: Northstar Engines and System Technical Discussion



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  1. Northstar Oil Leak
  2. 99 sts stalling out
  3. roller lifters or flat tappet
  4. po39 tcc vcc help
  5. 2000 Deville DTS Overheating
  6. Track Results and Video's
  7. big problems on 97 deville>please help me
  8. Compressor/ Air Ride Help
  9. Dealer Flush
  10. Overheating
  11. head gasket seeping oil
  12. No start (cranks OK)
  13. Advice on leak detection kits please
  14. Northstar dimensions
  15. AJ-Question
  16. New here need help
  17. help please
  18. Why didn't Cadillac make a larger displacement Northstar?
  19. Check Gas Cap Message.
  20. Changing the cams on an STS to the SLS Cams
  21. why wont my fans work?
  22. 99 STS, almost working
  23. Loud Engine Whine
  24. Over-sized Northstar Pistons
  25. overheating problem
  26. seville with shifting problems 1rst > 2nd
  27. msd coil?
  28. very hard start in the cold on N*
  29. L37 or LD8 ????
  30. Need a reliable source for Northstar Torque specs
  31. Northstar Rod Spec's & 3.6L
  32. symptoms of bolt failure/lifted heads
  33. 99 Deville Northstar Overheating -wanting non contradicting answers
  34. 2000 DeVille Overheating Update
  35. Bad Alternator?
  36. 1996 Deville Troubleshoot update
  37. Fuel pressure regulator?
  38. IAC Counts
  39. Thermagasket Does It Work???
  40. Missed one connection
  41. Those Damn HEAD GASKETS
  42. LC3 FWD Swap?
  43. ? For Ewill or AJ
  44. looking for pictures of northstar valvetrain
  45. So, here are the symptoms, whats wrong
  46. Northstar Valvetrain Clatter
  47. 200 DeVille Blows hot air at low speed turns cold
  48. Could it be the Water Pump Knocking
  49. Can anyone tell me whats wrong?
  50. Front Valvetrain Clacking
  51. labor cost to replace o2 sensor????
  52. Difference between VIN Y and VIN 9
  53. Got Code P1415 Please Help
  54. 2000 Deville with northstar
  55. 1034-loss of PCM data
  56. Obd I P046
  57. Computer/wiring problems
  58. Need help on 98 Seville/Northstar
  59. New HG Installed on a 99, Pings on Start Up?
  60. Got my 05 Deville back from Dealer!! and extra part for sale.
  61. Need help - going to see a 98 Seville STS on Sat, what do I check?
  62. Sick Tranny?
  63. Engine Help!!!
  64. 2nd annual midwest meet !
  65. 2001 Cadillac SLS LD8 Bore-increase
  66. White Smoke coming from front of car
  67. !996 Deville help troubleshoot
  68. I have a question about cold startswith N*??
  69. How do you disable the traction control perm without having to press the button in...
  70. 94 N* EGR valve ?? Engine stumbles.
  71. P0121, P0507 High Idle???
  72. 94 ETC no shift, wont idle
  73. Looking for '98 ETC mods
  74. What's your preference for plugs and wires ?
  75. intake manifold exploded/hole after backfire??
  76. 95 STS Cooling System Quirks
  77. MSD ignition
  78. Idea for vehicle to do Northstar swap on.
  79. NEED HELP - HAVE CODES P1416 and P0101
  80. quote???
  81. FPR replacement on 94 N*
  82. torker
  83. Sticking gas pedal????, high idle all of the sudden???? What do I check??? PLZ HELP!!
  84. Crankshaft & Cam sensors questions
  85. Why is my '96 Northstar now using oil?
  86. how to search forums..and cpk sensor question (2000 cadillac stalling)
  87. O2 Sensor Questions
  88. How can you tell if your HG's are shot?
  89. Rebuilt N*
  90. 97 STS vs. The drag strip
  91. 94 northstar starting problem
  92. Can i use synthetic oil in northstar?
  93. Getting Screwed
  94. Where is the main engine to body ground?
  95. white smoke n hp loss
  96. Is it me, or are alot of N*s having cracked blocks
  97. this is not an arguement thread for oil !
  98. 95 northstar tranny
  99. Is It Possible To???
  100. Engine stopped at the end of an exit ramp Any IDEAS WHY?
  101. Serpentine belt
  102. Need a VIN to a STS with the Z(W) option, I have the option but I don't like the Euro
  103. Removing EGR on a'96 SLS
  104. Whats the easy way to change the alternator on a Northstar? (99 Deville)
  105. Northstar shifting past redline
  106. 93/94 engines
  107. No Heat at Idle
  108. What's involved to drop the oil pan?
  109. Iradium spark plugs for 99deville? Better or worse? What the best plug & wires??
  110. Tell me about Force Motors/pressure control solenoids
  111. 99 Head Gasket Warranty?
  112. How can u save gas on a 99 deville?
  113. PC0327 - 96DeVille
  114. 1995 STS Cooling problems?
  115. Sts engine has this knocking sound
  116. Heater Core Leak/ Need Some Help, Please
  117. GM MAF sensor information and Discussion
  118. bottom end problems??
