: Northstar Engines and System Technical Discussion



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  1. I have a cracked block, what next?
  2. RTV Silicone on Transmission Side Cover?
  3. hypothetically speaking
  4. 02 STS uses tons of oil
  5. Northstar Modifications
  6. 10w40 in N*
  7. 94 STS starts only if pressing gas, idles rough, dies after a couple minutes
  8. upgrading 94 concours
  9. '98 STS valve cover
  10. HELP- Dropped a bolt in the intake valley
  11. Intake manifold crack?
  12. Need Some Code Help 02 Seville
  13. Crankshaft position sensor
  14. engine compatibility
  15. 1994 DeVille Concourse
  16. misfire at idle
  17. Need help removing 99 STS northstar motor
  18. 1st time motor pull for HG on 99 N*, some questions
  19. 97 Etc N* Head Gasket Project
  20. Headgasket Leaks & Repairs
  21. check coolant light on???
  22. High idle/ IAC clicking?
  23. HELP!! Fuel Rail Recall Problems 1996 Seville
  24. Engine stutter/punch
  25. P0741 TCC Stuck ON, tried much, what next
  26. What is the Northstar suppose to sound like?
  27. 2003 Sts 0-70
  28. IAC valve
  29. strange rumble sound during hard acceleration.
  30. 2002 STC - Front Engine Mount Broken
  31. Mobil 1 5W30 meets GM spec 4718M but Mobil 1 10W30 DOES NOT. WHAT GIVES?
  32. Unbolting "beauty cover" on a 1999 Deville What GIVES
  33. Where is my IAT Sensor located? 99 sts
  34. 1997 Seville SLS
  35. Arizona Cadillac Owners Cheap Northstar Engine
  36. questions about PC0300 code on 96 deville
  37. Help with this code...97 Cadillac deville
  38. Drive vs 3 What's better???
  39. Cam numbers?
  40. What Spark Plugs for a 1999 DeVille Northstar?
  41. Using synthetic oil in a Northstar-Why does Cadillac recommend 10W30?
  42. Engine Oil Myths including ZDP by GM
  43. anyone ever use HEAL-A-SEAL
  44. Does vacuum sound from Surge Tank equal head gaskets?
  45. 94 Northstar Flexplate knocking noice. HELP!!
  46. 2003 DHS - Sluggish - EGR?
  47. Whirring/grinding That's Speed Sensitive
  48. 2002 deville/dhs engine trouble
  49. How can I clean the Mass Air Flow??
  50. Thanks for nothing, Northstar.
  51. P0147 - Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 3 - overheating
  52. Crank sensor tech 95 sts
  53. 1st gear WOT
  54. The End
  55. 99 STS Turbo charged video
  56. valve seals
  57. 1999 Seville Ignition DTC Help!
  58. Smoking Northstar?
  59. How long is your NS dipstick?
  60. weep holes
  61. engine swap for a 2001 dts
  62. P0741 - TCC System Stuck Off
  63. new Delco spark plug wires installed
  64. 1998 Deville overheating
  65. Help Having A Heart Attack! P039 / TRanny?
  66. N* programmer?
  67. Is it possible?
  68. Northstar Buick
  69. N* Runs Rough at Cold Start
  70. Bank 1 , 2 ??????
  71. Engine build
  72. P0300,p - Engine Misfire Detected 2002 deville, help please
  73. 2003 Deville with RWD
  74. Starter location
  75. Questions, Questions, and more Questions
  76. 93 sts traction disabled
  77. rental lincoln
  78. how to stay away from power loss
  79. 96 sts supercharger
  80. Are headgasket issues getting more common lately?
  81. 1998 Seville STS Chiptuning
  82. Tranny problems?
  83. Northstar Dyno Registry
  84. New Engine...climate control issues.
  85. Cryogenics
  86. My Photo Essay N* Head Gasket Repair Job
  87. Custom intake and nitrous
  88. 94 concours
  89. SLS Y-Code Engine: Do I need to replace the EGR Valve? PCM?
  90. service manual
  91. Possible Applications for Northstar?
  92. Need help....PLZ!!
  93. so i got a few PCM codes
  94. GM's Veiw on Fuel and Oil Additives
  95. How do I Reset the Change Oil Message?
  96. so when i went to pull codes, it just said all
  97. T061 T083
  98. 97 Deville No Longer Starts
  99. help on my 99' seville sls
  100. Starting issue
  101. 97 SLS Motor Swap to an 03. Is it possible?
  102. head
  103. 99 SLS and Straight DexCool rather than 50/50
  104. No 1st Gear!!!
  105. Cheap Northstar in NH, 35,000 miles
  106. Steering Wheel puff of smoke
  107. on the tranny subject
  108. Talk about luck!!
  109. New motor runs a lil hotter?
  110. o2 sensor question
  111. What is HOT for a blown head gasket
  112. Need Help Info On Where To Buy Rebuilt Engine
  113. compatable parts
  114. NorthStar swap wiring harness
  115. product question
  116. How long do you think caddy will keep the N*?
  117. SS Fuel Rail Removal
  118. Would this be a wise choice? [CAI] on a 184,000 mile northstar
  119. E85 on northstar ???
  120. just got my Plates
  121. 1996 Cadillac DeVille NO CODES ????
