: Northstar Engines and System Technical Discussion



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  1. What's happening to the messages display?
  2. Day after alternator replace, now I need a new belt...coincidence?
  3. block off EGR
  4. Transmisson monitor??
  5. Water pump leak??
  6. Will machined heads mess up the ECU due to increased compression ?
  7. The Turbonator
  8. 96 STS engine swap
  9. Ok explain this.............
  10. Oil on sparkplugs??
  11. need help 96 deville
  12. North Star Temperature
  13. History Codes ??? & P0420
  14. VSS....how hard is it to change?
  15. Engine is not cranking - starter is fine
  16. Oil Leak
  17. Is head gasket a common problem with sts
  18. Please Help!!!!!!!!!
  19. Im running with no suppliment....
  20. Whirring noise.....you thinks its the alternator?
  21. Wot?
  22. 5W30 vs 10W30, pre 2000 Northstar 84 degree weather
  23. Thermagasket, cylinder head repair goop
  24. Head Gasket Repair - DIY?
  25. 4T80E heartbreak with pictures
  26. N* Replacement
  27. Northstar Motor Mechanic From Dealer
  28. Fuel Pump 95 SLS
  29. Minor value cover (head cover) leaks???Concern???
  30. N* Head Gasket Job, What parts should i BUY
  31. Jasper Engines HEAT TAB
  32. Head Gaskets Again !?!?
  33. 96 deville codes/very sluggish start
  34. n* experts chime in
  35. NorthStar Supercharger!!!
  36. 1997 Deville Coolant Flush
  37. I think i got this Traction Control thing figured out!
  38. Northstar Brainteaser
  39. New Northstar in 2008? Ultra?
  40. Service Engine Light and history codes
  41. Whats code 94?
  42. DIY Replace Coolant for 94 STS
  43. Lower Crankcase Reseal
  44. PC0300 with troubleshoot. Coil Resistance?
  45. '94 Eldorado Coolant change. Help!
  46. Squeaking belt noise - Help!
  47. oil change timing
  48. changed FPR now P0507 code?
  49. need help with water pump.
  50. Fix it or not? Head Gasket.
  51. Future 1996 STS buyer
  52. update on Polyisobutylene
  53. So, I took it to Cottman........
  54. 03 DTS Major Tune Up
  55. Codes, Codes, and more codes....
  56. First WOT on Grandma Owned N*
  57. Tech Manual
  58. What are the performance number of the SLS,DHS
  59. 98 Seville engine mount
  60. N* all OBDII?
  61. EGR Valve Cleaning and Location
  62. How To Replace O2 Sensor Bank 1 Sensor 1
  63. 93 Eldo transaxle
  64. Intake Bolts
  65. Fuel rail/line recall
  66. Saw an interesting Swap today.... (56k take a nap)
  67. Need some help from someone with a 96-99 manual
  68. Not enough WOTs?
  69. another problem solved! N* stutter gone
  70. Coolant Eats Gasket?
  71. Starter Idiocy?
  72. Have you tried Polyisobutylene ??
  73. How to Remove EGR Valve
  74. Granatelli Trans Tuner - Anyone try this?
  75. Granatelli Trans Tuner - Anyone try this?
  76. Performance Survey - New Owner - Seeking Ideas
  77. 94 STS - Throttle Plate Orientation
  78. cruise linkage
  79. 95 STS hi-rpm and auto-acceleration problem
  80. Data on the northstar
  81. Buy a N* with a blown head gasket - Dumb idea?
  82. Weird Idle Issues
  83. 1994 Concourse stuttering
  84. Cooling Fans
  85. Coolant supplement clogged T stat
  86. ghost in the machine
  87. Turbo STS Dyno results
  88. PCM Source
  89. 99 Deville misfire and fuel sensor
  90. Learning about Torque Convertor and solenoid
  91. Casper Electronics TPS Enhancer
  92. What year Nstars fit '99 Deville?
  93. Help:Crankshaft Sensor Replacement
  94. Torque convertor can damage the solenoids?
  95. What will it take to get you to buy a 80mm throttle body?
  96. Is this a "freeze plug"?
  97. Is this a 95 intake?
  98. Weird Hydraulic whine, maybe tranny????
  99. # 8 misfire
  100. where are the plugs on my 03 dhs northstar engine?
  101. Water Leak
  102. 4T80E vs Dexron VI, GM new standard
  103. 200,000 mile mark reality? 1996 STS NStar
  104. It wasnt a hole in the block!!!!!
  105. Just Bought a Granma owned NS w/81K-WOT?
  106. please help!?!?!?!?!
  107. High volt MAP
  108. Rough Idle and Stuttering Acceleration
  109. 94 seville sls oil pan gasket replacement...
  110. 97 headgaskets what else should be done?
  111. Differences in the Northstar engines
  112. PCM info for NorthStar
  113. accessing rear spark plugs
  114. 99 STS Turbo charged video
  115. 1994 Eldorado P083 Code?
  116. Looking for help with Codes
  117. What's this noise....
  118. How do you I.D. an engine?
  119. Expansion tank leaking...
  120. Engine ID
  121. 1994 eldorado fuel pump
  122. unchanged SP wires longevity?
