: Northstar Engines and System Technical Discussion



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  1. Rough Idle and Stuttering Acceleration
  2. 94 seville sls oil pan gasket replacement...
  3. 97 headgaskets what else should be done?
  4. Differences in the Northstar engines
  5. PCM info for NorthStar
  6. accessing rear spark plugs
  7. 99 STS Turbo charged video
  8. 1994 Eldorado P083 Code?
  9. Looking for help with Codes
  10. What's this noise....
  11. How do you I.D. an engine?
  12. Expansion tank leaking...
  13. Engine ID
  14. 1994 eldorado fuel pump
  15. unchanged SP wires longevity?
  16. Launch Control for N* ignition
  17. coolant loss
  18. Can I fix my 01 Northstar myself?
  19. Turbo WOT 7psi to REDLINE
  20. 0101 MAF-continues
  21. Turbo Update
  22. changing out o2 sensor on 97 deville
  23. P0404 - Exhaust Gas Recirculation (EGR) Open Position Performance?
  24. deciphering DTC messages into plain English
  25. Cylinder Head Info!
  26. Northstar noise
  27. Best Code Reader/Scanner?
  28. EGR change w/ SS fuel rail- trick maybe
  29. Where is the INPUT SPEED SENSOR?
  30. 97 deville fuel problem
  31. GM coolant additive???
  32. Car wont start
  33. Serpentine belt
  34. no overdrive in my 98 eldo
  35. Really Head Gasket?
  36. New plugs and wires, now misfire
  37. STS Tranny trouble
  38. Improper Sparg plug gap, what happens?
  39. 94 STS hesitates or stumbles
  40. Need a Timesert kit
  41. its been a little while but i am back for good!!
  42. Stalls after fill-up
  43. High Oil Consumption *INFO*
  44. I got porked...Blown N*.
  45. Glowing red exhaust manifolds
  46. Pop Off / Backfire Valve Replacement
  47. fuel filter location?
  48. Pictures of Turbo Project
  49. Head gasket compressed thickness
  50. Emission Codes
  51. Extremely Rough Idle... Cracked Intake Manifold?
  52. Spark Plug Gap
  53. Biggest Problems with the N*'s?
  54. 1999 STS - Timesert question
  55. Gurgling Sound/ Trapped Air in Coolant System
  56. Injector
  57. 95 Deville howl's near the belt
  58. 97 deville N* head gasket costs?????
  59. No overdive
  60. Emmissions Codes
  61. One gear, LIMP MODE? NO CODES
  62. 2000 Deville TCC PWM replacement
  63. p056
  64. 98 Northstar Fuel Rail Recall
  65. Removing bad FPR
  66. '95 Eldorado start-up getting more "difficult"
  67. 93 Northstar Headgasket - Can I do it myself?
  68. Reliability and longevity of a 97 N* motor?
  69. Gas-saving gadgets article
  70. Crank Position Sensor
  71. 1993 1994 Northstar Intake Manifold
  72. How do I spot a head gasket starting to go?
  73. 97 deville radiator drain
  74. N* with code p041
  75. Intake mod
  76. Cold Start Backfire from 97 N*?
  77. OBD2 computer interface
  78. Jasper Verses OEM
  79. 1996 Eldorado Codes
  80. Piston Slap ?
  81. P0420 Code
  82. Northstar oil pump
  83. N*4.6 vibration problem
  84. Cooling system question
  85. Need an engine teardown pic...
  86. Cam Cover Gasket / o-ring replacement
  87. changing altn
  88. Reflash PCM on 96
  89. Link From Consumer Affairs to Dexcool Lawsuit Atty.
  90. Timesert Kit Needed Asap!!!
  91. Failed Emissions Test- But No Codes
  92. fpr fpr
  93. 1999 Northstar with blown head gasket
  94. Water pump??
  95. plugs and wires
  96. Changed TPS on 95 STS d/t P020, now MIL & P080
  97. throttle body cleaning was the answer
  98. Now having trouble in a different way
  99. 200 Deville occasionally won't Idle when starting warm
  100. P1406 Code? EGR?
  101. idle relearn and isc adjust
  102. 1993 Fuel Psi regulator
  103. Cracked Engine Block in 2001 DeVille
  104. 93 -99 N* vs 2000 - 2004, which is better
  105. motor mount...and more
  106. 97 deville leakin trans fluid
  107. MAF replacement
  108. too hot and too cold
  109. Does anybody here have full access to TSB info at alldata?
  110. Overheat SOLVED ! Thank You Ranger & Others
  111. '95 Northstar 4.6 oil leak
  112. Northstar Blower Motor For Sale
  113. 96 Deville running hot
  114. 97 deville stalling, no codes
  115. Changing Spark Plugs- '99 STS
  116. 94 sls overheating,maybe...
