: Northstar Engines and System Technical Discussion



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