: Northstar Engines and System Technical Discussion



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