: Northstar Engines and System Technical Discussion



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  1. Cylinder leak-down test procedure (with percentage gauge)
  2. Coil Questions
  3. Purge Flow Problem
  4. Engine Cover?
  5. Modified Northstars - Need I say more?
  6. P0171 & P0174
  7. Anyone want a K&N air filter?
  8. Water in tailpipe, rough idle on start,
  9. Seville Engine replacement.
  10. Glasspacks
  11. 93 N* rough idle, no codes, loss power
  12. a/c compressor
  13. Contacted Fastchips
  14. 275vs300HP Eldo ESC/ETC
  15. GM Powertrain Information ".doc"
  16. '02 Deville Mods
  17. N* Ignition Module Pinout and Description?
  18. Excessive Idle RPM - Need advice
  19. bigserts
  20. Can you understand this?
  21. "New" Caddy, old leak?
  22. block swapping,crank sensors
  23. Tufoil?
  24. Northstart vs. 5.0
  25. MPG DROP - 22 to 17
  26. 94 Deville Concours- Idle in Drive Rough
  27. Should I use Dex-Cool?
  28. Dtc 420 & 1189
  29. Remote Start Killed My ICM!!?
  30. Where can you get headers for a Northstar?
  31. 02 Deville Sudden Stall
  32. light knocking... does not go away....
  33. 99 SLS runs funny
  34. Northstar 4.6 - coolant comes out rear exhaust manifold bolt hole
  35. AMSOIL in 96 STS with 88K
  36. Havoline?
  37. Replacement Air Filter
  38. Oil, Gasoline, N*'s, and long trips
  39. 96 SLS knock
  40. Crank sensor replacement
  41. Synthetic Blend?
  42. 93 STS N* P132 (E132) ... Knock Sensor Circuitry Failure
  43. Best Exhaust Upgrade for a 96 STS.
  44. N* Forged pistons
  45. N* crankshafts
  46. 96 STS overheating
  47. Looking for a core N*/Aurora V8 crank,,,
  48. Having a problem with 94 STS
  49. I Think I found my leak (Burning Oil Smell Cont.)
  50. Suspension Stability
  51. will '94 fuel injectors work in a '96?
  52. I miss the Bliss
  53. So much for your "bullet-proof" Northstar engines...
  54. 2000 sts read
  55. 97 deville overheated!!!
  56. What are these parts on my 95 Eldo?
  57. Sealing a radiator leak
  58. PCM P 0410 Secondary Air Injection System Malfunction
  59. Northstars in '95
  60. Reduced new engine power during breakin period?
  61. Boring out the N*?
  62. N* Ifr
  63. tuning software
  64. Pcm 0174
  65. Odc Ii
  66. ***New ROSS Pistons for a N* (WIth Ceramic Coating) $750***
  67. Alternator Replaced, Now Belt Squeaks, How to Fix?
  68. XLR's N* VVT rumble on startup and engine light.
  69. Quick question about a noise
  70. Help 06dts Mpg
  71. Zddp
  72. How deep do you go into motors and repairs
  73. Crank Position Sensor
  74. 94 STS cracked block
  75. Dex-cool?
  76. Performance chips
  77. It's Me again!
  78. CODES-I'm New-Check Engine light
  79. 96 SLS Head Gasket
  80. Serious help needed with 1995 northstar
  81. Cover up UGLY valve cover 95-99
  82. Who has the best warranty
  83. Annoying Tranny Whine
  84. Car just dies. Please help!
  85. service engine soon light
  86. 1993 STS running rough P053 Code
  87. 2000 Eldorado ETC Misfire #2
  88. Revisiting Airflow = Torque
  89. missed a time sert kit
  90. Newbie here and tryin to find my CKP
  91. Temperature Concerns
  92. Northstar- Starting, Running Problems
  93. 94 Seville intermittent hard start
  94. Engine miss
  95. sticker shock
  96. 9 codes today, i reckon a bad earth?
  97. oil change
  98. 70MPH pull.....
  99. reuse pistion rings?
  100. Engine Stall
  101. Contents of GM Top End Cleaner?
  102. OBDII Codes
  103. Iridium Spark plugs
  104. Oil Change
  105. Bar's Leaks J-120
  106. MAF Sensor
  107. cracked block pics
  108. possible Northstar PCM Programmer
  109. Export code
  110. Strange hole under ignition module
  111. Balls to the wall - N* style
  112. Timesert kit for sale
  113. Bank 2 identification
  114. Source of whining noise
  115. So many questions, so little time
  116. need help with p036 and p094
  117. Odin8 are you out there ?
  118. will '94 concours fuel injectors fit '96 sts?
  119. 1BadCaddy 94' STS update on power tune up.
  120. 4T80E Troubles?
