: Northstar Engines and System Technical Discussion



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