: Northstar Engines and System Technical Discussion



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  1. EVAP Purge Solenoid
  2. P0171, P0174 After replaced Plenum
  3. 97 deville overheating??
  4. Batteries, voltage, power, and Optima
  5. Intake Manifold Removal Snag
  6. Smoke
  7. Come for a vacation while your HG's are replaced
  8. Exhaust manifold swap?
  9. Temp Indicator Question!
  10. Does Anyone Have Any Ideas???
  11. 2001 deville misfire
  12. '98 heads and cams on a 2000 block
  13. Fuel Rail / Fuel Injector Removal
  14. No Spark
  15. Puffs of smoke while revving in park
  16. Warping the Heads???
  17. A/c Discharge Hose
  18. Northstar Valve seals?
  19. Main studs?
  20. Notice of price increase on HG replacement
  21. Mystery Vacuum Hose
  22. Bad Thermostats or blown Head Gasket??? Help
  23. timeserts
  24. Northstar Engine belt
  25. Question about Time Serts?
  26. Iridium Spar Plugs
  27. Stock crank HP?
  28. How much better are the 00+ headgaskets.
  29. 97 ELDARADO w/ blown H/G
  30. allante 9 engine swap to a y engine
  31. Weird transmission behavior - any ideas?
  32. 3" Exhaust all the way back?
  33. FWD Sump swap for RWD?
  34. Early engine number needed
  35. Low oil pressure enigine stop no start
  36. Need Motor Mount R&R procedure in Tech Tips
  37. Crankshaft Position Sensor
  38. 2002 Eldog
  39. changing starter on 1998 deville--have you done it?
  40. 01 STS - Engine cutting out on accel
  41. Ram Air set-up on a 95 STS
  42. NorthStar painting touch up?
  43. Camchain timing
  44. 03 front (left) motor mount help
  45. Oil filter IArea
  46. I may need all forum members help, especially those who have ordered the stud kits.
  47. Do NS engines have an "air regulator"?
  48. Injector Alternatives
  49. Best year for a NorthStar??
  50. How to remove oil filter adapter???
  51. 95 N* intake issue
  52. How to lock flywheel without $150 tool?
  53. 2001 Deville DTS PO300 Random Misfires
  54. Cadillac STS Coolant, service stability system...
  55. anyone ever use Engine Ice Hi-Performance Coolant
  56. 1994 cadillac sts coolant loss
  57. What size of Time-Sert I have to buy ?
  58. 96 Eldo ETC I found the ABS computer cover...how do I get in it?? Do I force it?
  59. 96 Eldo engine sputters and stalls. P0300 and P1380 Engine Misfire.
  60. 01 STS Water pump grumbling noise
  61. Replacement Engine
  62. Coolant loss?
  63. what is the difference between the concourse and regular?
  64. '97 DeVille SES but no current codes?
  65. 95 sts hard shifting/chugging trans?
  66. combustion gas test turned yellow
  67. Northstar Died? no vacuum, no compression on cyl 6.
  68. Myrtle Beach Repair Shop
  69. High oil pressure
  70. Transmission help
  71. P0621
  72. 96 Seville AC system
  73. air box
  74. Engine almost stalls
  75. Help needed before I break something...
  76. Lean Cruise Tune
  77. 95 seville died and wont start
  78. would bad hg's cause the lower radiator hose not to get warm??
  79. Help..Which is #2 cylinder and other question
  80. cam sensor trigger
  81. getting p0741 code please help!!
  82. need help
  83. anyone know what this writing can mean?
  84. Primary timing chain sprocket wear?
  85. Still no short run power
  86. 96 concours crank prob
  87. On Vacation, just a bit of fun street racing....
  88. What is Normal Valve Train Noise?
  89. Fpr
  90. Need urgent help with spark plug wires
  91. PCM codes P0138 and P1139
  92. could this be a hg issue?
  93. barely running Northstar
  94. slightly overheating and coolant leak
  95. Help with TCC replacement parts list
  96. radiator fans not cutting on
  97. saying goodbye
  98. Transmission problems after HG fixed!!!
  99. 1996 STS Engine seized again what could be wrong?
  100. is there supposed to be something in the bottom radiator hoes?
  101. Bad head gasket without any symptoms???
  102. Crank Pulley removal/install
  103. how to check if the headgasket is in good shape before buying?
  104. newb question about tune-ups
  105. 1999 DeVille Coolant leak
  106. Coolant C/O Question
  107. HP rating from a sticker
  108. shelby northstar
  109. Wierd shaped bolt holding in IAC
  110. Check out my Headgasket Job in the car!!!!
  111. Crossover Manifold, Pipe Gasket Part Number
  112. Intake Manifold Cracked at Bolt Heads
  113. For all of us with the fluxuating speedometer / intermittent cruise control
  114. Transmission Strengths/Weaknesses
  115. looking for head gasket repair in tx
  116. Different Headgasket Question
  117. What is the difference between VIN 9 and VIN Y 4.6L Northstars ?
  118. I need to find someone closer than Canada to do my headgaskets !!
  119. Sold one of my '97 to my best friend, now it won't start
  120. 2001 STS vac leak at intake
  121. Overheats less in 3
  122. TERRIBLE Gas mileage "help"
  123. damm am i hard headed...over heating still
  124. still overheating need help...
