: Northstar Engines and System Technical Discussion



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  1. Expansion tank leaking...
  2. Engine ID
  3. 1994 eldorado fuel pump
  4. unchanged SP wires longevity?
  5. Launch Control for N* ignition
  6. coolant loss
  7. Can I fix my 01 Northstar myself?
  8. Turbo WOT 7psi to REDLINE
  9. 0101 MAF-continues
  10. Turbo Update
  11. changing out o2 sensor on 97 deville
  12. P0404 - Exhaust Gas Recirculation (EGR) Open Position Performance?
  13. deciphering DTC messages into plain English
  14. Cylinder Head Info!
  15. Northstar noise
  16. Best Code Reader/Scanner?
  17. EGR change w/ SS fuel rail- trick maybe
  18. Where is the INPUT SPEED SENSOR?
  19. 97 deville fuel problem
  20. GM coolant additive???
  21. Car wont start
  22. Serpentine belt
  23. no overdrive in my 98 eldo
  24. Really Head Gasket?
  25. New plugs and wires, now misfire
  26. STS Tranny trouble
  27. Improper Sparg plug gap, what happens?
  28. 94 STS hesitates or stumbles
  29. Need a Timesert kit
  30. its been a little while but i am back for good!!
  31. Stalls after fill-up
  32. High Oil Consumption *INFO*
  33. I got porked...Blown N*.
  34. Glowing red exhaust manifolds
  35. Pop Off / Backfire Valve Replacement
  36. fuel filter location?
  37. Pictures of Turbo Project
  38. Head gasket compressed thickness
  39. Emission Codes
  40. Extremely Rough Idle... Cracked Intake Manifold?
  41. Spark Plug Gap
  42. Biggest Problems with the N*'s?
  43. 1999 STS - Timesert question
  44. Gurgling Sound/ Trapped Air in Coolant System
  45. Injector
  46. 95 Deville howl's near the belt
  47. 97 deville N* head gasket costs?????
  48. No overdive
  49. Emmissions Codes
  50. One gear, LIMP MODE? NO CODES
  51. 2000 Deville TCC PWM replacement
  52. p056
  53. 98 Northstar Fuel Rail Recall
  54. Removing bad FPR
  55. '95 Eldorado start-up getting more "difficult"
  56. 93 Northstar Headgasket - Can I do it myself?
  57. Reliability and longevity of a 97 N* motor?
  58. Gas-saving gadgets article
  59. Crank Position Sensor
  60. 1993 1994 Northstar Intake Manifold
  61. How do I spot a head gasket starting to go?
  62. 97 deville radiator drain
  63. N* with code p041
  64. Intake mod
  65. Cold Start Backfire from 97 N*?
  66. OBD2 computer interface
  67. Jasper Verses OEM
  68. 1996 Eldorado Codes
  69. Piston Slap ?
  70. P0420 Code
  71. Northstar oil pump
  72. N*4.6 vibration problem
  73. Cooling system question
  74. Need an engine teardown pic...
  75. Cam Cover Gasket / o-ring replacement
  76. changing altn
  77. Reflash PCM on 96
  78. Link From Consumer Affairs to Dexcool Lawsuit Atty.
  79. Timesert Kit Needed Asap!!!
  80. Failed Emissions Test- But No Codes
  81. fpr fpr
  82. 1999 Northstar with blown head gasket
  83. Water pump??
  84. plugs and wires
  85. Changed TPS on 95 STS d/t P020, now MIL & P080
  86. throttle body cleaning was the answer
  87. Now having trouble in a different way
  88. 200 Deville occasionally won't Idle when starting warm
  89. P1406 Code? EGR?
  90. idle relearn and isc adjust
  91. 1993 Fuel Psi regulator
  92. Cracked Engine Block in 2001 DeVille
  93. 93 -99 N* vs 2000 - 2004, which is better
  94. motor mount...and more
  95. 97 deville leakin trans fluid
  96. MAF replacement
  97. too hot and too cold
  98. Does anybody here have full access to TSB info at alldata?
  99. Overheat SOLVED ! Thank You Ranger & Others
  100. '95 Northstar 4.6 oil leak
  101. Northstar Blower Motor For Sale
  102. 96 Deville running hot
  103. 97 deville stalling, no codes
  104. Changing Spark Plugs- '99 STS
  105. 94 sls overheating,maybe...
  106. I see a lot of posts on supercharging a Northstar
  107. How to get more torque, 03-DTS
  108. Replace or fix
  109. Typical NOOB questions...
  110. Northstar intake manifold
  111. Northstar intake manifold
  112. hey zonie or ranger,
  113. Losing Coolant & Radiator Leakage
  114. ac delco plugs..<-1999 and 2000-> years, whats the difference?
  115. Delco VS Bosch Plug Wires
  116. Oil "Blow By"
  117. Coming 6 speed automatic
  118. WOT - is this the ONLY way to remove carbon buildup?
  119. New source for 80mm throttle bodies!
  120. Is It A Head Gasket???
  121. Jasper Engines
  122. Confused about spark plug type
  123. Surge Tank Design
  124. Stranded out of town!!!
  125. Speed limiter
  126. cams in a northstar
  127. acceleration troubles...
