: Northstar Engines and System Technical Discussion



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  1. Is head gasket a common problem with sts
  2. Please Help!!!!!!!!!
  3. Im running with no suppliment....
  4. Whirring noise.....you thinks its the alternator?
  5. Wot?
  6. 5W30 vs 10W30, pre 2000 Northstar 84 degree weather
  7. Thermagasket, cylinder head repair goop
  8. Head Gasket Repair - DIY?
  9. 4T80E heartbreak with pictures
  10. N* Replacement
  11. Northstar Motor Mechanic From Dealer
  12. Fuel Pump 95 SLS
  13. Minor value cover (head cover) leaks???Concern???
  14. N* Head Gasket Job, What parts should i BUY
  15. Jasper Engines HEAT TAB
  16. Head Gaskets Again !?!?
  17. 96 deville codes/very sluggish start
  18. n* experts chime in
  19. NorthStar Supercharger!!!
  20. 1997 Deville Coolant Flush
  21. I think i got this Traction Control thing figured out!
  22. Northstar Brainteaser
  23. New Northstar in 2008? Ultra?
  24. Service Engine Light and history codes
  25. Whats code 94?
  26. DIY Replace Coolant for 94 STS
  27. Lower Crankcase Reseal
  28. PC0300 with troubleshoot. Coil Resistance?
  29. '94 Eldorado Coolant change. Help!
  30. Squeaking belt noise - Help!
  31. oil change timing
  32. changed FPR now P0507 code?
  33. need help with water pump.
  34. Fix it or not? Head Gasket.
  35. Future 1996 STS buyer
  36. update on Polyisobutylene
  37. So, I took it to Cottman........
  38. 03 DTS Major Tune Up
  39. Codes, Codes, and more codes....
  40. First WOT on Grandma Owned N*
  41. Tech Manual
  42. What are the performance number of the SLS,DHS
  43. 98 Seville engine mount
  44. N* all OBDII?
  45. EGR Valve Cleaning and Location
  46. How To Replace O2 Sensor Bank 1 Sensor 1
  47. 93 Eldo transaxle
  48. Intake Bolts
  49. Fuel rail/line recall
  50. Saw an interesting Swap today.... (56k take a nap)
  51. Need some help from someone with a 96-99 manual
  52. Not enough WOTs?
  53. another problem solved! N* stutter gone
  54. Coolant Eats Gasket?
  55. Starter Idiocy?
  56. Have you tried Polyisobutylene ??
  57. How to Remove EGR Valve
  58. Granatelli Trans Tuner - Anyone try this?
  59. Granatelli Trans Tuner - Anyone try this?
  60. Performance Survey - New Owner - Seeking Ideas
  61. 94 STS - Throttle Plate Orientation
  62. cruise linkage
  63. 95 STS hi-rpm and auto-acceleration problem
  64. Data on the northstar
  65. Buy a N* with a blown head gasket - Dumb idea?
  66. Weird Idle Issues
  67. 1994 Concourse stuttering
  68. Cooling Fans
  69. Coolant supplement clogged T stat
  70. ghost in the machine
  71. Turbo STS Dyno results
  72. PCM Source
  73. 99 Deville misfire and fuel sensor
  74. Learning about Torque Convertor and solenoid
  75. Casper Electronics TPS Enhancer
  76. What year Nstars fit '99 Deville?
  77. Help:Crankshaft Sensor Replacement
  78. Torque convertor can damage the solenoids?
  79. What will it take to get you to buy a 80mm throttle body?
  80. Is this a "freeze plug"?
  81. Is this a 95 intake?
  82. Weird Hydraulic whine, maybe tranny????
  83. # 8 misfire
  84. where are the plugs on my 03 dhs northstar engine?
  85. Water Leak
  86. 4T80E vs Dexron VI, GM new standard
  87. 200,000 mile mark reality? 1996 STS NStar
  88. It wasnt a hole in the block!!!!!
  89. Just Bought a Granma owned NS w/81K-WOT?
  90. please help!?!?!?!?!
  91. High volt MAP
  92. Rough Idle and Stuttering Acceleration
  93. 94 seville sls oil pan gasket replacement...
  94. 97 headgaskets what else should be done?
  95. Differences in the Northstar engines
  96. PCM info for NorthStar
  97. accessing rear spark plugs
  98. 99 STS Turbo charged video
  99. 1994 Eldorado P083 Code?
  100. Looking for help with Codes
  101. What's this noise....
  102. How do you I.D. an engine?
  103. Expansion tank leaking...
  104. Engine ID
  105. 1994 eldorado fuel pump
  106. unchanged SP wires longevity?
  107. Launch Control for N* ignition
  108. coolant loss
  109. Can I fix my 01 Northstar myself?
  110. Turbo WOT 7psi to REDLINE
  111. 0101 MAF-continues
  112. Turbo Update
  113. changing out o2 sensor on 97 deville
  114. P0404 - Exhaust Gas Recirculation (EGR) Open Position Performance?
  115. deciphering DTC messages into plain English
  116. Cylinder Head Info!
  117. Northstar noise
  118. Best Code Reader/Scanner?
  119. EGR change w/ SS fuel rail- trick maybe
  120. Where is the INPUT SPEED SENSOR?
  121. 97 deville fuel problem
  122. GM coolant additive???
  123. Car wont start
  124. Serpentine belt
  125. no overdrive in my 98 eldo
  126. Really Head Gasket?
  127. New plugs and wires, now misfire
  128. STS Tranny trouble
  129. Improper Sparg plug gap, what happens?
  130. 94 STS hesitates or stumbles
  131. Need a Timesert kit
  132. its been a little while but i am back for good!!
