: Northstar Engines and System Technical Discussion



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  1. L37 or LD8 ????
  2. Need a reliable source for Northstar Torque specs
  3. Northstar Rod Spec's & 3.6L
  4. symptoms of bolt failure/lifted heads
  5. 99 Deville Northstar Overheating -wanting non contradicting answers
  6. 2000 DeVille Overheating Update
  7. Bad Alternator?
  8. 1996 Deville Troubleshoot update
  9. Fuel pressure regulator?
  10. IAC Counts
  11. Thermagasket Does It Work???
  12. Missed one connection
  13. Those Damn HEAD GASKETS
  14. LC3 FWD Swap?
  15. ? For Ewill or AJ
  16. looking for pictures of northstar valvetrain
  17. So, here are the symptoms, whats wrong
  18. Northstar Valvetrain Clatter
  19. 200 DeVille Blows hot air at low speed turns cold
  20. Could it be the Water Pump Knocking
  21. Can anyone tell me whats wrong?
  22. Front Valvetrain Clacking
  23. labor cost to replace o2 sensor????
  24. Difference between VIN Y and VIN 9
  25. Got Code P1415 Please Help
  26. 2000 Deville with northstar
  27. 1034-loss of PCM data
  28. Obd I P046
  29. Computer/wiring problems
  30. Need help on 98 Seville/Northstar
  31. New HG Installed on a 99, Pings on Start Up?
  32. Got my 05 Deville back from Dealer!! and extra part for sale.
  33. Need help - going to see a 98 Seville STS on Sat, what do I check?
  34. Sick Tranny?
  35. Engine Help!!!
  36. 2nd annual midwest meet !
  37. 2001 Cadillac SLS LD8 Bore-increase
  38. White Smoke coming from front of car
  39. !996 Deville help troubleshoot
  40. I have a question about cold startswith N*??
  41. How do you disable the traction control perm without having to press the button in...
  42. 94 N* EGR valve ?? Engine stumbles.
  43. P0121, P0507 High Idle???
  44. 94 ETC no shift, wont idle
  45. Looking for '98 ETC mods
  46. What's your preference for plugs and wires ?
  47. intake manifold exploded/hole after backfire??
  48. 95 STS Cooling System Quirks
  49. MSD ignition
  50. Idea for vehicle to do Northstar swap on.
  51. NEED HELP - HAVE CODES P1416 and P0101
  52. quote???
  53. FPR replacement on 94 N*
  54. torker
  55. Sticking gas pedal????, high idle all of the sudden???? What do I check??? PLZ HELP!!
  56. Crankshaft & Cam sensors questions
  57. Why is my '96 Northstar now using oil?
  58. how to search forums..and cpk sensor question (2000 cadillac stalling)
  59. O2 Sensor Questions
  60. How can you tell if your HG's are shot?
  61. Rebuilt N*
  62. 97 STS vs. The drag strip
  63. 94 northstar starting problem
  64. Can i use synthetic oil in northstar?
  65. Getting Screwed
  66. Where is the main engine to body ground?
  67. white smoke n hp loss
  68. Is it me, or are alot of N*s having cracked blocks
  69. this is not an arguement thread for oil !
  70. 95 northstar tranny
  71. Is It Possible To???
  72. Engine stopped at the end of an exit ramp Any IDEAS WHY?
  73. Serpentine belt
  74. Need a VIN to a STS with the Z(W) option, I have the option but I don't like the Euro
  75. Removing EGR on a'96 SLS
  76. Whats the easy way to change the alternator on a Northstar? (99 Deville)
  77. Northstar shifting past redline
  78. 93/94 engines
  79. No Heat at Idle
  80. What's involved to drop the oil pan?
  81. Iradium spark plugs for 99deville? Better or worse? What the best plug & wires??
  82. Tell me about Force Motors/pressure control solenoids
  83. 99 Head Gasket Warranty?
  84. How can u save gas on a 99 deville?
  85. PC0327 - 96DeVille
  86. 1995 STS Cooling problems?
  87. Sts engine has this knocking sound
  88. Heater Core Leak/ Need Some Help, Please
  89. GM MAF sensor information and Discussion
  90. bottom end problems??
  91. Car runs hot but doesn't over heat
  92. Fuel Line Leak
  93. I have a cracked block, what next?
  94. RTV Silicone on Transmission Side Cover?
  95. hypothetically speaking
  96. 02 STS uses tons of oil
  97. Northstar Modifications
  98. 10w40 in N*
  99. 94 STS starts only if pressing gas, idles rough, dies after a couple minutes
  100. upgrading 94 concours
  101. '98 STS valve cover
  102. HELP- Dropped a bolt in the intake valley
  103. Intake manifold crack?
  104. Need Some Code Help 02 Seville
  105. Crankshaft position sensor
  106. engine compatibility
  107. 1994 DeVille Concourse
  108. misfire at idle
  109. Need help removing 99 STS northstar motor
  110. 1st time motor pull for HG on 99 N*, some questions
  111. 97 Etc N* Head Gasket Project
  112. Headgasket Leaks & Repairs
  113. check coolant light on???
  114. High idle/ IAC clicking?
  115. HELP!! Fuel Rail Recall Problems 1996 Seville
  116. Engine stutter/punch
  117. P0741 TCC Stuck ON, tried much, what next
  118. What is the Northstar suppose to sound like?
  119. 2003 Sts 0-70
  120. IAC valve
  121. strange rumble sound during hard acceleration.
