: Northstar Engines and System Technical Discussion



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  1. is it the head gasket again?
  2. Problems with starting the engine
  3. Adding an Electric water Pump 95 Northstar
  4. 1995 northstar for sale *LOCKED*
  5. After WOT Car smells strong of sulfur , rotten eggs
  6. Dexool Questions
  7. 2002 caddy deville
  8. Limp. Mode help
  9. Lifter starting to tap and needs replacing,
  10. Reg oil or Synthetic oil
  11. Coolant Shooting Out
  12. Random light miss during constant hwy cruising
  13. Which PCM??
  14. Fuel Injector O-Rings- Where go?
  15. air in cooling system
  16. Best oil and spark plugs for the northstar 4.6L
  17. Enginge doesn't crank
  18. Help!! Engine idling with hiccups
  19. Tach
  20. the day has come: headgasket
  21. '99 Seville STS
  22. What are the differences between 99> and 00< motors?
  23. Why do these motors break rods?
  24. pretty betty deville
  25. how reliable is northstars limp mode
  26. 1999 deville almost overheating
  27. 3.71 ever better with smaller wheels?
  28. Refrigerant pressure
  29. Minor Coolant Leak
  30. 93 sts misfires, stalls, very rough idle, looking for cause
  31. Any thoughts? Code P1350 p1375
  32. Injector spec for a Y2000 N*
  33. oil cooler
  34. TPS issue: Codes P0122, P1122. Help!
  35. Need Help Installing Air Filter ?
  36. 2002 Deville coolant leak
  37. Blew the head gaskets replacing the motor
  38. 1997 deville stalling at idle
  39. bad headgasket
  40. N* running Hot, Real Hot
  41. 99 deville oil pump
  42. 2001 Northstar AIR Valve
  43. Hydraulic valve-lash adjustor evaluation?
  44. 99 deville - RFA U1000 Help
  45. 91 GMC Sierra, with a Northstar?
  46. 96 96 Northstar Noise and Oil light issue With Video
  47. Speedomoter Reads wrong
  48. 2001 Deville Falls Dead
  49. 98 sls overheating
  50. EVAP Purge Solenoid
  51. P0171, P0174 After replaced Plenum
  52. 97 deville overheating??
  53. Batteries, voltage, power, and Optima
  54. Intake Manifold Removal Snag
  55. Smoke
  56. Come for a vacation while your HG's are replaced
  57. Exhaust manifold swap?
  58. Temp Indicator Question!
  59. Does Anyone Have Any Ideas???
  60. 2001 deville misfire
  61. '98 heads and cams on a 2000 block
  62. Fuel Rail / Fuel Injector Removal
  63. No Spark
  64. Puffs of smoke while revving in park
  65. Warping the Heads???
  66. A/c Discharge Hose
  67. Northstar Valve seals?
  68. Main studs?
  69. Notice of price increase on HG replacement
  70. Mystery Vacuum Hose
  71. Bad Thermostats or blown Head Gasket??? Help
  72. timeserts
  73. Northstar Engine belt
  74. Question about Time Serts?
  75. Iridium Spar Plugs
  76. Stock crank HP?
  77. How much better are the 00+ headgaskets.
  78. 97 ELDARADO w/ blown H/G
  79. allante 9 engine swap to a y engine
  80. Weird transmission behavior - any ideas?
  81. 3" Exhaust all the way back?
  82. FWD Sump swap for RWD?
  83. Early engine number needed
  84. Low oil pressure enigine stop no start
  85. Need Motor Mount R&R procedure in Tech Tips
  86. Crankshaft Position Sensor
  87. 2002 Eldog
  88. changing starter on 1998 deville--have you done it?
  89. 01 STS - Engine cutting out on accel
  90. Ram Air set-up on a 95 STS
  91. NorthStar painting touch up?
  92. Camchain timing
  93. 03 front (left) motor mount help
  94. Oil filter IArea
  95. I may need all forum members help, especially those who have ordered the stud kits.
  96. Do NS engines have an "air regulator"?
  97. Injector Alternatives
  98. Best year for a NorthStar??
  99. How to remove oil filter adapter???
  100. 95 N* intake issue
  101. How to lock flywheel without $150 tool?
  102. 2001 Deville DTS PO300 Random Misfires
  103. Cadillac STS Coolant, service stability system...
  104. anyone ever use Engine Ice Hi-Performance Coolant
  105. 1994 cadillac sts coolant loss
  106. What size of Time-Sert I have to buy ?
  107. 96 Eldo ETC I found the ABS computer cover...how do I get in it?? Do I force it?
  108. 96 Eldo engine sputters and stalls. P0300 and P1380 Engine Misfire.
  109. 01 STS Water pump grumbling noise
  110. Replacement Engine
  111. Coolant loss?
  112. what is the difference between the concourse and regular?
  113. '97 DeVille SES but no current codes?
  114. 95 sts hard shifting/chugging trans?
  115. combustion gas test turned yellow
  116. Northstar Died? no vacuum, no compression on cyl 6.
  117. Myrtle Beach Repair Shop
  118. High oil pressure
  119. Transmission help
  120. P0621
  121. 96 Seville AC system
  122. air box
  123. Engine almost stalls
  124. Help needed before I break something...
  125. Lean Cruise Tune
  126. 95 seville died and wont start
  127. would bad hg's cause the lower radiator hose not to get warm??