  133. Stalls after fill-up
  134. High Oil Consumption *INFO*
  135. I got porked...Blown N*.
  136. Glowing red exhaust manifolds
  137. Pop Off / Backfire Valve Replacement
  138. fuel filter location?
  139. Pictures of Turbo Project
  140. Head gasket compressed thickness
  141. Emission Codes
  142. Extremely Rough Idle... Cracked Intake Manifold?
  143. Spark Plug Gap
  144. Biggest Problems with the N*'s?
  145. 1999 STS - Timesert question
  146. Gurgling Sound/ Trapped Air in Coolant System
  147. Injector
  148. 95 Deville howl's near the belt
  149. 97 deville N* head gasket costs?????
  150. No overdive
  151. Emmissions Codes
  152. One gear, LIMP MODE? NO CODES
  153. 2000 Deville TCC PWM replacement
  154. p056
  155. 98 Northstar Fuel Rail Recall
  156. Removing bad FPR
  157. '95 Eldorado start-up getting more "difficult"
  158. 93 Northstar Headgasket - Can I do it myself?
  159. Reliability and longevity of a 97 N* motor?
  160. Gas-saving gadgets article
  161. Crank Position Sensor
  162. 1993 1994 Northstar Intake Manifold
  163. How do I spot a head gasket starting to go?
  164. 97 deville radiator drain
  165. N* with code p041
  166. Intake mod
  167. Cold Start Backfire from 97 N*?
  168. OBD2 computer interface
  169. Jasper Verses OEM
  170. 1996 Eldorado Codes
  171. Piston Slap ?
  172. P0420 Code
  173. Northstar oil pump
  174. N*4.6 vibration problem
  175. Cooling system question
  176. Need an engine teardown pic...
  177. Cam Cover Gasket / o-ring replacement
  178. changing altn
  179. Reflash PCM on 96
  180. Link From Consumer Affairs to Dexcool Lawsuit Atty.
  181. Timesert Kit Needed Asap!!!
  182. Failed Emissions Test- But No Codes
  183. fpr fpr
  184. 1999 Northstar with blown head gasket
  185. Water pump??
  186. plugs and wires
  187. Changed TPS on 95 STS d/t P020, now MIL & P080
  188. throttle body cleaning was the answer
  189. Now having trouble in a different way
  190. 200 Deville occasionally won't Idle when starting warm
  191. P1406 Code? EGR?
  192. idle relearn and isc adjust
  193. 1993 Fuel Psi regulator
  194. Cracked Engine Block in 2001 DeVille
  195. 93 -99 N* vs 2000 - 2004, which is better
  196. motor mount...and more
  197. 97 deville leakin trans fluid
  198. MAF replacement
  199. too hot and too cold
  200. Does anybody here have full access to TSB info at alldata?
  201. Overheat SOLVED ! Thank You Ranger & Others
  202. '95 Northstar 4.6 oil leak
  203. Northstar Blower Motor For Sale
  204. 96 Deville running hot
  205. 97 deville stalling, no codes
  206. Changing Spark Plugs- '99 STS
  207. 94 sls overheating,maybe...
  208. I see a lot of posts on supercharging a Northstar
  209. How to get more torque, 03-DTS
  210. Replace or fix
  211. Typical NOOB questions...
  212. Northstar intake manifold
  213. Northstar intake manifold
  214. hey zonie or ranger,
  215. Losing Coolant & Radiator Leakage
  216. ac delco plugs..<-1999 and 2000-> years, whats the difference?
  217. Delco VS Bosch Plug Wires
  218. Oil "Blow By"
  219. Coming 6 speed automatic
  220. WOT - is this the ONLY way to remove carbon buildup?
  221. New source for 80mm throttle bodies!
  222. Is It A Head Gasket???
  223. Jasper Engines
  224. Confused about spark plug type
  225. Surge Tank Design
  226. Stranded out of town!!!
  227. Speed limiter
  228. cams in a northstar
  229. acceleration troubles...
  230. Coolant crossover photos
  231. P0300 Vote!
  232. the best oil for the northstar engine
  233. No Start Please I Need Help!!
  234. 3 questions regarding the timesert job
  235. fuel air mixture
  236. Replacing O2s
  237. P056
  238. Northstar V. 4.9
  239. 97 northstar engine miss
  240. Engine oil leak
  241. IN Trouble Now losing coolant
  242. ice possible message...?
  243. 96 deville oil leak
  244. Replacing a Northstar with a LS1
  245. i cant stand this stalling, why does this happen?
  246. 94STS Blown Gasket Pics
  247. 96 deville
  248. all my problems help!!!!
  249. adding a fuel treatment
  250. Is it normal for...