: Northstar Engines and System Technical Discussion



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  1. Coolant Leak. Where's it coming from?
  2. Water pump Purge line?
  3. 5w30 or 0w30
  4. Destroying a N* Engine
  5. N* engine removal - newbee
  6. 02 DHS overheating
  7. TCC Stuck Off
  8. No clue what to do. Northstar blues
  9. problem with map sensors
  10. 2001 caddy sts seville tranny
  11. What is going on with the car?
  12. Spark Plug Wires
  13. "Hush" or "Gasp" Before Expected Throttle Response
  14. my 93 ETC Eldorado N* has a question for you guys
  15. Which spark plugs to buy?
  16. Thoughts on Dex-Cool and Head Gaskets
  17. 2001 cadillac deville small hesitations
  18. Normal Operating Temperature?
  19. Intermittent starting issue 97Seville SLS
  20. Trouble finding exhaust leak 99 Deville Y motor
  21. Is 235 too hot for a N*star on hilly roads?
  22. Spark Plugs ACDELCO or somthign els ?
  23. Good mechanics to fix head gasket in Oceanside, California area
  24. rough idle, only when in gear and brake on
  25. The first head gasket failure - 1 out of around 90 or so
  26. Tranny problems?
  27. how to install serpentine belt on 98 concours
  28. engine swap
  29. Why high fuel pressure?
  30. 1997 Northstar low speed hesitation and noise
  31. 2001 DeVille DHS / North Star motor losing power
  32. Air-Dam / Belly Splash Guard importance on cooling your N*
  33. Make Your Own Damn Motor Mount
  34. cooling fans inop p01660
  35. Hard shifting 1-2 Help!
  36. Fabricated Torque Strut for the 2000+ Northstar
  37. Horrible Engine Bucking 93 N* Allante
  38. 1998 Seville STS Performance Engine Build - STAGE I
  39. My pulley melted
  40. 01 Deville issues, no codes, no check engine light
  41. '96 Deville Coolant Change
  42. Overheating
  43. White smoke after changing starter (by removing intake manifold)
  44. No current codes but...
  45. N* Powered Camaro
  46. Strange coolant/heat issue 99 STS
  47. 1998 STS engine full of mystery sludge?!
  48. Rough idle-stumble on accel
  49. 95 Eldorado 4.6L Engine stalls
  50. Oil in intake manifold 4.6 1993
  51. 98 Deville Concours Preformance Exhaust???
  52. Engine year compatibility
  53. Sucessful Northstar head gasket repair in a bottle
  54. PCM 09354896 code DCHJ
  55. 1997 4.6 eldorado up hill over heats
  56. fuel injector ohms
  57. 93 sts fuel rail removal tools
  58. Air ride compressor
  59. Overheating??
  60. Codes P0122 and P1122...
  61. Motor mount replaced!! WTF!!!!!
  62. 1996 Seville STS O2 Sensor REMOVAL. CAN"T GET TO IT
  63. 96 Seville where's the 02 Oxygen Sensor Location?? PLEASE HELP WONT PASS EMISSIONS!!!
  64. Long road trips good for the Northstar?
  65. headgaskets a 2nd time?
  66. 97 eldorado w/180,000 miles, should i upgrade to a preformance coil?
  67. 94 eldorado 4.6 - no codes - stumbling/chugging - about to give up
  68. Car not turning over
  69. Codes 340 and 1016 + Fixed A.I.R. with new coil cartridge?
  70. Transmission issue
  71. spark plugs
  72. Yearly engine oil changes really necessary?
  73. Overheating problem
  74. maybe you all know more
  75. What Oil For Northstar Cams and Flat Tappets?
  76. 93 seville sts fuel rail
  77. rear main seal
  78. 93-99 Camshaft picture needed
  79. Seville 03 shaking problems after tune-up.
  80. is it the head gasket again?
  81. Problems with starting the engine
  82. Adding an Electric water Pump 95 Northstar
  83. 1995 northstar for sale *LOCKED*
  84. After WOT Car smells strong of sulfur , rotten eggs
  85. Dexool Questions
  86. 2002 caddy deville
  87. Limp. Mode help
  88. Lifter starting to tap and needs replacing,
  89. Reg oil or Synthetic oil
  90. Coolant Shooting Out
  91. Random light miss during constant hwy cruising
  92. Which PCM??
  93. Fuel Injector O-Rings- Where go?
  94. air in cooling system
  95. Best oil and spark plugs for the northstar 4.6L
  96. Enginge doesn't crank
  97. Help!! Engine idling with hiccups
  98. Tach
  99. the day has come: headgasket
  100. '99 Seville STS
  101. What are the differences between 99> and 00< motors?
  102. Why do these motors break rods?
  103. pretty betty deville
  104. how reliable is northstars limp mode
  105. 1999 deville almost overheating
  106. 3.71 ever better with smaller wheels?
