: Northstar Engines and System Technical Discussion



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