: Northstar Engines and System Technical Discussion



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  1. 2002 Eldog
  2. changing starter on 1998 deville--have you done it?
  3. 01 STS - Engine cutting out on accel
  4. Ram Air set-up on a 95 STS
  5. NorthStar painting touch up?
  6. Camchain timing
  7. 03 front (left) motor mount help
  8. Oil filter IArea
  9. I may need all forum members help, especially those who have ordered the stud kits.
  10. Do NS engines have an "air regulator"?
  11. Injector Alternatives
  12. Best year for a NorthStar??
  13. How to remove oil filter adapter???
  14. 95 N* intake issue
  15. How to lock flywheel without $150 tool?
  16. 2001 Deville DTS PO300 Random Misfires
  17. Cadillac STS Coolant, service stability system...
  18. anyone ever use Engine Ice Hi-Performance Coolant
  19. 1994 cadillac sts coolant loss
  20. What size of Time-Sert I have to buy ?
  21. 96 Eldo ETC I found the ABS computer cover...how do I get in it?? Do I force it?
  22. 96 Eldo engine sputters and stalls. P0300 and P1380 Engine Misfire.
  23. 01 STS Water pump grumbling noise
  24. Replacement Engine
  25. Coolant loss?
  26. what is the difference between the concourse and regular?
  27. '97 DeVille SES but no current codes?
  28. 95 sts hard shifting/chugging trans?
  29. combustion gas test turned yellow
  30. Northstar Died? no vacuum, no compression on cyl 6.
  31. Myrtle Beach Repair Shop
  32. High oil pressure
  33. Transmission help
  34. P0621
  35. 96 Seville AC system
  36. air box
  37. Engine almost stalls
  38. Help needed before I break something...
  39. Lean Cruise Tune
  40. 95 seville died and wont start
  41. would bad hg's cause the lower radiator hose not to get warm??
  42. Help..Which is #2 cylinder and other question
  43. cam sensor trigger
  44. getting p0741 code please help!!
  45. need help
  46. anyone know what this writing can mean?
  47. Primary timing chain sprocket wear?
  48. Still no short run power
  49. 96 concours crank prob
  50. On Vacation, just a bit of fun street racing....
  51. What is Normal Valve Train Noise?
  52. Fpr
  53. Need urgent help with spark plug wires
  54. PCM codes P0138 and P1139
  55. could this be a hg issue?
  56. barely running Northstar
  57. slightly overheating and coolant leak
  58. Help with TCC replacement parts list
  59. radiator fans not cutting on
  60. saying goodbye
  61. Transmission problems after HG fixed!!!
  62. 1996 STS Engine seized again what could be wrong?
  63. is there supposed to be something in the bottom radiator hoes?
  64. Bad head gasket without any symptoms???
  65. Crank Pulley removal/install
  66. how to check if the headgasket is in good shape before buying?
  67. newb question about tune-ups
  68. 1999 DeVille Coolant leak
  69. Coolant C/O Question
  70. HP rating from a sticker
  71. shelby northstar
  72. Wierd shaped bolt holding in IAC
  73. Check out my Headgasket Job in the car!!!!
  74. Crossover Manifold, Pipe Gasket Part Number
  75. Intake Manifold Cracked at Bolt Heads
  76. For all of us with the fluxuating speedometer / intermittent cruise control
  77. Transmission Strengths/Weaknesses
  78. looking for head gasket repair in tx
  79. Different Headgasket Question
  80. What is the difference between VIN 9 and VIN Y 4.6L Northstars ?
  81. I need to find someone closer than Canada to do my headgaskets !!
  82. Sold one of my '97 to my best friend, now it won't start
  83. 2001 STS vac leak at intake
  84. Overheats less in 3
  85. TERRIBLE Gas mileage "help"
  86. damm am i hard headed...over heating still
  87. still overheating need help...
  88. Found Coolant in the Valley. What could it be???
  89. Difficulty level on swapping a N* 4.6?
  90. Help with engine removal for STS
  91. Can 97 N* lifters be disassembled?
  92. front motor mount
  93. A/C delete pulley
  94. coolant leak
  95. Overpressurize relief valve boot
  96. 97 deville blown head gasket question
  97. The best preventative maintenance for my 97 N*?
  98. Service Stability System
  99. duramax1980
  100. 98 NS Brackets
  101. Intake Manifold Removal, '97 SLS
  102. Northstar Bracket
  103. my 1st post transmission problems i think
  104. Priming the oil pump on a northstar engine
  105. 2000 STS, N*interchangibility?
  106. Trying to find Intake Manifold Spacer
  107. PCM wiring without a complete car harness
  108. 99 ETC Weak hot restart?
  109. deville 2000 HG ???
  110. DHS would stall upon starting... would not idle
  111. Why Check the Oil When Hot?
  112. very little coolant circulation...i hope its not a head gasket
  113. '99 STS Oil Smell?
  114. why didnt gm recall northstar engines for head gasket?
  115. Any good Northstar Mechanics in SoCal
  116. radiator drain valve
  117. New Studs to incorporate alignment pins
  118. 1997 Power Steering Pump Questions
  119. 2000 N* Head Gasket probability
  120. 00' STS N* Conversion ???
  121. 99 Deville/Headgasket Issue
  122. Misfire PC0300 Code
  123. Code P0741...Really confused.....Need help!!!
  124. Finally tore the motor apart
  125. 1997 sts stalled, Won't start
  126. HARD loud knock @ acceleration. help
  127. 93 Northstar Dies randomly. HELP!
