: Northstar Engines and System Technical Discussion



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