: Northstar Engines and System Technical Discussion



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