View Full Version : Northstar Performance and Technical Discussion


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  1. Oil change today after 12,735 since last oil change
  2. engine oil leaking
  3. So what would happen...
  4. A few questions about the 4.0 Northstar
  5. quick engine question
  6. 2000 STS Error Codes
  7. RSM Racing / No more?
  8. 01 Eldo - 100shot Nitrous - track results
  9. '94 SLS Idling to fast
  10. '94 STS is overheating
  11. keep losing coolant...hard to trace
  12. How do I tell if my headgasket was repaired?
  13. a lil help please
  14. Northstar Engine Block STEEL CYL INSERTS
  15. Northstar performance Upgrades!!!
  16. How do you Northstar owners like your Northstars? Would you recommend them?
  17. trouble starting after timesert job - HELP!
  18. 94 Seville-Turn signals not working, smoking?
  19. Oxygen Sensors Grounding
  20. what is wrong w/ my n*
  21. Northstar Blocks Cracking ?
  22. PCM swap???
  23. Electric Turbo
  24. Differences in 275 & 300 HP Nstar
  25. New here
  26. P043 -- headache -- what is happening???
  27. p1441 evap code help
  28. Lag in the transmission
  29. left blinker not working when headlights on
  30. Oil leak?
  31. Oil pan gasket leak!
  32. Tips for replacing Crankshaft Position Sensors
  33. How to change fuel injectors?
  34. A couple Nasty Problems! HELP!
  35. Hot Hot Hot Is Gone - Finally
  36. 96 Deville 4.6 North* overheating problem
  37. Engine removal
  38. cool Northstar info.
  39. 96 STS Head Gasket Story...
  40. 2 N* Questions - Coolent and Tranny Dipstick?
  41. Nitrous A/F findings & questions.
  42. Anyone have HG pics? Not overheating but probs...
  43. Lady In Distress - '01 Northstar Intermittent Stalling & Not Starting - Clues Please?
  44. Where 2 buy main and rod berings for 2004 N*
  45. Questions about servicing my 99 Deville
  46. Whining Power Steering Pump
  47. Smoke at startup?
  48. N* 4.0 liter removal
  49. felpro headgaskets
  50. N* drive train weight
  51. 1996 Deville 4.6L Water Pump Replacement
  52. 1999 Deville front suspension rattle
  53. PSA: Need sensors?
  54. Found Rotella 10W-30 at O'Reilly auto parts
  55. Rebuilt Northstars
  56. Volant Install
  57. coolant change
  58. What else do I need to know after unhooking PCM
  59. Fuel pump locking ring
  60. '99 or '00 ETC?
  61. Timeserts
  62. hesitation
  63. Oil pressure emergency
  64. 94 Northstar with broken valve.
  65. Engine apart, which direction does it crank?
  66. Metal pipe coolant leak...'custom' fix???
  67. '94 SLS oil pan / oil manifold / half case leaks
  68. Looking for Timesert Kit
  69. 95 concours stalling
  70. How much runout is okay?
  71. Timesert VS NS300L Insert System
  72. Trans Solenoids??
  73. P0533... fuel gauge is going nuts
  74. P0441... P0404... ?
  75. Coolant Change?
  76. Head gasket set
  77. NS300L Insert kit
  78. 97 deville-changing plugs and wires
  79. Northstar heads(all) and ECU Chip(93-95). Real power!
  80. O2 sensor change, mpg improvement?
  81. loss of fuel pressure
  82. P1860... Problem
  83. Add Engine Oil alert
  84. Need some help installing Volant
  85. TC0047 Code
  86. Magnets Increase Mileage/Power??
  87. A/C question/help for 94 STS
  88. High oil consumption (1 quart/week!!)
  89. Tranny Prob, Please help!!
  90. Volant Review / So I did it without instructions.
  91. More Horsepower
  92. Northstar Misfire... no error codes
  93. Question about the transmission fluid
  94. Differance between 94 and 97 N*
  95. 97 N8 port, polish and valve job
  96. Performance tune-up for 94 North*using performance coils.
  97. Is it possible to lose HP
  98. Water pump question on 94 STS
  99. Crankshaft Position Sensor Replaced-Code Still Set P0385
  100. Torque vs Horsepower primer
  101. 91 Eldo STILL misses
  102. 96-99 motor wiring diagrams
  103. 93 Seville?
  104. Which kind of FPR?
  105. Plugs And Wires
  106. Exhaust size
  107. northstar research thread pics 56k beware
  108. 04 STS misfires when idles, goes away when you floor it.
  109. Huge Problem, No Shop Can Fix!!!! Help!!!
  110. Cadillac Eldorado 1995 ER HELP NEEDED!!!
  111. Complete engine overhaul, need help ASAP
  112. Keys to long lasting N*'s
  113. N* rebuild....hmmm what to add to my mod list
  114. Oil leak
  115. STS Coolant Burping Air out of Coolant Question
  116. WOT's northstar knock?
  117. Sludge in my engine?
  118. Anyone ever see this thing
  119. is this normal or could this be my problem
  120. started my headgasket job today
  121. 1990 Eldorado won't Start !