  128. 95 SLS throttle body vacuum plug
  129. 2006 DTS engine issue
  130. 97 northstar balancer removal
  131. Advice on Northstar Transmission???
  132. oil in the antifreeze & overheating
  133. HG blown 375 days after a $3500 repair
  134. Northstar Coil Bank
  135. Engine wiring harness removal
  136. 97 seville sls coolant loss
  137. 98 deville engine question
  138. STS Blowing Out Oil But From WHERE?????
  139. '93 STS Oil cooler
  140. What kind of seal installer to use?
  141. Northstar head gasket replacement with warranty, Louisville KY - 1500 + parts
  142. how easy is changing the thermostat yourself
  143. Low speed stall
  144. Coolant Issue "00 STS"
  145. failed state inspection because of p0507
  146. Alternator questions....
  147. Bars Leaks Liquid Copper?
  148. which of these codes will cause my service engine light to be on?
  149. 97 Deville oil pan leak
  150. Please Help with long cranking time
  151. high idle
  152. Aftermarket Intake for '99 DeVille base model
  153. 02 Deville rough idle & codes
  154. 1998 Eldorado Head Gasket - 2nd time in 375-days
  155. Started to hear an intermittent grinding noise
  156. $788 To fix P0410 Code
  157. Car Stalled, won't restart
  158. Smell Coolant after Driving??
  159. 1994 STS quit in driveway, seems battery went dead.
  160. 2000 seville sts misfire
  161. Idle Air Control Valve (IAC)
  162. 94 sts intake cover gasket
  163. HG Budget for 97 STS
  164. Help.. 2000 dts tranny blown
  165. 1999 Seville SLS hard start P1350/P1375
  166. Crap!!! Coolant leak! what do I do!?!?!?
  167. 97 Northstar Oil leak
  168. 94 Eldorado Idle problem
  169. Best service manual (rebuilding)
  170. low oil pressure indictator
  171. Any idea what I should pay to get the evap solenoid replaced ?
  172. Thinking of rebuilding motor... questions..
  173. 2001 Deville getting hot
  174. Oil pressure
  175. Cooling system tablets after HG job
  176. HG Jobs for all, anywhere in Canada or USA in my new shop
  177. where to get headgasket job done?
  178. Northstar Engine Gets Gummy?
  179. STS low power
  180. Northstar engine miss
  181. 2002 Deville P3008 code
  182. Real Performance Parts for the L37
  183. HELP outta town with tranny issues
  184. Cooling fans and hard driving- temp spikes
  185. Convert 98 SLS motor into STS motor?
  186. NO Codes but stalls...
  187. Stand-alone Northstar engine/trans for swap
  188. 4T80E solenoid shift replacement
  189. N* Swap with Factory ECM and avoiding DTC's
  190. Vin lookup for engine history
  191. 1999 STS Traction Control off......Unable to turn it on.
  192. 98 deville no fan / tech 2 commanded fan on
  193. 1999 Cadillac Seville OVERHEATING :(
  194. Any differences in an Export N* Engine and a Domestic One?
  195. To much Antifreez
  196. Synthetic or Regular Oil in 08 Escalade ESV?
  197. Stalling when wet
  198. 1998 STS : Code v
  199. 02 Deville plenum question
  200. MSD Timing Controller - Question for AJ
  201. Cranshaft Main Bolts
  202. Rear Main Seal Install
  203. Where to find coolant test?
  204. Can I put a 2001 Northstar in a 1997 Eldorado?
  205. Major coolant leak
  206. I think i'm ready
  207. what to look for buying a used northstar powered car
  208. Happy ending to overheating problem
  209. 2000 sts
  210. Fully Polished Aluminum Strut Tower Brace for 98+Seville and 00+ Deville
  211. o2 sensor thread repair
  212. Bypass AC pump 94 Eldorado
  213. Northstar oil leak, main bolts
  214. 1993 Eldorado Northstar running rough
  215. Limp Mode?
  216. STS N* Rough Idle/Miss at Startup
  217. northstar aurora alternator
  218. Swap 4.9l v8 and 4.6l v8 northstar
  219. '99 STS stuck water water pump
  220. Water pump drive pulley
  221. heater on bench 1?
  222. Hello all
  223. wide engine temp swing
  224. Oil pan gasket
  225. I allmost died in my sts !!!!!, P065 drives itself
  226. 1993 seville STS
  227. cooling fan electrical diagram
  228. Fuel Injectors Revisited
  229. head gasket replacement in louisville kentucky area
  230. Cam Replacement in Car
  231. Northstar block #'s info needed on a used engine.
  232. oil filter for northstar
  233. 2000 sls overheating
  234. SLS overheating help? please?
  235. testing for bad HG
  236. 94 STS Coolant leak between block and flywheel
  237. Valve cover gaskets
  238. Hitting rev limiter in idle after startup
  239. Bad news Very Bad news
  240. EGR symptoms
  241. fuel pumps
  242. manifold pressure sensor or mat sensor
  243. Transaxle interchange
  244. TSB for Oil Consumption
  245. N*** PCM hacking Help
  246. Increasing fuel efficiency
  247. 94 Eldorado 4.6 High Idle
  248. photo shop help
  249. high engine rpm at start up
  250. Is it possible to have digital temperature display on 2002 deville ?