  117. I see a lot of posts on supercharging a Northstar
  118. How to get more torque, 03-DTS
  119. Replace or fix
  120. Typical NOOB questions...
  121. Northstar intake manifold
  122. Northstar intake manifold
  123. hey zonie or ranger,
  124. Losing Coolant & Radiator Leakage
  125. ac delco plugs..<-1999 and 2000-> years, whats the difference?
  126. Delco VS Bosch Plug Wires
  127. Oil "Blow By"
  128. Coming 6 speed automatic
  129. WOT - is this the ONLY way to remove carbon buildup?
  130. New source for 80mm throttle bodies!
  131. Is It A Head Gasket???
  132. Jasper Engines
  133. Confused about spark plug type
  134. Surge Tank Design
  135. Stranded out of town!!!
  136. Speed limiter
  137. cams in a northstar
  138. acceleration troubles...
  139. Coolant crossover photos
  140. P0300 Vote!
  141. the best oil for the northstar engine
  142. No Start Please I Need Help!!
  143. 3 questions regarding the timesert job
  144. fuel air mixture
  145. Replacing O2s
  146. P056
  147. Northstar V. 4.9
  148. 97 northstar engine miss
  149. Engine oil leak
  150. IN Trouble Now losing coolant
  151. ice possible message...?
  152. 96 deville oil leak
  153. Replacing a Northstar with a LS1
  154. i cant stand this stalling, why does this happen?
  155. 94STS Blown Gasket Pics
  156. 96 deville
  157. all my problems help!!!!
  158. adding a fuel treatment
  159. Is it normal for...
  160. Surging at low revs and hard shift into 2nd
  161. couple of problems, only one code- AMP B1024
  162. You want DYNO graphs?
  163. 98' Deville Waterpump
  164. The best northstar engine?
  165. How can I avoid head gasket damage?
  166. 93 Northstar Stalls with no codes
  167. '92 Seville radio question
  168. "Clunk" noise at startup? Trans Problem? Help!!
  169. fuel treatment
  170. Code P0101
  171. P023 code on 95 Eldorado
  172. 93 Eldo intermittent no spark,no start
  173. Motor change
  174. Injector malfunction Help!!!!
  175. Mod questions for a 2000 DeVille
  176. Sounds like a bird chirping
  177. 97 deville hesiatation!!!!!
  178. '96 STS OverHeating
  179. Head Gasket on 99 STS
  180. Pcv
  181. 02 DTS, Crank Sensor and Gas Mileage question, HELP!
  182. New solenoid valve kit if anyone wants it
  183. Northstar barely running
  184. Curious about performance mods...
  185. please idlee problemss help!
  186. Self scanning OBD while driving
  187. WOT advice for new member
  188. N* 1994 compatible with 1995????
  189. Coolant level? '97 Deville
  190. p1860 and p0741 repair help
  191. White Exhaust
  192. I have a code that's not on my list of codes. (P069)
  193. IAT sensor
  194. it ran so good in the past
  195. Leak Back Pressure Incorrect
  196. Code P1406 - EGR Valve Pintle Position Circuit
  197. HELP Rear Exhaust Flange Bolt Removal
  198. 02 STS simple things to help performance
  199. Groaning sound.....waterpump?
  200. Installing TPS right now.....
  201. help changed engine
  202. Throttle Body Service...is it worth$$?
  203. Throttle Body Cleaning, worth the hassel?
  204. Coolant Drain Plugs On the N*
  205. codes codes and more codes
  206. service.gm.com password?
  207. years headgaskets go bad?
  208. coolant smell help!
  209. sudden stalling
  210. Dyno results before turbo charging
  211. 4.6 Northstar Parts
  212. Head Gasket Problem!!!
  213. Just had timeserts installed.
  214. oil leak
  215. Loosing Oil and Burning Smell
  216. need info on 1999 cadillac deville engine
  217. Carbon Deposit HELP FAST
  218. ABS Question/New Engine
  219. 3rd or 2nd gear for brake help
  220. O2 sensor
  221. No2 + N* ???
  222. Engine seems to be knocking
  223. No cruise driving me nuts!!!
  224. Throttle body bolt torque specs
  225. Bad Smoke Help Please
  226. Coolant Flushing Pros/Cons?
  227. Hot start...but not the FPR!
  228. failed emissions test
  229. Has anyone had a headgasket leak oil?
  230. Low Oil Pressure Stop Engine !
  231. Carbon Deposit cleaning TEC
  232. Performance Programer 97 ETC??
  233. Ram Air
  234. Surging when cold
  235. N* comp&performance mods
  236. Recall SS and FPR
  237. NS block warp?
  238. 97 Etc Cpu Mods Or Other N* Perfromance
  239. Head gasket leak after
  240. Corrupt Miles.
  241. Anyone dyno their Caddy?
  242. Rough Running 97 DeVille
  243. Northster Squeel/Whistle
  244. Sweet exhaust smell?
  245. supercharging a 4.6L Northstar
  246. engine died in acceleration! wont start.
  247. T/C cut out assembly
  248. N* feels shuddery
  249. Well, changed the oil....
  250. Starter failure???