: Northstar Engines and System Technical Discussion



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