: Northstar Engines and System Technical Discussion



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  1. 94 SLS 4.6l, code P071
  2. 130mph??
  3. oil filter adapter
  4. 94 to 97 Northstar interchange question
  5. Bad batch of DELCO PLATINUM 41-950 SPARK PLUGS
  6. How long should plugs/wires last?
  7. Easy question - which is right and which is left?
  8. Tell me how to do a WOT.
  9. How did this guy do burnouts?
  10. 95 Eldorado occasional starting problem.
  11. Coolant change Air purging?
  12. two torque sequences?
  13. mystery oil leak
  14. Still Can't Get The Front Valve Cover Off!!!
  15. Ignition System Problems
  16. This sounds dumb but I'm gonna ask anyway - air intake question
  17. A/C recharge
  18. API grades
  19. Engine Difference between 97' & 99' STS?
  20. part# for speedy sleeve
  21. Post Head gasket job (need Veteran rebuilders advise)
  22. 94 concours acting up..
  23. Trans Question 01 DTS
  24. Engine Error Codes...Please Help
  25. 4.6 L NorthStar Engine Design Questions
  26. multi miss fire multi codes 1996 dev
  27. Have a big ?
  28. What does it all mean?
  29. Metal flakes in engine oil
  30. latest lower end seal job procedure
  31. OBDII Tuner software for Northstar.
  32. Poor gas mileage in aurora 4.0
  33. Northstar Head Gasket, which side, which jug is more common
  34. Code P1415 help?
  35. need new O2s
  36. 2002 Deville transmission
  37. Wanted:1999 4.6 NorthStar leak-down values
  38. MAP Sensor relocation
  39. Can someone explain HOW my injectors went bad?
  40. Bad Mileage Not Fpr
  41. 1999 Cadillac STS Exhaust Mufflers
  42. 4t80e production changes 95-9
  43. Manifolds are melting my car
  44. Check Atf
  45. Putting Northstar on an Engine Stand
  46. Headgasket job +++?
  47. northstar swap into another car, a few questions
  48. 2002 Seville STS Cataylst Issues
  49. Engine Temperatures
  50. Can a 1999 4.6L Northstar "Y" be replaced/exchanged with a "9" of the same year
  51. Amsoil nano-filters (air & oil)
  52. DELCO PLATINUM #41-950 SPARK PLUGS from eBay
  53. 93 Water Pump Confusion
  54. How to check for bad ignition coil?
  55. 94 Eldorado surge in engine and 4 codes
  56. Questions On Crank Shafts
  57. weird start problem that occured
  58. northstar head switching
  59. Northstar 4.6 Interchange and Swapping
  60. Car Farts After WOT
  61. 1999 Northstar engine 85K Miles, How can one tell if is good
  62. 03 Seville Steering Adjustments? ? ?
  63. On My 3 Rear Main Seal
  64. 96 sts crankshaft position sensors
  65. any tranny experts out there?
  66. Fpr For $141.08
  67. Water pump
  68. Rwd N*
  69. Coolant Drain
  70. Coolant Leak 98 Deville
  71. so any chance of an AFC
  72. AC Compressor bypass
  73. 3.5L Shortstar Ignition
  74. Sound
  75. Northstar reliability...
  76. Name That Part
  77. Post headgasket job, one loose end left.
  78. Need re-assembly advise!
  79. Minor starting problem
  80. does it work? (hyper lube)
  81. 96 cadillac deville code after code?!?
  82. Transmission Durability?
  83. Shaky Tachometer at High RPM
  84. 1996 Seville STS Crank Sensors
  85. What other cars use the same style injectors?
  86. Adding Freon
  87. Lost power steering fluid rapidly. Is there a hose?
  88. Northstar engine rebuilders or performance builders in SoCal?
  89. 95 Northstar Coolant leak
  90. EXP ID Codes
  91. Looking for N*mech in northern RI
  92. 93 Eldorado T.C ignition issues
  93. voltage drops when car in drive
  94. after a&b solenoid
  95. Experts please help
  96. 1994 Cadillac Sevile STS thumping into fourth/overdrive
  97. know it all mechanic
  98. Well fellas, I think its really time....
  99. Northstar Head Gasket Issue
  100. timesert kit - for sale on ebay
  101. Strange rattling
  102. Northstar performance parts
  103. Procedure for Coolant flush
  104. Dynomax - Long life?
  105. Running Functional Test on my 94 Deville Concours.
  106. 94 northstar swap
  107. Airbox Computer?
  108. ICM Replacement
  109. Cranks, but won't start
  110. 96 deville antifreeze coming out exhaust
  111. Its Getting Hot Inside
  112. STS fuel Injection problem NEED HELP
  113. I think I'm missing a few ponies!
  114. 99 Deville Hesitating???
  115. Eliminating the exhaust crossover??
  116. Po138???
  117. Front Valve Cover Removal
  118. You guys read this stuff????
  119. camshaft swap "9" motor to "Y" motor
  120. What is TSB 99-06-04-053?
  121. 94 cadillac concours
  122. Can anyone tell me what these compression numbers mean?
  123. H Gasket Job Ballpark Price Needed for Parts
  124. Heater core replacement, help!
  125. Ah, darn... My 94 Eldorado Is having problems.
  126. Anyone know a reputable transmission shop in Orlando?
  127. Lifter?valve noise
  128. 93 Northstar dies out at idle
  129. Time Sert Kit Needed
  130. Engine Replacement
  131. Broken Head Bolt (small type)
  132. P0741 - TCC System Stuck Off...Now What??
  133. homemade locating dowels - a possibility?
