: Northstar Engines and System Technical Discussion



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  1. coolant loss
  2. Can I fix my 01 Northstar myself?
  3. Turbo WOT 7psi to REDLINE
  4. 0101 MAF-continues
  5. Turbo Update
  6. changing out o2 sensor on 97 deville
  7. P0404 - Exhaust Gas Recirculation (EGR) Open Position Performance?
  8. deciphering DTC messages into plain English
  9. Cylinder Head Info!
  10. Northstar noise
  11. Best Code Reader/Scanner?
  12. EGR change w/ SS fuel rail- trick maybe
  13. Where is the INPUT SPEED SENSOR?
  14. 97 deville fuel problem
  15. GM coolant additive???
  16. Car wont start
  17. Serpentine belt
  18. no overdrive in my 98 eldo
  19. Really Head Gasket?
  20. New plugs and wires, now misfire
  21. STS Tranny trouble
  22. Improper Sparg plug gap, what happens?
  23. 94 STS hesitates or stumbles
  24. Need a Timesert kit
  25. its been a little while but i am back for good!!
  26. Stalls after fill-up
  27. High Oil Consumption *INFO*
  28. I got porked...Blown N*.
  29. Glowing red exhaust manifolds
  30. Pop Off / Backfire Valve Replacement
  31. fuel filter location?
  32. Pictures of Turbo Project
  33. Head gasket compressed thickness
  34. Emission Codes
  35. Extremely Rough Idle... Cracked Intake Manifold?
  36. Spark Plug Gap
  37. Biggest Problems with the N*'s?
  38. 1999 STS - Timesert question
  39. Gurgling Sound/ Trapped Air in Coolant System
  40. Injector
  41. 95 Deville howl's near the belt
  42. 97 deville N* head gasket costs?????
  43. No overdive
  44. Emmissions Codes
  45. One gear, LIMP MODE? NO CODES
  46. 2000 Deville TCC PWM replacement
  47. p056
  48. 98 Northstar Fuel Rail Recall
  49. Removing bad FPR
  50. '95 Eldorado start-up getting more "difficult"
  51. 93 Northstar Headgasket - Can I do it myself?
  52. Reliability and longevity of a 97 N* motor?
  53. Gas-saving gadgets article
  54. Crank Position Sensor
  55. 1993 1994 Northstar Intake Manifold
  56. How do I spot a head gasket starting to go?
  57. 97 deville radiator drain
  58. N* with code p041
  59. Intake mod
  60. Cold Start Backfire from 97 N*?
  61. OBD2 computer interface
  62. Jasper Verses OEM
  63. 1996 Eldorado Codes
  64. Piston Slap ?
  65. P0420 Code
  66. Northstar oil pump
  67. N*4.6 vibration problem
  68. Cooling system question
  69. Need an engine teardown pic...
  70. Cam Cover Gasket / o-ring replacement
  71. changing altn
  72. Reflash PCM on 96
  73. Link From Consumer Affairs to Dexcool Lawsuit Atty.
  74. Timesert Kit Needed Asap!!!
  75. Failed Emissions Test- But No Codes
  76. fpr fpr
  77. 1999 Northstar with blown head gasket
  78. Water pump??
  79. plugs and wires
  80. Changed TPS on 95 STS d/t P020, now MIL & P080
  81. throttle body cleaning was the answer
  82. Now having trouble in a different way
  83. 200 Deville occasionally won't Idle when starting warm
  84. P1406 Code? EGR?
  85. idle relearn and isc adjust
  86. 1993 Fuel Psi regulator
  87. Cracked Engine Block in 2001 DeVille
  88. 93 -99 N* vs 2000 - 2004, which is better
  89. motor mount...and more
  90. 97 deville leakin trans fluid
  91. MAF replacement
  92. too hot and too cold
  93. Does anybody here have full access to TSB info at alldata?
  94. Overheat SOLVED ! Thank You Ranger & Others
  95. '95 Northstar 4.6 oil leak
  96. Northstar Blower Motor For Sale
  97. 96 Deville running hot
  98. 97 deville stalling, no codes
  99. Changing Spark Plugs- '99 STS
  100. 94 sls overheating,maybe...
  101. I see a lot of posts on supercharging a Northstar
  102. How to get more torque, 03-DTS
  103. Replace or fix
  104. Typical NOOB questions...
  105. Northstar intake manifold
  106. Northstar intake manifold
  107. hey zonie or ranger,
  108. Losing Coolant & Radiator Leakage
  109. ac delco plugs..<-1999 and 2000-> years, whats the difference?
  110. Delco VS Bosch Plug Wires
  111. Oil "Blow By"
  112. Coming 6 speed automatic
  113. WOT - is this the ONLY way to remove carbon buildup?
  114. New source for 80mm throttle bodies!
  115. Is It A Head Gasket???
  116. Jasper Engines
  117. Confused about spark plug type
  118. Surge Tank Design
  119. Stranded out of town!!!
  120. Speed limiter
  121. cams in a northstar
  122. acceleration troubles...
