: Northstar Engines and System Technical Discussion



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  1. Northstar shifting past redline
  2. 93/94 engines
  3. No Heat at Idle
  4. What's involved to drop the oil pan?
  5. Iradium spark plugs for 99deville? Better or worse? What the best plug & wires??
  6. Tell me about Force Motors/pressure control solenoids
  7. 99 Head Gasket Warranty?
  8. How can u save gas on a 99 deville?
  9. PC0327 - 96DeVille
  10. 1995 STS Cooling problems?
  11. Sts engine has this knocking sound
  12. Heater Core Leak/ Need Some Help, Please
  13. GM MAF sensor information and Discussion
  14. bottom end problems??
  15. Car runs hot but doesn't over heat
  16. Fuel Line Leak
  17. I have a cracked block, what next?
  18. RTV Silicone on Transmission Side Cover?
  19. hypothetically speaking
  20. 02 STS uses tons of oil
  21. Northstar Modifications
  22. 10w40 in N*
  23. 94 STS starts only if pressing gas, idles rough, dies after a couple minutes
  24. upgrading 94 concours
  25. '98 STS valve cover
  26. HELP- Dropped a bolt in the intake valley
  27. Intake manifold crack?
  28. Need Some Code Help 02 Seville
  29. Crankshaft position sensor
  30. engine compatibility
  31. 1994 DeVille Concourse
  32. misfire at idle
  33. Need help removing 99 STS northstar motor
  34. 1st time motor pull for HG on 99 N*, some questions
  35. 97 Etc N* Head Gasket Project
  36. Headgasket Leaks & Repairs
  37. check coolant light on???
  38. High idle/ IAC clicking?
  39. HELP!! Fuel Rail Recall Problems 1996 Seville
  40. Engine stutter/punch
  41. P0741 TCC Stuck ON, tried much, what next
  42. What is the Northstar suppose to sound like?
  43. 2003 Sts 0-70
  44. IAC valve
  45. strange rumble sound during hard acceleration.
  46. 2002 STC - Front Engine Mount Broken
  47. Mobil 1 5W30 meets GM spec 4718M but Mobil 1 10W30 DOES NOT. WHAT GIVES?
  48. Unbolting "beauty cover" on a 1999 Deville What GIVES
  49. Where is my IAT Sensor located? 99 sts
  50. 1997 Seville SLS
  51. Arizona Cadillac Owners Cheap Northstar Engine
  52. questions about PC0300 code on 96 deville
  53. Help with this code...97 Cadillac deville
  54. Drive vs 3 What's better???
  55. Cam numbers?
  56. What Spark Plugs for a 1999 DeVille Northstar?
  57. Using synthetic oil in a Northstar-Why does Cadillac recommend 10W30?
  58. Engine Oil Myths including ZDP by GM
  59. anyone ever use HEAL-A-SEAL
  60. Does vacuum sound from Surge Tank equal head gaskets?
  61. 94 Northstar Flexplate knocking noice. HELP!!
  62. 2003 DHS - Sluggish - EGR?
  63. Whirring/grinding That's Speed Sensitive
  64. 2002 deville/dhs engine trouble
  65. How can I clean the Mass Air Flow??
  66. Thanks for nothing, Northstar.
  67. P0147 - Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 3 - overheating
  68. Crank sensor tech 95 sts
  69. 1st gear WOT
  70. The End
  71. 99 STS Turbo charged video
  72. valve seals
  73. 1999 Seville Ignition DTC Help!
  74. Smoking Northstar?
  75. How long is your NS dipstick?
  76. weep holes
  77. engine swap for a 2001 dts
  78. P0741 - TCC System Stuck Off
  79. new Delco spark plug wires installed
  80. 1998 Deville overheating
  81. Help Having A Heart Attack! P039 / TRanny?
  82. N* programmer?
  83. Is it possible?
  84. Northstar Buick
  85. N* Runs Rough at Cold Start
  86. Bank 1 , 2 ??????
  87. Engine build
  88. P0300,p - Engine Misfire Detected 2002 deville, help please
  89. 2003 Deville with RWD
  90. Starter location
  91. Questions, Questions, and more Questions
  92. 93 sts traction disabled
  93. rental lincoln
  94. how to stay away from power loss
  95. 96 sts supercharger
  96. Are headgasket issues getting more common lately?
  97. 1998 Seville STS Chiptuning
  98. Tranny problems?
  99. Northstar Dyno Registry
  100. New Engine...climate control issues.
  101. Cryogenics
  102. My Photo Essay N* Head Gasket Repair Job
  103. Custom intake and nitrous
  104. 94 concours
  105. SLS Y-Code Engine: Do I need to replace the EGR Valve? PCM?
  106. service manual
  107. Possible Applications for Northstar?
  108. Need help....PLZ!!
  109. so i got a few PCM codes
  110. GM's Veiw on Fuel and Oil Additives
  111. How do I Reset the Change Oil Message?
  112. so when i went to pull codes, it just said all
  113. T061 T083
  114. 97 Deville No Longer Starts
  115. help on my 99' seville sls
  116. Starting issue
  117. 97 SLS Motor Swap to an 03. Is it possible?
