: Northstar Engines and System Technical Discussion



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  1. P119 - Shorted Fuel Injector Problem
  2. How often do you WOT your north*?
  3. Before i go to beat the crap outta my car - WOT cleaning
  4. denso wires ???
  5. timeserts -so do these things prevent bad head gaskets
  6. Northstar 32 valve good for swap-out?
  7. '94 sts.. ignition coils, ignition control module?
  8. Car will not turn over....
  9. Has anyone ever got the P0741 code?
  10. Are there any good oil additives to add...
  11. I read a post about top tier gasoline....
  12. '95 Concours hard starting when it's cold outside
  13. my service engine soon light is on
  14. bad idea to use 87 octane?
  15. royal purple on a N*
  16. 03 n* and trans in a 99 SLS
  17. What gives the Northstar its "whirring" sound at idle?
  18. 96 sts starter problems, questions?
  19. How would i get a custom pcm?
  20. Beef up a 4.6L NStar?
  21. squeeky serpatine belt *new belt and tensioner*
  22. N* performance
  23. what year was it?
  24. opinions on high flow cats
  25. Gasoline Consumption question
  26. Looking for a Timesert Kit
  27. Engine Performance mods 95 STS
  28. Which oil i need for my 96 eldorado????
  29. How long should I let the N* warm up in the morning?
  30. Timesert Kits?
  31. 1997 SLS (overheating)
  32. Changing brakes on 96 SLS
  33. 2000 dts northstar reliabilty
  34. 2002 ETC Collector-mobile.
  35. What's the difference between the STS and SLS engines?
  36. Internal Mods For Northstar
  37. 99 to 00+ swap differences
  38. stuttering at idle
  39. 1999 Cadillac STS love/hate relationship...
  40. Free Northstar Engine
  41. Help the new guy make a good decision
  42. High Performance Head Gaskets?
  43. Parts ID
  44. Not run for 6 years, what would you do?
  45. 00 PCM on a 99 engine
  46. Blown Headgasket
  47. Aluminum Block porisity
  48. Its Alive
  49. oil life monitor problem
  50. P094 limp mode, no overdrive
  51. Valve Stem Seal Puller
  52. Homemade Valve Spring Compressor
  53. What Should I Pay For Eibachs?
  54. Trans Fluid/Filter change and Coolant drain/refill...
  55. Randomly Creeping High Idle Problem
  56. Stock spark plug wires, 7 or 8 mm?
  57. transmission oil looks dark :S
  58. how many cubic inches
  59. Northstar coil pack firing order
  60. '96 Sls: P1406: Egr
  61. GM Oil Consumption TSB, 2007
  62. Dexcool/Peak coolant
  63. noobie questions
  64. God a northstar sounds sexy, but does something sound odd
  65. Coolant leak...
  66. Northstar motor install
  67. overheating, waterpump? 2002 deville w/ 120k miles
  68. Transmission won't "kickdown" 1994 Eldorado
  69. Blocks cracking on final head torque?
  70. How to remove timeserts?
  71. crankshaft postion sensor
  72. '05 STS - Slipping Transmission at low MPH
  73. rear wheel drive conversion
  74. Cadillac Overheating Issues
  75. humming noise
  76. Clogged vacuum port to fuel pressure regulator
  77. thermostat starting to rise in strange way
  78. overheating , but ez fix?
  79. intermittent "hard start" when car at operating temp
  80. How to tell if block is timeserted?
  81. HELP ME!!!! What is the difference between ECON and Auto
  82. clogged cat = overheating?
  83. 2000-up coil pack crack
  84. 93 sts trans solenoids?
  85. Sealing off a blown head gasket
  86. Rear Main Seal
  87. Oil Life % vs. Reality
  88. Time out!!
  89. engines misses after teardown
  90. 93 STS Northstar won't start
  91. Motor build for sand rail
  92. What kind of gas mileage do you get with your Northstar?
  93. crank sensors
  94. 4.0 Northstar No Start PLEASE HELP!!!
  95. What Northstar do I have?
  96. 96 Eldorado ETC - Blown head gasket
  97. Radiator hoses
  98. headgasket pics
  99. Converter Size
  100. Cylinder Head Reconditioning
  101. 02 sts N* Engine knock
  102. MAF Issues
  103. Oil Pressure Issue - 2000 Cadillac DeVille
  104. Northstar mechanic in the Massachusetts??
  105. Need Help
  106. 93 sts misses and no 2-3 shift
  107. Good fresh tim-serted 94' SLS engine on ebay.
  108. Help, still overheating after headgasket job .
  109. Cooling fan motor bad?
  110. Roots style S/C for the northstar. Anytakers?
  111. front HVAC blower not working on 2000 deville
  112. 1995 STS won't start
  113. 94 4.6L SLS/STS Engine on Ebay
  114. oil level sensor
  115. Thought I had all the parts
  116. '99 Deville stalled and wont start
  117. 96 Deville stumbles on acceleration
  118. Spark Plug Gap
  119. P094 code
  120. 2001 Northstar 4.6 in 99 sts body??