  128. Help..Which is #2 cylinder and other question
  129. cam sensor trigger
  130. getting p0741 code please help!!
  131. need help
  132. anyone know what this writing can mean?
  133. Primary timing chain sprocket wear?
  134. Still no short run power
  135. 96 concours crank prob
  136. On Vacation, just a bit of fun street racing....
  137. What is Normal Valve Train Noise?
  138. Fpr
  139. Need urgent help with spark plug wires
  140. PCM codes P0138 and P1139
  141. could this be a hg issue?
  142. barely running Northstar
  143. slightly overheating and coolant leak
  144. Help with TCC replacement parts list
  145. radiator fans not cutting on
  146. saying goodbye
  147. Transmission problems after HG fixed!!!
  148. 1996 STS Engine seized again what could be wrong?
  149. is there supposed to be something in the bottom radiator hoes?
  150. Bad head gasket without any symptoms???
  151. Crank Pulley removal/install
  152. how to check if the headgasket is in good shape before buying?
  153. newb question about tune-ups
  154. 1999 DeVille Coolant leak
  155. Coolant C/O Question
  156. HP rating from a sticker
  157. shelby northstar
  158. Wierd shaped bolt holding in IAC
  159. Check out my Headgasket Job in the car!!!!
  160. Crossover Manifold, Pipe Gasket Part Number
  161. Intake Manifold Cracked at Bolt Heads
  162. For all of us with the fluxuating speedometer / intermittent cruise control
  163. Transmission Strengths/Weaknesses
  164. looking for head gasket repair in tx
  165. Different Headgasket Question
  166. What is the difference between VIN 9 and VIN Y 4.6L Northstars ?
  167. I need to find someone closer than Canada to do my headgaskets !!
  168. Sold one of my '97 to my best friend, now it won't start
  169. 2001 STS vac leak at intake
  170. Overheats less in 3
  171. TERRIBLE Gas mileage "help"
  172. damm am i hard headed...over heating still
  173. still overheating need help...
  174. Found Coolant in the Valley. What could it be???
  175. Difficulty level on swapping a N* 4.6?
  176. Help with engine removal for STS
  177. Can 97 N* lifters be disassembled?
  178. front motor mount
  179. A/C delete pulley
  180. coolant leak
  181. Overpressurize relief valve boot
  182. 97 deville blown head gasket question
  183. The best preventative maintenance for my 97 N*?
  184. Service Stability System
  185. duramax1980
  186. 98 NS Brackets
  187. Intake Manifold Removal, '97 SLS
  188. Northstar Bracket
  189. my 1st post transmission problems i think
  190. Priming the oil pump on a northstar engine
  191. 2000 STS, N*interchangibility?
  192. Trying to find Intake Manifold Spacer
  193. PCM wiring without a complete car harness
  194. 99 ETC Weak hot restart?
  195. deville 2000 HG ???
  196. DHS would stall upon starting... would not idle
  197. Why Check the Oil When Hot?
  198. very little coolant circulation...i hope its not a head gasket
  199. '99 STS Oil Smell?
  200. why didnt gm recall northstar engines for head gasket?
  201. Any good Northstar Mechanics in SoCal
  202. radiator drain valve
  203. New Studs to incorporate alignment pins
  204. 1997 Power Steering Pump Questions
  205. 2000 N* Head Gasket probability
  206. 00' STS N* Conversion ???
  207. 99 Deville/Headgasket Issue
  208. Misfire PC0300 Code
  209. Code P0741...Really confused.....Need help!!!
  210. Finally tore the motor apart
  211. 1997 sts stalled, Won't start
  212. HARD loud knock @ acceleration. help
  213. 93 Northstar Dies randomly. HELP!
  214. 95 SLS throttle body vacuum plug
  215. 2006 DTS engine issue
  216. 97 northstar balancer removal
  217. Advice on Northstar Transmission???
  218. oil in the antifreeze & overheating
  219. HG blown 375 days after a $3500 repair
  220. Northstar Coil Bank
  221. Engine wiring harness removal
  222. 97 seville sls coolant loss
  223. 98 deville engine question
  224. STS Blowing Out Oil But From WHERE?????
  225. '93 STS Oil cooler
  226. What kind of seal installer to use?
  227. Northstar head gasket replacement with warranty, Louisville KY - 1500 + parts
  228. how easy is changing the thermostat yourself
  229. Low speed stall
  230. Coolant Issue "00 STS"
  231. failed state inspection because of p0507
  232. Alternator questions....
  233. Bars Leaks Liquid Copper?
  234. which of these codes will cause my service engine light to be on?
  235. 97 Deville oil pan leak
  236. Please Help with long cranking time
  237. high idle
  238. Aftermarket Intake for '99 DeVille base model
  239. 02 Deville rough idle & codes
  240. 1998 Eldorado Head Gasket - 2nd time in 375-days
  241. Started to hear an intermittent grinding noise
  242. $788 To fix P0410 Code
  243. Car Stalled, won't restart
  244. Smell Coolant after Driving??
  245. 1994 STS quit in driveway, seems battery went dead.
  246. 2000 seville sts misfire
  247. Idle Air Control Valve (IAC)
  248. 94 sts intake cover gasket
  249. HG Budget for 97 STS
  250. Help.. 2000 dts tranny blown