: Northstar Engines and System Technical Discussion



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  1. engine swap
  2. Why high fuel pressure?
  3. 1997 Northstar low speed hesitation and noise
  4. 2001 DeVille DHS / North Star motor losing power
  5. Air-Dam / Belly Splash Guard importance on cooling your N*
  6. Make Your Own Damn Motor Mount
  7. cooling fans inop p01660
  8. Hard shifting 1-2 Help!
  9. Fabricated Torque Strut for the 2000+ Northstar
  10. Horrible Engine Bucking 93 N* Allante
  11. 1998 Seville STS Performance Engine Build - STAGE I
  12. My pulley melted
  13. 01 Deville issues, no codes, no check engine light
  14. '96 Deville Coolant Change
  15. Overheating
  16. White smoke after changing starter (by removing intake manifold)
  17. No current codes but...
  18. N* Powered Camaro
  19. Strange coolant/heat issue 99 STS
  20. 1998 STS engine full of mystery sludge?!
  21. Rough idle-stumble on accel
  22. 95 Eldorado 4.6L Engine stalls
  23. Oil in intake manifold 4.6 1993
  24. 98 Deville Concours Preformance Exhaust???
  25. Engine year compatibility
  26. Sucessful Northstar head gasket repair in a bottle
  27. PCM 09354896 code DCHJ
  28. 1997 4.6 eldorado up hill over heats
  29. fuel injector ohms
  30. 93 sts fuel rail removal tools
  31. Air ride compressor
  32. Overheating??
  33. Codes P0122 and P1122...
  34. Motor mount replaced!! WTF!!!!!
  35. 1996 Seville STS O2 Sensor REMOVAL. CAN"T GET TO IT
  36. 96 Seville where's the 02 Oxygen Sensor Location?? PLEASE HELP WONT PASS EMISSIONS!!!
  37. Long road trips good for the Northstar?
  38. headgaskets a 2nd time?
  39. 97 eldorado w/180,000 miles, should i upgrade to a preformance coil?
  40. 94 eldorado 4.6 - no codes - stumbling/chugging - about to give up
  41. Car not turning over
  42. Codes 340 and 1016 + Fixed A.I.R. with new coil cartridge?
  43. Transmission issue
  44. spark plugs
  45. Yearly engine oil changes really necessary?
  46. Overheating problem
  47. maybe you all know more
  48. What Oil For Northstar Cams and Flat Tappets?
  49. 93 seville sts fuel rail
  50. rear main seal
  51. 93-99 Camshaft picture needed
  52. Seville 03 shaking problems after tune-up.
  53. is it the head gasket again?
  54. Problems with starting the engine
  55. Adding an Electric water Pump 95 Northstar
  56. 1995 northstar for sale *LOCKED*
  57. After WOT Car smells strong of sulfur , rotten eggs
  58. Dexool Questions
  59. 2002 caddy deville
  60. Limp. Mode help
  61. Lifter starting to tap and needs replacing,
  62. Reg oil or Synthetic oil
  63. Coolant Shooting Out
  64. Random light miss during constant hwy cruising
  65. Which PCM??
  66. Fuel Injector O-Rings- Where go?
  67. air in cooling system
  68. Best oil and spark plugs for the northstar 4.6L
  69. Enginge doesn't crank
  70. Help!! Engine idling with hiccups
  71. Tach
  72. the day has come: headgasket
  73. '99 Seville STS
  74. What are the differences between 99> and 00< motors?
  75. Why do these motors break rods?
  76. pretty betty deville
  77. how reliable is northstars limp mode
  78. 1999 deville almost overheating
  79. 3.71 ever better with smaller wheels?
  80. Refrigerant pressure
  81. Minor Coolant Leak
  82. 93 sts misfires, stalls, very rough idle, looking for cause
  83. Any thoughts? Code P1350 p1375
  84. Injector spec for a Y2000 N*
  85. oil cooler
  86. TPS issue: Codes P0122, P1122. Help!
  87. Need Help Installing Air Filter ?
  88. 2002 Deville coolant leak
  89. Blew the head gaskets replacing the motor
  90. 1997 deville stalling at idle
  91. bad headgasket
  92. N* running Hot, Real Hot
  93. 99 deville oil pump
  94. 2001 Northstar AIR Valve
  95. Hydraulic valve-lash adjustor evaluation?
  96. 99 deville - RFA U1000 Help
  97. 91 GMC Sierra, with a Northstar?
  98. 96 96 Northstar Noise and Oil light issue With Video
  99. Speedomoter Reads wrong
  100. 2001 Deville Falls Dead
  101. 98 sls overheating
  102. EVAP Purge Solenoid
  103. P0171, P0174 After replaced Plenum
  104. 97 deville overheating??
  105. Batteries, voltage, power, and Optima
  106. Intake Manifold Removal Snag
  107. Smoke
  108. Come for a vacation while your HG's are replaced
  109. Exhaust manifold swap?
  110. Temp Indicator Question!
  111. Does Anyone Have Any Ideas???
  112. 2001 deville misfire
  113. '98 heads and cams on a 2000 block
  114. Fuel Rail / Fuel Injector Removal
  115. No Spark
  116. Puffs of smoke while revving in park
  117. Warping the Heads???
  118. A/c Discharge Hose
  119. Northstar Valve seals?
  120. Main studs?
  121. Notice of price increase on HG replacement
  122. Mystery Vacuum Hose
  123. Bad Thermostats or blown Head Gasket??? Help
  124. timeserts
  125. Northstar Engine belt
  126. Question about Time Serts?
  127. Iridium Spar Plugs
  128. Stock crank HP?
  129. How much better are the 00+ headgaskets.
  130. 97 ELDARADO w/ blown H/G
  131. allante 9 engine swap to a y engine
  132. Weird transmission behavior - any ideas?
  133. 3" Exhaust all the way back?
