: Northstar Engines and System Technical Discussion



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