: Northstar Engines and System Technical Discussion



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  1. 94 concours
  2. SLS Y-Code Engine: Do I need to replace the EGR Valve? PCM?
  3. service manual
  4. Possible Applications for Northstar?
  5. Need help....PLZ!!
  6. so i got a few PCM codes
  7. GM's Veiw on Fuel and Oil Additives
  8. How do I Reset the Change Oil Message?
  9. so when i went to pull codes, it just said all
  10. T061 T083
  11. 97 Deville No Longer Starts
  12. help on my 99' seville sls
  13. Starting issue
  14. 97 SLS Motor Swap to an 03. Is it possible?
  15. head
  16. 99 SLS and Straight DexCool rather than 50/50
  17. No 1st Gear!!!
  18. Cheap Northstar in NH, 35,000 miles
  19. Steering Wheel puff of smoke
  20. on the tranny subject
  21. Talk about luck!!
  22. New motor runs a lil hotter?
  23. o2 sensor question
  24. What is HOT for a blown head gasket
  25. Need Help Info On Where To Buy Rebuilt Engine
  26. compatable parts
  27. NorthStar swap wiring harness
  28. product question
  29. How long do you think caddy will keep the N*?
  30. SS Fuel Rail Removal
  31. Would this be a wise choice? [CAI] on a 184,000 mile northstar
  32. E85 on northstar ???
  33. just got my Plates
  34. 1996 Cadillac DeVille NO CODES ????
  35. Engine code - EOP
  36. Type of engine?
  37. Turbo Charged STS Cadillac
  38. Northstar Cam specs
  39. How can I drive 1000 miles with a coolant leak?
  40. To Rebuild or not.
  41. Do you use dealer for Northstar repairs?
  42. How long do Northstar engines last?
  43. 4.6 northstar fuel pressure?
  44. 150 miles in limp home mode
  45. CKP Question for One of the Techs
  46. Any problems trying 20W-50 in a '97?
  47. New 95' STS owner with tech question
  48. tune up ,whats involved?
  49. Oh shoot...need help ASAP...:(
  50. Radiator Cooling Fans not running
  51. Ram Air! (Maybe)
  52. Engine runs a bit rough during cold winter starts
  53. "break in" period for new Northstar engine
  54. How many miles to you get per tankfull with your north*?
  55. Inserts
  56. GM now offers Premium Remanufactured 4.6L Northstar
  57. 00 to 03 engine in a 98 or 99 Seville.
  58. recommended shop in Toronto/Kitchener area
  59. After head gasket repair engine knocks
  60. transaxel fluid change
  61. N* Injectors and Fuel Pressure Regulator
  62. transaxel filter
  63. 2002 plentum leak
  64. Sts Running Terrible
  65. 96 Cylinder head on 93 block
  66. My car has 121k on it..should I change the trany fluid?
  67. 96 to 99 Eldo, Deville, and 96, 97 Seville Tuning
  68. valve noise at startup
  69. Breaking in a N*
  70. Invisible leak (coolant)
  71. Another seafoam thread
  72. Is there an easy way to change coolant?
  73. what is considered normal coolant temperture for a north*?
  74. please identify mystery black box 01 DTS
  75. Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know
  76. Flushing Radiator
  77. Are there any worthwhile performance mods for the 98 north*?
  78. Was there more then one north* engine in 1998?
  79. Three (3) Codes on 1996 SLS: P1406, P0401, P0108
  80. Northstar Air Consumption.
  81. Eldo Gone....
  82. 4T80-E Transmission Fluid Change - DONE!
  83. P119 - Shorted Fuel Injector Problem
  84. How often do you WOT your north*?
  85. Before i go to beat the crap outta my car - WOT cleaning
  86. denso wires ???
  87. timeserts -so do these things prevent bad head gaskets
  88. Northstar 32 valve good for swap-out?
  89. '94 sts.. ignition coils, ignition control module?
  90. Car will not turn over....
  91. Has anyone ever got the P0741 code?
  92. Are there any good oil additives to add...
  93. I read a post about top tier gasoline....
  94. '95 Concours hard starting when it's cold outside
  95. my service engine soon light is on
  96. bad idea to use 87 octane?
  97. royal purple on a N*
  98. 03 n* and trans in a 99 SLS
  99. What gives the Northstar its "whirring" sound at idle?
  100. 96 sts starter problems, questions?
  101. How would i get a custom pcm?
  102. Beef up a 4.6L NStar?
  103. squeeky serpatine belt *new belt and tensioner*
  104. N* performance
  105. what year was it?
  106. opinions on high flow cats
  107. Gasoline Consumption question
  108. Looking for a Timesert Kit
  109. Engine Performance mods 95 STS
  110. Which oil i need for my 96 eldorado????
  111. How long should I let the N* warm up in the morning?
  112. Timesert Kits?
  113. 1997 SLS (overheating)
  114. Changing brakes on 96 SLS
  115. 2000 dts northstar reliabilty
  116. 2002 ETC Collector-mobile.
  117. What's the difference between the STS and SLS engines?
  118. Internal Mods For Northstar
  119. 99 to 00+ swap differences
  120. stuttering at idle
  121. 1999 Cadillac STS love/hate relationship...
