: Northstar Engines and System Technical Discussion



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