: Northstar Engines and System Technical Discussion



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  1. looking for pictures of northstar valvetrain
  2. So, here are the symptoms, whats wrong
  3. Northstar Valvetrain Clatter
  4. 200 DeVille Blows hot air at low speed turns cold
  5. Could it be the Water Pump Knocking
  6. Can anyone tell me whats wrong?
  7. Front Valvetrain Clacking
  8. labor cost to replace o2 sensor????
  9. Difference between VIN Y and VIN 9
  10. Got Code P1415 Please Help
  11. 2000 Deville with northstar
  12. 1034-loss of PCM data
  13. Obd I P046
  14. Computer/wiring problems
  15. Need help on 98 Seville/Northstar
  16. New HG Installed on a 99, Pings on Start Up?
  17. Got my 05 Deville back from Dealer!! and extra part for sale.
  18. Need help - going to see a 98 Seville STS on Sat, what do I check?
  19. Sick Tranny?
  20. Engine Help!!!
  21. 2nd annual midwest meet !
  22. 2001 Cadillac SLS LD8 Bore-increase
  23. White Smoke coming from front of car
  24. !996 Deville help troubleshoot
  25. I have a question about cold startswith N*??
  26. How do you disable the traction control perm without having to press the button in...
  27. 94 N* EGR valve ?? Engine stumbles.
  28. P0121, P0507 High Idle???
  29. 94 ETC no shift, wont idle
  30. Looking for '98 ETC mods
  31. What's your preference for plugs and wires ?
  32. intake manifold exploded/hole after backfire??
  33. 95 STS Cooling System Quirks
  34. MSD ignition
  35. Idea for vehicle to do Northstar swap on.
  36. NEED HELP - HAVE CODES P1416 and P0101
  37. quote???
  38. FPR replacement on 94 N*
  39. torker
  40. Sticking gas pedal????, high idle all of the sudden???? What do I check??? PLZ HELP!!
  41. Crankshaft & Cam sensors questions
  42. Why is my '96 Northstar now using oil?
  43. how to search forums..and cpk sensor question (2000 cadillac stalling)
  44. O2 Sensor Questions
  45. How can you tell if your HG's are shot?
  46. Rebuilt N*
  47. 97 STS vs. The drag strip
  48. 94 northstar starting problem
  49. Can i use synthetic oil in northstar?
  50. Getting Screwed
  51. Where is the main engine to body ground?
  52. white smoke n hp loss
  53. Is it me, or are alot of N*s having cracked blocks
  54. this is not an arguement thread for oil !
  55. 95 northstar tranny
  56. Is It Possible To???
  57. Engine stopped at the end of an exit ramp Any IDEAS WHY?
  58. Serpentine belt
  59. Need a VIN to a STS with the Z(W) option, I have the option but I don't like the Euro
  60. Removing EGR on a'96 SLS
  61. Whats the easy way to change the alternator on a Northstar? (99 Deville)
  62. Northstar shifting past redline
  63. 93/94 engines
  64. No Heat at Idle
  65. What's involved to drop the oil pan?
  66. Iradium spark plugs for 99deville? Better or worse? What the best plug & wires??
  67. Tell me about Force Motors/pressure control solenoids
  68. 99 Head Gasket Warranty?
  69. How can u save gas on a 99 deville?
  70. PC0327 - 96DeVille
  71. 1995 STS Cooling problems?
  72. Sts engine has this knocking sound
  73. Heater Core Leak/ Need Some Help, Please
  74. GM MAF sensor information and Discussion
  75. bottom end problems??
  76. Car runs hot but doesn't over heat
  77. Fuel Line Leak
  78. I have a cracked block, what next?
  79. RTV Silicone on Transmission Side Cover?
  80. hypothetically speaking
  81. 02 STS uses tons of oil
  82. Northstar Modifications
  83. 10w40 in N*
  84. 94 STS starts only if pressing gas, idles rough, dies after a couple minutes
  85. upgrading 94 concours
  86. '98 STS valve cover
  87. HELP- Dropped a bolt in the intake valley
  88. Intake manifold crack?
  89. Need Some Code Help 02 Seville
  90. Crankshaft position sensor
  91. engine compatibility
  92. 1994 DeVille Concourse
  93. misfire at idle
  94. Need help removing 99 STS northstar motor
  95. 1st time motor pull for HG on 99 N*, some questions
  96. 97 Etc N* Head Gasket Project
  97. Headgasket Leaks & Repairs
  98. check coolant light on???
  99. High idle/ IAC clicking?
  100. HELP!! Fuel Rail Recall Problems 1996 Seville
  101. Engine stutter/punch
  102. P0741 TCC Stuck ON, tried much, what next
  103. What is the Northstar suppose to sound like?
  104. 2003 Sts 0-70
  105. IAC valve
  106. strange rumble sound during hard acceleration.
  107. 2002 STC - Front Engine Mount Broken
  108. Mobil 1 5W30 meets GM spec 4718M but Mobil 1 10W30 DOES NOT. WHAT GIVES?
  109. Unbolting "beauty cover" on a 1999 Deville What GIVES
  110. Where is my IAT Sensor located? 99 sts
  111. 1997 Seville SLS
  112. Arizona Cadillac Owners Cheap Northstar Engine
  113. questions about PC0300 code on 96 deville
  114. Help with this code...97 Cadillac deville
  115. Drive vs 3 What's better???
  116. Cam numbers?
  117. What Spark Plugs for a 1999 DeVille Northstar?
  118. Using synthetic oil in a Northstar-Why does Cadillac recommend 10W30?
  119. Engine Oil Myths including ZDP by GM
  120. anyone ever use HEAL-A-SEAL
  121. Does vacuum sound from Surge Tank equal head gaskets?
  122. 94 Northstar Flexplate knocking noice. HELP!!
