: Northstar Engines and System Technical Discussion



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  1. Heater Core Leak/ Need Some Help, Please
  2. GM MAF sensor information and Discussion
  3. bottom end problems??
  4. Car runs hot but doesn't over heat
  5. Fuel Line Leak
  6. I have a cracked block, what next?
  7. RTV Silicone on Transmission Side Cover?
  8. hypothetically speaking
  9. 02 STS uses tons of oil
  10. Northstar Modifications
  11. 10w40 in N*
  12. 94 STS starts only if pressing gas, idles rough, dies after a couple minutes
  13. upgrading 94 concours
  14. '98 STS valve cover
  15. HELP- Dropped a bolt in the intake valley
  16. Intake manifold crack?
  17. Need Some Code Help 02 Seville
  18. Crankshaft position sensor
  19. engine compatibility
  20. 1994 DeVille Concourse
  21. misfire at idle
  22. Need help removing 99 STS northstar motor
  23. 1st time motor pull for HG on 99 N*, some questions
  24. 97 Etc N* Head Gasket Project
  25. Headgasket Leaks & Repairs
  26. check coolant light on???
  27. High idle/ IAC clicking?
  28. HELP!! Fuel Rail Recall Problems 1996 Seville
  29. Engine stutter/punch
  30. P0741 TCC Stuck ON, tried much, what next
  31. What is the Northstar suppose to sound like?
  32. 2003 Sts 0-70
  33. IAC valve
  34. strange rumble sound during hard acceleration.
  35. 2002 STC - Front Engine Mount Broken
  36. Mobil 1 5W30 meets GM spec 4718M but Mobil 1 10W30 DOES NOT. WHAT GIVES?
  37. Unbolting "beauty cover" on a 1999 Deville What GIVES
  38. Where is my IAT Sensor located? 99 sts
  39. 1997 Seville SLS
  40. Arizona Cadillac Owners Cheap Northstar Engine
  41. questions about PC0300 code on 96 deville
  42. Help with this code...97 Cadillac deville
  43. Drive vs 3 What's better???
  44. Cam numbers?
  45. What Spark Plugs for a 1999 DeVille Northstar?
  46. Using synthetic oil in a Northstar-Why does Cadillac recommend 10W30?
  47. Engine Oil Myths including ZDP by GM
  48. anyone ever use HEAL-A-SEAL
  49. Does vacuum sound from Surge Tank equal head gaskets?
  50. 94 Northstar Flexplate knocking noice. HELP!!
  51. 2003 DHS - Sluggish - EGR?
  52. Whirring/grinding That's Speed Sensitive
  53. 2002 deville/dhs engine trouble
  54. How can I clean the Mass Air Flow??
  55. Thanks for nothing, Northstar.
  56. P0147 - Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 3 - overheating
  57. Crank sensor tech 95 sts
  58. 1st gear WOT
  59. The End
  60. 99 STS Turbo charged video
  61. valve seals
  62. 1999 Seville Ignition DTC Help!
  63. Smoking Northstar?
  64. How long is your NS dipstick?
  65. weep holes
  66. engine swap for a 2001 dts
  67. P0741 - TCC System Stuck Off
  68. new Delco spark plug wires installed
  69. 1998 Deville overheating
  70. Help Having A Heart Attack! P039 / TRanny?
  71. N* programmer?
  72. Is it possible?
  73. Northstar Buick
  74. N* Runs Rough at Cold Start
  75. Bank 1 , 2 ??????
  76. Engine build
  77. P0300,p - Engine Misfire Detected 2002 deville, help please
  78. 2003 Deville with RWD
  79. Starter location
  80. Questions, Questions, and more Questions
  81. 93 sts traction disabled
  82. rental lincoln
  83. how to stay away from power loss
  84. 96 sts supercharger
  85. Are headgasket issues getting more common lately?
  86. 1998 Seville STS Chiptuning
  87. Tranny problems?
  88. Northstar Dyno Registry
  89. New Engine...climate control issues.
  90. Cryogenics
  91. My Photo Essay N* Head Gasket Repair Job
  92. Custom intake and nitrous
  93. 94 concours
  94. SLS Y-Code Engine: Do I need to replace the EGR Valve? PCM?
  95. service manual
  96. Possible Applications for Northstar?
  97. Need help....PLZ!!
  98. so i got a few PCM codes
  99. GM's Veiw on Fuel and Oil Additives
  100. How do I Reset the Change Oil Message?
  101. so when i went to pull codes, it just said all
  102. T061 T083
  103. 97 Deville No Longer Starts
  104. help on my 99' seville sls
  105. Starting issue
  106. 97 SLS Motor Swap to an 03. Is it possible?
  107. head
  108. 99 SLS and Straight DexCool rather than 50/50
  109. No 1st Gear!!!
  110. Cheap Northstar in NH, 35,000 miles
  111. Steering Wheel puff of smoke
  112. on the tranny subject
  113. Talk about luck!!
  114. New motor runs a lil hotter?
  115. o2 sensor question
  116. What is HOT for a blown head gasket
  117. Need Help Info On Where To Buy Rebuilt Engine
  118. compatable parts
  119. NorthStar swap wiring harness
  120. product question
  121. How long do you think caddy will keep the N*?
  122. SS Fuel Rail Removal
  123. Would this be a wise choice? [CAI] on a 184,000 mile northstar
  124. E85 on northstar ???
  125. just got my Plates
  126. 1996 Cadillac DeVille NO CODES ????