  121. Coolant leak under throttle body area?
  122. After Shift Sol. Replacement...
  123. Safe amount of boos for stock motor?
  124. Found the reason why my car "jerks" during acceleration
  125. Head torque
  126. Ground Cable Location?
  127. Northstar leaking coolant....big time!
  128. Setting the timing gears and belts on 96 n* 4.6
  129. Help on hesitant start...
  130. New to forum, getting a caddy, some advice needed...
  131. Head gasket = overheat while driving or idling?
  132. Mini N*
  133. Tranny Prob, sheared pump shaft
  134. Twin Turbo N* powered 1948 Tucker
  135. cracked block
  136. Legit "Performance chip"?
  137. Missing Hose On Vacuum Purge Switch?
  138. N* water pump froze in housing
  139. coolant leak 00 sts
  140. 1990 Eldorado won't Start !
  141. started my headgasket job today
  142. is this normal or could this be my problem
  143. Anyone ever see this thing
  144. Sludge in my engine?
  145. WOT's northstar knock?
  146. STS Coolant Burping Air out of Coolant Question
  147. Oil leak
  148. N* rebuild....hmmm what to add to my mod list
  149. Keys to long lasting N*'s
  150. Complete engine overhaul, need help ASAP
  151. Cadillac Eldorado 1995 ER HELP NEEDED!!!
  152. Huge Problem, No Shop Can Fix!!!! Help!!!
  153. 04 STS misfires when idles, goes away when you floor it.
  154. northstar research thread pics 56k beware
  155. Exhaust size
  156. Plugs And Wires
  157. Which kind of FPR?
  158. 93 Seville?
  159. 96-99 motor wiring diagrams
  160. 91 Eldo STILL misses
  161. Torque vs Horsepower primer
  162. Crankshaft Position Sensor Replaced-Code Still Set P0385
  163. Water pump question on 94 STS
  164. Is it possible to lose HP
  165. Performance tune-up for 94 North*using performance coils.
  166. 97 N* Shaky idle
  167. 97 N8 port, polish and valve job
  168. Differance between 94 and 97 N*
  169. Question about the transmission fluid
  170. Northstar Misfire... no error codes
  171. More Horsepower
  172. Volant Review / So I did it without instructions.
  173. Tranny Prob, Please help!!
  174. High oil consumption (1 quart/week!!)
  175. A/C question/help for 94 STS
  176. Magnets Increase Mileage/Power??
  177. TC0047 Code
  178. Need some help installing Volant
  179. Add Engine Oil alert
  180. P1860... Problem
  181. loss of fuel pressure
  182. O2 sensor change, mpg improvement?
  183. Northstar heads(all) and ECU Chip(93-95). Real power!
  184. 97 deville-changing plugs and wires
  185. NS300L Insert kit
  186. Head gasket set
  187. Coolant Change?
  188. P0441... P0404... ?
  189. P0533... fuel gauge is going nuts
  190. Trans Solenoids??
  191. Timesert VS NS300L Insert System
  192. How much runout is okay?
  193. 95 concours stalling
  194. Looking for Timesert Kit
  195. '94 SLS oil pan / oil manifold / half case leaks
  196. Metal pipe coolant leak...'custom' fix???
  197. Engine apart, which direction does it crank?
  198. 94 Northstar with broken valve.
  199. Oil pressure emergency
  200. hesitation
  201. Timeserts
  202. '99 or '00 ETC?
  203. Fuel pump locking ring
  204. What else do I need to know after unhooking PCM
  205. coolant change
  206. Volant Install
  207. Rebuilt Northstars
  208. Found Rotella 10W-30 at O'Reilly auto parts
  209. PSA: Need sensors?
  210. 1999 Deville front suspension rattle
  211. 1996 Deville 4.6L Water Pump Replacement
  212. N* drive train weight
  213. felpro headgaskets
  214. N* 4.0 liter removal
  215. Smoke at startup?
  216. Whining Power Steering Pump
  217. Questions about servicing my 99 Deville
  218. Where 2 buy main and rod berings for 2004 N*
  219. Lady In Distress - '01 Northstar Intermittent Stalling & Not Starting - Clues Please?
  220. Anyone have HG pics? Not overheating but probs...
  221. Nitrous A/F findings & questions.
  222. 2 N* Questions - Coolent and Tranny Dipstick?
  223. 96 STS Head Gasket Story...
  224. cool Northstar info.
  225. Engine removal
  226. 96 Deville 4.6 North* overheating problem
  227. Hot Hot Hot Is Gone - Finally
  228. A couple Nasty Problems! HELP!
  229. How to change fuel injectors?
  230. Tips for replacing Crankshaft Position Sensors
  231. Oil pan gasket leak!
  232. Oil leak?
  233. left blinker not working when headlights on
  234. Lag in the transmission
  235. p1441 evap code help
  236. P043 -- headache -- what is happening???
  237. New here
  238. Differences in 275 & 300 HP Nstar
  239. Electric Turbo
  240. PCM swap???
  241. Northstar Blocks Cracking ?
  242. what is wrong w/ my n*
  243. Oxygen Sensors Grounding
  244. 94 Seville-Turn signals not working, smoking?
  245. trouble starting after timesert job - HELP!
  246. How do you Northstar owners like your Northstars? Would you recommend them?
  247. Northstar performance Upgrades!!!
  248. Northstar Engine Block STEEL CYL INSERTS
  249. a lil help please
  250. How do I tell if my headgasket was repaired?