  122. 2002 STC - Front Engine Mount Broken
  123. Mobil 1 5W30 meets GM spec 4718M but Mobil 1 10W30 DOES NOT. WHAT GIVES?
  124. Unbolting "beauty cover" on a 1999 Deville What GIVES
  125. Where is my IAT Sensor located? 99 sts
  126. 1997 Seville SLS
  127. Arizona Cadillac Owners Cheap Northstar Engine
  128. questions about PC0300 code on 96 deville
  129. Help with this code...97 Cadillac deville
  130. Drive vs 3 What's better???
  131. Cam numbers?
  132. What Spark Plugs for a 1999 DeVille Northstar?
  133. Using synthetic oil in a Northstar-Why does Cadillac recommend 10W30?
  134. Engine Oil Myths including ZDP by GM
  135. anyone ever use HEAL-A-SEAL
  136. Does vacuum sound from Surge Tank equal head gaskets?
  137. 94 Northstar Flexplate knocking noice. HELP!!
  138. 2003 DHS - Sluggish - EGR?
  139. Whirring/grinding That's Speed Sensitive
  140. 2002 deville/dhs engine trouble
  141. How can I clean the Mass Air Flow??
  142. Thanks for nothing, Northstar.
  143. P0147 - Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 3 - overheating
  144. Crank sensor tech 95 sts
  145. 1st gear WOT
  146. The End
  147. 99 STS Turbo charged video
  148. valve seals
  149. 1999 Seville Ignition DTC Help!
  150. Smoking Northstar?
  151. How long is your NS dipstick?
  152. weep holes
  153. engine swap for a 2001 dts
  154. P0741 - TCC System Stuck Off
  155. new Delco spark plug wires installed
  156. 1998 Deville overheating
  157. Help Having A Heart Attack! P039 / TRanny?
  158. N* programmer?
  159. Is it possible?
  160. Northstar Buick
  161. N* Runs Rough at Cold Start
  162. Bank 1 , 2 ??????
  163. Engine build
  164. P0300,p - Engine Misfire Detected 2002 deville, help please
  165. 2003 Deville with RWD
  166. Starter location
  167. Questions, Questions, and more Questions
  168. 93 sts traction disabled
  169. rental lincoln
  170. how to stay away from power loss
  171. 96 sts supercharger
  172. Are headgasket issues getting more common lately?
  173. 1998 Seville STS Chiptuning
  174. Tranny problems?
  175. Northstar Dyno Registry
  176. New Engine...climate control issues.
  177. Cryogenics
  178. My Photo Essay N* Head Gasket Repair Job
  179. Custom intake and nitrous
  180. 94 concours
  181. SLS Y-Code Engine: Do I need to replace the EGR Valve? PCM?
  182. service manual
  183. Possible Applications for Northstar?
  184. Need help....PLZ!!
  185. so i got a few PCM codes
  186. GM's Veiw on Fuel and Oil Additives
  187. How do I Reset the Change Oil Message?
  188. so when i went to pull codes, it just said all
  189. T061 T083
  190. 97 Deville No Longer Starts
  191. help on my 99' seville sls
  192. Starting issue
  193. 97 SLS Motor Swap to an 03. Is it possible?
  194. head
  195. 99 SLS and Straight DexCool rather than 50/50
  196. No 1st Gear!!!
  197. Cheap Northstar in NH, 35,000 miles
  198. Steering Wheel puff of smoke
  199. on the tranny subject
  200. Talk about luck!!
  201. New motor runs a lil hotter?
  202. o2 sensor question
  203. What is HOT for a blown head gasket
  204. Need Help Info On Where To Buy Rebuilt Engine
  205. compatable parts
  206. NorthStar swap wiring harness
  207. product question
  208. How long do you think caddy will keep the N*?
  209. SS Fuel Rail Removal
  210. Would this be a wise choice? [CAI] on a 184,000 mile northstar
  211. E85 on northstar ???
  212. just got my Plates
  213. 1996 Cadillac DeVille NO CODES ????
  214. Engine code - EOP
  215. Type of engine?
  216. Turbo Charged STS Cadillac
  217. Northstar Cam specs
  218. How can I drive 1000 miles with a coolant leak?
  219. To Rebuild or not.
  220. Do you use dealer for Northstar repairs?
  221. How long do Northstar engines last?
  222. 4.6 northstar fuel pressure?
  223. 150 miles in limp home mode
  224. CKP Question for One of the Techs
  225. Any problems trying 20W-50 in a '97?
  226. New 95' STS owner with tech question
  227. tune up ,whats involved?
  228. Oh shoot...need help ASAP...:(
  229. Radiator Cooling Fans not running
  230. Ram Air! (Maybe)
  231. Engine runs a bit rough during cold winter starts
  232. "break in" period for new Northstar engine
  233. How many miles to you get per tankfull with your north*?
  234. Inserts
  235. GM now offers Premium Remanufactured 4.6L Northstar
  236. 00 to 03 engine in a 98 or 99 Seville.
  237. recommended shop in Toronto/Kitchener area
  238. After head gasket repair engine knocks
  239. transaxel fluid change
  240. N* Injectors and Fuel Pressure Regulator
  241. transaxel filter
  242. 2002 plentum leak
  243. Sts Running Terrible
  244. 96 Cylinder head on 93 block
  245. My car has 121k on it..should I change the trany fluid?
  246. 96 to 99 Eldo, Deville, and 96, 97 Seville Tuning
  247. valve noise at startup
  248. Breaking in a N*
  249. Invisible leak (coolant)
  250. Another seafoam thread