: Northstar Engines and System Technical Discussion



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  1. OBD II Manual
  2. 2002 sts engine codes
  3. Noise on Startup when Cold
  4. question about trans gasket
  5. 98 Eldo Rebuilt Motor
  6. Pulling camshaft cover - can it be done w/out dropping engine?
  7. Thermostat
  8. 97 Deville w/ N* Battery(?) problems
  9. head gasket blown replacing motor
  10. AGAP Northstar reman engine NIGHTMARE
  11. Oil leak 2000 Deville
  12. 96 Eldorado ABS and Traction Control TRBL
  13. intermittent Bubbling noise in dashboard.. Any ideas?
  14. gasket questions on the northstar
  15. engine swap
  16. LD8 Engine issue (2005 Bonneville GXP)
  17. Custom made 8.5mm MSD spark plug wires
  18. oilpan/trans pan gasket...
  19. water pump tension pulley
  20. possible 1/2 case oil leak.....
  21. Northstar Oil Pan Help Needed
  22. Removing the N* from an el do?
  23. Problems with 02 DHS, need more opinions
  24. Can you name this Car?
  25. Two 4.6 Northstar Motors What are they Worth?
  26. How hot can you go?
  27. Throttle Position Sensor 94 N* - how to replace?
  28. Questions about low-mile oft-stored '02 Eldorado
  29. P0741 & P1860
  30. 96 deville egr valve cleaning
  31. Hey, all you guys, check radiator hoses
  32. Anyone who can read motor serials get in here (calling AJ)
  33. Pinging above 3000RPM with 93 octane
  34. Northstar mechanic
  35. now mine STS too Broken HG :(
  36. Cam Question For AJ or Ewill
  37. 2000-2005 Headgasket...
  38. Northstar Oil Leak
  39. 99 sts stalling out
  40. roller lifters or flat tappet
  41. po39 tcc vcc help
  42. 2000 Deville DTS Overheating
  43. Track Results and Video's
  44. big problems on 97 deville>please help me
  45. Compressor/ Air Ride Help
  46. Dealer Flush
  47. Overheating
  48. head gasket seeping oil
  49. No start (cranks OK)
  50. Advice on leak detection kits please
  51. Northstar dimensions
  52. AJ-Question
  53. New here need help
  54. help please
  55. Why didn't Cadillac make a larger displacement Northstar?
  56. Check Gas Cap Message.
  57. Changing the cams on an STS to the SLS Cams
  58. why wont my fans work?
  59. 99 STS, almost working
  60. Loud Engine Whine
  61. Over-sized Northstar Pistons
  62. overheating problem
  63. seville with shifting problems 1rst > 2nd
  64. msd coil?
  65. very hard start in the cold on N*
  66. L37 or LD8 ????
  67. Need a reliable source for Northstar Torque specs
  68. Northstar Rod Spec's & 3.6L
  69. symptoms of bolt failure/lifted heads
  70. 99 Deville Northstar Overheating -wanting non contradicting answers
  71. 2000 DeVille Overheating Update
  72. Bad Alternator?
  73. 1996 Deville Troubleshoot update
  74. Fuel pressure regulator?
  75. IAC Counts
  76. Thermagasket Does It Work???
  77. Missed one connection
  78. Those Damn HEAD GASKETS
  79. LC3 FWD Swap?
  80. ? For Ewill or AJ
  81. looking for pictures of northstar valvetrain
  82. So, here are the symptoms, whats wrong
  83. Northstar Valvetrain Clatter
  84. 200 DeVille Blows hot air at low speed turns cold
  85. Could it be the Water Pump Knocking
  86. Can anyone tell me whats wrong?
  87. Front Valvetrain Clacking
  88. labor cost to replace o2 sensor????
  89. Difference between VIN Y and VIN 9
  90. Got Code P1415 Please Help
  91. 2000 Deville with northstar
  92. 1034-loss of PCM data
  93. Obd I P046
  94. Computer/wiring problems
  95. Need help on 98 Seville/Northstar
  96. New HG Installed on a 99, Pings on Start Up?
  97. Got my 05 Deville back from Dealer!! and extra part for sale.
  98. Need help - going to see a 98 Seville STS on Sat, what do I check?
  99. Sick Tranny?
  100. Engine Help!!!
  101. 2nd annual midwest meet !
  102. 2001 Cadillac SLS LD8 Bore-increase
  103. White Smoke coming from front of car
  104. !996 Deville help troubleshoot
  105. I have a question about cold startswith N*??
  106. How do you disable the traction control perm without having to press the button in...
  107. 94 N* EGR valve ?? Engine stumbles.
  108. P0121, P0507 High Idle???
  109. 94 ETC no shift, wont idle
  110. Looking for '98 ETC mods
  111. What's your preference for plugs and wires ?
  112. intake manifold exploded/hole after backfire??
  113. 95 STS Cooling System Quirks
  114. MSD ignition
  115. Idea for vehicle to do Northstar swap on.
  116. NEED HELP - HAVE CODES P1416 and P0101
  117. quote???
  118. FPR replacement on 94 N*
  119. torker
  120. Sticking gas pedal????, high idle all of the sudden???? What do I check??? PLZ HELP!!
  121. Crankshaft & Cam sensors questions
  122. Why is my '96 Northstar now using oil?
  123. how to search forums..and cpk sensor question (2000 cadillac stalling)
  124. O2 Sensor Questions
  125. How can you tell if your HG's are shot?
  126. Rebuilt N*
  127. 97 STS vs. The drag strip
  128. 94 northstar starting problem
  129. Can i use synthetic oil in northstar?
  130. Getting Screwed
  131. Where is the main engine to body ground?
  132. white smoke n hp loss
  133. Is it me, or are alot of N*s having cracked blocks
  134. this is not an arguement thread for oil !
