: Northstar Engines and System Technical Discussion



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  1. Lower Crankcase Reseal
  2. PC0300 with troubleshoot. Coil Resistance?
  3. '94 Eldorado Coolant change. Help!
  4. Squeaking belt noise - Help!
  5. oil change timing
  6. changed FPR now P0507 code?
  7. need help with water pump.
  8. Fix it or not? Head Gasket.
  9. Future 1996 STS buyer
  10. update on Polyisobutylene
  11. So, I took it to Cottman........
  12. 03 DTS Major Tune Up
  13. Codes, Codes, and more codes....
  14. First WOT on Grandma Owned N*
  15. Tech Manual
  16. What are the performance number of the SLS,DHS
  17. 98 Seville engine mount
  18. N* all OBDII?
  19. EGR Valve Cleaning and Location
  20. How To Replace O2 Sensor Bank 1 Sensor 1
  21. 93 Eldo transaxle
  22. Intake Bolts
  23. Fuel rail/line recall
  24. Saw an interesting Swap today.... (56k take a nap)
  25. Need some help from someone with a 96-99 manual
  26. Not enough WOTs?
  27. another problem solved! N* stutter gone
  28. Coolant Eats Gasket?
  29. Starter Idiocy?
  30. Have you tried Polyisobutylene ??
  31. How to Remove EGR Valve
  32. Granatelli Trans Tuner - Anyone try this?
  33. Granatelli Trans Tuner - Anyone try this?
  34. Performance Survey - New Owner - Seeking Ideas
  35. 94 STS - Throttle Plate Orientation
  36. cruise linkage
  37. 95 STS hi-rpm and auto-acceleration problem
  38. Data on the northstar
  39. Buy a N* with a blown head gasket - Dumb idea?
  40. Weird Idle Issues
  41. 1994 Concourse stuttering
  42. Cooling Fans
  43. Coolant supplement clogged T stat
  44. ghost in the machine
  45. Turbo STS Dyno results
  46. PCM Source
  47. 99 Deville misfire and fuel sensor
  48. Learning about Torque Convertor and solenoid
  49. Casper Electronics TPS Enhancer
  50. What year Nstars fit '99 Deville?
  51. Help:Crankshaft Sensor Replacement
  52. Torque convertor can damage the solenoids?
  53. What will it take to get you to buy a 80mm throttle body?
  54. Is this a "freeze plug"?
  55. Is this a 95 intake?
  56. Weird Hydraulic whine, maybe tranny????
  57. # 8 misfire
  58. where are the plugs on my 03 dhs northstar engine?
  59. Water Leak
  60. 4T80E vs Dexron VI, GM new standard
  61. 200,000 mile mark reality? 1996 STS NStar
  62. It wasnt a hole in the block!!!!!
  63. Just Bought a Granma owned NS w/81K-WOT?
  64. please help!?!?!?!?!
  65. High volt MAP
  66. Rough Idle and Stuttering Acceleration
  67. 94 seville sls oil pan gasket replacement...
  68. 97 headgaskets what else should be done?
  69. Differences in the Northstar engines
  70. PCM info for NorthStar
  71. accessing rear spark plugs
  72. 99 STS Turbo charged video
  73. 1994 Eldorado P083 Code?
  74. Looking for help with Codes
  75. What's this noise....
  76. How do you I.D. an engine?
  77. Expansion tank leaking...
  78. Engine ID
  79. 1994 eldorado fuel pump
  80. unchanged SP wires longevity?
  81. Launch Control for N* ignition
  82. coolant loss
  83. Can I fix my 01 Northstar myself?
  84. Turbo WOT 7psi to REDLINE
  85. 0101 MAF-continues
  86. Turbo Update
  87. changing out o2 sensor on 97 deville
  88. P0404 - Exhaust Gas Recirculation (EGR) Open Position Performance?
  89. deciphering DTC messages into plain English
  90. Cylinder Head Info!
  91. Northstar noise
  92. Best Code Reader/Scanner?
  93. EGR change w/ SS fuel rail- trick maybe
  94. Where is the INPUT SPEED SENSOR?
  95. 97 deville fuel problem
  96. GM coolant additive???
  97. Car wont start
  98. Serpentine belt
  99. no overdrive in my 98 eldo
  100. Really Head Gasket?
  101. New plugs and wires, now misfire
  102. STS Tranny trouble
  103. Improper Sparg plug gap, what happens?
  104. 94 STS hesitates or stumbles
  105. Need a Timesert kit
  106. its been a little while but i am back for good!!
  107. Stalls after fill-up
  108. High Oil Consumption *INFO*
  109. I got porked...Blown N*.
  110. Glowing red exhaust manifolds
  111. Pop Off / Backfire Valve Replacement
  112. fuel filter location?
  113. Pictures of Turbo Project
  114. Head gasket compressed thickness
  115. Emission Codes
  116. Extremely Rough Idle... Cracked Intake Manifold?
  117. Spark Plug Gap
  118. Biggest Problems with the N*'s?
  119. 1999 STS - Timesert question
  120. Gurgling Sound/ Trapped Air in Coolant System
  121. Injector
  122. 95 Deville howl's near the belt
  123. 97 deville N* head gasket costs?????
