: Northstar Engines and System Technical Discussion



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  1. 1998 Seville STS Performance Engine Build - STAGE I
  2. My pulley melted
  3. 01 Deville issues, no codes, no check engine light
  4. '96 Deville Coolant Change
  5. Overheating
  6. White smoke after changing starter (by removing intake manifold)
  7. No current codes but...
  8. N* Powered Camaro
  9. Strange coolant/heat issue 99 STS
  10. 1998 STS engine full of mystery sludge?!
  11. Rough idle-stumble on accel
  12. 95 Eldorado 4.6L Engine stalls
  13. Oil in intake manifold 4.6 1993
  14. 98 Deville Concours Preformance Exhaust???
  15. Engine year compatibility
  16. Sucessful Northstar head gasket repair in a bottle
  17. PCM 09354896 code DCHJ
  18. 1997 4.6 eldorado up hill over heats
  19. fuel injector ohms
  20. 93 sts fuel rail removal tools
  21. Air ride compressor
  22. Overheating??
  23. Codes P0122 and P1122...
  24. Motor mount replaced!! WTF!!!!!
  25. 1996 Seville STS O2 Sensor REMOVAL. CAN"T GET TO IT
  26. 96 Seville where's the 02 Oxygen Sensor Location?? PLEASE HELP WONT PASS EMISSIONS!!!
  27. Long road trips good for the Northstar?
  28. headgaskets a 2nd time?
  29. 97 eldorado w/180,000 miles, should i upgrade to a preformance coil?
  30. 94 eldorado 4.6 - no codes - stumbling/chugging - about to give up
  31. Car not turning over
  32. Codes 340 and 1016 + Fixed A.I.R. with new coil cartridge?
  33. Transmission issue
  34. spark plugs
  35. Yearly engine oil changes really necessary?
  36. Overheating problem
  37. maybe you all know more
  38. What Oil For Northstar Cams and Flat Tappets?
  39. 93 seville sts fuel rail
  40. rear main seal
  41. 93-99 Camshaft picture needed
  42. Seville 03 shaking problems after tune-up.
  43. is it the head gasket again?
  44. Problems with starting the engine
  45. Adding an Electric water Pump 95 Northstar
  46. 1995 northstar for sale *LOCKED*
  47. After WOT Car smells strong of sulfur , rotten eggs
  48. Dexool Questions
  49. 2002 caddy deville
  50. Limp. Mode help
  51. Lifter starting to tap and needs replacing,
  52. Reg oil or Synthetic oil
  53. Coolant Shooting Out
  54. Random light miss during constant hwy cruising
  55. Which PCM??
  56. Fuel Injector O-Rings- Where go?
  57. air in cooling system
  58. Best oil and spark plugs for the northstar 4.6L
  59. Enginge doesn't crank
  60. Help!! Engine idling with hiccups
  61. Tach
  62. the day has come: headgasket
  63. '99 Seville STS
  64. What are the differences between 99> and 00< motors?
  65. Why do these motors break rods?
  66. pretty betty deville
  67. how reliable is northstars limp mode
  68. 1999 deville almost overheating
  69. 3.71 ever better with smaller wheels?
  70. Refrigerant pressure
  71. Minor Coolant Leak
  72. 93 sts misfires, stalls, very rough idle, looking for cause
  73. Any thoughts? Code P1350 p1375
  74. Injector spec for a Y2000 N*
  75. oil cooler
  76. TPS issue: Codes P0122, P1122. Help!
  77. Need Help Installing Air Filter ?
  78. 2002 Deville coolant leak
  79. Blew the head gaskets replacing the motor
  80. 1997 deville stalling at idle
  81. bad headgasket
  82. N* running Hot, Real Hot
  83. 99 deville oil pump
  84. 2001 Northstar AIR Valve
  85. Hydraulic valve-lash adjustor evaluation?
  86. 99 deville - RFA U1000 Help
  87. 91 GMC Sierra, with a Northstar?
  88. 96 96 Northstar Noise and Oil light issue With Video
  89. Speedomoter Reads wrong
  90. 2001 Deville Falls Dead
  91. 98 sls overheating
  92. EVAP Purge Solenoid
  93. P0171, P0174 After replaced Plenum
  94. 97 deville overheating??
  95. Batteries, voltage, power, and Optima
  96. Intake Manifold Removal Snag
  97. Smoke
  98. Come for a vacation while your HG's are replaced
  99. Exhaust manifold swap?
  100. Temp Indicator Question!
  101. Does Anyone Have Any Ideas???
  102. 2001 deville misfire
  103. '98 heads and cams on a 2000 block
  104. Fuel Rail / Fuel Injector Removal
  105. No Spark
  106. Puffs of smoke while revving in park
  107. Warping the Heads???
  108. A/c Discharge Hose
  109. Northstar Valve seals?
  110. Main studs?
  111. Notice of price increase on HG replacement
  112. Mystery Vacuum Hose
  113. Bad Thermostats or blown Head Gasket??? Help
  114. timeserts
  115. Northstar Engine belt
  116. Question about Time Serts?
  117. Iridium Spar Plugs
  118. Stock crank HP?
  119. How much better are the 00+ headgaskets.
  120. 97 ELDARADO w/ blown H/G
  121. allante 9 engine swap to a y engine
  122. Weird transmission behavior - any ideas?
  123. 3" Exhaust all the way back?
