: Northstar Engines and System Technical Discussion



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  1. need IAC, TPS, MAP sensors?
  2. 4.6 caddy vs. olds 4.0
  3. Has anyone here added performance parts to a 94 eldorado
  4. Bad coil packs or what?
  5. northstar battery
  6. 94 eldorado bad starter possibly?
  7. Starter change 94 SLS
  8. What's happening to the messages display?
  9. Day after alternator replace, now I need a new belt...coincidence?
  10. block off EGR
  11. Transmisson monitor??
  12. Water pump leak??
  13. Will machined heads mess up the ECU due to increased compression ?
  14. The Turbonator
  15. 96 STS engine swap
  16. Ok explain this.............
  17. Oil on sparkplugs??
  18. need help 96 deville
  19. North Star Temperature
  20. History Codes ??? & P0420
  21. VSS....how hard is it to change?
  22. Engine is not cranking - starter is fine
  23. Oil Leak
  24. Is head gasket a common problem with sts
  25. Please Help!!!!!!!!!
  26. Im running with no suppliment....
  27. Whirring noise.....you thinks its the alternator?
  28. Wot?
  29. 5W30 vs 10W30, pre 2000 Northstar 84 degree weather
  30. Thermagasket, cylinder head repair goop
  31. Head Gasket Repair - DIY?
  32. 4T80E heartbreak with pictures
  33. N* Replacement
  34. Northstar Motor Mechanic From Dealer
  35. Fuel Pump 95 SLS
  36. Minor value cover (head cover) leaks???Concern???
  37. N* Head Gasket Job, What parts should i BUY
  38. Jasper Engines HEAT TAB
  39. Head Gaskets Again !?!?
  40. 96 deville codes/very sluggish start
  41. n* experts chime in
  42. NorthStar Supercharger!!!
  43. 1997 Deville Coolant Flush
  44. I think i got this Traction Control thing figured out!
  45. Northstar Brainteaser
  46. New Northstar in 2008? Ultra?
  47. Service Engine Light and history codes
  48. Whats code 94?
  49. DIY Replace Coolant for 94 STS
  50. Lower Crankcase Reseal
  51. PC0300 with troubleshoot. Coil Resistance?
  52. '94 Eldorado Coolant change. Help!
  53. Squeaking belt noise - Help!
  54. oil change timing
  55. changed FPR now P0507 code?
  56. need help with water pump.
  57. Fix it or not? Head Gasket.
  58. Future 1996 STS buyer
  59. update on Polyisobutylene
  60. So, I took it to Cottman........
  61. 03 DTS Major Tune Up
  62. Codes, Codes, and more codes....
  63. First WOT on Grandma Owned N*
  64. Tech Manual
  65. What are the performance number of the SLS,DHS
  66. 98 Seville engine mount
  67. N* all OBDII?
  68. EGR Valve Cleaning and Location
  69. How To Replace O2 Sensor Bank 1 Sensor 1
  70. 93 Eldo transaxle
  71. Intake Bolts
  72. Fuel rail/line recall
  73. Saw an interesting Swap today.... (56k take a nap)
  74. Need some help from someone with a 96-99 manual
  75. Not enough WOTs?
  76. another problem solved! N* stutter gone
  77. Coolant Eats Gasket?
  78. Starter Idiocy?
  79. Have you tried Polyisobutylene ??
  80. How to Remove EGR Valve
  81. Granatelli Trans Tuner - Anyone try this?
  82. Granatelli Trans Tuner - Anyone try this?
  83. Performance Survey - New Owner - Seeking Ideas
  84. 94 STS - Throttle Plate Orientation
  85. cruise linkage
  86. 95 STS hi-rpm and auto-acceleration problem
  87. Data on the northstar
  88. Buy a N* with a blown head gasket - Dumb idea?
  89. Weird Idle Issues
  90. 1994 Concourse stuttering
  91. Cooling Fans
  92. Coolant supplement clogged T stat
  93. ghost in the machine
  94. Turbo STS Dyno results
  95. PCM Source
  96. 99 Deville misfire and fuel sensor
  97. Learning about Torque Convertor and solenoid
  98. Casper Electronics TPS Enhancer
  99. What year Nstars fit '99 Deville?
  100. Help:Crankshaft Sensor Replacement
  101. Torque convertor can damage the solenoids?
  102. What will it take to get you to buy a 80mm throttle body?
  103. Is this a "freeze plug"?
  104. Is this a 95 intake?
  105. Weird Hydraulic whine, maybe tranny????
  106. # 8 misfire
  107. where are the plugs on my 03 dhs northstar engine?
  108. Water Leak
  109. 4T80E vs Dexron VI, GM new standard
  110. 200,000 mile mark reality? 1996 STS NStar
  111. It wasnt a hole in the block!!!!!
  112. Just Bought a Granma owned NS w/81K-WOT?
  113. please help!?!?!?!?!
  114. High volt MAP
  115. Rough Idle and Stuttering Acceleration
  116. 94 seville sls oil pan gasket replacement...
  117. 97 headgaskets what else should be done?
  118. Differences in the Northstar engines
  119. PCM info for NorthStar
  120. accessing rear spark plugs
  121. 99 STS Turbo charged video
  122. 1994 Eldorado P083 Code?