  127. Engine code - EOP
  128. Type of engine?
  129. Turbo Charged STS Cadillac
  130. Northstar Cam specs
  131. How can I drive 1000 miles with a coolant leak?
  132. To Rebuild or not.
  133. Do you use dealer for Northstar repairs?
  134. How long do Northstar engines last?
  135. 4.6 northstar fuel pressure?
  136. 150 miles in limp home mode
  137. CKP Question for One of the Techs
  138. Any problems trying 20W-50 in a '97?
  139. New 95' STS owner with tech question
  140. tune up ,whats involved?
  141. Oh shoot...need help ASAP...:(
  142. Radiator Cooling Fans not running
  143. Ram Air! (Maybe)
  144. Engine runs a bit rough during cold winter starts
  145. "break in" period for new Northstar engine
  146. How many miles to you get per tankfull with your north*?
  147. Inserts
  148. GM now offers Premium Remanufactured 4.6L Northstar
  149. 00 to 03 engine in a 98 or 99 Seville.
  150. recommended shop in Toronto/Kitchener area
  151. After head gasket repair engine knocks
  152. transaxel fluid change
  153. N* Injectors and Fuel Pressure Regulator
  154. transaxel filter
  155. 2002 plentum leak
  156. Sts Running Terrible
  157. 96 Cylinder head on 93 block
  158. My car has 121k on it..should I change the trany fluid?
  159. 96 to 99 Eldo, Deville, and 96, 97 Seville Tuning
  160. valve noise at startup
  161. Breaking in a N*
  162. Invisible leak (coolant)
  163. Another seafoam thread
  164. Is there an easy way to change coolant?
  165. what is considered normal coolant temperture for a north*?
  166. please identify mystery black box 01 DTS
  167. Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know
  168. Flushing Radiator
  169. Are there any worthwhile performance mods for the 98 north*?
  170. Was there more then one north* engine in 1998?
  171. Three (3) Codes on 1996 SLS: P1406, P0401, P0108
  172. Northstar Air Consumption.
  173. Eldo Gone....
  174. 4T80-E Transmission Fluid Change - DONE!
  175. P119 - Shorted Fuel Injector Problem
  176. How often do you WOT your north*?
  177. Before i go to beat the crap outta my car - WOT cleaning
  178. denso wires ???
  179. timeserts -so do these things prevent bad head gaskets
  180. Northstar 32 valve good for swap-out?
  181. '94 sts.. ignition coils, ignition control module?
  182. Car will not turn over....
  183. Has anyone ever got the P0741 code?
  184. Are there any good oil additives to add...
  185. I read a post about top tier gasoline....
  186. '95 Concours hard starting when it's cold outside
  187. my service engine soon light is on
  188. bad idea to use 87 octane?
  189. royal purple on a N*
  190. 03 n* and trans in a 99 SLS
  191. What gives the Northstar its "whirring" sound at idle?
  192. 96 sts starter problems, questions?
  193. How would i get a custom pcm?
  194. Beef up a 4.6L NStar?
  195. squeeky serpatine belt *new belt and tensioner*
  196. N* performance
  197. what year was it?
  198. opinions on high flow cats
  199. Gasoline Consumption question
  200. Looking for a Timesert Kit
  201. Engine Performance mods 95 STS
  202. Which oil i need for my 96 eldorado????
  203. How long should I let the N* warm up in the morning?
  204. Timesert Kits?
  205. 1997 SLS (overheating)
  206. Changing brakes on 96 SLS
  207. 2000 dts northstar reliabilty
  208. 2002 ETC Collector-mobile.
  209. What's the difference between the STS and SLS engines?
  210. Internal Mods For Northstar
  211. 99 to 00+ swap differences
  212. stuttering at idle
  213. 1999 Cadillac STS love/hate relationship...
  214. Free Northstar Engine
  215. Help the new guy make a good decision
  216. High Performance Head Gaskets?
  217. Parts ID
  218. Not run for 6 years, what would you do?
  219. 00 PCM on a 99 engine
  220. Blown Headgasket
  221. Aluminum Block porisity
  222. Its Alive
  223. oil life monitor problem
  224. P094 limp mode, no overdrive
  225. Valve Stem Seal Puller
  226. Homemade Valve Spring Compressor
  227. What Should I Pay For Eibachs?
  228. Trans Fluid/Filter change and Coolant drain/refill...
  229. Randomly Creeping High Idle Problem
  230. Stock spark plug wires, 7 or 8 mm?
  231. transmission oil looks dark :S
  232. how many cubic inches
  233. Northstar coil pack firing order
  234. '96 Sls: P1406: Egr
  235. GM Oil Consumption TSB, 2007
  236. Dexcool/Peak coolant
  237. noobie questions
  238. God a northstar sounds sexy, but does something sound odd
  239. Coolant leak...
  240. Northstar motor install
  241. overheating, waterpump? 2002 deville w/ 120k miles
  242. Transmission won't "kickdown" 1994 Eldorado
  243. Blocks cracking on final head torque?
  244. How to remove timeserts?
  245. crankshaft postion sensor
  246. '05 STS - Slipping Transmission at low MPH
  247. rear wheel drive conversion
  248. Cadillac Overheating Issues
  249. humming noise
  250. Clogged vacuum port to fuel pressure regulator