  123. Coolant crossover photos
  124. P0300 Vote!
  125. the best oil for the northstar engine
  126. No Start Please I Need Help!!
  127. 3 questions regarding the timesert job
  128. fuel air mixture
  129. Replacing O2s
  130. P056
  131. Northstar V. 4.9
  132. 97 northstar engine miss
  133. Engine oil leak
  134. IN Trouble Now losing coolant
  135. ice possible message...?
  136. 96 deville oil leak
  137. Replacing a Northstar with a LS1
  138. i cant stand this stalling, why does this happen?
  139. 94STS Blown Gasket Pics
  140. 96 deville
  141. all my problems help!!!!
  142. adding a fuel treatment
  143. Is it normal for...
  144. Surging at low revs and hard shift into 2nd
  145. couple of problems, only one code- AMP B1024
  146. You want DYNO graphs?
  147. 98' Deville Waterpump
  148. The best northstar engine?
  149. How can I avoid head gasket damage?
  150. 93 Northstar Stalls with no codes
  151. '92 Seville radio question
  152. "Clunk" noise at startup? Trans Problem? Help!!
  153. fuel treatment
  154. Code P0101
  155. P023 code on 95 Eldorado
  156. 93 Eldo intermittent no spark,no start
  157. Motor change
  158. Injector malfunction Help!!!!
  159. Mod questions for a 2000 DeVille
  160. Sounds like a bird chirping
  161. 97 deville hesiatation!!!!!
  162. '96 STS OverHeating
  163. Head Gasket on 99 STS
  164. Pcv
  165. 02 DTS, Crank Sensor and Gas Mileage question, HELP!
  166. New solenoid valve kit if anyone wants it
  167. Northstar barely running
  168. Curious about performance mods...
  169. please idlee problemss help!
  170. Self scanning OBD while driving
  171. WOT advice for new member
  172. N* 1994 compatible with 1995????
  173. Coolant level? '97 Deville
  174. p1860 and p0741 repair help
  175. White Exhaust
  176. I have a code that's not on my list of codes. (P069)
  177. IAT sensor
  178. it ran so good in the past
  179. Leak Back Pressure Incorrect
  180. Code P1406 - EGR Valve Pintle Position Circuit
  181. HELP Rear Exhaust Flange Bolt Removal
  182. 02 STS simple things to help performance
  183. Groaning sound.....waterpump?
  184. Installing TPS right now.....
  185. help changed engine
  186. Throttle Body Service...is it worth$$?
  187. Throttle Body Cleaning, worth the hassel?
  188. Coolant Drain Plugs On the N*
  189. codes codes and more codes
  190. service.gm.com password?
  191. years headgaskets go bad?
  192. coolant smell help!
  193. sudden stalling
  194. Dyno results before turbo charging
  195. 4.6 Northstar Parts
  196. Head Gasket Problem!!!
  197. Just had timeserts installed.
  198. oil leak
  199. Loosing Oil and Burning Smell
  200. need info on 1999 cadillac deville engine
  201. Carbon Deposit HELP FAST
  202. ABS Question/New Engine
  203. 3rd or 2nd gear for brake help
  204. O2 sensor
  205. No2 + N* ???
  206. Engine seems to be knocking
  207. No cruise driving me nuts!!!
  208. Throttle body bolt torque specs
  209. Bad Smoke Help Please
  210. Coolant Flushing Pros/Cons?
  211. Hot start...but not the FPR!
  212. failed emissions test
  213. Has anyone had a headgasket leak oil?
  214. Low Oil Pressure Stop Engine !
  215. Carbon Deposit cleaning TEC
  216. Performance Programer 97 ETC??
  217. Ram Air
  218. Surging when cold
  219. N* comp&performance mods
  220. Recall SS and FPR
  221. NS block warp?
  222. 97 Etc Cpu Mods Or Other N* Perfromance
  223. Head gasket leak after
  224. Corrupt Miles.
  225. Anyone dyno their Caddy?
  226. Rough Running 97 DeVille
  227. Northster Squeel/Whistle
  228. Sweet exhaust smell?
  229. supercharging a 4.6L Northstar
  230. engine died in acceleration! wont start.
  231. T/C cut out assembly
  232. N* feels shuddery
  233. Well, changed the oil....
  234. Starter failure???
  235. GM Remanufactured Transmission...has
  236. Heater core intake line
  237. Stays in open loop (?)
  238. P039 Torque Converter Clutch/Viscous Converter Clutch Engagement Problem
  239. Top End Setting?
  240. Code- P0442
  241. Tune-UP this weekend; questions..
  242. Is this possible ?
  243. P0151 02 Sensor Circuit Low Voltage (Bank 2 Sensor I
  244. This whole WOT thing....
  245. Fuel Pressure for a 95 STS?
  246. Should I Worry About WOT?
  247. Oil level sensor question?
  248. '97 NorthStar Coolant Temp
  249. 13mpg!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  250. P0139 - Heated Oxygen Sensor (HO2S) Slow Response Bank 1 Sensor 2