: Northstar Engines and System Technical Discussion



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  1. check coolant light on???
  2. High idle/ IAC clicking?
  3. HELP!! Fuel Rail Recall Problems 1996 Seville
  4. Engine stutter/punch
  5. P0741 TCC Stuck ON, tried much, what next
  6. What is the Northstar suppose to sound like?
  7. 2003 Sts 0-70
  8. IAC valve
  9. strange rumble sound during hard acceleration.
  10. 2002 STC - Front Engine Mount Broken
  11. Mobil 1 5W30 meets GM spec 4718M but Mobil 1 10W30 DOES NOT. WHAT GIVES?
  12. Unbolting "beauty cover" on a 1999 Deville What GIVES
  13. Where is my IAT Sensor located? 99 sts
  14. 1997 Seville SLS
  15. Arizona Cadillac Owners Cheap Northstar Engine
  16. questions about PC0300 code on 96 deville
  17. Help with this code...97 Cadillac deville
  18. Drive vs 3 What's better???
  19. Cam numbers?
  20. What Spark Plugs for a 1999 DeVille Northstar?
  21. Using synthetic oil in a Northstar-Why does Cadillac recommend 10W30?
  22. Engine Oil Myths including ZDP by GM
  23. anyone ever use HEAL-A-SEAL
  24. Does vacuum sound from Surge Tank equal head gaskets?
  25. 94 Northstar Flexplate knocking noice. HELP!!
  26. 2003 DHS - Sluggish - EGR?
  27. Whirring/grinding That's Speed Sensitive
  28. 2002 deville/dhs engine trouble
  29. How can I clean the Mass Air Flow??
  30. Thanks for nothing, Northstar.
  31. P0147 - Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 3 - overheating
  32. Crank sensor tech 95 sts
  33. 1st gear WOT
  34. The End
  35. 99 STS Turbo charged video
  36. valve seals
  37. 1999 Seville Ignition DTC Help!
  38. Smoking Northstar?
  39. How long is your NS dipstick?
  40. weep holes
  41. engine swap for a 2001 dts
  42. P0741 - TCC System Stuck Off
  43. new Delco spark plug wires installed
  44. 1998 Deville overheating
  45. Help Having A Heart Attack! P039 / TRanny?
  46. N* programmer?
  47. Is it possible?
  48. Northstar Buick
  49. N* Runs Rough at Cold Start
  50. Bank 1 , 2 ??????
  51. Engine build
  52. P0300,p - Engine Misfire Detected 2002 deville, help please
  53. 2003 Deville with RWD
  54. Starter location
  55. Questions, Questions, and more Questions
  56. 93 sts traction disabled
  57. rental lincoln
  58. how to stay away from power loss
  59. 96 sts supercharger
  60. Are headgasket issues getting more common lately?
  61. 1998 Seville STS Chiptuning
  62. Tranny problems?
  63. Northstar Dyno Registry
  64. New Engine...climate control issues.
  65. Cryogenics
  66. My Photo Essay N* Head Gasket Repair Job
  67. Custom intake and nitrous
  68. 94 concours
  69. SLS Y-Code Engine: Do I need to replace the EGR Valve? PCM?
  70. service manual
  71. Possible Applications for Northstar?
  72. Need help....PLZ!!
  73. so i got a few PCM codes
  74. GM's Veiw on Fuel and Oil Additives
  75. How do I Reset the Change Oil Message?
  76. so when i went to pull codes, it just said all
  77. T061 T083
  78. 97 Deville No Longer Starts
  79. help on my 99' seville sls
  80. Starting issue
  81. 97 SLS Motor Swap to an 03. Is it possible?
  82. head
  83. 99 SLS and Straight DexCool rather than 50/50
  84. No 1st Gear!!!
  85. Cheap Northstar in NH, 35,000 miles
  86. Steering Wheel puff of smoke
  87. on the tranny subject
  88. Talk about luck!!
  89. New motor runs a lil hotter?
  90. o2 sensor question
  91. What is HOT for a blown head gasket
  92. Need Help Info On Where To Buy Rebuilt Engine
  93. compatable parts
  94. NorthStar swap wiring harness
  95. product question
  96. How long do you think caddy will keep the N*?
  97. SS Fuel Rail Removal
  98. Would this be a wise choice? [CAI] on a 184,000 mile northstar
  99. E85 on northstar ???
  100. just got my Plates
  101. 1996 Cadillac DeVille NO CODES ????
  102. Engine code - EOP
  103. Type of engine?
  104. Turbo Charged STS Cadillac
  105. Northstar Cam specs
  106. How can I drive 1000 miles with a coolant leak?
  107. To Rebuild or not.
  108. Do you use dealer for Northstar repairs?
  109. How long do Northstar engines last?
  110. 4.6 northstar fuel pressure?
  111. 150 miles in limp home mode
  112. CKP Question for One of the Techs
  113. Any problems trying 20W-50 in a '97?
  114. New 95' STS owner with tech question
  115. tune up ,whats involved?
  116. Oh shoot...need help ASAP...:(
  117. Radiator Cooling Fans not running
  118. Ram Air! (Maybe)
  119. Engine runs a bit rough during cold winter starts
  120. "break in" period for new Northstar engine
  121. How many miles to you get per tankfull with your north*?
  122. Inserts
  123. GM now offers Premium Remanufactured 4.6L Northstar
  124. 00 to 03 engine in a 98 or 99 Seville.