  134. FWD Sump swap for RWD?
  135. Early engine number needed
  136. Low oil pressure enigine stop no start
  137. Need Motor Mount R&R procedure in Tech Tips
  138. Crankshaft Position Sensor
  139. 2002 Eldog
  140. changing starter on 1998 deville--have you done it?
  141. 01 STS - Engine cutting out on accel
  142. Ram Air set-up on a 95 STS
  143. NorthStar painting touch up?
  144. Camchain timing
  145. 03 front (left) motor mount help
  146. Oil filter IArea
  147. I may need all forum members help, especially those who have ordered the stud kits.
  148. Do NS engines have an "air regulator"?
  149. Injector Alternatives
  150. Best year for a NorthStar??
  151. How to remove oil filter adapter???
  152. 95 N* intake issue
  153. How to lock flywheel without $150 tool?
  154. 2001 Deville DTS PO300 Random Misfires
  155. Cadillac STS Coolant, service stability system...
  156. anyone ever use Engine Ice Hi-Performance Coolant
  157. 1994 cadillac sts coolant loss
  158. What size of Time-Sert I have to buy ?
  159. 96 Eldo ETC I found the ABS computer cover...how do I get in it?? Do I force it?
  160. 96 Eldo engine sputters and stalls. P0300 and P1380 Engine Misfire.
  161. 01 STS Water pump grumbling noise
  162. Replacement Engine
  163. Coolant loss?
  164. what is the difference between the concourse and regular?
  165. '97 DeVille SES but no current codes?
  166. 95 sts hard shifting/chugging trans?
  167. combustion gas test turned yellow
  168. Northstar Died? no vacuum, no compression on cyl 6.
  169. Myrtle Beach Repair Shop
  170. High oil pressure
  171. Transmission help
  172. P0621
  173. 96 Seville AC system
  174. air box
  175. Engine almost stalls
  176. Help needed before I break something...
  177. Lean Cruise Tune
  178. 95 seville died and wont start
  179. would bad hg's cause the lower radiator hose not to get warm??
  180. Help..Which is #2 cylinder and other question
  181. cam sensor trigger
  182. getting p0741 code please help!!
  183. need help
  184. anyone know what this writing can mean?
  185. Primary timing chain sprocket wear?
  186. Still no short run power
  187. 96 concours crank prob
  188. On Vacation, just a bit of fun street racing....
  189. What is Normal Valve Train Noise?
  190. Fpr
  191. Need urgent help with spark plug wires
  192. PCM codes P0138 and P1139
  193. could this be a hg issue?
  194. barely running Northstar
  195. slightly overheating and coolant leak
  196. Help with TCC replacement parts list
  197. radiator fans not cutting on
  198. saying goodbye
  199. Transmission problems after HG fixed!!!
  200. 1996 STS Engine seized again what could be wrong?
  201. is there supposed to be something in the bottom radiator hoes?
  202. Bad head gasket without any symptoms???
  203. Crank Pulley removal/install
  204. how to check if the headgasket is in good shape before buying?
  205. newb question about tune-ups
  206. 1999 DeVille Coolant leak
  207. Coolant C/O Question
  208. HP rating from a sticker
  209. shelby northstar
  210. Wierd shaped bolt holding in IAC
  211. Check out my Headgasket Job in the car!!!!
  212. Crossover Manifold, Pipe Gasket Part Number
  213. Intake Manifold Cracked at Bolt Heads
  214. For all of us with the fluxuating speedometer / intermittent cruise control
  215. Transmission Strengths/Weaknesses
  216. looking for head gasket repair in tx
  217. Different Headgasket Question
  218. What is the difference between VIN 9 and VIN Y 4.6L Northstars ?
  219. I need to find someone closer than Canada to do my headgaskets !!
  220. Sold one of my '97 to my best friend, now it won't start
  221. 2001 STS vac leak at intake
  222. Overheats less in 3
  223. TERRIBLE Gas mileage "help"
  224. damm am i hard headed...over heating still
  225. still overheating need help...
  226. Found Coolant in the Valley. What could it be???
  227. Difficulty level on swapping a N* 4.6?
  228. Help with engine removal for STS
  229. Can 97 N* lifters be disassembled?
  230. front motor mount
  231. A/C delete pulley
  232. coolant leak
  233. Overpressurize relief valve boot
  234. 97 deville blown head gasket question
  235. The best preventative maintenance for my 97 N*?
  236. Service Stability System
  237. duramax1980
  238. 98 NS Brackets
  239. Intake Manifold Removal, '97 SLS
  240. Northstar Bracket
  241. my 1st post transmission problems i think
  242. Priming the oil pump on a northstar engine
  243. 2000 STS, N*interchangibility?
  244. Trying to find Intake Manifold Spacer
  245. PCM wiring without a complete car harness
  246. 99 ETC Weak hot restart?
  247. deville 2000 HG ???
  248. DHS would stall upon starting... would not idle
  249. Why Check the Oil When Hot?
  250. very little coolant circulation...i hope its not a head gasket