: Northstar Engines and System Technical Discussion



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  1. Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know
  2. Flushing Radiator
  3. Are there any worthwhile performance mods for the 98 north*?
  4. Was there more then one north* engine in 1998?
  5. Three (3) Codes on 1996 SLS: P1406, P0401, P0108
  6. Northstar Air Consumption.
  7. Eldo Gone....
  8. 4T80-E Transmission Fluid Change - DONE!
  9. P119 - Shorted Fuel Injector Problem
  10. How often do you WOT your north*?
  11. Before i go to beat the crap outta my car - WOT cleaning
  12. denso wires ???
  13. timeserts -so do these things prevent bad head gaskets
  14. Northstar 32 valve good for swap-out?
  15. '94 sts.. ignition coils, ignition control module?
  16. Car will not turn over....
  17. Has anyone ever got the P0741 code?
  18. Are there any good oil additives to add...
  19. I read a post about top tier gasoline....
  20. '95 Concours hard starting when it's cold outside
  21. my service engine soon light is on
  22. bad idea to use 87 octane?
  23. royal purple on a N*
  24. 03 n* and trans in a 99 SLS
  25. What gives the Northstar its "whirring" sound at idle?
  26. 96 sts starter problems, questions?
  27. How would i get a custom pcm?
  28. Beef up a 4.6L NStar?
  29. squeeky serpatine belt *new belt and tensioner*
  30. N* performance
  31. what year was it?
  32. opinions on high flow cats
  33. Gasoline Consumption question
  34. Looking for a Timesert Kit
  35. Engine Performance mods 95 STS
  36. Which oil i need for my 96 eldorado????
  37. How long should I let the N* warm up in the morning?
  38. Timesert Kits?
  39. 1997 SLS (overheating)
  40. Changing brakes on 96 SLS
  41. 2000 dts northstar reliabilty
  42. 2002 ETC Collector-mobile.
  43. What's the difference between the STS and SLS engines?
  44. Internal Mods For Northstar
  45. 99 to 00+ swap differences
  46. stuttering at idle
  47. 1999 Cadillac STS love/hate relationship...
  48. Free Northstar Engine
  49. Help the new guy make a good decision
  50. High Performance Head Gaskets?
  51. Parts ID
  52. Not run for 6 years, what would you do?
  53. 00 PCM on a 99 engine
  54. Blown Headgasket
  55. Aluminum Block porisity
  56. Its Alive
  57. oil life monitor problem
  58. P094 limp mode, no overdrive
  59. Valve Stem Seal Puller
  60. Homemade Valve Spring Compressor
  61. What Should I Pay For Eibachs?
  62. Trans Fluid/Filter change and Coolant drain/refill...
  63. Randomly Creeping High Idle Problem
  64. Stock spark plug wires, 7 or 8 mm?
  65. transmission oil looks dark :S
  66. how many cubic inches
  67. Northstar coil pack firing order
  68. '96 Sls: P1406: Egr
  69. GM Oil Consumption TSB, 2007
  70. Dexcool/Peak coolant
  71. noobie questions
  72. God a northstar sounds sexy, but does something sound odd
  73. Coolant leak...
  74. Northstar motor install
  75. overheating, waterpump? 2002 deville w/ 120k miles
  76. Transmission won't "kickdown" 1994 Eldorado
  77. Blocks cracking on final head torque?
  78. How to remove timeserts?
  79. crankshaft postion sensor
  80. '05 STS - Slipping Transmission at low MPH
  81. rear wheel drive conversion
  82. Cadillac Overheating Issues
  83. humming noise
  84. Clogged vacuum port to fuel pressure regulator
  85. thermostat starting to rise in strange way
  86. overheating , but ez fix?
  87. intermittent "hard start" when car at operating temp
  88. How to tell if block is timeserted?
  89. HELP ME!!!! What is the difference between ECON and Auto
  90. clogged cat = overheating?
  91. 2000-up coil pack crack
  92. 93 sts trans solenoids?
  93. Sealing off a blown head gasket
  94. Rear Main Seal
  95. Oil Life % vs. Reality
  96. Time out!!
  97. engines misses after teardown
  98. 93 STS Northstar won't start
  99. Motor build for sand rail
  100. What kind of gas mileage do you get with your Northstar?
  101. crank sensors
  102. 4.0 Northstar No Start PLEASE HELP!!!
  103. What Northstar do I have?
  104. 96 Eldorado ETC - Blown head gasket
  105. Radiator hoses
  106. headgasket pics
  107. Converter Size
  108. Cylinder Head Reconditioning
  109. 02 sts N* Engine knock
  110. MAF Issues
  111. Oil Pressure Issue - 2000 Cadillac DeVille
  112. Northstar mechanic in the Massachusetts??
  113. Need Help
  114. 93 sts misses and no 2-3 shift
  115. Good fresh tim-serted 94' SLS engine on ebay.
  116. Help, still overheating after headgasket job .
  117. Cooling fan motor bad?
  118. Roots style S/C for the northstar. Anytakers?
  119. front HVAC blower not working on 2000 deville
  120. 1995 STS won't start
  121. 94 4.6L SLS/STS Engine on Ebay
  122. oil level sensor
  123. Thought I had all the parts
  124. '99 Deville stalled and wont start
  125. 96 Deville stumbles on acceleration
  126. Spark Plug Gap
  127. P094 code
  128. 2001 Northstar 4.6 in 99 sts body??
