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View Full Version : Northstar Engines and System Technical Discussion



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  1. How do I clear codes?
  2. Engine misfire/stall codes
  3. Engine Coolant Temperature 190-201 F
  4. Oil Under Intake 94 Northstar
  5. Finding coolant leak...need help
  6. Motor Oil Choice
  7. High Oil Consumption, Pulled Headbolts, Blown Head Gaskets, Bars Leak, Unstable Temps
  8. Service engine soon light-94 concours
  9. changing out serpentine tensioner
  10. Fastest NORTHSTAR
  11. Which pistons can and should I use
  12. Transmission codes
  13. s/s fuel rail removal to get to EGR...
  14. 1996 SLS Transmission Reluctant/Studders to go to Overdrive Ideas?
  15. My car Quacks
  16. 94 concours, test your knowledge
  17. Technical Service Bulletins
  18. AAA Extended Warranty
  19. Code AC1348 on 1996 seville SlS what does it mean?
  20. Possible for Trans. Solenoids not to show a code?
  21. Oil Pump - how to inspect and test out of engine
  22. Where does a coolant change go into?
  23. 94 concours rough idle when hot
  24. Northstar Head Gasket.. What Parts Needed???
  25. Where exactly are the B1S2, B2S1, and B1S3 O2 sensors located?
  26. Dead #1 - Stumped & DisCUSSeded!
  27. air bag
  28. 97 deville cooling system
  29. My First problem with my 2001 DTS if anyone can help?
  30. 96 Eldorado trouble code PC 0420...
  31. Head gasket and mileage...
  32. VIN Code "9"
  33. Using oil....but where?
  34. Can the Northstar be rebuilt?
  35. OK, who else needs a timesert kit????
  36. supercharger??
  37. error code
  38. Help with removing Northstar coolant crossover
  39. service vehicle soon !!!!!!
  40. p094 code - where is the soleniod located?
  41. Replaced A And B Shift Still Actin Funny
  42. HELP: BPTB, AC compressor
  43. CD-ROM Service Manuals
  44. Water Pump Replacement
  45. How many have blown Northstars
  46. using non-GM spark plug wires?
  47. I'm being ROBBED! (of hp)
  48. What's up with the new "Universal" coolant? (Bbob?)
  49. thanks to bbob, ranger, etc.
  50. Does A Northstar Have Mds?
  51. N* coolant problem
  52. LD8 L37 comparison...which is really quicker?
  53. 1996 SLS Won't Disengage Parking brake when put into gear?
  54. RTD means??
  55. NorthStar Reputation..
  56. rss c1769 code.. help !
  57. Help with PC0174 code
  58. smell coolant? check freezeplugs
  59. Air intake "twister"?
  60. BBob need help
  61. n* check coolant level on 97 deville
  62. compression check out of car
  63. ***********
  64. Possible Main Bearing Knock....what to do?
  65. benlomand
  66. Code P0335 on 2001 STS
  67. Need Options...coolant blowing out...
  68. Bbob - a leason on sealers, please!
  69. lift
  70. EGR valve removal.. need a bit of help
  71. 1996 DeVille won't start
  72. 1996 sts - "NO IRC DATA"
  73. Some unanswered throttle body cleaning questions
  74. Performance chips...scam?
  75. 96 concours code help!!
  76. Northstar Intermittent misfire-Pulling hair out!!
  77. Oil Burning Eldo, 1997 Etc..
  78. Where is my gas filter? 97 STS
  79. Remote mirror removal & repair questions
  80. TCS C1233 and ignition problem? 97 SLS
  81. Regular fuel change ecm program
  82. Performance questions!!!!
  83. Burning Coolant
  84. Exhaust manifolds: removed with engine in place?
  85. How warm do I warm my car up?
  86. P0741 & P1860
  87. Run mid-grade every other tank?
  88. 2000 N* into a '96 DeVille?
  89. Timesert or not?
  90. 00 DTS - Starting issue
  91. Tranny trouble again.
  92. Main thread pulled out
  93. My Idea!!!!!!
  94. RWD Northstar? Gofast Parts?
  95. Water Pump ?
  96. Crank Position Sensor Symptoms and Replacement
  97. Northstar Help
  98. Idle surging
  99. starting problem
  100. Probly Not a New Question - Oil Pan Leak
  101. Quick Question
  102. motor swap 94 to 97 Relocation of air sensor
  103. the Northstar and cams???
  104. Best High-flow cat
  105. Water Pump Housing
  106. Torque Sequence and Lbs for NStar Heads BBob??
  107. Vapor lock
  108. references for understanding the N*?
  109. Boggy Accel
  110. P036 Since changing crossover
  111. Crossover changed, now smoking anit-freeze?
  112. ZDP Right ? Bad ?
  113. a few questions i have.
  114. Main Acc Drivebelt - Whine & Grind Noises
  115. Magnaflow Hi Flow Cats
  116. Cracked oil pan...
  117. not licking to stop and slight oil leak
  118. loud noise in valve cover ?
  119. Oil level sensor (check oil level)
  120. Oil Residue/grease on section of Air filter on 96 N* Why?
  121. Buying the Juice....
  122. Average Cost to replace Tranny on N*?
  123. Few STS questions..engine, suspension??
  124. N*--Built by ISUZU????
  125. 93 STS starting problem
  126. aftermarket catalytic converter
  127. Code P1350
  128. My oil drain plug magnet is missing
  129. Question about the EGR valve
  130. Oil Question
  131. AC Compressor changeout - success -
  132. egr valve test?