  135. 95 northstar tranny
  136. Is It Possible To???
  137. Engine stopped at the end of an exit ramp Any IDEAS WHY?
  138. Serpentine belt
  139. Need a VIN to a STS with the Z(W) option, I have the option but I don't like the Euro
  140. Removing EGR on a'96 SLS
  141. Whats the easy way to change the alternator on a Northstar? (99 Deville)
  142. Northstar shifting past redline
  143. 93/94 engines
  144. No Heat at Idle
  145. What's involved to drop the oil pan?
  146. Iradium spark plugs for 99deville? Better or worse? What the best plug & wires??
  147. Tell me about Force Motors/pressure control solenoids
  148. 99 Head Gasket Warranty?
  149. How can u save gas on a 99 deville?
  150. PC0327 - 96DeVille
  151. 1995 STS Cooling problems?
  152. Sts engine has this knocking sound
  153. Heater Core Leak/ Need Some Help, Please
  154. GM MAF sensor information and Discussion
  155. bottom end problems??
  156. Car runs hot but doesn't over heat
  157. Fuel Line Leak
  158. I have a cracked block, what next?
  159. RTV Silicone on Transmission Side Cover?
  160. hypothetically speaking
  161. 02 STS uses tons of oil
  162. Northstar Modifications
  163. 10w40 in N*
  164. 94 STS starts only if pressing gas, idles rough, dies after a couple minutes
  165. upgrading 94 concours
  166. '98 STS valve cover
  167. HELP- Dropped a bolt in the intake valley
  168. Intake manifold crack?
  169. Need Some Code Help 02 Seville
  170. Crankshaft position sensor
  171. engine compatibility
  172. 1994 DeVille Concourse
  173. misfire at idle
  174. Need help removing 99 STS northstar motor
  175. 1st time motor pull for HG on 99 N*, some questions
  176. 97 Etc N* Head Gasket Project
  177. Headgasket Leaks & Repairs
  178. check coolant light on???
  179. High idle/ IAC clicking?
  180. HELP!! Fuel Rail Recall Problems 1996 Seville
  181. Engine stutter/punch
  182. P0741 TCC Stuck ON, tried much, what next
  183. What is the Northstar suppose to sound like?
  184. 2003 Sts 0-70
  185. IAC valve
  186. strange rumble sound during hard acceleration.
  187. 2002 STC - Front Engine Mount Broken
  188. Mobil 1 5W30 meets GM spec 4718M but Mobil 1 10W30 DOES NOT. WHAT GIVES?
  189. Unbolting "beauty cover" on a 1999 Deville What GIVES
  190. Where is my IAT Sensor located? 99 sts
  191. 1997 Seville SLS
  192. Arizona Cadillac Owners Cheap Northstar Engine
  193. questions about PC0300 code on 96 deville
  194. Help with this code...97 Cadillac deville
  195. Drive vs 3 What's better???
  196. Cam numbers?
  197. What Spark Plugs for a 1999 DeVille Northstar?
  198. Using synthetic oil in a Northstar-Why does Cadillac recommend 10W30?
  199. Engine Oil Myths including ZDP by GM
  200. anyone ever use HEAL-A-SEAL
  201. Does vacuum sound from Surge Tank equal head gaskets?
  202. 94 Northstar Flexplate knocking noice. HELP!!
  203. 2003 DHS - Sluggish - EGR?
  204. Whirring/grinding That's Speed Sensitive
  205. 2002 deville/dhs engine trouble
  206. How can I clean the Mass Air Flow??
  207. Thanks for nothing, Northstar.
  208. P0147 - Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 3 - overheating
  209. Crank sensor tech 95 sts
  210. 1st gear WOT
  211. The End
  212. 99 STS Turbo charged video
  213. valve seals
  214. 1999 Seville Ignition DTC Help!
  215. Smoking Northstar?
  216. How long is your NS dipstick?
  217. weep holes
  218. engine swap for a 2001 dts
  219. P0741 - TCC System Stuck Off
  220. new Delco spark plug wires installed
  221. 1998 Deville overheating
  222. Help Having A Heart Attack! P039 / TRanny?
  223. N* programmer?
  224. Is it possible?
  225. Northstar Buick
  226. N* Runs Rough at Cold Start
  227. Bank 1 , 2 ??????
  228. Engine build
  229. P0300,p - Engine Misfire Detected 2002 deville, help please
  230. 2003 Deville with RWD
  231. Starter location
  232. Questions, Questions, and more Questions
  233. 93 sts traction disabled
  234. rental lincoln
  235. how to stay away from power loss
  236. 96 sts supercharger
  237. Are headgasket issues getting more common lately?
  238. 1998 Seville STS Chiptuning
  239. Tranny problems?
  240. Northstar Dyno Registry
  241. New Engine...climate control issues.
  242. Cryogenics
  243. My Photo Essay N* Head Gasket Repair Job
  244. Custom intake and nitrous
  245. 94 concours
  246. SLS Y-Code Engine: Do I need to replace the EGR Valve? PCM?
  247. service manual
  248. Possible Applications for Northstar?
  249. Need help....PLZ!!
  250. so i got a few PCM codes