: Northstar Engines and System Technical Discussion



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  1. Unbolting "beauty cover" on a 1999 Deville What GIVES
  2. Where is my IAT Sensor located? 99 sts
  3. 1997 Seville SLS
  4. Arizona Cadillac Owners Cheap Northstar Engine
  5. questions about PC0300 code on 96 deville
  6. Help with this code...97 Cadillac deville
  7. Drive vs 3 What's better???
  8. Cam numbers?
  9. What Spark Plugs for a 1999 DeVille Northstar?
  10. Using synthetic oil in a Northstar-Why does Cadillac recommend 10W30?
  11. Engine Oil Myths including ZDP by GM
  12. anyone ever use HEAL-A-SEAL
  13. Does vacuum sound from Surge Tank equal head gaskets?
  14. 94 Northstar Flexplate knocking noice. HELP!!
  15. 2003 DHS - Sluggish - EGR?
  16. Whirring/grinding That's Speed Sensitive
  17. 2002 deville/dhs engine trouble
  18. How can I clean the Mass Air Flow??
  19. Thanks for nothing, Northstar.
  20. P0147 - Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 3 - overheating
  21. Crank sensor tech 95 sts
  22. 1st gear WOT
  23. The End
  24. 99 STS Turbo charged video
  25. valve seals
  26. 1999 Seville Ignition DTC Help!
  27. Smoking Northstar?
  28. How long is your NS dipstick?
  29. weep holes
  30. engine swap for a 2001 dts
  31. P0741 - TCC System Stuck Off
  32. new Delco spark plug wires installed
  33. 1998 Deville overheating
  34. Help Having A Heart Attack! P039 / TRanny?
  35. N* programmer?
  36. Is it possible?
  37. Northstar Buick
  38. N* Runs Rough at Cold Start
  39. Bank 1 , 2 ??????
  40. Engine build
  41. P0300,p - Engine Misfire Detected 2002 deville, help please
  42. 2003 Deville with RWD
  43. Starter location
  44. Questions, Questions, and more Questions
  45. 93 sts traction disabled
  46. rental lincoln
  47. how to stay away from power loss
  48. 96 sts supercharger
  49. Are headgasket issues getting more common lately?
  50. 1998 Seville STS Chiptuning
  51. Tranny problems?
  52. Northstar Dyno Registry
  53. New Engine...climate control issues.
  54. Cryogenics
  55. My Photo Essay N* Head Gasket Repair Job
  56. Custom intake and nitrous
  57. 94 concours
  58. SLS Y-Code Engine: Do I need to replace the EGR Valve? PCM?
  59. service manual
  60. Possible Applications for Northstar?
  61. Need help....PLZ!!
  62. so i got a few PCM codes
  63. GM's Veiw on Fuel and Oil Additives
  64. How do I Reset the Change Oil Message?
  65. so when i went to pull codes, it just said all
  66. T061 T083
  67. 97 Deville No Longer Starts
  68. help on my 99' seville sls
  69. Starting issue
  70. 97 SLS Motor Swap to an 03. Is it possible?
  71. head
  72. 99 SLS and Straight DexCool rather than 50/50
  73. No 1st Gear!!!
  74. Cheap Northstar in NH, 35,000 miles
  75. Steering Wheel puff of smoke
  76. on the tranny subject
  77. Talk about luck!!
  78. New motor runs a lil hotter?
  79. o2 sensor question
  80. What is HOT for a blown head gasket
  81. Need Help Info On Where To Buy Rebuilt Engine
  82. compatable parts
  83. NorthStar swap wiring harness
  84. product question
  85. How long do you think caddy will keep the N*?
  86. SS Fuel Rail Removal
  87. Would this be a wise choice? [CAI] on a 184,000 mile northstar
  88. E85 on northstar ???
  89. just got my Plates
  90. 1996 Cadillac DeVille NO CODES ????
  91. Engine code - EOP
  92. Type of engine?
  93. Turbo Charged STS Cadillac
  94. Northstar Cam specs
  95. How can I drive 1000 miles with a coolant leak?
  96. To Rebuild or not.
  97. Do you use dealer for Northstar repairs?
  98. How long do Northstar engines last?
  99. 4.6 northstar fuel pressure?
  100. 150 miles in limp home mode
  101. CKP Question for One of the Techs
  102. Any problems trying 20W-50 in a '97?
  103. New 95' STS owner with tech question
  104. tune up ,whats involved?
  105. Oh shoot...need help ASAP...:(
  106. Radiator Cooling Fans not running
  107. Ram Air! (Maybe)
  108. Engine runs a bit rough during cold winter starts
  109. "break in" period for new Northstar engine
  110. How many miles to you get per tankfull with your north*?
  111. Inserts
  112. GM now offers Premium Remanufactured 4.6L Northstar
  113. 00 to 03 engine in a 98 or 99 Seville.
  114. recommended shop in Toronto/Kitchener area
  115. After head gasket repair engine knocks
  116. transaxel fluid change
  117. N* Injectors and Fuel Pressure Regulator
  118. transaxel filter
  119. 2002 plentum leak
  120. Sts Running Terrible
  121. 96 Cylinder head on 93 block
  122. My car has 121k on it..should I change the trany fluid?
  123. 96 to 99 Eldo, Deville, and 96, 97 Seville Tuning
  124. valve noise at startup
  125. Breaking in a N*
  126. Invisible leak (coolant)
  127. Another seafoam thread
  128. Is there an easy way to change coolant?
  129. what is considered normal coolant temperture for a north*?
