: Northstar Engines and System Technical Discussion



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