: Northstar Engines and System Technical Discussion



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