  130. please identify mystery black box 01 DTS
  131. Northstar Headgasket/Cracked Block/Bolt Failure? Please let us know
  132. Flushing Radiator
  133. Are there any worthwhile performance mods for the 98 north*?
  134. Was there more then one north* engine in 1998?
  135. Three (3) Codes on 1996 SLS: P1406, P0401, P0108
  136. Northstar Air Consumption.
  137. Eldo Gone....
  138. 4T80-E Transmission Fluid Change - DONE!
  139. P119 - Shorted Fuel Injector Problem
  140. How often do you WOT your north*?
  141. Before i go to beat the crap outta my car - WOT cleaning
  142. denso wires ???
  143. timeserts -so do these things prevent bad head gaskets
  144. Northstar 32 valve good for swap-out?
  145. '94 sts.. ignition coils, ignition control module?
  146. Car will not turn over....
  147. Has anyone ever got the P0741 code?
  148. Are there any good oil additives to add...
  149. I read a post about top tier gasoline....
  150. '95 Concours hard starting when it's cold outside
  151. my service engine soon light is on
  152. bad idea to use 87 octane?
  153. royal purple on a N*
  154. 03 n* and trans in a 99 SLS
  155. What gives the Northstar its "whirring" sound at idle?
  156. 96 sts starter problems, questions?
  157. How would i get a custom pcm?
  158. Beef up a 4.6L NStar?
  159. squeeky serpatine belt *new belt and tensioner*
  160. N* performance
  161. what year was it?
  162. opinions on high flow cats
  163. Gasoline Consumption question
  164. Looking for a Timesert Kit
  165. Engine Performance mods 95 STS
  166. Which oil i need for my 96 eldorado????
  167. How long should I let the N* warm up in the morning?
  168. Timesert Kits?
  169. 1997 SLS (overheating)
  170. Changing brakes on 96 SLS
  171. 2000 dts northstar reliabilty
  172. 2002 ETC Collector-mobile.
  173. What's the difference between the STS and SLS engines?
  174. Internal Mods For Northstar
  175. 99 to 00+ swap differences
  176. stuttering at idle
  177. 1999 Cadillac STS love/hate relationship...
  178. Free Northstar Engine
  179. Help the new guy make a good decision
  180. High Performance Head Gaskets?
  181. Parts ID
  182. Not run for 6 years, what would you do?
  183. 00 PCM on a 99 engine
  184. Blown Headgasket
  185. Aluminum Block porisity
  186. Its Alive
  187. oil life monitor problem
  188. P094 limp mode, no overdrive
  189. Valve Stem Seal Puller
  190. Homemade Valve Spring Compressor
  191. What Should I Pay For Eibachs?
  192. Trans Fluid/Filter change and Coolant drain/refill...
  193. Randomly Creeping High Idle Problem
  194. Stock spark plug wires, 7 or 8 mm?
  195. transmission oil looks dark :S
  196. how many cubic inches
  197. Northstar coil pack firing order
  198. '96 Sls: P1406: Egr
  199. GM Oil Consumption TSB, 2007
  200. Dexcool/Peak coolant
  201. noobie questions
  202. God a northstar sounds sexy, but does something sound odd
  203. Coolant leak...
  204. Northstar motor install
  205. overheating, waterpump? 2002 deville w/ 120k miles
  206. Transmission won't "kickdown" 1994 Eldorado
  207. Blocks cracking on final head torque?
  208. How to remove timeserts?
  209. crankshaft postion sensor
  210. '05 STS - Slipping Transmission at low MPH
  211. rear wheel drive conversion
  212. Cadillac Overheating Issues
  213. humming noise
  214. Clogged vacuum port to fuel pressure regulator
  215. thermostat starting to rise in strange way
  216. overheating , but ez fix?
  217. intermittent "hard start" when car at operating temp
  218. How to tell if block is timeserted?
  219. HELP ME!!!! What is the difference between ECON and Auto
  220. clogged cat = overheating?
  221. 2000-up coil pack crack
  222. 93 sts trans solenoids?
  223. Sealing off a blown head gasket
  224. Rear Main Seal
  225. Oil Life % vs. Reality
  226. Time out!!
  227. engines misses after teardown
  228. 93 STS Northstar won't start
  229. Motor build for sand rail
  230. What kind of gas mileage do you get with your Northstar?
  231. crank sensors
  232. 4.0 Northstar No Start PLEASE HELP!!!
  233. What Northstar do I have?
  234. 96 Eldorado ETC - Blown head gasket
  235. Radiator hoses
  236. headgasket pics
  237. Converter Size
  238. Cylinder Head Reconditioning
  239. 02 sts N* Engine knock
  240. MAF Issues
  241. Oil Pressure Issue - 2000 Cadillac DeVille
  242. Northstar mechanic in the Massachusetts??
  243. Need Help
  244. 93 sts misses and no 2-3 shift
  245. Good fresh tim-serted 94' SLS engine on ebay.
  246. Help, still overheating after headgasket job .
  247. Cooling fan motor bad?
  248. Roots style S/C for the northstar. Anytakers?
  249. front HVAC blower not working on 2000 deville
  250. 1995 STS won't start