  123. Launch Control for N* ignition
  124. coolant loss
  125. Can I fix my 01 Northstar myself?
  126. Turbo WOT 7psi to REDLINE
  127. 0101 MAF-continues
  128. Turbo Update
  129. changing out o2 sensor on 97 deville
  130. P0404 - Exhaust Gas Recirculation (EGR) Open Position Performance?
  131. deciphering DTC messages into plain English
  132. Cylinder Head Info!
  133. Northstar noise
  134. Best Code Reader/Scanner?
  135. EGR change w/ SS fuel rail- trick maybe
  136. Where is the INPUT SPEED SENSOR?
  137. 97 deville fuel problem
  138. GM coolant additive???
  139. Car wont start
  140. Serpentine belt
  141. no overdrive in my 98 eldo
  142. Really Head Gasket?
  143. New plugs and wires, now misfire
  144. STS Tranny trouble
  145. Improper Sparg plug gap, what happens?
  146. 94 STS hesitates or stumbles
  147. Need a Timesert kit
  148. its been a little while but i am back for good!!
  149. Stalls after fill-up
  150. High Oil Consumption *INFO*
  151. I got porked...Blown N*.
  152. Glowing red exhaust manifolds
  153. Pop Off / Backfire Valve Replacement
  154. fuel filter location?
  155. Pictures of Turbo Project
  156. Head gasket compressed thickness
  157. Emission Codes
  158. Extremely Rough Idle... Cracked Intake Manifold?
  159. Spark Plug Gap
  160. Biggest Problems with the N*'s?
  161. 1999 STS - Timesert question
  162. Gurgling Sound/ Trapped Air in Coolant System
  163. Injector
  164. 95 Deville howl's near the belt
  165. 97 deville N* head gasket costs?????
  166. No overdive
  167. Emmissions Codes
  168. One gear, LIMP MODE? NO CODES
  169. 2000 Deville TCC PWM replacement
  170. p056
  171. 98 Northstar Fuel Rail Recall
  172. Removing bad FPR
  173. '95 Eldorado start-up getting more "difficult"
  174. 93 Northstar Headgasket - Can I do it myself?
  175. Reliability and longevity of a 97 N* motor?
  176. Gas-saving gadgets article
  177. Crank Position Sensor
  178. 1993 1994 Northstar Intake Manifold
  179. How do I spot a head gasket starting to go?
  180. 97 deville radiator drain
  181. N* with code p041
  182. Intake mod
  183. Cold Start Backfire from 97 N*?
  184. OBD2 computer interface
  185. Jasper Verses OEM
  186. 1996 Eldorado Codes
  187. Piston Slap ?
  188. P0420 Code
  189. Northstar oil pump
  190. N*4.6 vibration problem
  191. Cooling system question
  192. Need an engine teardown pic...
  193. Cam Cover Gasket / o-ring replacement
  194. changing altn
  195. Reflash PCM on 96
  196. Link From Consumer Affairs to Dexcool Lawsuit Atty.
  197. Timesert Kit Needed Asap!!!
  198. Failed Emissions Test- But No Codes
  199. fpr fpr
  200. 1999 Northstar with blown head gasket
  201. Water pump??
  202. plugs and wires
  203. Changed TPS on 95 STS d/t P020, now MIL & P080
  204. throttle body cleaning was the answer
  205. Now having trouble in a different way
  206. 200 Deville occasionally won't Idle when starting warm
  207. P1406 Code? EGR?
  208. idle relearn and isc adjust
  209. 1993 Fuel Psi regulator
  210. Cracked Engine Block in 2001 DeVille
  211. 93 -99 N* vs 2000 - 2004, which is better
  212. motor mount...and more
  213. 97 deville leakin trans fluid
  214. MAF replacement
  215. too hot and too cold
  216. Does anybody here have full access to TSB info at alldata?
  217. Overheat SOLVED ! Thank You Ranger & Others
  218. '95 Northstar 4.6 oil leak
  219. Northstar Blower Motor For Sale
  220. 96 Deville running hot
  221. 97 deville stalling, no codes
  222. Changing Spark Plugs- '99 STS
  223. 94 sls overheating,maybe...
  224. I see a lot of posts on supercharging a Northstar
  225. How to get more torque, 03-DTS
  226. Replace or fix
  227. Typical NOOB questions...
  228. Northstar intake manifold
  229. Northstar intake manifold
  230. hey zonie or ranger,
  231. Losing Coolant & Radiator Leakage
  232. ac delco plugs..<-1999 and 2000-> years, whats the difference?
  233. Delco VS Bosch Plug Wires
  234. Oil "Blow By"
  235. Coming 6 speed automatic
  236. WOT - is this the ONLY way to remove carbon buildup?
  237. New source for 80mm throttle bodies!
  238. Is It A Head Gasket???
  239. Jasper Engines
  240. Confused about spark plug type
  241. Surge Tank Design
  242. Stranded out of town!!!
  243. Speed limiter
  244. cams in a northstar
  245. acceleration troubles...
  246. Coolant crossover photos
  247. P0300 Vote!
  248. the best oil for the northstar engine
  249. No Start Please I Need Help!!
  250. 3 questions regarding the timesert job