: Northstar Engines and System Technical Discussion



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  1. mystery oil leak
  2. Still Can't Get The Front Valve Cover Off!!!
  3. Ignition System Problems
  4. This sounds dumb but I'm gonna ask anyway - air intake question
  5. A/C recharge
  6. API grades
  7. Engine Difference between 97' & 99' STS?
  8. part# for speedy sleeve
  9. Post Head gasket job (need Veteran rebuilders advise)
  10. 94 concours acting up..
  11. Trans Question 01 DTS
  12. Engine Error Codes...Please Help
  13. 4.6 L NorthStar Engine Design Questions
  14. multi miss fire multi codes 1996 dev
  15. Have a big ?
  16. What does it all mean?
  17. Metal flakes in engine oil
  18. latest lower end seal job procedure
  19. OBDII Tuner software for Northstar.
  20. Poor gas mileage in aurora 4.0
  21. Northstar Head Gasket, which side, which jug is more common
  22. Code P1415 help?
  23. need new O2s
  24. 2002 Deville transmission
  25. Wanted:1999 4.6 NorthStar leak-down values
  26. MAP Sensor relocation
  27. Can someone explain HOW my injectors went bad?
  28. Bad Mileage Not Fpr
  29. 1999 Cadillac STS Exhaust Mufflers
  30. 4t80e production changes 95-9
  31. Manifolds are melting my car
  32. Check Atf
  33. Putting Northstar on an Engine Stand
  34. Headgasket job +++?
  35. northstar swap into another car, a few questions
  36. 2002 Seville STS Cataylst Issues
  37. Engine Temperatures
  38. Can a 1999 4.6L Northstar "Y" be replaced/exchanged with a "9" of the same year
  39. Amsoil nano-filters (air & oil)
  40. DELCO PLATINUM #41-950 SPARK PLUGS from eBay
  41. 93 Water Pump Confusion
  42. How to check for bad ignition coil?
  43. 94 Eldorado surge in engine and 4 codes
  44. Questions On Crank Shafts
  45. weird start problem that occured
  46. northstar head switching
  47. Northstar 4.6 Interchange and Swapping
  48. Car Farts After WOT
  49. 1999 Northstar engine 85K Miles, How can one tell if is good
  50. 03 Seville Steering Adjustments? ? ?
  51. On My 3 Rear Main Seal
  52. 96 sts crankshaft position sensors
  53. any tranny experts out there?
  54. Fpr For $141.08
  55. Water pump
  56. Rwd N*
  57. Coolant Drain
  58. Coolant Leak 98 Deville
  59. so any chance of an AFC
  60. AC Compressor bypass
  61. 3.5L Shortstar Ignition
  62. Sound
  63. Northstar reliability...
  64. Name That Part
  65. Post headgasket job, one loose end left.
  66. Need re-assembly advise!
  67. Minor starting problem
  68. does it work? (hyper lube)
  69. 96 cadillac deville code after code?!?
  70. Transmission Durability?
  71. Shaky Tachometer at High RPM
  72. 1996 Seville STS Crank Sensors
  73. What other cars use the same style injectors?
  74. Adding Freon
  75. Lost power steering fluid rapidly. Is there a hose?
  76. Northstar engine rebuilders or performance builders in SoCal?
  77. 95 Northstar Coolant leak
  78. EXP ID Codes
  79. Looking for N*mech in northern RI
  80. 93 Eldorado T.C ignition issues
  81. voltage drops when car in drive
  82. after a&b solenoid
  83. Experts please help
  84. 1994 Cadillac Sevile STS thumping into fourth/overdrive
  85. know it all mechanic
  86. Well fellas, I think its really time....
  87. Northstar Head Gasket Issue
  88. timesert kit - for sale on ebay
  89. Strange rattling
  90. Northstar performance parts
  91. Procedure for Coolant flush
  92. Dynomax - Long life?
  93. Running Functional Test on my 94 Deville Concours.
  94. 94 northstar swap
  95. Airbox Computer?
  96. ICM Replacement
  97. Cranks, but won't start
  98. 96 deville antifreeze coming out exhaust
  99. Its Getting Hot Inside
  100. STS fuel Injection problem NEED HELP
  101. I think I'm missing a few ponies!
  102. 99 Deville Hesitating???
  103. Eliminating the exhaust crossover??
  104. Po138???
  105. Front Valve Cover Removal
  106. You guys read this stuff????
  107. camshaft swap "9" motor to "Y" motor
  108. What is TSB 99-06-04-053?
  109. 94 cadillac concours
  110. Can anyone tell me what these compression numbers mean?
  111. H Gasket Job Ballpark Price Needed for Parts
  112. Heater core replacement, help!
  113. Ah, darn... My 94 Eldorado Is having problems.
  114. Anyone know a reputable transmission shop in Orlando?
  115. Lifter?valve noise
  116. 93 Northstar dies out at idle
  117. Time Sert Kit Needed
  118. Engine Replacement
  119. Broken Head Bolt (small type)
  120. P0741 - TCC System Stuck Off...Now What??
  121. homemade locating dowels - a possibility?
  122. Rear Valve Cover Leak!!
  123. Going from a 4.0 to a 4.6
  124. how many miles on your N*?
