: Northstar Engines and System Technical Discussion



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