: Northstar Engines and System Technical Discussion



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  1. '94 Eldorado Coolant change. Help!
  2. Squeaking belt noise - Help!
  3. oil change timing
  4. changed FPR now P0507 code?
  5. need help with water pump.
  6. Fix it or not? Head Gasket.
  7. Future 1996 STS buyer
  8. update on Polyisobutylene
  9. So, I took it to Cottman........
  10. 03 DTS Major Tune Up
  11. Codes, Codes, and more codes....
  12. First WOT on Grandma Owned N*
  13. Tech Manual
  14. What are the performance number of the SLS,DHS
  15. 98 Seville engine mount
  16. N* all OBDII?
  17. EGR Valve Cleaning and Location
  18. How To Replace O2 Sensor Bank 1 Sensor 1
  19. 93 Eldo transaxle
  20. Intake Bolts
  21. Fuel rail/line recall
  22. Saw an interesting Swap today.... (56k take a nap)
  23. Need some help from someone with a 96-99 manual
  24. Not enough WOTs?
  25. another problem solved! N* stutter gone
  26. Coolant Eats Gasket?
  27. Starter Idiocy?
  28. Have you tried Polyisobutylene ??
  29. How to Remove EGR Valve
  30. Granatelli Trans Tuner - Anyone try this?
  31. Granatelli Trans Tuner - Anyone try this?
  32. Performance Survey - New Owner - Seeking Ideas
  33. 94 STS - Throttle Plate Orientation
  34. cruise linkage
  35. 95 STS hi-rpm and auto-acceleration problem
  36. Data on the northstar
  37. Buy a N* with a blown head gasket - Dumb idea?
  38. Weird Idle Issues
  39. 1994 Concourse stuttering
  40. Cooling Fans
  41. Coolant supplement clogged T stat
  42. ghost in the machine
  43. Turbo STS Dyno results
  44. PCM Source
  45. 99 Deville misfire and fuel sensor
  46. Learning about Torque Convertor and solenoid
  47. Casper Electronics TPS Enhancer
  48. What year Nstars fit '99 Deville?
  49. Help:Crankshaft Sensor Replacement
  50. Torque convertor can damage the solenoids?
  51. What will it take to get you to buy a 80mm throttle body?
  52. Is this a "freeze plug"?
  53. Is this a 95 intake?
  54. Weird Hydraulic whine, maybe tranny????
  55. # 8 misfire
  56. where are the plugs on my 03 dhs northstar engine?
  57. Water Leak
  58. 4T80E vs Dexron VI, GM new standard
  59. 200,000 mile mark reality? 1996 STS NStar
  60. It wasnt a hole in the block!!!!!
  61. Just Bought a Granma owned NS w/81K-WOT?
  62. please help!?!?!?!?!
  63. High volt MAP
  64. Rough Idle and Stuttering Acceleration
  65. 94 seville sls oil pan gasket replacement...
  66. 97 headgaskets what else should be done?
  67. Differences in the Northstar engines
  68. PCM info for NorthStar
  69. accessing rear spark plugs
  70. 99 STS Turbo charged video
  71. 1994 Eldorado P083 Code?
  72. Looking for help with Codes
  73. What's this noise....
  74. How do you I.D. an engine?
  75. Expansion tank leaking...
  76. Engine ID
  77. 1994 eldorado fuel pump
  78. unchanged SP wires longevity?
  79. Launch Control for N* ignition
  80. coolant loss
  81. Can I fix my 01 Northstar myself?
  82. Turbo WOT 7psi to REDLINE
  83. 0101 MAF-continues
  84. Turbo Update
  85. changing out o2 sensor on 97 deville
  86. P0404 - Exhaust Gas Recirculation (EGR) Open Position Performance?
  87. deciphering DTC messages into plain English
  88. Cylinder Head Info!
  89. Northstar noise
  90. Best Code Reader/Scanner?
  91. EGR change w/ SS fuel rail- trick maybe
  92. Where is the INPUT SPEED SENSOR?
  93. 97 deville fuel problem
  94. GM coolant additive???
  95. Car wont start
  96. Serpentine belt
  97. no overdrive in my 98 eldo
  98. Really Head Gasket?
  99. New plugs and wires, now misfire
  100. STS Tranny trouble
  101. Improper Sparg plug gap, what happens?
  102. 94 STS hesitates or stumbles
  103. Need a Timesert kit
  104. its been a little while but i am back for good!!
  105. Stalls after fill-up
  106. High Oil Consumption *INFO*
  107. I got porked...Blown N*.
  108. Glowing red exhaust manifolds
  109. Pop Off / Backfire Valve Replacement
  110. fuel filter location?
  111. Pictures of Turbo Project
  112. Head gasket compressed thickness
  113. Emission Codes
  114. Extremely Rough Idle... Cracked Intake Manifold?
  115. Spark Plug Gap
  116. Biggest Problems with the N*'s?
  117. 1999 STS - Timesert question
  118. Gurgling Sound/ Trapped Air in Coolant System
  119. Injector
  120. 95 Deville howl's near the belt
  121. 97 deville N* head gasket costs?????
