: Northstar Engines and System Technical Discussion



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