  125. recommended shop in Toronto/Kitchener area
  126. After head gasket repair engine knocks
  127. transaxel fluid change
  128. N* Injectors and Fuel Pressure Regulator
  129. transaxel filter
  130. 2002 plentum leak
  131. Sts Running Terrible
  132. 96 Cylinder head on 93 block
  133. My car has 121k on it..should I change the trany fluid?
  134. 96 to 99 Eldo, Deville, and 96, 97 Seville Tuning
  135. valve noise at startup
  136. Breaking in a N*
  137. Invisible leak (coolant)
  138. Another seafoam thread
  139. Is there an easy way to change coolant?
  140. what is considered normal coolant temperture for a north*?
  141. please identify mystery black box 01 DTS
  142. Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know
  143. Flushing Radiator
  144. Are there any worthwhile performance mods for the 98 north*?
  145. Was there more then one north* engine in 1998?
  146. Three (3) Codes on 1996 SLS: P1406, P0401, P0108
  147. Northstar Air Consumption.
  148. Eldo Gone....
  149. 4T80-E Transmission Fluid Change - DONE!
  150. P119 - Shorted Fuel Injector Problem
  151. How often do you WOT your north*?
  152. Before i go to beat the crap outta my car - WOT cleaning
  153. denso wires ???
  154. timeserts -so do these things prevent bad head gaskets
  155. Northstar 32 valve good for swap-out?
  156. '94 sts.. ignition coils, ignition control module?
  157. Car will not turn over....
  158. Has anyone ever got the P0741 code?
  159. Are there any good oil additives to add...
  160. I read a post about top tier gasoline....
  161. '95 Concours hard starting when it's cold outside
  162. my service engine soon light is on
  163. bad idea to use 87 octane?
  164. royal purple on a N*
  165. 03 n* and trans in a 99 SLS
  166. What gives the Northstar its "whirring" sound at idle?
  167. 96 sts starter problems, questions?
  168. How would i get a custom pcm?
  169. Beef up a 4.6L NStar?
  170. squeeky serpatine belt *new belt and tensioner*
  171. N* performance
  172. what year was it?
  173. opinions on high flow cats
  174. Gasoline Consumption question
  175. Looking for a Timesert Kit
  176. Engine Performance mods 95 STS
  177. Which oil i need for my 96 eldorado????
  178. How long should I let the N* warm up in the morning?
  179. Timesert Kits?
  180. 1997 SLS (overheating)
  181. Changing brakes on 96 SLS
  182. 2000 dts northstar reliabilty
  183. 2002 ETC Collector-mobile.
  184. What's the difference between the STS and SLS engines?
  185. Internal Mods For Northstar
  186. 99 to 00+ swap differences
  187. stuttering at idle
  188. 1999 Cadillac STS love/hate relationship...
  189. Free Northstar Engine
  190. Help the new guy make a good decision
  191. High Performance Head Gaskets?
  192. Parts ID
  193. Not run for 6 years, what would you do?
  194. 00 PCM on a 99 engine
  195. Blown Headgasket
  196. Aluminum Block porisity
  197. Its Alive
  198. oil life monitor problem
  199. P094 limp mode, no overdrive
  200. Valve Stem Seal Puller
  201. Homemade Valve Spring Compressor
  202. What Should I Pay For Eibachs?
  203. Trans Fluid/Filter change and Coolant drain/refill...
  204. Randomly Creeping High Idle Problem
  205. Stock spark plug wires, 7 or 8 mm?
  206. transmission oil looks dark :S
  207. how many cubic inches
  208. Northstar coil pack firing order
  209. '96 Sls: P1406: Egr
  210. GM Oil Consumption TSB, 2007
  211. Dexcool/Peak coolant
  212. noobie questions
  213. God a northstar sounds sexy, but does something sound odd
  214. Coolant leak...
  215. Northstar motor install
  216. overheating, waterpump? 2002 deville w/ 120k miles
  217. Transmission won't "kickdown" 1994 Eldorado
  218. Blocks cracking on final head torque?
  219. How to remove timeserts?
  220. crankshaft postion sensor
  221. '05 STS - Slipping Transmission at low MPH
  222. rear wheel drive conversion
  223. Cadillac Overheating Issues
  224. humming noise
  225. Clogged vacuum port to fuel pressure regulator
  226. thermostat starting to rise in strange way
  227. overheating , but ez fix?
  228. intermittent "hard start" when car at operating temp
  229. How to tell if block is timeserted?
  230. HELP ME!!!! What is the difference between ECON and Auto
  231. clogged cat = overheating?
  232. 2000-up coil pack crack
  233. 93 sts trans solenoids?
  234. Sealing off a blown head gasket
  235. Rear Main Seal
  236. Oil Life % vs. Reality
  237. Time out!!
  238. engines misses after teardown
  239. 93 STS Northstar won't start
  240. Motor build for sand rail
  241. What kind of gas mileage do you get with your Northstar?
  242. crank sensors
  243. 4.0 Northstar No Start PLEASE HELP!!!
  244. What Northstar do I have?
  245. 96 Eldorado ETC - Blown head gasket
  246. Radiator hoses
  247. headgasket pics
  248. Converter Size
  249. Cylinder Head Reconditioning
  250. 02 sts N* Engine knock