: Northstar Engines and System Technical Discussion



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  1. To Rebuild or not.
  2. Do you use dealer for Northstar repairs?
  3. How long do Northstar engines last?
  4. 4.6 northstar fuel pressure?
  5. 150 miles in limp home mode
  6. CKP Question for One of the Techs
  7. Any problems trying 20W-50 in a '97?
  8. New 95' STS owner with tech question
  9. tune up ,whats involved?
  10. Oh shoot...need help ASAP...:(
  11. Radiator Cooling Fans not running
  12. Ram Air! (Maybe)
  13. Engine runs a bit rough during cold winter starts
  14. "break in" period for new Northstar engine
  15. How many miles to you get per tankfull with your north*?
  16. Inserts
  17. GM now offers Premium Remanufactured 4.6L Northstar
  18. 00 to 03 engine in a 98 or 99 Seville.
  19. recommended shop in Toronto/Kitchener area
  20. After head gasket repair engine knocks
  21. transaxel fluid change
  22. N* Injectors and Fuel Pressure Regulator
  23. transaxel filter
  24. 2002 plentum leak
  25. Sts Running Terrible
  26. 96 Cylinder head on 93 block
  27. My car has 121k on it..should I change the trany fluid?
  28. 96 to 99 Eldo, Deville, and 96, 97 Seville Tuning
  29. valve noise at startup
  30. Breaking in a N*
  31. Invisible leak (coolant)
  32. Another seafoam thread
  33. Is there an easy way to change coolant?
  34. what is considered normal coolant temperture for a north*?
  35. please identify mystery black box 01 DTS
  36. Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know
  37. Flushing Radiator
  38. Are there any worthwhile performance mods for the 98 north*?
  39. Was there more then one north* engine in 1998?
  40. Three (3) Codes on 1996 SLS: P1406, P0401, P0108
  41. Northstar Air Consumption.
  42. Eldo Gone....
  43. 4T80-E Transmission Fluid Change - DONE!
  44. P119 - Shorted Fuel Injector Problem
  45. How often do you WOT your north*?
  46. Before i go to beat the crap outta my car - WOT cleaning
  47. denso wires ???
  48. timeserts -so do these things prevent bad head gaskets
  49. Northstar 32 valve good for swap-out?
  50. '94 sts.. ignition coils, ignition control module?
  51. Car will not turn over....
  52. Has anyone ever got the P0741 code?
  53. Are there any good oil additives to add...
  54. I read a post about top tier gasoline....
  55. '95 Concours hard starting when it's cold outside
  56. my service engine soon light is on
  57. bad idea to use 87 octane?
  58. royal purple on a N*
  59. 03 n* and trans in a 99 SLS
  60. What gives the Northstar its "whirring" sound at idle?
  61. 96 sts starter problems, questions?
  62. How would i get a custom pcm?
  63. Beef up a 4.6L NStar?
  64. squeeky serpatine belt *new belt and tensioner*
  65. N* performance
  66. what year was it?
  67. opinions on high flow cats
  68. Gasoline Consumption question
  69. Looking for a Timesert Kit
  70. Engine Performance mods 95 STS
  71. Which oil i need for my 96 eldorado????
  72. How long should I let the N* warm up in the morning?
  73. Timesert Kits?
  74. 1997 SLS (overheating)
  75. Changing brakes on 96 SLS
  76. 2000 dts northstar reliabilty
  77. 2002 ETC Collector-mobile.
  78. What's the difference between the STS and SLS engines?
  79. Internal Mods For Northstar
  80. 99 to 00+ swap differences
  81. stuttering at idle
  82. 1999 Cadillac STS love/hate relationship...
  83. Free Northstar Engine
  84. Help the new guy make a good decision
  85. High Performance Head Gaskets?
  86. Parts ID
  87. Not run for 6 years, what would you do?
  88. 00 PCM on a 99 engine
  89. Blown Headgasket
  90. Aluminum Block porisity
  91. Its Alive
  92. oil life monitor problem
  93. P094 limp mode, no overdrive
  94. Valve Stem Seal Puller
  95. Homemade Valve Spring Compressor
  96. What Should I Pay For Eibachs?
  97. Trans Fluid/Filter change and Coolant drain/refill...
  98. Randomly Creeping High Idle Problem
  99. Stock spark plug wires, 7 or 8 mm?
  100. transmission oil looks dark :S
  101. how many cubic inches
  102. Northstar coil pack firing order
  103. '96 Sls: P1406: Egr
  104. GM Oil Consumption TSB, 2007
  105. Dexcool/Peak coolant
  106. noobie questions
  107. God a northstar sounds sexy, but does something sound odd
  108. Coolant leak...
  109. Northstar motor install
  110. overheating, waterpump? 2002 deville w/ 120k miles
  111. Transmission won't "kickdown" 1994 Eldorado
  112. Blocks cracking on final head torque?
  113. How to remove timeserts?
  114. crankshaft postion sensor
  115. '05 STS - Slipping Transmission at low MPH
  116. rear wheel drive conversion
  117. Cadillac Overheating Issues
  118. humming noise
  119. Clogged vacuum port to fuel pressure regulator
  120. thermostat starting to rise in strange way
  121. overheating , but ez fix?
  122. intermittent "hard start" when car at operating temp
  123. How to tell if block is timeserted?
  124. HELP ME!!!! What is the difference between ECON and Auto
  125. clogged cat = overheating?
