: Northstar Engines and System Technical Discussion



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  1. Head Gasket on 99 STS
  2. Pcv
  3. 02 DTS, Crank Sensor and Gas Mileage question, HELP!
  4. New solenoid valve kit if anyone wants it
  5. Northstar barely running
  6. Curious about performance mods...
  7. please idlee problemss help!
  8. Self scanning OBD while driving
  9. WOT advice for new member
  10. N* 1994 compatible with 1995????
  11. Coolant level? '97 Deville
  12. p1860 and p0741 repair help
  13. White Exhaust
  14. I have a code that's not on my list of codes. (P069)
  15. IAT sensor
  16. it ran so good in the past
  17. Leak Back Pressure Incorrect
  18. Code P1406 - EGR Valve Pintle Position Circuit
  19. HELP Rear Exhaust Flange Bolt Removal
  20. 02 STS simple things to help performance
  21. Groaning sound.....waterpump?
  22. Installing TPS right now.....
  23. help changed engine
  24. Throttle Body Service...is it worth$$?
  25. Throttle Body Cleaning, worth the hassel?
  26. Coolant Drain Plugs On the N*
  27. codes codes and more codes
  28. service.gm.com password?
  29. years headgaskets go bad?
  30. coolant smell help!
  31. sudden stalling
  32. Dyno results before turbo charging
  33. 4.6 Northstar Parts
  34. Head Gasket Problem!!!
  35. Just had timeserts installed.
  36. oil leak
  37. Loosing Oil and Burning Smell
  38. need info on 1999 cadillac deville engine
  39. Carbon Deposit HELP FAST
  40. ABS Question/New Engine
  41. 3rd or 2nd gear for brake help
  42. O2 sensor
  43. No2 + N* ???
  44. Engine seems to be knocking
  45. No cruise driving me nuts!!!
  46. Throttle body bolt torque specs
  47. Bad Smoke Help Please
  48. Coolant Flushing Pros/Cons?
  49. Hot start...but not the FPR!
  50. failed emissions test
  51. Has anyone had a headgasket leak oil?
  52. Low Oil Pressure Stop Engine !
  53. Carbon Deposit cleaning TEC
  54. Performance Programer 97 ETC??
  55. Ram Air
  56. Surging when cold
  57. N* comp&performance mods
  58. Recall SS and FPR
  59. NS block warp?
  60. 97 Etc Cpu Mods Or Other N* Perfromance
  61. Head gasket leak after
  62. Corrupt Miles.
  63. Anyone dyno their Caddy?
  64. Rough Running 97 DeVille
  65. Northster Squeel/Whistle
  66. Sweet exhaust smell?
  67. supercharging a 4.6L Northstar
  68. engine died in acceleration! wont start.
  69. T/C cut out assembly
  70. N* feels shuddery
  71. Well, changed the oil....
  72. Starter failure???
  73. GM Remanufactured Transmission...has
  74. Heater core intake line
  75. Stays in open loop (?)
  76. P039 Torque Converter Clutch/Viscous Converter Clutch Engagement Problem
  77. Top End Setting?
  78. Code- P0442
  79. Tune-UP this weekend; questions..
  80. Is this possible ?
  81. P0151 02 Sensor Circuit Low Voltage (Bank 2 Sensor I
  82. This whole WOT thing....
  83. Fuel Pressure for a 95 STS?
  84. Should I Worry About WOT?
  85. Oil level sensor question?
  86. '97 NorthStar Coolant Temp
  87. 13mpg!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  88. P0139 - Heated Oxygen Sensor (HO2S) Slow Response Bank 1 Sensor 2
  89. throttle body cleaning
  90. Recommended fuel pressure + stalling
  91. 2000 ETC MPG Blew My Mind
  92. Installation/Removal of Temperature Sensor
  93. 93 sts
  94. Dropping Drive Train Axles Too?
  95. with the engine now out, what should I replace?
  96. Volant Intake For 2001-2004 4.6L Deville
  97. groan/rattling noise
  98. 1998 surging when accelerating
  99. Keeping a '97 NS running well
  100. 94 STS Help! Cooling Fans Inop
  101. prolonged cranking 1996 eldo
  102. stan_tampabay
  103. Long crank startups
  104. 2000 deville code hlep
  105. bad coolant temp sensor?
  106. www.steelseal.com
  107. 1994 Eldorado sometimes misfiring. Water in the Fuel?
  108. Ranger....Coolant Question
  109. Northstar Coolant Questions
  110. Replaced the MAP sensor
  111. Code problem, please help!!!
  112. Peformance of 2005 Cadillac Deville w/ Northstar
  113. HELP...car wont start
  114. Possible benefit from a grounding kit?
  115. Annoying Problem
  116. Northstar swap into a Buick Reatta
  117. Which side is the inj. harness on?
  118. 2000 n* into 1996
  119. Tensioner question
  120. 98 DeVille -Torque Trouble
  121. 93 Northstar Allante TPS Issues
  122. Oil light?
  123. 97 STS, low compression in all left bank cyls
  124. Help I027 SES Code came up After a W.O.T
  125. Starter revelation, ....for me anyhow!
  126. Fuel Pump and Erratic idle
  127. Is this a good price for a used N*?
  128. finding an alternative to timeserts
  129. need time sert kit for head gasket repair
  130. Oil filter?!?
  131. 96 DeVille losing coolant
  132. Prevention of Headgasket Trouble?
  133. How much could I get for it all? (N* project)
  134. Anybody have a 300hp northstar and a scan tool?
  135. Severe stumble
  136. last thing holding my cylinder head on... help!