  122. coolant leak 00 sts
  123. N* water pump froze in housing
  124. Missing Hose On Vacuum Purge Switch?
  125. Legit "Performance chip"?
  126. cracked block
  127. Twin Turbo N* powered 1948 Tucker
  128. Tranny Prob, sheared pump shaft
  129. Mini N*
  130. Head gasket = overheat while driving or idling?
  131. New to forum, getting a caddy, some advice needed...
  132. Help on hesitant start...
  133. Setting the timing gears and belts on 96 n* 4.6
  134. Northstar leaking coolant....big time!
  135. Ground Cable Location?
  136. Head torque
  137. Found the reason why my car "jerks" during acceleration
  138. Safe amount of boos for stock motor?
  139. After Shift Sol. Replacement...
  140. Coolant leak under throttle body area?
  141. 4T80E Troubles?
  142. 1BadCaddy 94' STS update on power tune up.
  143. will '94 concours fuel injectors fit '96 sts?
  144. Odin8 are you out there ?
  145. need help with p036 and p094
  146. So many questions, so little time
  147. Source of whining noise
  148. Bank 2 identification
  149. Timesert kit for sale
  150. Balls to the wall - N* style
  151. Strange hole under ignition module
  152. Export code
  153. possible Northstar PCM Programmer
  154. cracked block pics
  155. MAF Sensor
  156. Bar's Leaks J-120
  157. Oil Change
  158. Iridium Spark plugs
  159. OBDII Codes
  160. Contents of GM Top End Cleaner?
  161. Engine Stall
  162. reuse pistion rings?
  163. 70MPH pull.....
  164. oil change
  165. 9 codes today, i reckon a bad earth?
  166. sticker shock
  167. Engine miss
  168. 94 Seville intermittent hard start
  169. Northstar- Starting, Running Problems
  170. Temperature Concerns
  171. Newbie here and tryin to find my CKP
  172. missed a time sert kit
  173. Revisiting Airflow = Torque
  174. 2000 Eldorado ETC Misfire #2
  175. 1993 STS running rough P053 Code
  176. service engine soon light
  177. Car just dies. Please help!
  178. Annoying Tranny Whine
  179. Who has the best warranty
  180. Cover up UGLY valve cover 95-99
  181. Serious help needed with 1995 northstar
  182. 96 SLS Head Gasket
  183. CODES-I'm New-Check Engine light
  184. It's Me again!
  185. Performance chips
  186. Dex-cool?
  187. 94 STS cracked block
  188. Crank Position Sensor
  189. How deep do you go into motors and repairs
  190. Zddp
  191. Help 06dts Mpg
  192. Quick question about a noise
  193. XLR's N* VVT rumble on startup and engine light.
  194. Alternator Replaced, Now Belt Squeaks, How to Fix?
  195. ***New ROSS Pistons for a N* (WIth Ceramic Coating) $750***
  196. Odc Ii
  197. Pcm 0174
  198. tuning software
  199. N* Ifr
  200. Boring out the N*?
  201. Reduced new engine power during breakin period?
  202. Northstars in '95
  203. PCM P0410 Secondary Air Injection System Malfunction
  204. Sealing a radiator leak
  205. What are these parts on my 95 Eldo?
  206. 97 deville overheated!!!
  207. 2000 sts read
  208. So much for your "bullet-proof" Northstar engines...
  209. I miss the Bliss
  210. will '94 fuel injectors work in a '96?
  211. Suspension Stability
  212. I Think I found my leak (Burning Oil Smell Cont.)
  213. Having a problem with 94 STS
  214. Looking for a core N*/Aurora V8 crank,,,
  215. 96 STS overheating
  216. N* crankshafts
  217. N* Forged pistons
  218. Best Exhaust Upgrade for a 96 STS.
  219. 93 STS N* P132 (E132) ... Knock Sensor Circuitry Failure
  220. Synthetic Blend?
  221. Crank sensor replacement
  222. 96 SLS knock
  223. Oil, Gasoline, N*'s, and long trips
  224. Replacement Air Filter
  225. Havoline?
  226. AMSOIL in 96 STS with 88K
  227. Northstar 4.6 - coolant comes out rear exhaust manifold bolt hole
  228. 99 SLS runs funny
  229. light knocking... does not go away....
  230. 02 Deville Sudden Stall
  231. Where can you get headers for a Northstar?
  232. Remote Start Killed My ICM!!?
  233. Dtc 420 & 1189
  234. Should I use Dex-Cool?
  235. 94 Deville Concours- Idle in Drive Rough
  236. MPG DROP - 22 to 17
  237. Northstart vs. 5.0
  238. Tufoil?
  239. block swapping,crank sensors
  240. "New" Caddy, old leak?
  241. Can you understand this?
  242. bigserts
  243. Excessive Idle RPM - Need advice
  244. N* Ignition Module Pinout and Description?
  245. '02 Deville Mods
  246. GM Powertrain Information ".doc"
  247. 275vs300HP Eldo ESC/ETC
  248. Contacted Fastchips
  249. a/c compressor
  250. 93 N* rough idle, no codes, loss power