: Northstar Engines and System Technical Discussion



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