: Northstar Engines and System Technical Discussion



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