: Northstar Engines and System Technical Discussion



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  1. Thermagasket Does It Work???
  2. Missed one connection
  3. Those Damn HEAD GASKETS
  4. LC3 FWD Swap?
  5. ? For Ewill or AJ
  6. looking for pictures of northstar valvetrain
  7. So, here are the symptoms, whats wrong
  8. Northstar Valvetrain Clatter
  9. 200 DeVille Blows hot air at low speed turns cold
  10. Could it be the Water Pump Knocking
  11. Can anyone tell me whats wrong?
  12. Front Valvetrain Clacking
  13. labor cost to replace o2 sensor????
  14. Difference between VIN Y and VIN 9
  15. Got Code P1415 Please Help
  16. 2000 Deville with northstar
  17. 1034-loss of PCM data
  18. Obd I P046
  19. Computer/wiring problems
  20. Need help on 98 Seville/Northstar
  21. New HG Installed on a 99, Pings on Start Up?
  22. Got my 05 Deville back from Dealer!! and extra part for sale.
  23. Need help - going to see a 98 Seville STS on Sat, what do I check?
  24. Sick Tranny?
  25. Engine Help!!!
  26. 2nd annual midwest meet !
  27. 2001 Cadillac SLS LD8 Bore-increase
  28. White Smoke coming from front of car
  29. !996 Deville help troubleshoot
  30. I have a question about cold startswith N*??
  31. How do you disable the traction control perm without having to press the button in...
  32. 94 N* EGR valve ?? Engine stumbles.
  33. P0121, P0507 High Idle???
  34. 94 ETC no shift, wont idle
  35. Looking for '98 ETC mods
  36. What's your preference for plugs and wires ?
  37. intake manifold exploded/hole after backfire??
  38. 95 STS Cooling System Quirks
  39. MSD ignition
  40. Idea for vehicle to do Northstar swap on.
  41. NEED HELP - HAVE CODES P1416 and P0101
  42. quote???
  43. FPR replacement on 94 N*
  44. torker
  45. Sticking gas pedal????, high idle all of the sudden???? What do I check??? PLZ HELP!!
  46. Crankshaft & Cam sensors questions
  47. Why is my '96 Northstar now using oil?
  48. how to search forums..and cpk sensor question (2000 cadillac stalling)
  49. O2 Sensor Questions
  50. How can you tell if your HG's are shot?
  51. Rebuilt N*
  52. 97 STS vs. The drag strip
  53. 94 northstar starting problem
  54. Can i use synthetic oil in northstar?
  55. Getting Screwed
  56. Where is the main engine to body ground?
  57. white smoke n hp loss
  58. Is it me, or are alot of N*s having cracked blocks
  59. this is not an arguement thread for oil !
  60. 95 northstar tranny
  61. Is It Possible To???
  62. Engine stopped at the end of an exit ramp Any IDEAS WHY?
  63. Serpentine belt
  64. Need a VIN to a STS with the Z(W) option, I have the option but I don't like the Euro
  65. Removing EGR on a'96 SLS
  66. Whats the easy way to change the alternator on a Northstar? (99 Deville)
  67. Northstar shifting past redline
  68. 93/94 engines
  69. No Heat at Idle
  70. What's involved to drop the oil pan?
  71. Iradium spark plugs for 99deville? Better or worse? What the best plug & wires??
  72. Tell me about Force Motors/pressure control solenoids
  73. 99 Head Gasket Warranty?
  74. How can u save gas on a 99 deville?
  75. PC0327 - 96DeVille
  76. 1995 STS Cooling problems?
  77. Sts engine has this knocking sound
  78. Heater Core Leak/ Need Some Help, Please
  79. GM MAF sensor information and Discussion
  80. bottom end problems??
  81. Car runs hot but doesn't over heat
  82. Fuel Line Leak
  83. I have a cracked block, what next?
  84. RTV Silicone on Transmission Side Cover?
  85. hypothetically speaking
  86. 02 STS uses tons of oil
  87. Northstar Modifications
  88. 10w40 in N*
  89. 94 STS starts only if pressing gas, idles rough, dies after a couple minutes
  90. upgrading 94 concours
  91. '98 STS valve cover
  92. HELP- Dropped a bolt in the intake valley
  93. Intake manifold crack?
  94. Need Some Code Help 02 Seville
  95. Crankshaft position sensor
  96. engine compatibility
  97. 1994 DeVille Concourse
  98. misfire at idle
  99. Need help removing 99 STS northstar motor
  100. 1st time motor pull for HG on 99 N*, some questions
  101. 97 Etc N* Head Gasket Project
  102. Headgasket Leaks & Repairs
  103. check coolant light on???
  104. High idle/ IAC clicking?
  105. HELP!! Fuel Rail Recall Problems 1996 Seville
  106. Engine stutter/punch
  107. P0741 TCC Stuck ON, tried much, what next
  108. What is the Northstar suppose to sound like?
  109. 2003 Sts 0-70
  110. IAC valve
  111. strange rumble sound during hard acceleration.
  112. 2002 STC - Front Engine Mount Broken
  113. Mobil 1 5W30 meets GM spec 4718M but Mobil 1 10W30 DOES NOT. WHAT GIVES?
  114. Unbolting "beauty cover" on a 1999 Deville What GIVES
  115. Where is my IAT Sensor located? 99 sts
  116. 1997 Seville SLS
  117. Arizona Cadillac Owners Cheap Northstar Engine
  118. questions about PC0300 code on 96 deville
  119. Help with this code...97 Cadillac deville
  120. Drive vs 3 What's better???
  121. Cam numbers?
  122. What Spark Plugs for a 1999 DeVille Northstar?
  123. Using synthetic oil in a Northstar-Why does Cadillac recommend 10W30?
  124. Engine Oil Myths including ZDP by GM
  125. anyone ever use HEAL-A-SEAL
  126. Does vacuum sound from Surge Tank equal head gaskets?
  127. 94 Northstar Flexplate knocking noice. HELP!!