  128. Coolant crossover photos
  129. P0300 Vote!
  130. the best oil for the northstar engine
  131. No Start Please I Need Help!!
  132. 3 questions regarding the timesert job
  133. fuel air mixture
  134. Replacing O2s
  135. P056
  136. Northstar V. 4.9
  137. 97 northstar engine miss
  138. Engine oil leak
  139. IN Trouble Now losing coolant
  140. ice possible message...?
  141. 96 deville oil leak
  142. Replacing a Northstar with a LS1
  143. i cant stand this stalling, why does this happen?
  144. 94STS Blown Gasket Pics
  145. 96 deville
  146. all my problems help!!!!
  147. adding a fuel treatment
  148. Is it normal for...
  149. Surging at low revs and hard shift into 2nd
  150. couple of problems, only one code- AMP B1024
  151. You want DYNO graphs?
  152. 98' Deville Waterpump
  153. The best northstar engine?
  154. How can I avoid head gasket damage?
  155. 93 Northstar Stalls with no codes
  156. '92 Seville radio question
  157. "Clunk" noise at startup? Trans Problem? Help!!
  158. fuel treatment
  159. Code P0101
  160. P023 code on 95 Eldorado
  161. 93 Eldo intermittent no spark,no start
  162. Motor change
  163. Injector malfunction Help!!!!
  164. Mod questions for a 2000 DeVille
  165. Sounds like a bird chirping
  166. 97 deville hesiatation!!!!!
  167. '96 STS OverHeating
  168. Head Gasket on 99 STS
  169. Pcv
  170. 02 DTS, Crank Sensor and Gas Mileage question, HELP!
  171. New solenoid valve kit if anyone wants it
  172. Northstar barely running
  173. Curious about performance mods...
  174. please idlee problemss help!
  175. Self scanning OBD while driving
  176. WOT advice for new member
  177. N* 1994 compatible with 1995????
  178. Coolant level? '97 Deville
  179. p1860 and p0741 repair help
  180. White Exhaust
  181. I have a code that's not on my list of codes. (P069)
  182. IAT sensor
  183. it ran so good in the past
  184. Leak Back Pressure Incorrect
  185. Code P1406 - EGR Valve Pintle Position Circuit
  186. HELP Rear Exhaust Flange Bolt Removal
  187. 02 STS simple things to help performance
  188. Groaning sound.....waterpump?
  189. Installing TPS right now.....
  190. help changed engine
  191. Throttle Body Service...is it worth$$?
  192. Throttle Body Cleaning, worth the hassel?
  193. Coolant Drain Plugs On the N*
  194. codes codes and more codes
  195. service.gm.com password?
  196. years headgaskets go bad?
  197. coolant smell help!
  198. sudden stalling
  199. Dyno results before turbo charging
  200. 4.6 Northstar Parts
  201. Head Gasket Problem!!!
  202. Just had timeserts installed.
  203. oil leak
  204. Loosing Oil and Burning Smell
  205. need info on 1999 cadillac deville engine
  206. Carbon Deposit HELP FAST
  207. ABS Question/New Engine
  208. 3rd or 2nd gear for brake help
  209. O2 sensor
  210. No2 + N* ???
  211. Engine seems to be knocking
  212. No cruise driving me nuts!!!
  213. Throttle body bolt torque specs
  214. Bad Smoke Help Please
  215. Coolant Flushing Pros/Cons?
  216. Hot start...but not the FPR!
  217. failed emissions test
  218. Has anyone had a headgasket leak oil?
  219. Low Oil Pressure Stop Engine !
  220. Carbon Deposit cleaning TEC
  221. Performance Programer 97 ETC??
  222. Ram Air
  223. Surging when cold
  224. N* comp&performance mods
  225. Recall SS and FPR
  226. NS block warp?
  227. 97 Etc Cpu Mods Or Other N* Perfromance
  228. Head gasket leak after
  229. Corrupt Miles.
  230. Anyone dyno their Caddy?
  231. Rough Running 97 DeVille
  232. Northster Squeel/Whistle
  233. Sweet exhaust smell?
  234. supercharging a 4.6L Northstar
  235. engine died in acceleration! wont start.
  236. T/C cut out assembly
  237. N* feels shuddery
  238. Well, changed the oil....
  239. Starter failure???
  240. GM Remanufactured Transmission...has
  241. Heater core intake line
  242. Stays in open loop (?)
  243. P039 Torque Converter Clutch/Viscous Converter Clutch Engagement Problem
  244. Top End Setting?
  245. Code- P0442
  246. Tune-UP this weekend; questions..
  247. Is this possible ?
  248. P0151 02 Sensor Circuit Low Voltage (Bank 2 Sensor I
  249. This whole WOT thing....
  250. Fuel Pressure for a 95 STS?