  122. Free Northstar Engine
  123. Help the new guy make a good decision
  124. High Performance Head Gaskets?
  125. Parts ID
  126. Not run for 6 years, what would you do?
  127. 00 PCM on a 99 engine
  128. Blown Headgasket
  129. Aluminum Block porisity
  130. Its Alive
  131. oil life monitor problem
  132. P094 limp mode, no overdrive
  133. Valve Stem Seal Puller
  134. Homemade Valve Spring Compressor
  135. What Should I Pay For Eibachs?
  136. Trans Fluid/Filter change and Coolant drain/refill...
  137. Randomly Creeping High Idle Problem
  138. Stock spark plug wires, 7 or 8 mm?
  139. transmission oil looks dark :S
  140. how many cubic inches
  141. Northstar coil pack firing order
  142. '96 Sls: P1406: Egr
  143. GM Oil Consumption TSB, 2007
  144. Dexcool/Peak coolant
  145. noobie questions
  146. God a northstar sounds sexy, but does something sound odd
  147. Coolant leak...
  148. Northstar motor install
  149. overheating, waterpump? 2002 deville w/ 120k miles
  150. Transmission won't "kickdown" 1994 Eldorado
  151. Blocks cracking on final head torque?
  152. How to remove timeserts?
  153. crankshaft postion sensor
  154. '05 STS - Slipping Transmission at low MPH
  155. rear wheel drive conversion
  156. Cadillac Overheating Issues
  157. humming noise
  158. Clogged vacuum port to fuel pressure regulator
  159. thermostat starting to rise in strange way
  160. overheating , but ez fix?
  161. intermittent "hard start" when car at operating temp
  162. How to tell if block is timeserted?
  163. HELP ME!!!! What is the difference between ECON and Auto
  164. clogged cat = overheating?
  165. 2000-up coil pack crack
  166. 93 sts trans solenoids?
  167. Sealing off a blown head gasket
  168. Rear Main Seal
  169. Oil Life % vs. Reality
  170. Time out!!
  171. engines misses after teardown
  172. 93 STS Northstar won't start
  173. Motor build for sand rail
  174. What kind of gas mileage do you get with your Northstar?
  175. crank sensors
  176. 4.0 Northstar No Start PLEASE HELP!!!
  177. What Northstar do I have?
  178. 96 Eldorado ETC - Blown head gasket
  179. Radiator hoses
  180. headgasket pics
  181. Converter Size
  182. Cylinder Head Reconditioning
  183. 02 sts N* Engine knock
  184. MAF Issues
  185. Oil Pressure Issue - 2000 Cadillac DeVille
  186. Northstar mechanic in the Massachusetts??
  187. Need Help
  188. 93 sts misses and no 2-3 shift
  189. Good fresh tim-serted 94' SLS engine on ebay.
  190. Help, still overheating after headgasket job .
  191. Cooling fan motor bad?
  192. Roots style S/C for the northstar. Anytakers?
  193. front HVAC blower not working on 2000 deville
  194. 1995 STS won't start
  195. 94 4.6L SLS/STS Engine on Ebay
  196. oil level sensor
  197. Thought I had all the parts
  198. '99 Deville stalled and wont start
  199. 96 Deville stumbles on acceleration
  200. Spark Plug Gap
  201. P094 code
  202. 2001 Northstar 4.6 in 99 sts body??
  203. Short runner intake
  204. Bad Waterpump???
  205. Making a trip to fastchip
  206. Fan runs while car is shut off
  207. 94 Seville w/ 93 Engine & Trans (from Eldorado) Shift Problem
  208. Backfired while starting, now I have a miss!
  209. Octane Boosters
  210. Code Question
  211. sluggish n* in a 96 eldo
  212. 03 4.6 Loud engine knock caused by roller rockers
  213. I did the intake and exhaust and no difference
  214. looking at a scangauge 2 / question about pulling codes
  215. starter gives a single click
  216. PCM Data, PD42 Octane?
  217. Made the switch to Rotella...
  218. Crank seal replacement cost??
  219. Headlight problem!
  220. 99 STS blown head gasket. what to do??
  221. Turning off Injectors = Save fuel?
  222. A/C Question
  223. Two pricing question
  224. 1995 STS Performance ?
  225. I052 Code + Stalling + Instrument Panel Reset
  226. Oil pressure Sending Unit
  227. P/S pump leak
  228. Oil Leak
  229. "Low Refrigerant" & "A/C Compressor Off" B1348
  230. 95 Deville Concours performance
  231. '03 STS making turbine-like sound for 5-10 secs on cold start. Any ideas?
  232. new exhaust with #s
  233. Main bearing Torque Values? '94 4.6L SLS
  234. What tools needed to replace idle control motor on N*?
  235. Sooty Stalling 98 Deville
  236. New N* Owner - What to look for?
  237. Will the REAL Dexcool Please Stand Up?
  238. Rustling noise and loss of power
  239. Mass air flow sensor Help please
  240. oil cooler
  241. Engine just dies
  242. Swapping Engine To A Non-Northstar
  243. I have a little oil in the spark plug wells, anything to worry about?
  244. setting timing
  245. How about a Northstar Survival Guide
  246. what color is dexcool?
  247. Engine revving on its own
  248. Northstar remanufactured engine source
  249. "If it wasn't for bad luck....you know the rest
  250. Hitting 150k or more, is it realistic on my car?