: Northstar Engines and System Technical Discussion



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  1. New HG Installed on a 99, Pings on Start Up?
  2. Got my 05 Deville back from Dealer!! and extra part for sale.
  3. Need help - going to see a 98 Seville STS on Sat, what do I check?
  4. Sick Tranny?
  5. Engine Help!!!
  6. 2nd annual midwest meet !
  7. 2001 Cadillac SLS LD8 Bore-increase
  8. White Smoke coming from front of car
  9. !996 Deville help troubleshoot
  10. I have a question about cold startswith N*??
  11. How do you disable the traction control perm without having to press the button in...
  12. 94 N* EGR valve ?? Engine stumbles.
  13. P0121, P0507 High Idle???
  14. 94 ETC no shift, wont idle
  15. Looking for '98 ETC mods
  16. What's your preference for plugs and wires ?
  17. intake manifold exploded/hole after backfire??
  18. 95 STS Cooling System Quirks
  19. MSD ignition
  20. Idea for vehicle to do Northstar swap on.
  21. NEED HELP - HAVE CODES P1416 and P0101
  22. quote???
  23. FPR replacement on 94 N*
  24. torker
  25. Sticking gas pedal????, high idle all of the sudden???? What do I check??? PLZ HELP!!
  26. Crankshaft & Cam sensors questions
  27. Why is my '96 Northstar now using oil?
  28. how to search forums..and cpk sensor question (2000 cadillac stalling)
  29. O2 Sensor Questions
  30. How can you tell if your HG's are shot?
  31. Rebuilt N*
  32. 97 STS vs. The drag strip
  33. 94 northstar starting problem
  34. Can i use synthetic oil in northstar?
  35. Getting Screwed
  36. Where is the main engine to body ground?
  37. white smoke n hp loss
  38. Is it me, or are alot of N*s having cracked blocks
  39. this is not an arguement thread for oil !
  40. 95 northstar tranny
  41. Is It Possible To???
  42. Engine stopped at the end of an exit ramp Any IDEAS WHY?
  43. Serpentine belt
  44. Need a VIN to a STS with the Z(W) option, I have the option but I don't like the Euro
  45. Removing EGR on a'96 SLS
  46. Whats the easy way to change the alternator on a Northstar? (99 Deville)
  47. Northstar shifting past redline
  48. 93/94 engines
  49. No Heat at Idle
  50. What's involved to drop the oil pan?
  51. Iradium spark plugs for 99deville? Better or worse? What the best plug & wires??
  52. Tell me about Force Motors/pressure control solenoids
  53. 99 Head Gasket Warranty?
  54. How can u save gas on a 99 deville?
  55. PC0327 - 96DeVille
  56. 1995 STS Cooling problems?
  57. Sts engine has this knocking sound
  58. Heater Core Leak/ Need Some Help, Please
  59. GM MAF sensor information and Discussion
  60. bottom end problems??
  61. Car runs hot but doesn't over heat
  62. Fuel Line Leak
  63. I have a cracked block, what next?
  64. RTV Silicone on Transmission Side Cover?
  65. hypothetically speaking
  66. 02 STS uses tons of oil
  67. Northstar Modifications
  68. 10w40 in N*
  69. 94 STS starts only if pressing gas, idles rough, dies after a couple minutes
  70. upgrading 94 concours
  71. '98 STS valve cover
  72. HELP- Dropped a bolt in the intake valley
  73. Intake manifold crack?
  74. Need Some Code Help 02 Seville
  75. Crankshaft position sensor
  76. engine compatibility
  77. 1994 DeVille Concourse
  78. misfire at idle
  79. Need help removing 99 STS northstar motor
  80. 1st time motor pull for HG on 99 N*, some questions
  81. 97 Etc N* Head Gasket Project
  82. Headgasket Leaks & Repairs
  83. check coolant light on???
  84. High idle/ IAC clicking?
  85. HELP!! Fuel Rail Recall Problems 1996 Seville
  86. Engine stutter/punch
  87. P0741 TCC Stuck ON, tried much, what next
  88. What is the Northstar suppose to sound like?
  89. 2003 Sts 0-70
  90. IAC valve
  91. strange rumble sound during hard acceleration.
  92. 2002 STC - Front Engine Mount Broken
  93. Mobil 1 5W30 meets GM spec 4718M but Mobil 1 10W30 DOES NOT. WHAT GIVES?
  94. Unbolting "beauty cover" on a 1999 Deville What GIVES
  95. Where is my IAT Sensor located? 99 sts
  96. 1997 Seville SLS
  97. Arizona Cadillac Owners Cheap Northstar Engine
  98. questions about PC0300 code on 96 deville
  99. Help with this code...97 Cadillac deville
  100. Drive vs 3 What's better???
  101. Cam numbers?
  102. What Spark Plugs for a 1999 DeVille Northstar?
  103. Using synthetic oil in a Northstar-Why does Cadillac recommend 10W30?
  104. Engine Oil Myths including ZDP by GM
  105. anyone ever use HEAL-A-SEAL
  106. Does vacuum sound from Surge Tank equal head gaskets?
  107. 94 Northstar Flexplate knocking noice. HELP!!
  108. 2003 DHS - Sluggish - EGR?
  109. Whirring/grinding That's Speed Sensitive
  110. 2002 deville/dhs engine trouble
  111. How can I clean the Mass Air Flow??
  112. Thanks for nothing, Northstar.
  113. P0147 - Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 3 - overheating
  114. Crank sensor tech 95 sts
  115. 1st gear WOT
  116. The End
  117. 99 STS Turbo charged video
  118. valve seals
  119. 1999 Seville Ignition DTC Help!