  133. Long Crankin
  134. AC 41-900 Replaced with the 41-950 plug
  135. New to North stars
  136. oil smoke -- any suggestions?
  137. HeadGasket
  138. Oversize pistons? Undersize bearings?
  139. Cleaning fuel injectors
  140. 2003 SLS ECM code: DTC "P0300
  141. Dex Cool is eating the gaskets?!!!
  142. Transmission Problem Not Sure Need Help Bad!!!!!!!
  143. belt
  144. direct flow air filter intake
  145. '98 cam to waterpump belt
  146. egr bench test / disassembly ?
  147. Things I should do when changing engines
  148. 5% discount on parts!
  149. 3 qts oil in 3000 miles?
  150. 95 deville blown head gasket
  151. Northstar oilpan
  152. Cylinder rings blown on 18 thousand miles??? (cylinder nr 8 totally w/o compression)
  153. Alternative to Platinum Plugs?
  154. Low Coolant Level
  155. Cylinder rings blown on 18 thousand miles??? (cylinder nr 8 totally w/o compression)
  156. just bought 97 eldo std.
  157. Failed emissions test
  158. Compression test results 98 Seville
  159. Dex Cool.....What going on?
  160. 98 eldo jerking while stopped
  161. Remanufactured Northstar Engine
  162. Question about climate control.
  163. Anybody got a stock calpack?
  164. Bizarre Coolant- A/C problem 98 Deville!!!
  165. Oil in spark plug chamber, How Bad Is This?
  166. water pump/thermostat crossover housing leaking again
  167. caprice vs Seville sts
  168. GXP-ify my sts?
  169. SeaFoam Opinions...
  170. WOT advice
  171. intake kit
  172. '98 deville idle
  173. Northstar Timing Chain Re-Install & Head Gasket Re-install Feedback........
  174. Belt Tensioner Condition - Bboby?
  175. My water pump belt is dancing around...
  176. Bbob?? Could you look at this Link?
  177. Supercharged Northstar
  178. Help with emissions system
  179. Corsa scrwwed me over!
  180. Latest head bolt tightening spec?
  181. ZEX ordered....
  182. 98 Eldo N* 4.6 Overheating
  183. Intermediate timeing chain shaft - O ring?
  184. Any performance parts for the N*?
  185. Oil pump - what is the grove and the port for
  186. It Happened,the dreaded overheat!
  187. Tightening time saver and accuracy improved with simple trick
  188. Oil cooler line leak, 4.6 N*
  189. SES Misfiring DTC P0300 My hunch is.....
  190. coolant coming out of overflow hose like faucet '97 Eldo
  191. Engine seems to misfire a bit when it's cold or damp out
  192. How do you properly use pellets? Northstar
  193. '98 Deville Rough Idle, Shaking, Stuttering Under Acceleration
  194. Are AC/Delco parts available only at the dealer?
  195. Can you use 10W-40 in a Northstar
  196. Thread inserts?
  197. Torque strut removal and "engine tilt"
  198. missing bolts on side of oilpan and A-frame...
  199. 97eldo Need Help
  200. Tune Up Time!
  201. engine died
  202. 95 Deville Oil Presure
  203. Tool to remove the water pump pulley
  204. Remove the water pump pulley
  205. 96 SLS burning oil like it's gas
  206. OK, tired of Headgasket worry...
  207. chugging N*
  208. Engine Swap Info
  209. Hotrod with the N*
  210. Engine Codes PC0300 & RF2560
  211. 96 Sedan Deville-Where is the thermostat located
  212. Coolant Change 98 Deville
  213. witch fuse?
  214. Before And After....(Mufflers)
  215. 99 N doesnt come with factory strut tower bar?
  216. Limp Home what is it??
  217. OBDII Programmers
  218. "flapper door" replacement?
  219. Performance mod
  220. Buzzing and ringing...
  221. Major problems at 80K miles. Is this normal?
  222. Blue Devil Engine & Cooling system Sealer!?
  223. Electronic Speedometer Display
  224. Strange rhythmic vibration 2000 DTS
  225. blown head gasket
  226. Code I039??
  227. Can DIC messages be cleared for good??
  228. Head gasket replacement
  229. Is your N* running bad, hesitating, missing??
  230. advice on correct coolant temps for 92 eldorado
  231. Summit Turbo Mufflers?
  232. Help with 98 STS part.
  233. 98 STS Motor mount busted
  234. 94 Concours prob. after EGR cleaning P036
  235. ignition switch
  236. Heat / AC cover ?
  237. overheats sometimes
  238. How did this happen?
  239. 99 STS Starting hard then STALLING..Help!!
  240. Exhaust Vids
  241. WOT vs 4T80E vs. Timing Chain
  242. Plumbing help on 99 STS
  243. Engine died & no codes?
  244. How many miles can I drive my 1996? Problems will be?
  245. 1st Self Work on 1994 STS
  246. Northstar TIME-SERT Kit for Sale.....
  247. My Caddy won't start.....help!!
  248. Racing Junk heads
  249. 93 eldorado northstar stalls out plz help!
  250. Occasional tranny slippage: Shift solenoid???