  123. 2003 DHS - Sluggish - EGR?
  124. Whirring/grinding That's Speed Sensitive
  125. 2002 deville/dhs engine trouble
  126. How can I clean the Mass Air Flow??
  127. Thanks for nothing, Northstar.
  128. P0147 - Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 3 - overheating
  129. Crank sensor tech 95 sts
  130. 1st gear WOT
  131. The End
  132. 99 STS Turbo charged video
  133. valve seals
  134. 1999 Seville Ignition DTC Help!
  135. Smoking Northstar?
  136. How long is your NS dipstick?
  137. weep holes
  138. engine swap for a 2001 dts
  139. P0741 - TCC System Stuck Off
  140. new Delco spark plug wires installed
  141. 1998 Deville overheating
  142. Help Having A Heart Attack! P039 / TRanny?
  143. N* programmer?
  144. Is it possible?
  145. Northstar Buick
  146. N* Runs Rough at Cold Start
  147. Bank 1 , 2 ??????
  148. Engine build
  149. P0300,p - Engine Misfire Detected 2002 deville, help please
  150. 2003 Deville with RWD
  151. Starter location
  152. Questions, Questions, and more Questions
  153. 93 sts traction disabled
  154. rental lincoln
  155. how to stay away from power loss
  156. 96 sts supercharger
  157. Are headgasket issues getting more common lately?
  158. 1998 Seville STS Chiptuning
  159. Tranny problems?
  160. Northstar Dyno Registry
  161. New Engine...climate control issues.
  162. Cryogenics
  163. My Photo Essay N* Head Gasket Repair Job
  164. Custom intake and nitrous
  165. 94 concours
  166. SLS Y-Code Engine: Do I need to replace the EGR Valve? PCM?
  167. service manual
  168. Possible Applications for Northstar?
  169. Need help....PLZ!!
  170. so i got a few PCM codes
  171. GM's Veiw on Fuel and Oil Additives
  172. How do I Reset the Change Oil Message?
  173. so when i went to pull codes, it just said all
  174. T061 T083
  175. 97 Deville No Longer Starts
  176. help on my 99' seville sls
  177. Starting issue
  178. 97 SLS Motor Swap to an 03. Is it possible?
  179. head
  180. 99 SLS and Straight DexCool rather than 50/50
  181. No 1st Gear!!!
  182. Cheap Northstar in NH, 35,000 miles
  183. Steering Wheel puff of smoke
  184. on the tranny subject
  185. Talk about luck!!
  186. New motor runs a lil hotter?
  187. o2 sensor question
  188. What is HOT for a blown head gasket
  189. Need Help Info On Where To Buy Rebuilt Engine
  190. compatable parts
  191. NorthStar swap wiring harness
  192. product question
  193. How long do you think caddy will keep the N*?
  194. SS Fuel Rail Removal
  195. Would this be a wise choice? [CAI] on a 184,000 mile northstar
  196. E85 on northstar ???
  197. just got my Plates
  198. 1996 Cadillac DeVille NO CODES ????
  199. Engine code - EOP
  200. Type of engine?
  201. Turbo Charged STS Cadillac
  202. Northstar Cam specs
  203. How can I drive 1000 miles with a coolant leak?
  204. To Rebuild or not.
  205. Do you use dealer for Northstar repairs?
  206. How long do Northstar engines last?
  207. 4.6 northstar fuel pressure?
  208. 150 miles in limp home mode
  209. CKP Question for One of the Techs
  210. Any problems trying 20W-50 in a '97?
  211. New 95' STS owner with tech question
  212. tune up ,whats involved?
  213. Oh shoot...need help ASAP...:(
  214. Radiator Cooling Fans not running
  215. Ram Air! (Maybe)
  216. Engine runs a bit rough during cold winter starts
  217. "break in" period for new Northstar engine
  218. How many miles to you get per tankfull with your north*?
  219. Inserts
  220. GM now offers Premium Remanufactured 4.6L Northstar
  221. 00 to 03 engine in a 98 or 99 Seville.
  222. recommended shop in Toronto/Kitchener area
  223. After head gasket repair engine knocks
  224. transaxel fluid change
  225. N* Injectors and Fuel Pressure Regulator
  226. transaxel filter
  227. 2002 plentum leak
  228. Sts Running Terrible
  229. 96 Cylinder head on 93 block
  230. My car has 121k on it..should I change the trany fluid?
  231. 96 to 99 Eldo, Deville, and 96, 97 Seville Tuning
  232. valve noise at startup
  233. Breaking in a N*
  234. Invisible leak (coolant)
  235. Another seafoam thread
  236. Is there an easy way to change coolant?
  237. what is considered normal coolant temperture for a north*?
  238. please identify mystery black box 01 DTS
  239. Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know
  240. Flushing Radiator
  241. Are there any worthwhile performance mods for the 98 north*?
  242. Was there more then one north* engine in 1998?
  243. Three (3) Codes on 1996 SLS: P1406, P0401, P0108
  244. Northstar Air Consumption.
  245. Eldo Gone....
  246. 4T80-E Transmission Fluid Change - DONE!
  247. P119 - Shorted Fuel Injector Problem
  248. How often do you WOT your north*?
  249. Before i go to beat the crap outta my car - WOT cleaning
  250. denso wires ???