: Northstar Engines and System Technical Discussion



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  1. N* all OBDII?
  2. EGR Valve Cleaning and Location
  3. How To Replace O2 Sensor Bank 1 Sensor 1
  4. 93 Eldo transaxle
  5. Intake Bolts
  6. Fuel rail/line recall
  7. Saw an interesting Swap today.... (56k take a nap)
  8. Need some help from someone with a 96-99 manual
  9. Not enough WOTs?
  10. another problem solved! N* stutter gone
  11. Coolant Eats Gasket?
  12. Starter Idiocy?
  13. Have you tried Polyisobutylene ??
  14. How to Remove EGR Valve
  15. Granatelli Trans Tuner - Anyone try this?
  16. Granatelli Trans Tuner - Anyone try this?
  17. Performance Survey - New Owner - Seeking Ideas
  18. 94 STS - Throttle Plate Orientation
  19. cruise linkage
  20. 95 STS hi-rpm and auto-acceleration problem
  21. Data on the northstar
  22. Buy a N* with a blown head gasket - Dumb idea?
  23. Weird Idle Issues
  24. 1994 Concourse stuttering
  25. Cooling Fans
  26. Coolant supplement clogged T stat
  27. ghost in the machine
  28. Turbo STS Dyno results
  29. PCM Source
  30. 99 Deville misfire and fuel sensor
  31. Learning about Torque Convertor and solenoid
  32. Casper Electronics TPS Enhancer
  33. What year Nstars fit '99 Deville?
  34. Help:Crankshaft Sensor Replacement
  35. Torque convertor can damage the solenoids?
  36. What will it take to get you to buy a 80mm throttle body?
  37. Is this a "freeze plug"?
  38. Is this a 95 intake?
  39. Weird Hydraulic whine, maybe tranny????
  40. # 8 misfire
  41. where are the plugs on my 03 dhs northstar engine?
  42. Water Leak
  43. 4T80E vs Dexron VI, GM new standard
  44. 200,000 mile mark reality? 1996 STS NStar
  45. It wasnt a hole in the block!!!!!
  46. Just Bought a Granma owned NS w/81K-WOT?
  47. please help!?!?!?!?!
  48. High volt MAP
  49. Rough Idle and Stuttering Acceleration
  50. 94 seville sls oil pan gasket replacement...
  51. 97 headgaskets what else should be done?
  52. Differences in the Northstar engines
  53. PCM info for NorthStar
  54. accessing rear spark plugs
  55. 99 STS Turbo charged video
  56. 1994 Eldorado P083 Code?
  57. Looking for help with Codes
  58. What's this noise....
  59. How do you I.D. an engine?
  60. Expansion tank leaking...
  61. Engine ID
  62. 1994 eldorado fuel pump
  63. unchanged SP wires longevity?
  64. Launch Control for N* ignition
  65. coolant loss
  66. Can I fix my 01 Northstar myself?
  67. Turbo WOT 7psi to REDLINE
  68. 0101 MAF-continues
  69. Turbo Update
  70. changing out o2 sensor on 97 deville
  71. P0404 - Exhaust Gas Recirculation (EGR) Open Position Performance?
  72. deciphering DTC messages into plain English
  73. Cylinder Head Info!
  74. Northstar noise
  75. Best Code Reader/Scanner?
  76. EGR change w/ SS fuel rail- trick maybe
  77. Where is the INPUT SPEED SENSOR?
  78. 97 deville fuel problem
  79. GM coolant additive???
  80. Car wont start
  81. Serpentine belt
  82. no overdrive in my 98 eldo
  83. Really Head Gasket?
  84. New plugs and wires, now misfire
  85. STS Tranny trouble
  86. Improper Sparg plug gap, what happens?
  87. 94 STS hesitates or stumbles
  88. Need a Timesert kit
  89. its been a little while but i am back for good!!
  90. Stalls after fill-up
  91. High Oil Consumption *INFO*
  92. I got porked...Blown N*.
  93. Glowing red exhaust manifolds
  94. Pop Off / Backfire Valve Replacement
  95. fuel filter location?
  96. Pictures of Turbo Project
  97. Head gasket compressed thickness
  98. Emission Codes
  99. Extremely Rough Idle... Cracked Intake Manifold?
  100. Spark Plug Gap
  101. Biggest Problems with the N*'s?
  102. 1999 STS - Timesert question
  103. Gurgling Sound/ Trapped Air in Coolant System
  104. Injector
  105. 95 Deville howl's near the belt
  106. 97 deville N* head gasket costs?????
  107. No overdive
  108. Emmissions Codes
  109. One gear, LIMP MODE? NO CODES
  110. 2000 Deville TCC PWM replacement
  111. p056
  112. 98 Northstar Fuel Rail Recall
  113. Removing bad FPR
  114. '95 Eldorado start-up getting more "difficult"
  115. 93 Northstar Headgasket - Can I do it myself?