  124. FWD Sump swap for RWD?
  125. Early engine number needed
  126. Low oil pressure enigine stop no start
  127. Need Motor Mount R&R procedure in Tech Tips
  128. Crankshaft Position Sensor
  129. 2002 Eldog
  130. changing starter on 1998 deville--have you done it?
  131. 01 STS - Engine cutting out on accel
  132. Ram Air set-up on a 95 STS
  133. NorthStar painting touch up?
  134. Camchain timing
  135. 03 front (left) motor mount help
  136. Oil filter IArea
  137. I may need all forum members help, especially those who have ordered the stud kits.
  138. Do NS engines have an "air regulator"?
  139. Injector Alternatives
  140. Best year for a NorthStar??
  141. How to remove oil filter adapter???
  142. 95 N* intake issue
  143. How to lock flywheel without $150 tool?
  144. 2001 Deville DTS PO300 Random Misfires
  145. Cadillac STS Coolant, service stability system...
  146. anyone ever use Engine Ice Hi-Performance Coolant
  147. 1994 cadillac sts coolant loss
  148. What size of Time-Sert I have to buy ?
  149. 96 Eldo ETC I found the ABS computer cover...how do I get in it?? Do I force it?
  150. 96 Eldo engine sputters and stalls. P0300 and P1380 Engine Misfire.
  151. 01 STS Water pump grumbling noise
  152. Replacement Engine
  153. Coolant loss?
  154. what is the difference between the concourse and regular?
  155. '97 DeVille SES but no current codes?
  156. 95 sts hard shifting/chugging trans?
  157. combustion gas test turned yellow
  158. Northstar Died? no vacuum, no compression on cyl 6.
  159. Myrtle Beach Repair Shop
  160. High oil pressure
  161. Transmission help
  162. P0621
  163. 96 Seville AC system
  164. air box
  165. Engine almost stalls
  166. Help needed before I break something...
  167. Lean Cruise Tune
  168. 95 seville died and wont start
  169. would bad hg's cause the lower radiator hose not to get warm??
  170. Help..Which is #2 cylinder and other question
  171. cam sensor trigger
  172. getting p0741 code please help!!
  173. need help
  174. anyone know what this writing can mean?
  175. Primary timing chain sprocket wear?
  176. Still no short run power
  177. 96 concours crank prob
  178. On Vacation, just a bit of fun street racing....
  179. What is Normal Valve Train Noise?
  180. Fpr
  181. Need urgent help with spark plug wires
  182. PCM codes P0138 and P1139
  183. could this be a hg issue?
  184. barely running Northstar
  185. slightly overheating and coolant leak
  186. Help with TCC replacement parts list
  187. radiator fans not cutting on
  188. saying goodbye
  189. Transmission problems after HG fixed!!!
  190. 1996 STS Engine seized again what could be wrong?
  191. is there supposed to be something in the bottom radiator hoes?
  192. Bad head gasket without any symptoms???
  193. Crank Pulley removal/install
  194. how to check if the headgasket is in good shape before buying?
  195. newb question about tune-ups
  196. 1999 DeVille Coolant leak
  197. Coolant C/O Question
  198. HP rating from a sticker
  199. shelby northstar
  200. Wierd shaped bolt holding in IAC
  201. Check out my Headgasket Job in the car!!!!
  202. Crossover Manifold, Pipe Gasket Part Number
  203. Intake Manifold Cracked at Bolt Heads
  204. For all of us with the fluxuating speedometer / intermittent cruise control
  205. Transmission Strengths/Weaknesses
  206. looking for head gasket repair in tx
  207. Different Headgasket Question
  208. What is the difference between VIN 9 and VIN Y 4.6L Northstars ?
  209. I need to find someone closer than Canada to do my headgaskets !!
  210. Sold one of my '97 to my best friend, now it won't start
  211. 2001 STS vac leak at intake
  212. Overheats less in 3
  213. TERRIBLE Gas mileage "help"
  214. damm am i hard headed...over heating still
  215. still overheating need help...
  216. Found Coolant in the Valley. What could it be???
  217. Difficulty level on swapping a N* 4.6?
  218. Help with engine removal for STS
  219. Can 97 N* lifters be disassembled?
  220. front motor mount
  221. A/C delete pulley
  222. coolant leak
  223. Overpressurize relief valve boot
  224. 97 deville blown head gasket question
  225. The best preventative maintenance for my 97 N*?
  226. Service Stability System
  227. duramax1980
  228. 98 NS Brackets
  229. Intake Manifold Removal, '97 SLS
  230. Northstar Bracket
  231. my 1st post transmission problems i think
  232. Priming the oil pump on a northstar engine
  233. 2000 STS, N*interchangibility?
  234. Trying to find Intake Manifold Spacer
  235. PCM wiring without a complete car harness
  236. 99 ETC Weak hot restart?
  237. deville 2000 HG ???
  238. DHS would stall upon starting... would not idle
  239. Why Check the Oil When Hot?
  240. very little coolant circulation...i hope its not a head gasket
  241. '99 STS Oil Smell?
  242. Any good Northstar Mechanics in SoCal
  243. radiator drain valve
  244. New Studs to incorporate alignment pins
  245. 1997 Power Steering Pump Questions
  246. 2000 N* Head Gasket probability
  247. 00' STS N* Conversion ???
  248. 99 Deville/Headgasket Issue
  249. Misfire PC0300 Code
  250. Code P0741...Really confused.....Need help!!!