: Northstar Engines and System Technical Discussion



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  1. Turbo WOT 7psi to REDLINE
  2. 0101 MAF-continues
  3. Turbo Update
  4. changing out o2 sensor on 97 deville
  5. P0404 - Exhaust Gas Recirculation (EGR) Open Position Performance?
  6. deciphering DTC messages into plain English
  7. Cylinder Head Info!
  8. Northstar noise
  9. Best Code Reader/Scanner?
  10. EGR change w/ SS fuel rail- trick maybe
  11. Where is the INPUT SPEED SENSOR?
  12. 97 deville fuel problem
  13. GM coolant additive???
  14. Car wont start
  15. Serpentine belt
  16. no overdrive in my 98 eldo
  17. Really Head Gasket?
  18. New plugs and wires, now misfire
  19. STS Tranny trouble
  20. Improper Sparg plug gap, what happens?
  21. 94 STS hesitates or stumbles
  22. Need a Timesert kit
  23. its been a little while but i am back for good!!
  24. Stalls after fill-up
  25. High Oil Consumption *INFO*
  26. I got porked...Blown N*.
  27. Glowing red exhaust manifolds
  28. Pop Off / Backfire Valve Replacement
  29. fuel filter location?
  30. Pictures of Turbo Project
  31. Head gasket compressed thickness
  32. Emission Codes
  33. Extremely Rough Idle... Cracked Intake Manifold?
  34. Spark Plug Gap
  35. Biggest Problems with the N*'s?
  36. 1999 STS - Timesert question
  37. Gurgling Sound/ Trapped Air in Coolant System
  38. Injector
  39. 95 Deville howl's near the belt
  40. 97 deville N* head gasket costs?????
  41. No overdive
  42. Emmissions Codes
  43. One gear, LIMP MODE? NO CODES
  44. 2000 Deville TCC PWM replacement
  45. p056
  46. 98 Northstar Fuel Rail Recall
  47. Removing bad FPR
  48. '95 Eldorado start-up getting more "difficult"
  49. 93 Northstar Headgasket - Can I do it myself?
  50. Reliability and longevity of a 97 N* motor?
  51. Gas-saving gadgets article
  52. Crank Position Sensor
  53. 1993 1994 Northstar Intake Manifold
  54. How do I spot a head gasket starting to go?
  55. 97 deville radiator drain
  56. N* with code p041
  57. Intake mod
  58. Cold Start Backfire from 97 N*?
  59. OBD2 computer interface
  60. Jasper Verses OEM
  61. 1996 Eldorado Codes
  62. Piston Slap ?
  63. P0420 Code
  64. Northstar oil pump
  65. N*4.6 vibration problem
  66. Cooling system question
  67. Need an engine teardown pic...
  68. Cam Cover Gasket / o-ring replacement
  69. changing altn
  70. Reflash PCM on 96
  71. Link From Consumer Affairs to Dexcool Lawsuit Atty.
  72. Timesert Kit Needed Asap!!!
  73. Failed Emissions Test- But No Codes
  74. fpr fpr
  75. 1999 Northstar with blown head gasket
  76. Water pump??
  77. plugs and wires
  78. Changed TPS on 95 STS d/t P020, now MIL & P080
  79. throttle body cleaning was the answer
  80. Now having trouble in a different way
  81. 200 Deville occasionally won't Idle when starting warm
  82. P1406 Code? EGR?
  83. idle relearn and isc adjust
  84. 1993 Fuel Psi regulator
  85. Cracked Engine Block in 2001 DeVille
  86. 93 -99 N* vs 2000 - 2004, which is better
  87. motor mount...and more
  88. 97 deville leakin trans fluid
  89. MAF replacement
  90. too hot and too cold
  91. Does anybody here have full access to TSB info at alldata?
  92. Overheat SOLVED ! Thank You Ranger & Others
  93. '95 Northstar 4.6 oil leak
  94. Northstar Blower Motor For Sale
  95. 96 Deville running hot
  96. 97 deville stalling, no codes
  97. Changing Spark Plugs- '99 STS
  98. 94 sls overheating,maybe...
  99. I see a lot of posts on supercharging a Northstar
  100. How to get more torque, 03-DTS
  101. Replace or fix
  102. Typical NOOB questions...
  103. Northstar intake manifold
  104. Northstar intake manifold
  105. hey zonie or ranger,
  106. Losing Coolant & Radiator Leakage
  107. ac delco plugs..<-1999 and 2000-> years, whats the difference?
  108. Delco VS Bosch Plug Wires
  109. Oil "Blow By"
  110. Coming 6 speed automatic
  111. WOT - is this the ONLY way to remove carbon buildup?
  112. New source for 80mm throttle bodies!
  113. Is It A Head Gasket???
  114. Jasper Engines
  115. Confused about spark plug type
  116. Surge Tank Design
  117. Stranded out of town!!!
  118. Speed limiter
  119. cams in a northstar
  120. acceleration troubles...
