: Northstar Engines and System Technical Discussion



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  1. 1996 Seville STS O2 Sensor REMOVAL. CAN"T GET TO IT
  2. 96 Seville where's the 02 Oxygen Sensor Location?? PLEASE HELP WONT PASS EMISSIONS!!!
  3. Long road trips good for the Northstar?
  4. headgaskets a 2nd time?
  5. 97 eldorado w/180,000 miles, should i upgrade to a preformance coil?
  6. 94 eldorado 4.6 - no codes - stumbling/chugging - about to give up
  7. Car not turning over
  8. Codes 340 and 1016 + Fixed A.I.R. with new coil cartridge?
  9. Transmission issue
  10. spark plugs
  11. Yearly engine oil changes really necessary?
  12. Overheating problem
  13. maybe you all know more
  14. What Oil For Northstar Cams and Flat Tappets?
  15. 93 seville sts fuel rail
  16. rear main seal
  17. 93-99 Camshaft picture needed
  18. Seville 03 shaking problems after tune-up.
  19. is it the head gasket again?
  20. Problems with starting the engine
  21. Adding an Electric water Pump 95 Northstar
  22. 1995 northstar for sale *LOCKED*
  23. After WOT Car smells strong of sulfur , rotten eggs
  24. Dexool Questions
  25. 2002 caddy deville
  26. Limp. Mode help
  27. Lifter starting to tap and needs replacing,
  28. Reg oil or Synthetic oil
  29. Coolant Shooting Out
  30. Random light miss during constant hwy cruising
  31. Which PCM??
  32. Fuel Injector O-Rings- Where go?
  33. air in cooling system
  34. Best oil and spark plugs for the northstar 4.6L
  35. Enginge doesn't crank
  36. Help!! Engine idling with hiccups
  37. Tach
  38. the day has come: headgasket
  39. '99 Seville STS
  40. What are the differences between 99> and 00< motors?
  41. Why do these motors break rods?
  42. pretty betty deville
  43. how reliable is northstars limp mode
  44. 1999 deville almost overheating
  45. 3.71 ever better with smaller wheels?
  46. Refrigerant pressure
  47. Minor Coolant Leak
  48. 93 sts misfires, stalls, very rough idle, looking for cause
  49. Any thoughts? Code P1350 p1375
  50. Injector spec for a Y2000 N*
  51. oil cooler
  52. TPS issue: Codes P0122, P1122. Help!
  53. Need Help Installing Air Filter ?
  54. 2002 Deville coolant leak
  55. Blew the head gaskets replacing the motor
  56. 1997 deville stalling at idle
  57. bad headgasket
  58. N* running Hot, Real Hot
  59. 99 deville oil pump
  60. 2001 Northstar AIR Valve
  61. Hydraulic valve-lash adjustor evaluation?
  62. 99 deville - RFA U1000 Help
  63. 91 GMC Sierra, with a Northstar?
  64. 96 96 Northstar Noise and Oil light issue With Video
  65. Speedomoter Reads wrong
  66. 2001 Deville Falls Dead
  67. 98 sls overheating
  68. EVAP Purge Solenoid
  69. P0171, P0174 After replaced Plenum
  70. 97 deville overheating??
  71. Batteries, voltage, power, and Optima
  72. Intake Manifold Removal Snag
  73. Smoke
  74. Come for a vacation while your HG's are replaced
  75. Exhaust manifold swap?
  76. Temp Indicator Question!
  77. Does Anyone Have Any Ideas???
  78. 2001 deville misfire
  79. '98 heads and cams on a 2000 block
  80. Fuel Rail / Fuel Injector Removal
  81. No Spark
  82. Puffs of smoke while revving in park
  83. Warping the Heads???
  84. A/c Discharge Hose
  85. Northstar Valve seals?
  86. Main studs?
  87. Notice of price increase on HG replacement
  88. Mystery Vacuum Hose
  89. Bad Thermostats or blown Head Gasket??? Help
  90. timeserts
  91. Northstar Engine belt
  92. Question about Time Serts?
  93. Iridium Spar Plugs
  94. Stock crank HP?
  95. How much better are the 00+ headgaskets.
  96. 97 ELDARADO w/ blown H/G
  97. allante 9 engine swap to a y engine
  98. Weird transmission behavior - any ideas?
  99. 3" Exhaust all the way back?
  100. FWD Sump swap for RWD?
  101. Early engine number needed
  102. Low oil pressure enigine stop no start
  103. Need Motor Mount R&R procedure in Tech Tips
  104. Crankshaft Position Sensor
  105. 2002 Eldog
  106. changing starter on 1998 deville--have you done it?
  107. 01 STS - Engine cutting out on accel
  108. Ram Air set-up on a 95 STS
  109. NorthStar painting touch up?
  110. Camchain timing
  111. 03 front (left) motor mount help
  112. Oil filter IArea
  113. I may need all forum members help, especially those who have ordered the stud kits.
  114. Do NS engines have an "air regulator"?
  115. Injector Alternatives
  116. Best year for a NorthStar??
  117. How to remove oil filter adapter???
  118. 95 N* intake issue
  119. How to lock flywheel without $150 tool?
  120. 2001 Deville DTS PO300 Random Misfires
  121. Cadillac STS Coolant, service stability system...
  122. anyone ever use Engine Ice Hi-Performance Coolant
  123. 1994 cadillac sts coolant loss
  124. What size of Time-Sert I have to buy ?
  125. 96 Eldo ETC I found the ABS computer cover...how do I get in it?? Do I force it?
