: Northstar Engines and System Technical Discussion



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  1. Northstar Oil Leak
  2. Northstar in the 1997-1999 Deville.. questions.
  3. N* with nitrous.
  4. 5000 mile or wait for oil life trigger?
  5. Hi Flow Cat converter to go with Corsa Exhaust, which one?
  6. MSD coils? I hit 104
  7. eldorado1- throttle body for 94 eldo available?
  8. need IAC, TPS, MAP sensors?
  9. 4.6 caddy vs. olds 4.0
  10. Has anyone here added performance parts to a 94 eldorado
  11. Bad coil packs or what?
  12. northstar battery
  13. 94 eldorado bad starter possibly?
  14. Starter change 94 SLS
  15. What's happening to the messages display?
  16. Day after alternator replace, now I need a new belt...coincidence?
  17. block off EGR
  18. Transmisson monitor??
  19. Water pump leak??
  20. Will machined heads mess up the ECU due to increased compression ?
  21. The Turbonator
  22. 96 STS engine swap
  23. Ok explain this.............
  24. Oil on sparkplugs??
  25. need help 96 deville
  26. North Star Temperature
  27. History Codes ??? & P0420
  28. VSS....how hard is it to change?
  29. Engine is not cranking - starter is fine
  30. Oil Leak
  31. Is head gasket a common problem with sts
  32. Please Help!!!!!!!!!
  33. Im running with no suppliment....
  34. Whirring noise.....you thinks its the alternator?
  35. Wot?
  36. 5W30 vs 10W30, pre 2000 Northstar 84 degree weather
  37. Thermagasket, cylinder head repair goop
  38. Head Gasket Repair - DIY?
  39. 4T80E heartbreak with pictures
  40. N* Replacement
  41. Northstar Motor Mechanic From Dealer
  42. Fuel Pump 95 SLS
  43. Minor value cover (head cover) leaks???Concern???
  44. N* Head Gasket Job, What parts should i BUY
  45. Jasper Engines HEAT TAB
  46. Head Gaskets Again !?!?
  47. 96 deville codes/very sluggish start
  48. n* experts chime in
  49. NorthStar Supercharger!!!
  50. 1997 Deville Coolant Flush
  51. I think i got this Traction Control thing figured out!
  52. Northstar Brainteaser
  53. New Northstar in 2008? Ultra?
  54. Service Engine Light and history codes
  55. Whats code 94?
  56. DIY Replace Coolant for 94 STS
  57. Lower Crankcase Reseal
  58. PC0300 with troubleshoot. Coil Resistance?
  59. '94 Eldorado Coolant change. Help!
  60. Squeaking belt noise - Help!
  61. oil change timing
  62. changed FPR now P0507 code?
  63. need help with water pump.
  64. Fix it or not? Head Gasket.
  65. Future 1996 STS buyer
  66. update on Polyisobutylene
  67. So, I took it to Cottman........
  68. 03 DTS Major Tune Up
  69. Codes, Codes, and more codes....
  70. First WOT on Grandma Owned N*
  71. Tech Manual
  72. What are the performance number of the SLS,DHS
  73. 98 Seville engine mount
  74. N* all OBDII?
  75. EGR Valve Cleaning and Location
  76. How To Replace O2 Sensor Bank 1 Sensor 1
  77. 93 Eldo transaxle
  78. Intake Bolts
  79. Fuel rail/line recall
  80. Saw an interesting Swap today.... (56k take a nap)
  81. Need some help from someone with a 96-99 manual
  82. Not enough WOTs?
  83. another problem solved! N* stutter gone
  84. Coolant Eats Gasket?
  85. Starter Idiocy?
  86. Have you tried Polyisobutylene ??
  87. How to Remove EGR Valve
  88. Granatelli Trans Tuner - Anyone try this?
  89. Granatelli Trans Tuner - Anyone try this?
  90. Performance Survey - New Owner - Seeking Ideas
  91. 94 STS - Throttle Plate Orientation
  92. cruise linkage
  93. 95 STS hi-rpm and auto-acceleration problem
  94. Data on the northstar
  95. Buy a N* with a blown head gasket - Dumb idea?
  96. Weird Idle Issues
  97. 1994 Concourse stuttering
  98. Cooling Fans
  99. Coolant supplement clogged T stat
  100. ghost in the machine
  101. Turbo STS Dyno results
  102. PCM Source
  103. 99 Deville misfire and fuel sensor
  104. Learning about Torque Convertor and solenoid
  105. Casper Electronics TPS Enhancer
  106. What year Nstars fit '99 Deville?
  107. Help:Crankshaft Sensor Replacement
  108. Torque convertor can damage the solenoids?
  109. What will it take to get you to buy a 80mm throttle body?
  110. Is this a "freeze plug"?
  111. Is this a 95 intake?
  112. Weird Hydraulic whine, maybe tranny????
  113. # 8 misfire
  114. where are the plugs on my 03 dhs northstar engine?
  115. Water Leak
  116. 4T80E vs Dexron VI, GM new standard
  117. 200,000 mile mark reality? 1996 STS NStar
  118. It wasnt a hole in the block!!!!!
  119. Just Bought a Granma owned NS w/81K-WOT?
  120. please help!?!?!?!?!