  134. Rear Valve Cover Leak!!
  135. Going from a 4.0 to a 4.6
  136. how many miles on your N*?
  137. Crank Position Sensor Replace Quick Question...
  138. 98 STS code P0404 (and P0300)
  139. Not Nearly As Hard As I Thought
  140. what to do about SO codes...
  141. overfilled tranny....
  142. OBD1 chip reprogramming?
  143. Hey Check Out What Im Doing....
  144. 95-6 transmission harness
  145. new headbolts
  146. Torque Converter Clutch Stuck...How to Fix??
  147. BS? "aftermarket Mass Air Sensor = improved hp, torque and mileage from your car"
  148. pulling engine, top or bottom???
  149. RANGER: Can't Identify Codes...
  150. 1996 1/8th mile times!
  151. '96 SDV Update...2 Codes...Help??
  152. Need a new alternator......
  153. Cranking but not starting.. fuel pump relay?
  154. EXP ID 83, 84, 140, 25 ??? Any Help?
  155. timesert kit for sale
  156. Factory Specs for Compression??
  157. torque wrench advice
  158. Stripped Oil Pan Bolt Hole
  159. Would you like some cheese and crackers with that Whine?
  160. Ready to rebuild-best source for tserts and bearings
  161. Stability Reduced? wut?
  162. Compression numbers for the North*
  163. Options to repair ONE engine block thread
  164. What ever happened to the supercarger for N*?
  165. Torquing of Rocker????
  166. Minor Problem with my 94 SLS
  167. Chip & Bored T/B ???
  168. Why with the Northstar 4.6?
  169. PCM reflash for 95
  170. Sooooo....
  171. cam torque
  172. Blwoin a little smoke..
  173. casting number ID
  174. DANG - Trouble Codes Question
  175. Need some help..abs troubles?
  176. I saw a smoking Deville
  177. PCM Question II
  178. Air intake and airflow
  179. Trans making noise in park and neutral
  180. water pump replacement
  181. Pcm?
  182. STS Engine Cut-Out
  183. 94 SLS 4.6 showing oil pressure
  184. Performance transmission
  185. Aftermarket air intake...
  186. TCS C1287/C1286 help please
  187. Pics..pics...pics.....pics........
  188. Computer Swap Ok?
  189. MIL's - Anyone tried them yet?
  190. Anyone ever done or heard about doing this?
  191. Stumped (P0307)
  192. pressure control circuit code 076
  193. 94 Eldorado 4.6 starting problem
  194. Anyone have sound clips of their exhaust?
  195. 98deville whole computer lit up
  196. TPS autolearn for 1995
  197. '96 DeVille...New Owner...Am I NUTS??
  198. Turbo Track Times
  199. Anyone with rough starts, loss of power..read this.
  200. G-tech pro times.
  201. That's what I call stopping a leak!
  202. Need Valve Body Torque Secs ASAP Please
  203. 98 deville x grandpa mobile
  204. Northstar Experts Please Stand Up.....
  205. Robert Benham
  206. Bleeding air out of cooling system
  207. I think I blew it up
  208. northstar rough accleration/idle
  209. ALBUNDY - can't PM you
  210. Gm top engine cleaner
  211. transmission interchange
  212. 96 deville N* cats question
  213. 94 SLS I seem to be on a losing streak!
  214. Premium vs. Regular
  215. coolant fans
  216. Overheat Part 3
  217. coolant loss
  218. 94 Eldorado Power Steering Fluid?
  219. Big Serts installation
  220. lifter noise?
  221. Some advice
  222. Overheat, Part 2
  223. 2000 STS MAP sensor voltage high?
  224. FRP Help!! ASAP!!
  225. Overheat!
  226. 1999 Eldorado won't start and left me stranded
  227. Anyone use "regular" plug wires in N*?
  228. Higher Stall Converter...
  229. i think i found a fuel control system.
  230. 94 SLS radiator hydraulic line
  231. K&N Intake...I want one!
  232. ABS wiring diagram
  233. What are the available Northstar aftermarket performance parts?
  234. Northstar Oil Leak
  235. Northstar in the 1997-1999 Deville.. questions.
  236. N* with nitrous.
  237. 5000 mile or wait for oil life trigger?
  238. Hi Flow Cat converter to go with Corsa Exhaust, which one?
  239. MSD coils? I hit 104
  240. eldorado1- throttle body for 94 eldo available?
  241. need IAC, TPS, MAP sensors?
  242. 4.6 caddy vs. olds 4.0
  243. Has anyone here added performance parts to a 94 eldorado
  244. Bad coil packs or what?
  245. northstar battery
  246. 94 eldorado bad starter possibly?
  247. Starter change 94 SLS
  248. What's happening to the messages display?
  249. Day after alternator replace, now I need a new belt...coincidence?
  250. block off EGR