  126. 96 Eldo engine sputters and stalls. P0300 and P1380 Engine Misfire.
  127. 01 STS Water pump grumbling noise
  128. Replacement Engine
  129. Coolant loss?
  130. what is the difference between the concourse and regular?
  131. '97 DeVille SES but no current codes?
  132. 95 sts hard shifting/chugging trans?
  133. combustion gas test turned yellow
  134. Northstar Died? no vacuum, no compression on cyl 6.
  135. Myrtle Beach Repair Shop
  136. High oil pressure
  137. Transmission help
  138. P0621
  139. 96 Seville AC system
  140. air box
  141. Engine almost stalls
  142. Help needed before I break something...
  143. Lean Cruise Tune
  144. 95 seville died and wont start
  145. would bad hg's cause the lower radiator hose not to get warm??
  146. Help..Which is #2 cylinder and other question
  147. cam sensor trigger
  148. getting p0741 code please help!!
  149. need help
  150. anyone know what this writing can mean?
  151. Primary timing chain sprocket wear?
  152. Still no short run power
  153. 96 concours crank prob
  154. On Vacation, just a bit of fun street racing....
  155. What is Normal Valve Train Noise?
  156. Fpr
  157. Need urgent help with spark plug wires
  158. PCM codes P0138 and P1139
  159. could this be a hg issue?
  160. barely running Northstar
  161. slightly overheating and coolant leak
  162. Help with TCC replacement parts list
  163. radiator fans not cutting on
  164. saying goodbye
  165. Transmission problems after HG fixed!!!
  166. 1996 STS Engine seized again what could be wrong?
  167. is there supposed to be something in the bottom radiator hoes?
  168. Bad head gasket without any symptoms???
  169. Crank Pulley removal/install
  170. how to check if the headgasket is in good shape before buying?
  171. newb question about tune-ups
  172. 1999 DeVille Coolant leak
  173. Coolant C/O Question
  174. HP rating from a sticker
  175. shelby northstar
  176. Wierd shaped bolt holding in IAC
  177. Check out my Headgasket Job in the car!!!!
  178. Crossover Manifold, Pipe Gasket Part Number
  179. Intake Manifold Cracked at Bolt Heads
  180. For all of us with the fluxuating speedometer / intermittent cruise control
  181. Transmission Strengths/Weaknesses
  182. looking for head gasket repair in tx
  183. Different Headgasket Question
  184. What is the difference between VIN 9 and VIN Y 4.6L Northstars ?
  185. I need to find someone closer than Canada to do my headgaskets !!
  186. Sold one of my '97 to my best friend, now it won't start
  187. 2001 STS vac leak at intake
  188. Overheats less in 3
  189. TERRIBLE Gas mileage "help"
  190. damm am i hard headed...over heating still
  191. still overheating need help...
  192. Found Coolant in the Valley. What could it be???
  193. Difficulty level on swapping a N* 4.6?
  194. Help with engine removal for STS
  195. Can 97 N* lifters be disassembled?
  196. front motor mount
  197. A/C delete pulley
  198. coolant leak
  199. Overpressurize relief valve boot
  200. 97 deville blown head gasket question
  201. The best preventative maintenance for my 97 N*?
  202. Service Stability System
  203. duramax1980
  204. 98 NS Brackets
  205. Intake Manifold Removal, '97 SLS
  206. Northstar Bracket
  207. my 1st post transmission problems i think
  208. Priming the oil pump on a northstar engine
  209. 2000 STS, N*interchangibility?
  210. Trying to find Intake Manifold Spacer
  211. PCM wiring without a complete car harness
  212. 99 ETC Weak hot restart?
  213. deville 2000 HG ???
  214. DHS would stall upon starting... would not idle
  215. Why Check the Oil When Hot?
  216. very little coolant circulation...i hope its not a head gasket
  217. '99 STS Oil Smell?
  218. Any good Northstar Mechanics in SoCal
  219. radiator drain valve
  220. New Studs to incorporate alignment pins
  221. 1997 Power Steering Pump Questions
  222. 2000 N* Head Gasket probability
  223. 00' STS N* Conversion ???
  224. 99 Deville/Headgasket Issue
  225. Misfire PC0300 Code
  226. Code P0741...Really confused.....Need help!!!
  227. Finally tore the motor apart
  228. 1997 sts stalled, Won't start
  229. HARD loud knock @ acceleration. help
  230. 93 Northstar Dies randomly. HELP!
  231. 95 SLS throttle body vacuum plug
  232. 2006 DTS engine issue
  233. 97 northstar balancer removal
  234. Advice on Northstar Transmission???
  235. oil in the antifreeze & overheating
  236. HG blown 375 days after a $3500 repair
  237. Northstar Coil Bank
  238. Engine wiring harness removal
  239. 97 seville sls coolant loss
  240. 98 deville engine question
  241. STS Blowing Out Oil But From WHERE?????
  242. '93 STS Oil cooler
  243. What kind of seal installer to use?
  244. Northstar head gasket replacement with warranty, Louisville KY - 1500 + parts
  245. how easy is changing the thermostat yourself
  246. Low speed stall
  247. Coolant Issue "00 STS"
  248. failed state inspection because of p0507
  249. Alternator questions....
  250. Bars Leaks Liquid Copper?