  121. High volt MAP
  122. Rough Idle and Stuttering Acceleration
  123. 94 seville sls oil pan gasket replacement...
  124. 97 headgaskets what else should be done?
  125. Differences in the Northstar engines
  126. PCM info for NorthStar
  127. accessing rear spark plugs
  128. 99 STS Turbo charged video
  129. 1994 Eldorado P083 Code?
  130. Looking for help with Codes
  131. What's this noise....
  132. How do you I.D. an engine?
  133. Expansion tank leaking...
  134. Engine ID
  135. 1994 eldorado fuel pump
  136. unchanged SP wires longevity?
  137. Launch Control for N* ignition
  138. coolant loss
  139. Can I fix my 01 Northstar myself?
  140. Turbo WOT 7psi to REDLINE
  141. 0101 MAF-continues
  142. Turbo Update
  143. changing out o2 sensor on 97 deville
  144. P0404 - Exhaust Gas Recirculation (EGR) Open Position Performance?
  145. deciphering DTC messages into plain English
  146. Cylinder Head Info!
  147. Northstar noise
  148. Best Code Reader/Scanner?
  149. EGR change w/ SS fuel rail- trick maybe
  150. Where is the INPUT SPEED SENSOR?
  151. 97 deville fuel problem
  152. GM coolant additive???
  153. Car wont start
  154. Serpentine belt
  155. no overdrive in my 98 eldo
  156. Really Head Gasket?
  157. New plugs and wires, now misfire
  158. STS Tranny trouble
  159. Improper Sparg plug gap, what happens?
  160. 94 STS hesitates or stumbles
  161. Need a Timesert kit
  162. its been a little while but i am back for good!!
  163. Stalls after fill-up
  164. High Oil Consumption *INFO*
  165. I got porked...Blown N*.
  166. Glowing red exhaust manifolds
  167. Pop Off / Backfire Valve Replacement
  168. fuel filter location?
  169. Pictures of Turbo Project
  170. Head gasket compressed thickness
  171. Emission Codes
  172. Extremely Rough Idle... Cracked Intake Manifold?
  173. Spark Plug Gap
  174. Biggest Problems with the N*'s?
  175. 1999 STS - Timesert question
  176. Gurgling Sound/ Trapped Air in Coolant System
  177. Injector
  178. 95 Deville howl's near the belt
  179. 97 deville N* head gasket costs?????
  180. No overdive
  181. Emmissions Codes
  182. One gear, LIMP MODE? NO CODES
  183. 2000 Deville TCC PWM replacement
  184. p056
  185. 98 Northstar Fuel Rail Recall
  186. Removing bad FPR
  187. '95 Eldorado start-up getting more "difficult"
  188. 93 Northstar Headgasket - Can I do it myself?
  189. Reliability and longevity of a 97 N* motor?
  190. Gas-saving gadgets article
  191. Crank Position Sensor
  192. 1993 1994 Northstar Intake Manifold
  193. How do I spot a head gasket starting to go?
  194. 97 deville radiator drain
  195. N* with code p041
  196. Intake mod
  197. Cold Start Backfire from 97 N*?
  198. OBD2 computer interface
  199. Jasper Verses OEM
  200. 1996 Eldorado Codes
  201. Piston Slap ?
  202. P0420 Code
  203. Northstar oil pump
  204. N*4.6 vibration problem
  205. Cooling system question
  206. Need an engine teardown pic...
  207. Cam Cover Gasket / o-ring replacement
  208. changing altn
  209. Reflash PCM on 96
  210. Link From Consumer Affairs to Dexcool Lawsuit Atty.
  211. Timesert Kit Needed Asap!!!
  212. Failed Emissions Test- But No Codes
  213. fpr fpr
  214. 1999 Northstar with blown head gasket
  215. Water pump??
  216. plugs and wires
  217. Changed TPS on 95 STS d/t P020, now MIL & P080
  218. throttle body cleaning was the answer
  219. Now having trouble in a different way
  220. 200 Deville occasionally won't Idle when starting warm
  221. P1406 Code? EGR?
  222. idle relearn and isc adjust
  223. 1993 Fuel Psi regulator
  224. Cracked Engine Block in 2001 DeVille
  225. 93 -99 N* vs 2000 - 2004, which is better
  226. motor mount...and more
  227. 97 deville leakin trans fluid
  228. MAF replacement
  229. too hot and too cold
  230. Does anybody here have full access to TSB info at alldata?
  231. Overheat SOLVED ! Thank You Ranger & Others
  232. '95 Northstar 4.6 oil leak
  233. Northstar Blower Motor For Sale
  234. 96 Deville running hot
  235. 97 deville stalling, no codes
  236. Changing Spark Plugs- '99 STS
  237. 94 sls overheating,maybe...
  238. I see a lot of posts on supercharging a Northstar
  239. How to get more torque, 03-DTS
  240. Replace or fix
  241. Typical NOOB questions...
  242. Northstar intake manifold
  243. Northstar intake manifold
  244. hey zonie or ranger,
  245. Losing Coolant & Radiator Leakage
  246. ac delco plugs..<-1999 and 2000-> years, whats the difference?
  247. Delco VS Bosch Plug Wires
  248. Oil "Blow By"
  249. Coming 6 speed automatic
  250. WOT - is this the ONLY way to remove carbon buildup?