  121. Coolant crossover photos
  122. P0300 Vote!
  123. the best oil for the northstar engine
  124. No Start Please I Need Help!!
  125. 3 questions regarding the timesert job
  126. fuel air mixture
  127. Replacing O2s
  128. P056
  129. Northstar V. 4.9
  130. 97 northstar engine miss
  131. Engine oil leak
  132. IN Trouble Now losing coolant
  133. ice possible message...?
  134. 96 deville oil leak
  135. Replacing a Northstar with a LS1
  136. i cant stand this stalling, why does this happen?
  137. 94STS Blown Gasket Pics
  138. 96 deville
  139. all my problems help!!!!
  140. adding a fuel treatment
  141. Is it normal for...
  142. Surging at low revs and hard shift into 2nd
  143. couple of problems, only one code- AMP B1024
  144. You want DYNO graphs?
  145. 98' Deville Waterpump
  146. The best northstar engine?
  147. How can I avoid head gasket damage?
  148. 93 Northstar Stalls with no codes
  149. '92 Seville radio question
  150. "Clunk" noise at startup? Trans Problem? Help!!
  151. fuel treatment
  152. Code P0101
  153. P023 code on 95 Eldorado
  154. 93 Eldo intermittent no spark,no start
  155. Motor change
  156. Injector malfunction Help!!!!
  157. Mod questions for a 2000 DeVille
  158. Sounds like a bird chirping
  159. 97 deville hesiatation!!!!!
  160. '96 STS OverHeating
  161. Head Gasket on 99 STS
  162. Pcv
  163. 02 DTS, Crank Sensor and Gas Mileage question, HELP!
  164. New solenoid valve kit if anyone wants it
  165. Northstar barely running
  166. Curious about performance mods...
  167. please idlee problemss help!
  168. Self scanning OBD while driving
  169. WOT advice for new member
  170. N* 1994 compatible with 1995????
  171. Coolant level? '97 Deville
  172. p1860 and p0741 repair help
  173. White Exhaust
  174. I have a code that's not on my list of codes. (P069)
  175. IAT sensor
  176. it ran so good in the past
  177. Leak Back Pressure Incorrect
  178. Code P1406 - EGR Valve Pintle Position Circuit
  179. HELP Rear Exhaust Flange Bolt Removal
  180. 02 STS simple things to help performance
  181. Groaning sound.....waterpump?
  182. Installing TPS right now.....
  183. help changed engine
  184. Throttle Body Service...is it worth$$?
  185. Throttle Body Cleaning, worth the hassel?
  186. Coolant Drain Plugs On the N*
  187. codes codes and more codes
  188. service.gm.com password?
  189. years headgaskets go bad?
  190. coolant smell help!
  191. sudden stalling
  192. Dyno results before turbo charging
  193. 4.6 Northstar Parts
  194. Head Gasket Problem!!!
  195. Just had timeserts installed.
  196. oil leak
  197. Loosing Oil and Burning Smell
  198. need info on 1999 cadillac deville engine
  199. Carbon Deposit HELP FAST
  200. ABS Question/New Engine
  201. 3rd or 2nd gear for brake help
  202. O2 sensor
  203. No2 + N* ???
  204. Engine seems to be knocking
  205. No cruise driving me nuts!!!
  206. Throttle body bolt torque specs
  207. Bad Smoke Help Please
  208. Coolant Flushing Pros/Cons?
  209. Hot start...but not the FPR!
  210. failed emissions test
  211. Has anyone had a headgasket leak oil?
  212. Low Oil Pressure Stop Engine !
  213. Carbon Deposit cleaning TEC
  214. Performance Programer 97 ETC??
  215. Ram Air
  216. Surging when cold
  217. N* comp&performance mods
  218. Recall SS and FPR
  219. NS block warp?
  220. 97 Etc Cpu Mods Or Other N* Perfromance
  221. Head gasket leak after
  222. Corrupt Miles.
  223. Anyone dyno their Caddy?
  224. Rough Running 97 DeVille
  225. Northster Squeel/Whistle
  226. Sweet exhaust smell?
  227. supercharging a 4.6L Northstar
  228. engine died in acceleration! wont start.
  229. T/C cut out assembly
  230. N* feels shuddery
  231. Well, changed the oil....
  232. Starter failure???
  233. GM Remanufactured Transmission...has
  234. Heater core intake line
  235. Stays in open loop (?)
  236. P039 Torque Converter Clutch/Viscous Converter Clutch Engagement Problem
  237. Top End Setting?
  238. Code- P0442
  239. Tune-UP this weekend; questions..
  240. Is this possible ?
  241. P0151 02 Sensor Circuit Low Voltage (Bank 2 Sensor I
  242. This whole WOT thing....
  243. Fuel Pressure for a 95 STS?
  244. Should I Worry About WOT?
  245. Oil level sensor question?
  246. '97 NorthStar Coolant Temp
  247. 13mpg!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  248. P0139 - Heated Oxygen Sensor (HO2S) Slow Response Bank 1 Sensor 2
  249. throttle body cleaning
  250. Recommended fuel pressure + stalling