  120. Smoking Northstar?
  121. How long is your NS dipstick?
  122. weep holes
  123. engine swap for a 2001 dts
  124. P0741 - TCC System Stuck Off
  125. new Delco spark plug wires installed
  126. 1998 Deville overheating
  127. Help Having A Heart Attack! P039 / TRanny?
  128. N* programmer?
  129. Is it possible?
  130. Northstar Buick
  131. N* Runs Rough at Cold Start
  132. Bank 1 , 2 ??????
  133. Engine build
  134. P0300,p - Engine Misfire Detected 2002 deville, help please
  135. 2003 Deville with RWD
  136. Starter location
  137. Questions, Questions, and more Questions
  138. 93 sts traction disabled
  139. rental lincoln
  140. how to stay away from power loss
  141. 96 sts supercharger
  142. Are headgasket issues getting more common lately?
  143. 1998 Seville STS Chiptuning
  144. Tranny problems?
  145. Northstar Dyno Registry
  146. New Engine...climate control issues.
  147. Cryogenics
  148. My Photo Essay N* Head Gasket Repair Job
  149. Custom intake and nitrous
  150. 94 concours
  151. SLS Y-Code Engine: Do I need to replace the EGR Valve? PCM?
  152. service manual
  153. Possible Applications for Northstar?
  154. Need help....PLZ!!
  155. so i got a few PCM codes
  156. GM's Veiw on Fuel and Oil Additives
  157. How do I Reset the Change Oil Message?
  158. so when i went to pull codes, it just said all
  159. T061 T083
  160. 97 Deville No Longer Starts
  161. help on my 99' seville sls
  162. Starting issue
  163. 97 SLS Motor Swap to an 03. Is it possible?
  164. head
  165. 99 SLS and Straight DexCool rather than 50/50
  166. No 1st Gear!!!
  167. Cheap Northstar in NH, 35,000 miles
  168. Steering Wheel puff of smoke
  169. on the tranny subject
  170. Talk about luck!!
  171. New motor runs a lil hotter?
  172. o2 sensor question
  173. What is HOT for a blown head gasket
  174. Need Help Info On Where To Buy Rebuilt Engine
  175. compatable parts
  176. NorthStar swap wiring harness
  177. product question
  178. How long do you think caddy will keep the N*?
  179. SS Fuel Rail Removal
  180. Would this be a wise choice? [CAI] on a 184,000 mile northstar
  181. E85 on northstar ???
  182. just got my Plates
  183. 1996 Cadillac DeVille NO CODES ????
  184. Engine code - EOP
  185. Type of engine?
  186. Turbo Charged STS Cadillac
  187. Northstar Cam specs
  188. How can I drive 1000 miles with a coolant leak?
  189. To Rebuild or not.
  190. Do you use dealer for Northstar repairs?
  191. How long do Northstar engines last?
  192. 4.6 northstar fuel pressure?
  193. 150 miles in limp home mode
  194. CKP Question for One of the Techs
  195. Any problems trying 20W-50 in a '97?
  196. New 95' STS owner with tech question
  197. tune up ,whats involved?
  198. Oh shoot...need help ASAP...:(
  199. Radiator Cooling Fans not running
  200. Ram Air! (Maybe)
  201. Engine runs a bit rough during cold winter starts
  202. "break in" period for new Northstar engine
  203. How many miles to you get per tankfull with your north*?
  204. Inserts
  205. GM now offers Premium Remanufactured 4.6L Northstar
  206. 00 to 03 engine in a 98 or 99 Seville.
  207. recommended shop in Toronto/Kitchener area
  208. After head gasket repair engine knocks
  209. transaxel fluid change
  210. N* Injectors and Fuel Pressure Regulator
  211. transaxel filter
  212. 2002 plentum leak
  213. Sts Running Terrible
  214. 96 Cylinder head on 93 block
  215. My car has 121k on it..should I change the trany fluid?
  216. 96 to 99 Eldo, Deville, and 96, 97 Seville Tuning
  217. valve noise at startup
  218. Breaking in a N*
  219. Invisible leak (coolant)
  220. Another seafoam thread
  221. Is there an easy way to change coolant?
  222. what is considered normal coolant temperture for a north*?
  223. please identify mystery black box 01 DTS
  224. Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know
  225. Flushing Radiator
  226. Are there any worthwhile performance mods for the 98 north*?
  227. Was there more then one north* engine in 1998?
  228. Three (3) Codes on 1996 SLS: P1406, P0401, P0108
  229. Northstar Air Consumption.
  230. Eldo Gone....
  231. 4T80-E Transmission Fluid Change - DONE!
  232. P119 - Shorted Fuel Injector Problem
  233. How often do you WOT your north*?
  234. Before i go to beat the crap outta my car - WOT cleaning
  235. denso wires ???
  236. timeserts -so do these things prevent bad head gaskets
  237. Northstar 32 valve good for swap-out?
  238. '94 sts.. ignition coils, ignition control module?
  239. Car will not turn over....
  240. Has anyone ever got the P0741 code?
  241. Are there any good oil additives to add...
  242. I read a post about top tier gasoline....
  243. '95 Concours hard starting when it's cold outside
  244. my service engine soon light is on
  245. bad idea to use 87 octane?
  246. royal purple on a N*
  247. 03 n* and trans in a 99 SLS
  248. What gives the Northstar its "whirring" sound at idle?
  249. 96 sts starter problems, questions?
  250. How would i get a custom pcm?