  128. 2003 DHS - Sluggish - EGR?
  129. Whirring/grinding That's Speed Sensitive
  130. 2002 deville/dhs engine trouble
  131. How can I clean the Mass Air Flow??
  132. Thanks for nothing, Northstar.
  133. P0147 - Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 3 - overheating
  134. Crank sensor tech 95 sts
  135. 1st gear WOT
  136. The End
  137. 99 STS Turbo charged video
  138. valve seals
  139. 1999 Seville Ignition DTC Help!
  140. Smoking Northstar?
  141. How long is your NS dipstick?
  142. weep holes
  143. engine swap for a 2001 dts
  144. P0741 - TCC System Stuck Off
  145. new Delco spark plug wires installed
  146. 1998 Deville overheating
  147. Help Having A Heart Attack! P039 / TRanny?
  148. N* programmer?
  149. Is it possible?
  150. Northstar Buick
  151. N* Runs Rough at Cold Start
  152. Bank 1 , 2 ??????
  153. Engine build
  154. P0300,p - Engine Misfire Detected 2002 deville, help please
  155. 2003 Deville with RWD
  156. Starter location
  157. Questions, Questions, and more Questions
  158. 93 sts traction disabled
  159. rental lincoln
  160. how to stay away from power loss
  161. 96 sts supercharger
  162. Are headgasket issues getting more common lately?
  163. 1998 Seville STS Chiptuning
  164. Tranny problems?
  165. Northstar Dyno Registry
  166. New Engine...climate control issues.
  167. Cryogenics
  168. My Photo Essay N* Head Gasket Repair Job
  169. Custom intake and nitrous
  170. 94 concours
  171. SLS Y-Code Engine: Do I need to replace the EGR Valve? PCM?
  172. service manual
  173. Possible Applications for Northstar?
  174. Need help....PLZ!!
  175. so i got a few PCM codes
  176. GM's Veiw on Fuel and Oil Additives
  177. How do I Reset the Change Oil Message?
  178. so when i went to pull codes, it just said all
  179. T061 T083
  180. 97 Deville No Longer Starts
  181. help on my 99' seville sls
  182. Starting issue
  183. 97 SLS Motor Swap to an 03. Is it possible?
  184. head
  185. 99 SLS and Straight DexCool rather than 50/50
  186. No 1st Gear!!!
  187. Cheap Northstar in NH, 35,000 miles
  188. Steering Wheel puff of smoke
  189. on the tranny subject
  190. Talk about luck!!
  191. New motor runs a lil hotter?
  192. o2 sensor question
  193. What is HOT for a blown head gasket
  194. Need Help Info On Where To Buy Rebuilt Engine
  195. compatable parts
  196. NorthStar swap wiring harness
  197. product question
  198. How long do you think caddy will keep the N*?
  199. SS Fuel Rail Removal
  200. Would this be a wise choice? [CAI] on a 184,000 mile northstar
  201. E85 on northstar ???
  202. just got my Plates
  203. 1996 Cadillac DeVille NO CODES ????
  204. Engine code - EOP
  205. Type of engine?
  206. Turbo Charged STS Cadillac
  207. Northstar Cam specs
  208. How can I drive 1000 miles with a coolant leak?
  209. To Rebuild or not.
  210. Do you use dealer for Northstar repairs?
  211. How long do Northstar engines last?
  212. 4.6 northstar fuel pressure?
  213. 150 miles in limp home mode
  214. CKP Question for One of the Techs
  215. Any problems trying 20W-50 in a '97?
  216. New 95' STS owner with tech question
  217. tune up ,whats involved?
  218. Oh shoot...need help ASAP...:(
  219. Radiator Cooling Fans not running
  220. Ram Air! (Maybe)
  221. Engine runs a bit rough during cold winter starts
  222. "break in" period for new Northstar engine
  223. How many miles to you get per tankfull with your north*?
  224. Inserts
  225. GM now offers Premium Remanufactured 4.6L Northstar
  226. 00 to 03 engine in a 98 or 99 Seville.
  227. recommended shop in Toronto/Kitchener area
  228. After head gasket repair engine knocks
  229. transaxel fluid change
  230. N* Injectors and Fuel Pressure Regulator
  231. transaxel filter
  232. 2002 plentum leak
  233. Sts Running Terrible
  234. 96 Cylinder head on 93 block
  235. My car has 121k on it..should I change the trany fluid?
  236. 96 to 99 Eldo, Deville, and 96, 97 Seville Tuning
  237. valve noise at startup
  238. Breaking in a N*
  239. Invisible leak (coolant)
  240. Another seafoam thread
  241. Is there an easy way to change coolant?
  242. what is considered normal coolant temperture for a north*?
  243. please identify mystery black box 01 DTS
  244. Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know
  245. Flushing Radiator
  246. Are there any worthwhile performance mods for the 98 north*?
  247. Was there more then one north* engine in 1998?
  248. Three (3) Codes on 1996 SLS: P1406, P0401, P0108
  249. Northstar Air Consumption.
  250. Eldo Gone....