  137. help with some codes
  138. W.o.t.
  139. flickering oil light
  140. Northstar repair
  141. exhaust question
  142. Coolant Problem Eatin My Money!!!!
  143. Tune UP
  144. W. O. T!
  145. Help!!! How do I remove the belt out of a 1999 Seville STS N* engine???
  146. Water Pump Confusion
  147. update - starting
  148. TPS values (PD01 PCM Data output)
  149. 94 SLS Smoked/Smelled and now Won't Start
  150. The Case Of The Dissapearing Oil?
  151. How To Pull Codes (DTC's)
  152. 98 DeVille starting trouble. Help!
  153. Double Flush?
  154. 2000 sls high idle
  155. 1998 Deville Tune-Up confusion
  156. 98 n* head bolts/inserts
  157. 97 Etc Engine Exchange...please Help
  158. 95 ETC Overheating Sometimes??
  159. 97 northstar still overheating
  160. People with stalling problems may want to look at this!!!
  161. NOOB needs some help!!... northstar blown!!!
  162. Loud snapping sound during startup/shutdown
  163. Question on maintanance
  164. Dex-Cool no longer made?
  165. Prestone Super Radiator Flush
  166. Popular choice for spark plugs in my 99 STS???
  167. removing the crank pulley
  168. Post Explosion Roughness
  169. Adjusting Tming (94 concours)
  170. 94 sls whats causing a high idle?!
  171. symtoms of bad wtr pump, 97 concours
  172. EGR valve location
  173. Bottom end/block from another engine?
  174. spark plug wires?
  175. Too Much Spent, Same Problem
  176. 1993 Exploding Intake Plenum
  177. STS Mufflers
  178. Why does dirty TB cause crazy idle?
  179. O2 Sensor
  180. Noisy engine
  181. 100000 mile maintenance
  182. Crank sensors
  183. Pictures of relocated PCM
  184. Reverse (ing) ...
  185. ??Smoking 96DeVille??
  186. head bolt torque settings
  187. Quick Oil Change Question....
  188. 01 STS stalls when stoped at light!
  189. getting the O2 sensor changed
  190. Fram Sure Drain
  191. Engine noise
  192. Piggyback computer is installed
  193. 98 Head Gasket Job
  194. 1993 Northstar
  195. 1998 Northstar For Sell
  196. 2002 DTS Spark Plugs
  197. Time serts pulling out of block
  198. 94 running hot!?????
  199. Tricky
  200. Old Fuel Rail Vs. New Fuel Rail
  201. Oil Leaks
  202. Found used NS, need advice.....
  203. Anyone else's N* tick at idle?
  204. Fuel Pressure Regulator and hot start problems
  205. HiPo Northstars in the house?
  206. Deville 96 Coolant leaking ...
  207. 1993 STS Rough Idle
  208. Oil pan bolt torque
  209. 96 Deville Northstar, No Oil Pressure out of the blue.
  210. So K&N air filter is no good?
  211. 93 Eldorado
  212. 98 deville hard starting
  213. check transmission message
  214. 99 deville/Northstar
  215. Opinions Needed
  216. Coolant supplement tabs not added at coolant change. Now what???
  217. 55.6 mpg
  218. 89in-lb? Seriously?
  219. transmission oil loss
  220. lean fuel mixture
  221. Has anybody bothered to check their Calculated Octane Rating on their OBDI Northstar?
  222. 98 STS airbox mod?
  223. cable acting up, white smoke 94 sls
  224. Trans Fluid Change Question
  225. Can anyone tell me if I have a bad head gasket
  226. Regular vs Premium Gas
  227. Po39
  228. My cheap-ass tune up
  229. head gasket and engine in-vehicle possible?
  230. 95 seville starter help!! plz look
  231. Possible Idling Problem?
  232. lifting out the '94 northstar.. please take a look
  233. My Nitrous project is under way...
  234. trans. leak
  235. c
  236. Coolant leak 98 DeVille and desparate
  237. Coolant leak and desparate
  238. Spark Plugs
  239. How about Eldo Performance Mods?
  240. new radiator, now engine overheats
  241. new radiator, now engine overheats
  242. Parts lookup by GM part #?? is it possible?
  243. Flushing 4T80E....how many quarts of fluid?
  244. changing PCValve on 94 eldorado
  245. Error code P035
  246. pull engine from the top in sections ?
  247. Sharp right turn=Puff of blue smoke!
  248. inside radiator leak/transmission leak?
  249. 93 Eldorado 4.6 Northstar "chuggle"
  250. high trans line pressure