  126. 2000-up coil pack crack
  127. 93 sts trans solenoids?
  128. Sealing off a blown head gasket
  129. Rear Main Seal
  130. Oil Life % vs. Reality
  131. Time out!!
  132. engines misses after teardown
  133. 93 STS Northstar won't start
  134. Motor build for sand rail
  135. What kind of gas mileage do you get with your Northstar?
  136. crank sensors
  137. 4.0 Northstar No Start PLEASE HELP!!!
  138. What Northstar do I have?
  139. 96 Eldorado ETC - Blown head gasket
  140. Radiator hoses
  141. headgasket pics
  142. Converter Size
  143. Cylinder Head Reconditioning
  144. 02 sts N* Engine knock
  145. MAF Issues
  146. Oil Pressure Issue - 2000 Cadillac DeVille
  147. Northstar mechanic in the Massachusetts??
  148. Need Help
  149. 93 sts misses and no 2-3 shift
  150. Good fresh tim-serted 94' SLS engine on ebay.
  151. Help, still overheating after headgasket job .
  152. Cooling fan motor bad?
  153. Roots style S/C for the northstar. Anytakers?
  154. front HVAC blower not working on 2000 deville
  155. 1995 STS won't start
  156. 94 4.6L SLS/STS Engine on Ebay
  157. oil level sensor
  158. Thought I had all the parts
  159. '99 Deville stalled and wont start
  160. 96 Deville stumbles on acceleration
  161. Spark Plug Gap
  162. P094 code
  163. 2001 Northstar 4.6 in 99 sts body??
  164. Short runner intake
  165. Bad Waterpump???
  166. Making a trip to fastchip
  167. Fan runs while car is shut off
  168. 94 Seville w/ 93 Engine & Trans (from Eldorado) Shift Problem
  169. Backfired while starting, now I have a miss!
  170. Octane Boosters
  171. Code Question
  172. sluggish n* in a 96 eldo
  173. 03 4.6 Loud engine knock caused by roller rockers
  174. I did the intake and exhaust and no difference
  175. looking at a scangauge 2 / question about pulling codes
  176. starter gives a single click
  177. PCM Data, PD42 Octane?
  178. Made the switch to Rotella...
  179. Crank seal replacement cost??
  180. Headlight problem!
  181. 99 STS blown head gasket. what to do??
  182. Turning off Injectors = Save fuel?
  183. A/C Question
  184. Two pricing question
  185. 1995 STS Performance ?
  186. I052 Code + Stalling + Instrument Panel Reset
  187. Oil pressure Sending Unit
  188. P/S pump leak
  189. Oil Leak
  190. "Low Refrigerant" & "A/C Compressor Off" B1348
  191. 95 Deville Concours performance
  192. '03 STS making turbine-like sound for 5-10 secs on cold start. Any ideas?
  193. new exhaust with #s
  194. Main bearing Torque Values? '94 4.6L SLS
  195. What tools needed to replace idle control motor on N*?
  196. Sooty Stalling 98 Deville
  197. New N* Owner - What to look for?
  198. Will the REAL Dexcool Please Stand Up?
  199. Rustling noise and loss of power
  200. Mass air flow sensor Help please
  201. oil cooler
  202. Engine just dies
  203. Swapping Engine To A Non-Northstar
  204. I have a little oil in the spark plug wells, anything to worry about?
  205. setting timing
  206. How about a Northstar Survival Guide
  207. what color is dexcool?
  208. Engine revving on its own
  209. Northstar remanufactured engine source
  210. "If it wasn't for bad luck....you know the rest
  211. Hitting 150k or more, is it realistic on my car?
  212. Time-Sert
  213. Bouncing Idle, new sparkplugs and oil after seafoam or TEC?
  214. front motor mount
  215. Is it Normal to Leak????
  216. Power steering leak
  217. 99 Northstar burning coolant somewhere!
  218. Data loging with performance monitoring and measuring devices
  219. Help With My 99' N* Hg Job
  220. Low oil pressure warning
  221. engine-trans bolts
  222. Valve Train Ticking
  223. What peformance chip is better for 02 dts?
  224. Wrong headbolts
  225. Changing HG, will heads be ok?
  226. N* Stock Internals
  227. Oil missing from pan
  228. 93-99 Dis ????
  229. So, i just talked to one of the engineers at GM that worked on the northstar
  230. 02 deville spark plug replacement
  231. Finding New Mechanic: Questions to Ask
  232. Myth!!!!! Octane 99 and prior VS 00+
  233. Interesting problem - highway stalling
  234. just installed alternator, NOW WHAT!
  235. How much horsepower in 1997 Professional Chassis (Limo)?
  236. A\C Question!!!!!!!!!!!!!!
  237. How to get out cylinder head alignment bushings???
  238. Tim Allens 400HP naturally asp. N*
  239. cracked engine block
  240. 1997 DeVille Head Gasket Repair
  241. Solid Motor Mount?
  242. lower motor mount
  243. low oil pressure / battery no charge on DIC
  244. '98 STS Camshaft
  245. 05 DTS Northstar fuel economy
  246. Leaking Head Gaskets & Extended Warranty
  247. p1375 icm 24x reference voltage too high and p1350 ignition control system
  248. 00 deville cylinder #4
  249. Northstar overheating causes
  250. locating dowels