  125. Crank Position Sensor Replace Quick Question...
  126. 98 STS code P0404 (and P0300)
  127. Not Nearly As Hard As I Thought
  128. what to do about SO codes...
  129. overfilled tranny....
  130. OBD1 chip reprogramming?
  131. Hey Check Out What Im Doing....
  132. 95-6 transmission harness
  133. new headbolts
  134. Torque Converter Clutch Stuck...How to Fix??
  135. BS? "aftermarket Mass Air Sensor = improved hp, torque and mileage from your car"
  136. pulling engine, top or bottom???
  137. RANGER: Can't Identify Codes...
  138. 1996 1/8th mile times!
  139. '96 SDV Update...2 Codes...Help??
  140. Need a new alternator......
  141. Cranking but not starting.. fuel pump relay?
  142. EXP ID 83, 84, 140, 25 ??? Any Help?
  143. timesert kit for sale
  144. Factory Specs for Compression??
  145. torque wrench advice
  146. Stripped Oil Pan Bolt Hole
  147. Would you like some cheese and crackers with that Whine?
  148. Ready to rebuild-best source for tserts and bearings
  149. Stability Reduced? wut?
  150. Compression numbers for the North*
  151. Options to repair ONE engine block thread
  152. What ever happened to the supercarger for N*?
  153. Torquing of Rocker????
  154. Minor Problem with my 94 SLS
  155. Chip & Bored T/B ???
  156. Why with the Northstar 4.6?
  157. PCM reflash for 95
  158. Sooooo....
  159. cam torque
  160. Blwoin a little smoke..
  161. casting number ID
  162. DANG - Trouble Codes Question
  163. Need some help..abs troubles?
  164. I saw a smoking Deville
  165. PCM Question II
  166. Air intake and airflow
  167. Trans making noise in park and neutral
  168. water pump replacement
  169. Pcm?
  170. STS Engine Cut-Out
  171. 94 SLS 4.6 showing oil pressure
  172. Performance transmission
  173. Aftermarket air intake...
  174. TCS C1287/C1286 help please
  175. Pics..pics...pics.....pics........
  176. Computer Swap Ok?
  177. MIL's - Anyone tried them yet?
  178. Anyone ever done or heard about doing this?
  179. Stumped (P0307)
  180. pressure control circuit code 076
  181. 94 Eldorado 4.6 starting problem
  182. Anyone have sound clips of their exhaust?
  183. 98deville whole computer lit up
  184. TPS autolearn for 1995
  185. '96 DeVille...New Owner...Am I NUTS??
  186. Turbo Track Times
  187. Anyone with rough starts, loss of power..read this.
  188. G-tech pro times.
  189. That's what I call stopping a leak!
  190. Need Valve Body Torque Secs ASAP Please
  191. 98 deville x grandpa mobile
  192. Northstar Experts Please Stand Up.....
  193. Robert Benham
  194. Bleeding air out of cooling system
  195. I think I blew it up
  196. northstar rough accleration/idle
  197. ALBUNDY - can't PM you
  198. Gm top engine cleaner
  199. transmission interchange
  200. 96 deville N* cats question
  201. 94 SLS I seem to be on a losing streak!
  202. Premium vs. Regular
  203. coolant fans
  204. Overheat Part 3
  205. coolant loss
  206. 94 Eldorado Power Steering Fluid?
  207. Big Serts installation
  208. lifter noise?
  209. Some advice
  210. Overheat, Part 2
  211. 2000 STS MAP sensor voltage high?
  212. FRP Help!! ASAP!!
  213. Overheat!
  214. 1999 Eldorado won't start and left me stranded
  215. Anyone use "regular" plug wires in N*?
  216. Higher Stall Converter...
  217. i think i found a fuel control system.
  218. 94 SLS radiator hydraulic line
  219. K&N Intake...I want one!
  220. ABS wiring diagram
  221. What are the available Northstar aftermarket performance parts?
  222. Northstar Oil Leak
  223. Northstar in the 1997-1999 Deville.. questions.
  224. N* with nitrous.
  225. 5000 mile or wait for oil life trigger?
  226. Hi Flow Cat converter to go with Corsa Exhaust, which one?
  227. MSD coils? I hit 104
  228. eldorado1- throttle body for 94 eldo available?
  229. need IAC, TPS, MAP sensors?
  230. 4.6 caddy vs. olds 4.0
  231. Has anyone here added performance parts to a 94 eldorado
  232. Bad coil packs or what?
  233. northstar battery
  234. 94 eldorado bad starter possibly?
  235. Starter change 94 SLS
  236. What's happening to the messages display?
  237. Day after alternator replace, now I need a new belt...coincidence?
  238. block off EGR
  239. Transmisson monitor??
  240. Water pump leak??
  241. Will machined heads mess up the ECU due to increased compression ?
  242. The Turbonator
  243. 96 STS engine swap
  244. Ok explain this.............
  245. Oil on sparkplugs??
  246. need help 96 deville
  247. North Star Temperature
  248. History Codes ??? & P0420
  249. VSS....how hard is it to change?
  250. Engine is not cranking - starter is fine