  122. No overdive
  123. Emmissions Codes
  124. One gear, LIMP MODE? NO CODES
  125. 2000 Deville TCC PWM replacement
  126. p056
  127. 98 Northstar Fuel Rail Recall
  128. Removing bad FPR
  129. '95 Eldorado start-up getting more "difficult"
  130. 93 Northstar Headgasket - Can I do it myself?
  131. Reliability and longevity of a 97 N* motor?
  132. Gas-saving gadgets article
  133. Crank Position Sensor
  134. 1993 1994 Northstar Intake Manifold
  135. How do I spot a head gasket starting to go?
  136. 97 deville radiator drain
  137. N* with code p041
  138. Intake mod
  139. Cold Start Backfire from 97 N*?
  140. OBD2 computer interface
  141. Jasper Verses OEM
  142. 1996 Eldorado Codes
  143. Piston Slap ?
  144. P0420 Code
  145. Northstar oil pump
  146. N*4.6 vibration problem
  147. Cooling system question
  148. Need an engine teardown pic...
  149. Cam Cover Gasket / o-ring replacement
  150. changing altn
  151. Reflash PCM on 96
  152. Link From Consumer Affairs to Dexcool Lawsuit Atty.
  153. Timesert Kit Needed Asap!!!
  154. Failed Emissions Test- But No Codes
  155. fpr fpr
  156. 1999 Northstar with blown head gasket
  157. Water pump??
  158. plugs and wires
  159. Changed TPS on 95 STS d/t P020, now MIL & P080
  160. throttle body cleaning was the answer
  161. Now having trouble in a different way
  162. 200 Deville occasionally won't Idle when starting warm
  163. P1406 Code? EGR?
  164. idle relearn and isc adjust
  165. 1993 Fuel Psi regulator
  166. Cracked Engine Block in 2001 DeVille
  167. 93 -99 N* vs 2000 - 2004, which is better
  168. motor mount...and more
  169. 97 deville leakin trans fluid
  170. MAF replacement
  171. too hot and too cold
  172. Does anybody here have full access to TSB info at alldata?
  173. Overheat SOLVED ! Thank You Ranger & Others
  174. '95 Northstar 4.6 oil leak
  175. Northstar Blower Motor For Sale
  176. 96 Deville running hot
  177. 97 deville stalling, no codes
  178. Changing Spark Plugs- '99 STS
  179. 94 sls overheating,maybe...
  180. I see a lot of posts on supercharging a Northstar
  181. How to get more torque, 03-DTS
  182. Replace or fix
  183. Typical NOOB questions...
  184. Northstar intake manifold
  185. Northstar intake manifold
  186. hey zonie or ranger,
  187. Losing Coolant & Radiator Leakage
  188. ac delco plugs..<-1999 and 2000-> years, whats the difference?
  189. Delco VS Bosch Plug Wires
  190. Oil "Blow By"
  191. Coming 6 speed automatic
  192. WOT - is this the ONLY way to remove carbon buildup?
  193. New source for 80mm throttle bodies!
  194. Is It A Head Gasket???
  195. Jasper Engines
  196. Confused about spark plug type
  197. Surge Tank Design
  198. Stranded out of town!!!
  199. Speed limiter
  200. cams in a northstar
  201. acceleration troubles...
  202. Coolant crossover photos
  203. P0300 Vote!
  204. the best oil for the northstar engine
  205. No Start Please I Need Help!!
  206. 3 questions regarding the timesert job
  207. fuel air mixture
  208. Replacing O2s
  209. P056
  210. Northstar V. 4.9
  211. 97 northstar engine miss
  212. Engine oil leak
  213. IN Trouble Now losing coolant
  214. ice possible message...?
  215. 96 deville oil leak
  216. Replacing a Northstar with a LS1
  217. i cant stand this stalling, why does this happen?
  218. 94STS Blown Gasket Pics
  219. 96 deville
  220. all my problems help!!!!
  221. adding a fuel treatment
  222. Is it normal for...
  223. Surging at low revs and hard shift into 2nd
  224. couple of problems, only one code- AMP B1024
  225. You want DYNO graphs?
  226. 98' Deville Waterpump
  227. The best northstar engine?
  228. How can I avoid head gasket damage?
  229. 93 Northstar Stalls with no codes
  230. '92 Seville radio question
  231. "Clunk" noise at startup? Trans Problem? Help!!
  232. fuel treatment
  233. Code P0101
  234. P023 code on 95 Eldorado
  235. 93 Eldo intermittent no spark,no start
  236. Motor change
  237. Injector malfunction Help!!!!
  238. Mod questions for a 2000 DeVille
  239. Sounds like a bird chirping
  240. 97 deville hesiatation!!!!!
  241. '96 STS OverHeating
  242. Head Gasket on 99 STS
  243. Pcv
  244. 02 DTS, Crank Sensor and Gas Mileage question, HELP!
  245. New solenoid valve kit if anyone wants it
  246. Northstar barely running
  247. Curious about performance mods...
  248. please idlee problemss help!
  249. Self scanning OBD while driving
  250. WOT advice for new member