  121. Short runner intake
  122. Bad Waterpump???
  123. Making a trip to fastchip
  124. Fan runs while car is shut off
  125. 94 Seville w/ 93 Engine & Trans (from Eldorado) Shift Problem
  126. Backfired while starting, now I have a miss!
  127. Octane Boosters
  128. Code Question
  129. sluggish n* in a 96 eldo
  130. 03 4.6 Loud engine knock caused by roller rockers
  131. I did the intake and exhaust and no difference
  132. looking at a scangauge 2 / question about pulling codes
  133. starter gives a single click
  134. PCM Data, PD42 Octane?
  135. Made the switch to Rotella...
  136. Crank seal replacement cost??
  137. Headlight problem!
  138. 99 STS blown head gasket. what to do??
  139. Turning off Injectors = Save fuel?
  140. A/C Question
  141. Two pricing question
  142. 1995 STS Performance ?
  143. I052 Code + Stalling + Instrument Panel Reset
  144. Oil pressure Sending Unit
  145. P/S pump leak
  146. Oil Leak
  147. "Low Refrigerant" & "A/C Compressor Off" B1348
  148. 95 Deville Concours performance
  149. '03 STS making turbine-like sound for 5-10 secs on cold start. Any ideas?
  150. new exhaust with #s
  151. Main bearing Torque Values? '94 4.6L SLS
  152. What tools needed to replace idle control motor on N*?
  153. Sooty Stalling 98 Deville
  154. New N* Owner - What to look for?
  155. Will the REAL Dexcool Please Stand Up?
  156. Rustling noise and loss of power
  157. Mass air flow sensor Help please
  158. oil cooler
  159. Engine just dies
  160. Swapping Engine To A Non-Northstar
  161. I have a little oil in the spark plug wells, anything to worry about?
  162. setting timing
  163. How about a Northstar Survival Guide
  164. what color is dexcool?
  165. Engine revving on its own
  166. Northstar remanufactured engine source
  167. "If it wasn't for bad luck....you know the rest
  168. Hitting 150k or more, is it realistic on my car?
  169. Time-Sert
  170. Bouncing Idle, new sparkplugs and oil after seafoam or TEC?
  171. front motor mount
  172. Is it Normal to Leak????
  173. Power steering leak
  174. 99 Northstar burning coolant somewhere!
  175. Data loging with performance monitoring and measuring devices
  176. Help With My 99' N* Hg Job
  177. Low oil pressure warning
  178. engine-trans bolts
  179. Valve Train Ticking
  180. What peformance chip is better for 02 dts?
  181. Wrong headbolts
  182. Changing HG, will heads be ok?
  183. N* Stock Internals
  184. Oil missing from pan
  185. 93-99 Dis ????
  186. So, i just talked to one of the engineers at GM that worked on the northstar
  187. 02 deville spark plug replacement
  188. Finding New Mechanic: Questions to Ask
  189. Myth!!!!! Octane 99 and prior VS 00+
  190. Interesting problem - highway stalling
  191. just installed alternator, NOW WHAT!
  192. How much horsepower in 1997 Professional Chassis (Limo)?
  193. A\C Question!!!!!!!!!!!!!!
  194. How to get out cylinder head alignment bushings???
  195. Tim Allens 400HP naturally asp. N*
  196. cracked engine block
  197. 1997 DeVille Head Gasket Repair
  198. Solid Motor Mount?
  199. lower motor mount
  200. low oil pressure / battery no charge on DIC
  201. '98 STS Camshaft
  202. 05 DTS Northstar fuel economy
  203. Leaking Head Gaskets & Extended Warranty
  204. p1375 icm 24x reference voltage too high and p1350 ignition control system
  205. 00 deville cylinder #4
  206. Northstar overheating causes
  207. locating dowels
  208. 00 deville P0300
  209. Changing spark plugs on a Northstar
  210. can't find anyone who knows the answer
  211. 94 sts strange issue
  212. 30,000 mile service
  213. 98 sts bogging and backfiring
  214. symptoms and cuases of headgasket
  215. 2007 Northstar VIN A PCM Pinouts
  216. Interesting Observation with Volant.
  217. Suggest new catorgory"Northstar Tuning"
  218. Question about Dexcool for the Northstar 4.6
  219. 99 STS in Distress
  220. p0300 Engine Misfire
  221. Need Some Feedback
  222. P0171 and P0174 codes: Intake leak?
  223. TC0073 ???? I have searched with not a REAL answer
  224. carbon on tailpipes, and why?
  225. are time serts asbsolutely necessary
  226. Replacing various parts
  227. new radiator
  228. N* HG Repair, Drop cradle or Pull engine?
  229. Cheap Mechanic in Des Moines?
  230. Cooling Fans NEED HELP.
  231. P094 = Tranny rebuilt?
  232. Problems with N* motor
  233. Considering used Northstar- need advice
  234. More Northstar head gasket questions...
  235. Help with two noises from '97 Northstar
  236. i need help on how to change my headgasket on my 99 seville sls
  237. Back Pressure in Cooling System?
  238. what is OBDII
  239. WANTED Time Sert Kit Rental
  240. **Update** Head gasket on 99 Deville
  241. '94 N* Touring coupe with PO37 code?
  242. Check Engine Codes, vibration
  243. 94 STS Won't accelerate w/o almost stalling the engine.
  244. broken coolant reservoir in my N*
  245. Water pump replacement
  246. 2000 N* is it safe to fill it with a non sinthetic oil?
  247. Sudden drop in fuel economy with AC on
  248. Lambo V12 similiar to N*?
  249. Timing chain tensioner tool
  250. Could a bad catalytic converter also decrease my gas mileage?