195. Does The Tornado Really work? And Cold air intake!!!
  196. Was H. Gasket Prob Fixed in Later NStars?
  197. 2000 NS Oil Leak
  198. 94 ETC intermittent/low RPM miss
  199. Catalytic Converter Question -
  200. runaway eng Speed -Glowing exhaust -4.6L N*
  201. GM replacement surge tank cap
  202. Help installing camshafts
  203. Sound like the injectors?
  204. 94 eldo tc engine knocking (i think)
  205. Engine Roaring and Popping from dead stop
  206. 03 STS rough IDLE P0300 & U1016 Code
  207. So I went on the highway in 2nd gear...
  208. Water pump belt?
  209. Low/No Oil Pressure
  210. Leaking oil, Not leaking oil
  211. Where Is The Ecu/pcm Located.
  212. Cylinder pressure test for blown head gasket??
  213. coolant pipes - replace or repair?
  214. few head gasket procedure questions
  215. MAP Sensor Problems. Need A Little Guidance.
  216. So Mixing Different Weight Oils is OK?
  217. Fan fuse
  218. Northstar Engine Swap. Has any1 Done it?
  219. Has anyone experience there car cutting off when the fuel is low but will restart?
  220. 99 STS Turbo Update
  221. Northstar cooling system question
  222. Hot Hot Hot !!!!
  223. How exactly do Oil Life Monitors work?
  224. crankshalf sensors
  225. S060 and P039
  226. DENSO or AC Delco Spark Plugs for a Northstar?
  227. normal running temp for a northstar?
  228. Water Pump replacement on a 96 deville
  229. Gonna Have to LIve with the Lifter Tick
  230. Codes
  231. 98 sts overheating problems
  232. corsa exhaust sound clip
  233. My northstar went south
  234. Crankshaft Position Sensor dead again??!?! Symptoms?
  235. 93-95 performance parts!
  236. 2003 FWD Deville engine dying
  237. Damaged boot between intake & tb... need advice
  238. red line
  239. new o2 sensor still p030 when idle
  240. turn signal problem ('94 STS)
  241. warped heads common?
  242. radiator or head gasket????????
  243. thermostat options
  244. Bad ( burning? ) Smell
  245. ISC replacement
  246. 98 deville spark plugs
  247. Oil Level Sensor
  248. Dropping cradle today, need a bit of guidance
  249. Maff screen remove? power gains?
  250. Runnin without o2 fuses in