: Northstar Engines and System Technical Discussion



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