  119. Car runs hot but doesn't over heat
  120. Fuel Line Leak
  121. I have a cracked block, what next?
  122. RTV Silicone on Transmission Side Cover?
  123. hypothetically speaking
  124. 02 STS uses tons of oil
  125. Northstar Modifications
  126. 10w40 in N*
  127. 94 STS starts only if pressing gas, idles rough, dies after a couple minutes
  128. upgrading 94 concours
  129. '98 STS valve cover
  130. HELP- Dropped a bolt in the intake valley
  131. Intake manifold crack?
  132. Need Some Code Help 02 Seville
  133. Crankshaft position sensor
  134. engine compatibility
  135. 1994 DeVille Concourse
  136. misfire at idle
  137. Need help removing 99 STS northstar motor
  138. 1st time motor pull for HG on 99 N*, some questions
  139. 97 Etc N* Head Gasket Project
  140. Headgasket Leaks & Repairs
  141. check coolant light on???
  142. High idle/ IAC clicking?
  143. HELP!! Fuel Rail Recall Problems 1996 Seville
  144. Engine stutter/punch
  145. P0741 TCC Stuck ON, tried much, what next
  146. What is the Northstar suppose to sound like?
  147. 2003 Sts 0-70
  148. IAC valve
  149. strange rumble sound during hard acceleration.
  150. 2002 STC - Front Engine Mount Broken
  151. Mobil 1 5W30 meets GM spec 4718M but Mobil 1 10W30 DOES NOT. WHAT GIVES?
  152. Unbolting "beauty cover" on a 1999 Deville What GIVES
  153. Where is my IAT Sensor located? 99 sts
  154. 1997 Seville SLS
  155. Arizona Cadillac Owners Cheap Northstar Engine
  156. questions about PC0300 code on 96 deville
  157. Help with this code...97 Cadillac deville
  158. Drive vs 3 What's better???
  159. Cam numbers?
  160. What Spark Plugs for a 1999 DeVille Northstar?
  161. Using synthetic oil in a Northstar-Why does Cadillac recommend 10W30?
  162. Engine Oil Myths including ZDP by GM
  163. anyone ever use HEAL-A-SEAL
  164. Does vacuum sound from Surge Tank equal head gaskets?
  165. 94 Northstar Flexplate knocking noice. HELP!!
  166. 2003 DHS - Sluggish - EGR?
  167. Whirring/grinding That's Speed Sensitive
  168. 2002 deville/dhs engine trouble
  169. How can I clean the Mass Air Flow??
  170. Thanks for nothing, Northstar.
  171. P0147 - Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 3 - overheating
  172. Crank sensor tech 95 sts
  173. 1st gear WOT
  174. The End
  175. 99 STS Turbo charged video
  176. valve seals
  177. 1999 Seville Ignition DTC Help!
  178. Smoking Northstar?
  179. How long is your NS dipstick?
  180. weep holes
  181. engine swap for a 2001 dts
  182. P0741 - TCC System Stuck Off
  183. new Delco spark plug wires installed
  184. 1998 Deville overheating
  185. Help Having A Heart Attack! P039 / TRanny?
  186. N* programmer?
  187. Is it possible?
  188. Northstar Buick
  189. N* Runs Rough at Cold Start
  190. Bank 1 , 2 ??????
  191. Engine build
  192. P0300,p - Engine Misfire Detected 2002 deville, help please
  193. 2003 Deville with RWD
  194. Starter location
  195. Questions, Questions, and more Questions
  196. 93 sts traction disabled
  197. rental lincoln
  198. how to stay away from power loss
  199. 96 sts supercharger
  200. Are headgasket issues getting more common lately?
  201. 1998 Seville STS Chiptuning
  202. Tranny problems?
  203. Northstar Dyno Registry
  204. New Engine...climate control issues.
  205. Cryogenics
  206. My Photo Essay N* Head Gasket Repair Job
  207. Custom intake and nitrous
  208. 94 concours
  209. SLS Y-Code Engine: Do I need to replace the EGR Valve? PCM?
  210. service manual
  211. Possible Applications for Northstar?
  212. Need help....PLZ!!
  213. so i got a few PCM codes
  214. GM's Veiw on Fuel and Oil Additives
  215. How do I Reset the Change Oil Message?
  216. so when i went to pull codes, it just said all
  217. T061 T083
  218. 97 Deville No Longer Starts
  219. help on my 99' seville sls
  220. Starting issue
  221. 97 SLS Motor Swap to an 03. Is it possible?
  222. head
  223. 99 SLS and Straight DexCool rather than 50/50
  224. No 1st Gear!!!
  225. Cheap Northstar in NH, 35,000 miles
  226. Steering Wheel puff of smoke
  227. on the tranny subject
  228. Talk about luck!!
  229. New motor runs a lil hotter?
  230. o2 sensor question
  231. What is HOT for a blown head gasket
  232. Need Help Info On Where To Buy Rebuilt Engine
  233. compatable parts
  234. NorthStar swap wiring harness
  235. product question
  236. How long do you think caddy will keep the N*?
  237. SS Fuel Rail Removal
  238. Would this be a wise choice? [CAI] on a 184,000 mile northstar
  239. E85 on northstar ???
  240. just got my Plates
  241. 1996 Cadillac DeVille NO CODES ????
  242. Engine code - EOP
  243. Type of engine?
  244. Turbo Charged STS Cadillac
  245. Northstar Cam specs
  246. How can I drive 1000 miles with a coolant leak?
  247. To Rebuild or not.
  248. Do you use dealer for Northstar repairs?
  249. How long do Northstar engines last?
  250. 4.6 northstar fuel pressure?