  116. Reliability and longevity of a 97 N* motor?
  117. Gas-saving gadgets article
  118. Crank Position Sensor
  119. 1993 1994 Northstar Intake Manifold
  120. How do I spot a head gasket starting to go?
  121. 97 deville radiator drain
  122. N* with code p041
  123. Intake mod
  124. Cold Start Backfire from 97 N*?
  125. OBD2 computer interface
  126. Jasper Verses OEM
  127. 1996 Eldorado Codes
  128. Piston Slap ?
  129. P0420 Code
  130. Northstar oil pump
  131. N*4.6 vibration problem
  132. Cooling system question
  133. Need an engine teardown pic...
  134. Cam Cover Gasket / o-ring replacement
  135. changing altn
  136. Reflash PCM on 96
  137. Link From Consumer Affairs to Dexcool Lawsuit Atty.
  138. Timesert Kit Needed Asap!!!
  139. Failed Emissions Test- But No Codes
  140. fpr fpr
  141. 1999 Northstar with blown head gasket
  142. Water pump??
  143. plugs and wires
  144. Changed TPS on 95 STS d/t P020, now MIL & P080
  145. throttle body cleaning was the answer
  146. Now having trouble in a different way
  147. 200 Deville occasionally won't Idle when starting warm
  148. P1406 Code? EGR?
  149. idle relearn and isc adjust
  150. 1993 Fuel Psi regulator
  151. Cracked Engine Block in 2001 DeVille
  152. 93 -99 N* vs 2000 - 2004, which is better
  153. motor mount...and more
  154. 97 deville leakin trans fluid
  155. MAF replacement
  156. too hot and too cold
  157. Does anybody here have full access to TSB info at alldata?
  158. Overheat SOLVED ! Thank You Ranger & Others
  159. '95 Northstar 4.6 oil leak
  160. Northstar Blower Motor For Sale
  161. 96 Deville running hot
  162. 97 deville stalling, no codes
  163. Changing Spark Plugs- '99 STS
  164. 94 sls overheating,maybe...
  165. I see a lot of posts on supercharging a Northstar
  166. How to get more torque, 03-DTS
  167. Replace or fix
  168. Typical NOOB questions...
  169. Northstar intake manifold
  170. Northstar intake manifold
  171. hey zonie or ranger,
  172. Losing Coolant & Radiator Leakage
  173. ac delco plugs..<-1999 and 2000-> years, whats the difference?
  174. Delco VS Bosch Plug Wires
  175. Oil "Blow By"
  176. Coming 6 speed automatic
  177. WOT - is this the ONLY way to remove carbon buildup?
  178. New source for 80mm throttle bodies!
  179. Is It A Head Gasket???
  180. Jasper Engines
  181. Confused about spark plug type
  182. Surge Tank Design
  183. Stranded out of town!!!
  184. Speed limiter
  185. cams in a northstar
  186. acceleration troubles...
  187. Coolant crossover photos
  188. P0300 Vote!
  189. the best oil for the northstar engine
  190. No Start Please I Need Help!!
  191. 3 questions regarding the timesert job
  192. fuel air mixture
  193. Replacing O2s
  194. P056
  195. Northstar V. 4.9
  196. 97 northstar engine miss
  197. Engine oil leak
  198. IN Trouble Now losing coolant
  199. ice possible message...?
  200. 96 deville oil leak
  201. Replacing a Northstar with a LS1
  202. i cant stand this stalling, why does this happen?
  203. 94STS Blown Gasket Pics
  204. 96 deville
  205. all my problems help!!!!
  206. adding a fuel treatment
  207. Is it normal for...
  208. Surging at low revs and hard shift into 2nd
  209. couple of problems, only one code- AMP B1024
  210. You want DYNO graphs?
  211. 98' Deville Waterpump
  212. The best northstar engine?
  213. How can I avoid head gasket damage?
  214. 93 Northstar Stalls with no codes
  215. '92 Seville radio question
  216. "Clunk" noise at startup? Trans Problem? Help!!
  217. fuel treatment
  218. Code P0101
  219. P023 code on 95 Eldorado
  220. 93 Eldo intermittent no spark,no start
  221. Motor change
  222. Injector malfunction Help!!!!
  223. Mod questions for a 2000 DeVille
  224. Sounds like a bird chirping
  225. 97 deville hesiatation!!!!!
  226. '96 STS OverHeating
  227. Head Gasket on 99 STS
  228. Pcv
  229. 02 DTS, Crank Sensor and Gas Mileage question, HELP!
  230. New solenoid valve kit if anyone wants it
  231. Northstar barely running
  232. Curious about performance mods...
  233. please idlee problemss help!
  234. Self scanning OBD while driving
  235. WOT advice for new member
  236. N* 1994 compatible with 1995????
  237. Coolant level? '97 Deville
  238. p1860 and p0741 repair help
  239. White Exhaust
  240. I have a code that's not on my list of codes. (P069)
  241. IAT sensor
  242. it ran so good in the past
  243. Leak Back Pressure Incorrect
  244. Code P1406 - EGR Valve Pintle Position Circuit
  245. HELP Rear Exhaust Flange Bolt Removal
  246. 02 STS simple things to help performance
  247. Groaning sound.....waterpump?
  248. Installing TPS right now.....
  249. help changed engine
  250. Throttle Body Service...is it worth$$?