  118. head
  119. 99 SLS and Straight DexCool rather than 50/50
  120. No 1st Gear!!!
  121. Cheap Northstar in NH, 35,000 miles
  122. Steering Wheel puff of smoke
  123. on the tranny subject
  124. Talk about luck!!
  125. New motor runs a lil hotter?
  126. o2 sensor question
  127. What is HOT for a blown head gasket
  128. Need Help Info On Where To Buy Rebuilt Engine
  129. compatable parts
  130. NorthStar swap wiring harness
  131. product question
  132. How long do you think caddy will keep the N*?
  133. SS Fuel Rail Removal
  134. Would this be a wise choice? [CAI] on a 184,000 mile northstar
  135. E85 on northstar ???
  136. just got my Plates
  137. 1996 Cadillac DeVille NO CODES ????
  138. Engine code - EOP
  139. Type of engine?
  140. Turbo Charged STS Cadillac
  141. Northstar Cam specs
  142. How can I drive 1000 miles with a coolant leak?
  143. To Rebuild or not.
  144. Do you use dealer for Northstar repairs?
  145. How long do Northstar engines last?
  146. 4.6 northstar fuel pressure?
  147. 150 miles in limp home mode
  148. CKP Question for One of the Techs
  149. Any problems trying 20W-50 in a '97?
  150. New 95' STS owner with tech question
  151. tune up ,whats involved?
  152. Oh shoot...need help ASAP...:(
  153. Radiator Cooling Fans not running
  154. Ram Air! (Maybe)
  155. Engine runs a bit rough during cold winter starts
  156. "break in" period for new Northstar engine
  157. How many miles to you get per tankfull with your north*?
  158. Inserts
  159. GM now offers Premium Remanufactured 4.6L Northstar
  160. 00 to 03 engine in a 98 or 99 Seville.
  161. recommended shop in Toronto/Kitchener area
  162. After head gasket repair engine knocks
  163. transaxel fluid change
  164. N* Injectors and Fuel Pressure Regulator
  165. transaxel filter
  166. 2002 plentum leak
  167. Sts Running Terrible
  168. 96 Cylinder head on 93 block
  169. My car has 121k on it..should I change the trany fluid?
  170. 96 to 99 Eldo, Deville, and 96, 97 Seville Tuning
  171. valve noise at startup
  172. Breaking in a N*
  173. Invisible leak (coolant)
  174. Another seafoam thread
  175. Is there an easy way to change coolant?
  176. what is considered normal coolant temperture for a north*?
  177. please identify mystery black box 01 DTS
  178. Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know
  179. Flushing Radiator
  180. Are there any worthwhile performance mods for the 98 north*?
  181. Was there more then one north* engine in 1998?
  182. Three (3) Codes on 1996 SLS: P1406, P0401, P0108
  183. Northstar Air Consumption.
  184. Eldo Gone....
  185. 4T80-E Transmission Fluid Change - DONE!
  186. P119 - Shorted Fuel Injector Problem
  187. How often do you WOT your north*?
  188. Before i go to beat the crap outta my car - WOT cleaning
  189. denso wires ???
  190. timeserts -so do these things prevent bad head gaskets
  191. Northstar 32 valve good for swap-out?
  192. '94 sts.. ignition coils, ignition control module?
  193. Car will not turn over....
  194. Has anyone ever got the P0741 code?
  195. Are there any good oil additives to add...
  196. I read a post about top tier gasoline....
  197. '95 Concours hard starting when it's cold outside
  198. my service engine soon light is on
  199. bad idea to use 87 octane?
  200. royal purple on a N*
  201. 03 n* and trans in a 99 SLS
  202. What gives the Northstar its "whirring" sound at idle?
  203. 96 sts starter problems, questions?
  204. How would i get a custom pcm?
  205. Beef up a 4.6L NStar?
  206. squeeky serpatine belt *new belt and tensioner*
  207. N* performance
  208. what year was it?
  209. opinions on high flow cats
  210. Gasoline Consumption question
  211. Looking for a Timesert Kit
  212. Engine Performance mods 95 STS
  213. Which oil i need for my 96 eldorado????
  214. How long should I let the N* warm up in the morning?
  215. Timesert Kits?
  216. 1997 SLS (overheating)
  217. Changing brakes on 96 SLS
  218. 2000 dts northstar reliabilty
  219. 2002 ETC Collector-mobile.
  220. What's the difference between the STS and SLS engines?
  221. Internal Mods For Northstar
  222. 99 to 00+ swap differences
  223. stuttering at idle
  224. 1999 Cadillac STS love/hate relationship...
  225. Free Northstar Engine
  226. Help the new guy make a good decision
  227. High Performance Head Gaskets?
  228. Parts ID
  229. Not run for 6 years, what would you do?
  230. 00 PCM on a 99 engine
  231. Blown Headgasket
  232. Aluminum Block porisity
  233. Its Alive
  234. oil life monitor problem
  235. P094 limp mode, no overdrive
  236. Valve Stem Seal Puller
  237. Homemade Valve Spring Compressor
  238. What Should I Pay For Eibachs?
  239. Trans Fluid/Filter change and Coolant drain/refill...
  240. Randomly Creeping High Idle Problem
  241. Stock spark plug wires, 7 or 8 mm?
  242. transmission oil looks dark :S
  243. how many cubic inches
  244. Northstar coil pack firing order
  245. '96 Sls: P1406: Egr
  246. GM Oil Consumption TSB, 2007
  247. Dexcool/Peak coolant
  248. noobie questions
  249. God a northstar sounds sexy, but does something sound odd
  250. Coolant leak...