  122. Engine code - EOP
  123. Type of engine?
  124. Turbo Charged STS Cadillac
  125. Northstar Cam specs
  126. How can I drive 1000 miles with a coolant leak?
  127. To Rebuild or not.
  128. Do you use dealer for Northstar repairs?
  129. How long do Northstar engines last?
  130. 4.6 northstar fuel pressure?
  131. 150 miles in limp home mode
  132. CKP Question for One of the Techs
  133. Any problems trying 20W-50 in a '97?
  134. New 95' STS owner with tech question
  135. tune up ,whats involved?
  136. Oh shoot...need help ASAP...:(
  137. Radiator Cooling Fans not running
  138. Ram Air! (Maybe)
  139. Engine runs a bit rough during cold winter starts
  140. "break in" period for new Northstar engine
  141. How many miles to you get per tankfull with your north*?
  142. Inserts
  143. GM now offers Premium Remanufactured 4.6L Northstar
  144. 00 to 03 engine in a 98 or 99 Seville.
  145. recommended shop in Toronto/Kitchener area
  146. After head gasket repair engine knocks
  147. transaxel fluid change
  148. N* Injectors and Fuel Pressure Regulator
  149. transaxel filter
  150. 2002 plentum leak
  151. Sts Running Terrible
  152. 96 Cylinder head on 93 block
  153. My car has 121k on it..should I change the trany fluid?
  154. 96 to 99 Eldo, Deville, and 96, 97 Seville Tuning
  155. valve noise at startup
  156. Breaking in a N*
  157. Invisible leak (coolant)
  158. Another seafoam thread
  159. Is there an easy way to change coolant?
  160. what is considered normal coolant temperture for a north*?
  161. please identify mystery black box 01 DTS
  162. Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know
  163. Flushing Radiator
  164. Are there any worthwhile performance mods for the 98 north*?
  165. Was there more then one north* engine in 1998?
  166. Three (3) Codes on 1996 SLS: P1406, P0401, P0108
  167. Northstar Air Consumption.
  168. Eldo Gone....
  169. 4T80-E Transmission Fluid Change - DONE!
  170. P119 - Shorted Fuel Injector Problem
  171. How often do you WOT your north*?
  172. Before i go to beat the crap outta my car - WOT cleaning
  173. denso wires ???
  174. timeserts -so do these things prevent bad head gaskets
  175. Northstar 32 valve good for swap-out?
  176. '94 sts.. ignition coils, ignition control module?
  177. Car will not turn over....
  178. Has anyone ever got the P0741 code?
  179. Are there any good oil additives to add...
  180. I read a post about top tier gasoline....
  181. '95 Concours hard starting when it's cold outside
  182. my service engine soon light is on
  183. bad idea to use 87 octane?
  184. royal purple on a N*
  185. 03 n* and trans in a 99 SLS
  186. What gives the Northstar its "whirring" sound at idle?
  187. 96 sts starter problems, questions?
  188. How would i get a custom pcm?
  189. Beef up a 4.6L NStar?
  190. squeeky serpatine belt *new belt and tensioner*
  191. N* performance
  192. what year was it?
  193. opinions on high flow cats
  194. Gasoline Consumption question
  195. Looking for a Timesert Kit
  196. Engine Performance mods 95 STS
  197. Which oil i need for my 96 eldorado????
  198. How long should I let the N* warm up in the morning?
  199. Timesert Kits?
  200. 1997 SLS (overheating)
  201. Changing brakes on 96 SLS
  202. 2000 dts northstar reliabilty
  203. 2002 ETC Collector-mobile.
  204. What's the difference between the STS and SLS engines?
  205. Internal Mods For Northstar
  206. 99 to 00+ swap differences
  207. stuttering at idle
  208. 1999 Cadillac STS love/hate relationship...
  209. Free Northstar Engine
  210. Help the new guy make a good decision
  211. High Performance Head Gaskets?
  212. Parts ID
  213. Not run for 6 years, what would you do?
  214. 00 PCM on a 99 engine
  215. Blown Headgasket
  216. Aluminum Block porisity
  217. Its Alive
  218. oil life monitor problem
  219. P094 limp mode, no overdrive
  220. Valve Stem Seal Puller
  221. Homemade Valve Spring Compressor
  222. What Should I Pay For Eibachs?
  223. Trans Fluid/Filter change and Coolant drain/refill...
  224. Randomly Creeping High Idle Problem
  225. Stock spark plug wires, 7 or 8 mm?
  226. transmission oil looks dark :S
  227. how many cubic inches
  228. Northstar coil pack firing order
  229. '96 Sls: P1406: Egr
  230. GM Oil Consumption TSB, 2007
  231. Dexcool/Peak coolant
  232. noobie questions
  233. God a northstar sounds sexy, but does something sound odd
  234. Coolant leak...
  235. Northstar motor install
  236. overheating, waterpump? 2002 deville w/ 120k miles
  237. Transmission won't "kickdown" 1994 Eldorado
  238. Blocks cracking on final head torque?
  239. How to remove timeserts?
  240. crankshaft postion sensor
  241. '05 STS - Slipping Transmission at low MPH
  242. rear wheel drive conversion
  243. Cadillac Overheating Issues
  244. humming noise
  245. Clogged vacuum port to fuel pressure regulator
  246. thermostat starting to rise in strange way
  247. overheating , but ez fix?
  248. intermittent "hard start" when car at operating temp
  249. How to tell if block is timeserted?
  250. HELP ME!!!! What is the difference between ECON and Auto