  124. No overdive
  125. Emmissions Codes
  126. One gear, LIMP MODE? NO CODES
  127. 2000 Deville TCC PWM replacement
  128. p056
  129. 98 Northstar Fuel Rail Recall
  130. Removing bad FPR
  131. '95 Eldorado start-up getting more "difficult"
  132. 93 Northstar Headgasket - Can I do it myself?
  133. Reliability and longevity of a 97 N* motor?
  134. Gas-saving gadgets article
  135. Crank Position Sensor
  136. 1993 1994 Northstar Intake Manifold
  137. How do I spot a head gasket starting to go?
  138. 97 deville radiator drain
  139. N* with code p041
  140. Intake mod
  141. Cold Start Backfire from 97 N*?
  142. OBD2 computer interface
  143. Jasper Verses OEM
  144. 1996 Eldorado Codes
  145. Piston Slap ?
  146. P0420 Code
  147. Northstar oil pump
  148. N*4.6 vibration problem
  149. Cooling system question
  150. Need an engine teardown pic...
  151. Cam Cover Gasket / o-ring replacement
  152. changing altn
  153. Reflash PCM on 96
  154. Link From Consumer Affairs to Dexcool Lawsuit Atty.
  155. Timesert Kit Needed Asap!!!
  156. Failed Emissions Test- But No Codes
  157. fpr fpr
  158. 1999 Northstar with blown head gasket
  159. Water pump??
  160. plugs and wires
  161. Changed TPS on 95 STS d/t P020, now MIL & P080
  162. throttle body cleaning was the answer
  163. Now having trouble in a different way
  164. 200 Deville occasionally won't Idle when starting warm
  165. P1406 Code? EGR?
  166. idle relearn and isc adjust
  167. 1993 Fuel Psi regulator
  168. Cracked Engine Block in 2001 DeVille
  169. 93 -99 N* vs 2000 - 2004, which is better
  170. motor mount...and more
  171. 97 deville leakin trans fluid
  172. MAF replacement
  173. too hot and too cold
  174. Does anybody here have full access to TSB info at alldata?
  175. Overheat SOLVED ! Thank You Ranger & Others
  176. '95 Northstar 4.6 oil leak
  177. Northstar Blower Motor For Sale
  178. 96 Deville running hot
  179. 97 deville stalling, no codes
  180. Changing Spark Plugs- '99 STS
  181. 94 sls overheating,maybe...
  182. I see a lot of posts on supercharging a Northstar
  183. How to get more torque, 03-DTS
  184. Replace or fix
  185. Typical NOOB questions...
  186. Northstar intake manifold
  187. Northstar intake manifold
  188. hey zonie or ranger,
  189. Losing Coolant & Radiator Leakage
  190. ac delco plugs..<-1999 and 2000-> years, whats the difference?
  191. Delco VS Bosch Plug Wires
  192. Oil "Blow By"
  193. Coming 6 speed automatic
  194. WOT - is this the ONLY way to remove carbon buildup?
  195. New source for 80mm throttle bodies!
  196. Is It A Head Gasket???
  197. Jasper Engines
  198. Confused about spark plug type
  199. Surge Tank Design
  200. Stranded out of town!!!
  201. Speed limiter
  202. cams in a northstar
  203. acceleration troubles...
  204. Coolant crossover photos
  205. P0300 Vote!
  206. the best oil for the northstar engine
  207. No Start Please I Need Help!!
  208. 3 questions regarding the timesert job
  209. fuel air mixture
  210. Replacing O2s
  211. P056
  212. Northstar V. 4.9
  213. 97 northstar engine miss
  214. Engine oil leak
  215. IN Trouble Now losing coolant
  216. ice possible message...?
  217. 96 deville oil leak
  218. Replacing a Northstar with a LS1
  219. i cant stand this stalling, why does this happen?
  220. 94STS Blown Gasket Pics
  221. 96 deville
  222. all my problems help!!!!
  223. adding a fuel treatment
  224. Is it normal for...
  225. Surging at low revs and hard shift into 2nd
  226. couple of problems, only one code- AMP B1024
  227. You want DYNO graphs?
  228. 98' Deville Waterpump
  229. The best northstar engine?
  230. How can I avoid head gasket damage?
  231. 93 Northstar Stalls with no codes
  232. '92 Seville radio question
  233. "Clunk" noise at startup? Trans Problem? Help!!
  234. fuel treatment
  235. Code P0101
  236. P023 code on 95 Eldorado
  237. 93 Eldo intermittent no spark,no start
  238. Motor change
  239. Injector malfunction Help!!!!
  240. Mod questions for a 2000 DeVille
  241. Sounds like a bird chirping
  242. 97 deville hesiatation!!!!!
  243. '96 STS OverHeating
  244. Head Gasket on 99 STS
  245. Pcv
  246. 02 DTS, Crank Sensor and Gas Mileage question, HELP!
  247. New solenoid valve kit if anyone wants it
  248. Northstar barely running
  249. Curious about performance mods...
  250. please idlee problemss help!