  123. Looking for help with Codes
  124. What's this noise....
  125. How do you I.D. an engine?
  126. Expansion tank leaking...
  127. Engine ID
  128. 1994 eldorado fuel pump
  129. unchanged SP wires longevity?
  130. Launch Control for N* ignition
  131. coolant loss
  132. Can I fix my 01 Northstar myself?
  133. Turbo WOT 7psi to REDLINE
  134. 0101 MAF-continues
  135. Turbo Update
  136. changing out o2 sensor on 97 deville
  137. P0404 - Exhaust Gas Recirculation (EGR) Open Position Performance?
  138. deciphering DTC messages into plain English
  139. Cylinder Head Info!
  140. Northstar noise
  141. Best Code Reader/Scanner?
  142. EGR change w/ SS fuel rail- trick maybe
  143. Where is the INPUT SPEED SENSOR?
  144. 97 deville fuel problem
  145. GM coolant additive???
  146. Car wont start
  147. Serpentine belt
  148. no overdrive in my 98 eldo
  149. Really Head Gasket?
  150. New plugs and wires, now misfire
  151. STS Tranny trouble
  152. Improper Sparg plug gap, what happens?
  153. 94 STS hesitates or stumbles
  154. Need a Timesert kit
  155. its been a little while but i am back for good!!
  156. Stalls after fill-up
  157. High Oil Consumption *INFO*
  158. I got porked...Blown N*.
  159. Glowing red exhaust manifolds
  160. Pop Off / Backfire Valve Replacement
  161. fuel filter location?
  162. Pictures of Turbo Project
  163. Head gasket compressed thickness
  164. Emission Codes
  165. Extremely Rough Idle... Cracked Intake Manifold?
  166. Spark Plug Gap
  167. Biggest Problems with the N*'s?
  168. 1999 STS - Timesert question
  169. Gurgling Sound/ Trapped Air in Coolant System
  170. Injector
  171. 95 Deville howl's near the belt
  172. 97 deville N* head gasket costs?????
  173. No overdive
  174. Emmissions Codes
  175. One gear, LIMP MODE? NO CODES
  176. 2000 Deville TCC PWM replacement
  177. p056
  178. 98 Northstar Fuel Rail Recall
  179. Removing bad FPR
  180. '95 Eldorado start-up getting more "difficult"
  181. 93 Northstar Headgasket - Can I do it myself?
  182. Reliability and longevity of a 97 N* motor?
  183. Gas-saving gadgets article
  184. Crank Position Sensor
  185. 1993 1994 Northstar Intake Manifold
  186. How do I spot a head gasket starting to go?
  187. 97 deville radiator drain
  188. N* with code p041
  189. Intake mod
  190. Cold Start Backfire from 97 N*?
  191. OBD2 computer interface
  192. Jasper Verses OEM
  193. 1996 Eldorado Codes
  194. Piston Slap ?
  195. P0420 Code
  196. Northstar oil pump
  197. N*4.6 vibration problem
  198. Cooling system question
  199. Need an engine teardown pic...
  200. Cam Cover Gasket / o-ring replacement
  201. changing altn
  202. Reflash PCM on 96
  203. Link From Consumer Affairs to Dexcool Lawsuit Atty.
  204. Timesert Kit Needed Asap!!!
  205. Failed Emissions Test- But No Codes
  206. fpr fpr
  207. 1999 Northstar with blown head gasket
  208. Water pump??
  209. plugs and wires
  210. Changed TPS on 95 STS d/t P020, now MIL & P080
  211. throttle body cleaning was the answer
  212. Now having trouble in a different way
  213. 200 Deville occasionally won't Idle when starting warm
  214. P1406 Code? EGR?
  215. idle relearn and isc adjust
  216. 1993 Fuel Psi regulator
  217. Cracked Engine Block in 2001 DeVille
  218. 93 -99 N* vs 2000 - 2004, which is better
  219. motor mount...and more
  220. 97 deville leakin trans fluid
  221. MAF replacement
  222. too hot and too cold
  223. Does anybody here have full access to TSB info at alldata?
  224. Overheat SOLVED ! Thank You Ranger & Others
  225. '95 Northstar 4.6 oil leak
  226. Northstar Blower Motor For Sale
  227. 96 Deville running hot
  228. 97 deville stalling, no codes
  229. Changing Spark Plugs- '99 STS
  230. 94 sls overheating,maybe...
  231. I see a lot of posts on supercharging a Northstar
  232. How to get more torque, 03-DTS
  233. Replace or fix
  234. Typical NOOB questions...
  235. Northstar intake manifold
  236. Northstar intake manifold
  237. hey zonie or ranger,
  238. Losing Coolant & Radiator Leakage
  239. ac delco plugs..<-1999 and 2000-> years, whats the difference?
  240. Delco VS Bosch Plug Wires
  241. Oil "Blow By"
  242. Coming 6 speed automatic
  243. WOT - is this the ONLY way to remove carbon buildup?
  244. New source for 80mm throttle bodies!
  245. Is It A Head Gasket???
  246. Jasper Engines
  247. Confused about spark plug type
  248. Surge Tank Design
  249. Stranded out of town!!!
  250. Speed limiter