  129. Short runner intake
  130. Bad Waterpump???
  131. Making a trip to fastchip
  132. Fan runs while car is shut off
  133. 94 Seville w/ 93 Engine & Trans (from Eldorado) Shift Problem
  134. Backfired while starting, now I have a miss!
  135. Octane Boosters
  136. Code Question
  137. sluggish n* in a 96 eldo
  138. 03 4.6 Loud engine knock caused by roller rockers
  139. I did the intake and exhaust and no difference
  140. looking at a scangauge 2 / question about pulling codes
  141. starter gives a single click
  142. PCM Data, PD42 Octane?
  143. Made the switch to Rotella...
  144. Crank seal replacement cost??
  145. Headlight problem!
  146. 99 STS blown head gasket. what to do??
  147. Turning off Injectors = Save fuel?
  148. A/C Question
  149. Two pricing question
  150. 1995 STS Performance ?
  151. I052 Code + Stalling + Instrument Panel Reset
  152. Oil pressure Sending Unit
  153. P/S pump leak
  154. Oil Leak
  155. "Low Refrigerant" & "A/C Compressor Off" B1348
  156. 95 Deville Concours performance
  157. '03 STS making turbine-like sound for 5-10 secs on cold start. Any ideas?
  158. new exhaust with #s
  159. Main bearing Torque Values? '94 4.6L SLS
  160. What tools needed to replace idle control motor on N*?
  161. Sooty Stalling 98 Deville
  162. New N* Owner - What to look for?
  163. Will the REAL Dexcool Please Stand Up?
  164. Rustling noise and loss of power
  165. Mass air flow sensor Help please
  166. oil cooler
  167. Engine just dies
  168. Swapping Engine To A Non-Northstar
  169. I have a little oil in the spark plug wells, anything to worry about?
  170. setting timing
  171. How about a Northstar Survival Guide
  172. what color is dexcool?
  173. Engine revving on its own
  174. Northstar remanufactured engine source
  175. "If it wasn't for bad luck....you know the rest
  176. Hitting 150k or more, is it realistic on my car?
  177. Time-Sert
  178. Bouncing Idle, new sparkplugs and oil after seafoam or TEC?
  179. front motor mount
  180. Is it Normal to Leak????
  181. Power steering leak
  182. 99 Northstar burning coolant somewhere!
  183. Data loging with performance monitoring and measuring devices
  184. Help With My 99' N* Hg Job
  185. Low oil pressure warning
  186. engine-trans bolts
  187. Valve Train Ticking
  188. What peformance chip is better for 02 dts?
  189. Wrong headbolts
  190. Changing HG, will heads be ok?
  191. N* Stock Internals
  192. Oil missing from pan
  193. 93-99 Dis ????
  194. So, i just talked to one of the engineers at GM that worked on the northstar
  195. 02 deville spark plug replacement
  196. Finding New Mechanic: Questions to Ask
  197. Myth!!!!! Octane 99 and prior VS 00+
  198. Interesting problem - highway stalling
  199. just installed alternator, NOW WHAT!
  200. How much horsepower in 1997 Professional Chassis (Limo)?
  201. A\C Question!!!!!!!!!!!!!!
  202. How to get out cylinder head alignment bushings???
  203. Tim Allens 400HP naturally asp. N*
  204. cracked engine block
  205. 1997 DeVille Head Gasket Repair
  206. Solid Motor Mount?
  207. lower motor mount
  208. low oil pressure / battery no charge on DIC
  209. '98 STS Camshaft
  210. 05 DTS Northstar fuel economy
  211. Leaking Head Gaskets & Extended Warranty
  212. p1375 icm 24x reference voltage too high and p1350 ignition control system
  213. 00 deville cylinder #4
  214. Northstar overheating causes
  215. locating dowels
  216. 00 deville P0300
  217. Changing spark plugs on a Northstar
  218. can't find anyone who knows the answer
  219. 94 sts strange issue
  220. 30,000 mile service
  221. 98 sts bogging and backfiring
  222. symptoms and cuases of headgasket
  223. 2007 Northstar VIN A PCM Pinouts
  224. Interesting Observation with Volant.
  225. Suggest new catorgory"Northstar Tuning"
  226. Question about Dexcool for the Northstar 4.6
  227. 99 STS in Distress
  228. p0300 Engine Misfire
  229. Need Some Feedback
  230. P0171 and P0174 codes: Intake leak?
  231. TC0073 ???? I have searched with not a REAL answer
  232. carbon on tailpipes, and why?
  233. are time serts asbsolutely necessary
  234. Replacing various parts
  235. new radiator
  236. N* HG Repair, Drop cradle or Pull engine?
  237. Cheap Mechanic in Des Moines?
  238. Cooling Fans NEED HELP.
  239. P094 = Tranny rebuilt?
  240. Problems with N* motor
  241. Considering used Northstar- need advice
  242. More Northstar head gasket questions...
  243. Help with two noises from '97 Northstar
  244. i need help on how to change my headgasket on my 99 seville sls
  245. Back Pressure in Cooling System?
  246. what is OBDII
  247. WANTED Time Sert Kit Rental
  248. **Update** Head gasket on 99 Deville
  249. '94 N* Touring coupe with PO37 code?
  250. Check Engine Codes, vibration