  125. Found Coolant in the Valley. What could it be???
  126. Difficulty level on swapping a N* 4.6?
  127. Help with engine removal for STS
  128. Can 97 N* lifters be disassembled?
  129. front motor mount
  130. A/C delete pulley
  131. coolant leak
  132. Overpressurize relief valve boot
  133. 97 deville blown head gasket question
  134. The best preventative maintenance for my 97 N*?
  135. Service Stability System
  136. duramax1980
  137. 98 NS Brackets
  138. Intake Manifold Removal, '97 SLS
  139. Northstar Bracket
  140. my 1st post transmission problems i think
  141. Priming the oil pump on a northstar engine
  142. 2000 STS, N*interchangibility?
  143. Trying to find Intake Manifold Spacer
  144. PCM wiring without a complete car harness
  145. 99 ETC Weak hot restart?
  146. deville 2000 HG ???
  147. DHS would stall upon starting... would not idle
  148. Why Check the Oil When Hot?
  149. very little coolant circulation...i hope its not a head gasket
  150. '99 STS Oil Smell?
  151. why didnt gm recall northstar engines for head gasket?
  152. Any good Northstar Mechanics in SoCal
  153. radiator drain valve
  154. New Studs to incorporate alignment pins
  155. 1997 Power Steering Pump Questions
  156. 2000 N* Head Gasket probability
  157. 00' STS N* Conversion ???
  158. 99 Deville/Headgasket Issue
  159. Misfire PC0300 Code
  160. Code P0741...Really confused.....Need help!!!
  161. Finally tore the motor apart
  162. 1997 sts stalled, Won't start
  163. HARD loud knock @ acceleration. help
  164. 93 Northstar Dies randomly. HELP!
  165. 95 SLS throttle body vacuum plug
  166. 2006 DTS engine issue
  167. 97 northstar balancer removal
  168. Advice on Northstar Transmission???
  169. oil in the antifreeze & overheating
  170. HG blown 375 days after a $3500 repair
  171. Northstar Coil Bank
  172. Engine wiring harness removal
  173. 97 seville sls coolant loss
  174. 98 deville engine question
  175. STS Blowing Out Oil But From WHERE?????
  176. '93 STS Oil cooler
  177. What kind of seal installer to use?
  178. Northstar head gasket replacement with warranty, Louisville KY - 1500 + parts
  179. how easy is changing the thermostat yourself
  180. Low speed stall
  181. Coolant Issue "00 STS"
  182. failed state inspection because of p0507
  183. Alternator questions....
  184. Bars Leaks Liquid Copper?
  185. which of these codes will cause my service engine light to be on?
  186. 97 Deville oil pan leak
  187. Please Help with long cranking time
  188. high idle
  189. Aftermarket Intake for '99 DeVille base model
  190. 02 Deville rough idle & codes
  191. 1998 Eldorado Head Gasket - 2nd time in 375-days
  192. Started to hear an intermittent grinding noise
  193. $788 To fix P0410 Code
  194. Car Stalled, won't restart
  195. Smell Coolant after Driving??
  196. 1994 STS quit in driveway, seems battery went dead.
  197. 2000 seville sts misfire
  198. Idle Air Control Valve (IAC)
  199. 94 sts intake cover gasket
  200. HG Budget for 97 STS
  201. Help.. 2000 dts tranny blown
  202. 1999 Seville SLS hard start P1350/P1375
  203. Crap!!! Coolant leak! what do I do!?!?!?
  204. 97 Northstar Oil leak
  205. 94 Eldorado Idle problem
  206. Best service manual (rebuilding)
  207. low oil pressure indictator
  208. Any idea what I should pay to get the evap solenoid replaced ?
  209. Thinking of rebuilding motor... questions..
  210. 2001 Deville getting hot
  211. Oil pressure
  212. Cooling system tablets after HG job
  213. HG Jobs for all, anywhere in Canada or USA in my new shop
  214. where to get headgasket job done?
  215. Northstar Engine Gets Gummy?
  216. STS low power
  217. Northstar engine miss
  218. 2002 Deville P3008 code
  219. Real Performance Parts for the L37
  220. HELP outta town with tranny issues
  221. Cooling fans and hard driving- temp spikes
  222. Convert 98 SLS motor into STS motor?
  223. NO Codes but stalls...
  224. Stand-alone Northstar engine/trans for swap
  225. 4T80E solenoid shift replacement
  226. N* Swap with Factory ECM and avoiding DTC's
  227. Vin lookup for engine history
  228. 1999 STS Traction Control off......Unable to turn it on.
  229. 98 deville no fan / tech 2 commanded fan on
  230. 1999 Cadillac Seville OVERHEATING :(
  231. Any differences in an Export N* Engine and a Domestic One?
  232. To much Antifreez
  233. Synthetic or Regular Oil in 08 Escalade ESV?
  234. Stalling when wet
  235. 1998 STS : Code v
  236. 02 Deville plenum question
  237. MSD Timing Controller - Question for AJ
  238. Cranshaft Main Bolts
  239. Rear Main Seal Install
  240. Where to find coolant test?
  241. Can I put a 2001 Northstar in a 1997 Eldorado?
  242. Major coolant leak
  243. I think i'm ready
  244. what to look for buying a used northstar powered car
  245. Happy ending to overheating problem
  246. 2000 sts
  247. Fully Polished Aluminum Strut Tower Brace for 98+Seville and 00+ Deville
  248. o2 sensor thread repair
  249. Bypass AC pump 94 Eldorado
  250. Northstar oil leak, main bolts