  107. Refrigerant pressure
  108. Minor Coolant Leak
  109. 93 sts misfires, stalls, very rough idle, looking for cause
  110. Any thoughts? Code P1350 p1375
  111. Injector spec for a Y2000 N*
  112. oil cooler
  113. TPS issue: Codes P0122, P1122. Help!
  114. Need Help Installing Air Filter ?
  115. 2002 Deville coolant leak
  116. Blew the head gaskets replacing the motor
  117. 1997 deville stalling at idle
  118. bad headgasket
  119. N* running Hot, Real Hot
  120. 99 deville oil pump
  121. 2001 Northstar AIR Valve
  122. Hydraulic valve-lash adjustor evaluation?
  123. 99 deville - RFA U1000 Help
  124. 91 GMC Sierra, with a Northstar?
  125. 96 96 Northstar Noise and Oil light issue With Video
  126. Speedomoter Reads wrong
  127. 2001 Deville Falls Dead
  128. 98 sls overheating
  129. EVAP Purge Solenoid
  130. P0171, P0174 After replaced Plenum
  131. 97 deville overheating??
  132. Batteries, voltage, power, and Optima
  133. Intake Manifold Removal Snag
  134. Smoke
  135. Come for a vacation while your HG's are replaced
  136. Exhaust manifold swap?
  137. Temp Indicator Question!
  138. Does Anyone Have Any Ideas???
  139. 2001 deville misfire
  140. '98 heads and cams on a 2000 block
  141. Fuel Rail / Fuel Injector Removal
  142. No Spark
  143. Puffs of smoke while revving in park
  144. Warping the Heads???
  145. A/c Discharge Hose
  146. Northstar Valve seals?
  147. Main studs?
  148. Notice of price increase on HG replacement
  149. Mystery Vacuum Hose
  150. Bad Thermostats or blown Head Gasket??? Help
  151. timeserts
  152. Northstar Engine belt
  153. Question about Time Serts?
  154. Iridium Spar Plugs
  155. Stock crank HP?
  156. How much better are the 00+ headgaskets.
  157. 97 ELDARADO w/ blown H/G
  158. allante 9 engine swap to a y engine
  159. Weird transmission behavior - any ideas?
  160. 3" Exhaust all the way back?
  161. FWD Sump swap for RWD?
  162. Early engine number needed
  163. Low oil pressure enigine stop no start
  164. Need Motor Mount R&R procedure in Tech Tips
  165. Crankshaft Position Sensor
  166. 2002 Eldog
  167. changing starter on 1998 deville--have you done it?
  168. 01 STS - Engine cutting out on accel
  169. Ram Air set-up on a 95 STS
  170. NorthStar painting touch up?
  171. Camchain timing
  172. 03 front (left) motor mount help
  173. Oil filter IArea
  174. I may need all forum members help, especially those who have ordered the stud kits.
  175. Do NS engines have an "air regulator"?
  176. Injector Alternatives
  177. Best year for a NorthStar??
  178. How to remove oil filter adapter???
  179. 95 N* intake issue
  180. How to lock flywheel without $150 tool?
  181. 2001 Deville DTS PO300 Random Misfires
  182. Cadillac STS Coolant, service stability system...
  183. anyone ever use Engine Ice Hi-Performance Coolant
  184. 1994 cadillac sts coolant loss
  185. What size of Time-Sert I have to buy ?
  186. 96 Eldo ETC I found the ABS computer cover...how do I get in it?? Do I force it?
  187. 96 Eldo engine sputters and stalls. P0300 and P1380 Engine Misfire.
  188. 01 STS Water pump grumbling noise
  189. Replacement Engine
  190. Coolant loss?
  191. what is the difference between the concourse and regular?
  192. '97 DeVille SES but no current codes?
  193. 95 sts hard shifting/chugging trans?
  194. combustion gas test turned yellow
  195. Northstar Died? no vacuum, no compression on cyl 6.
  196. Myrtle Beach Repair Shop
  197. High oil pressure
  198. Transmission help
  199. P0621
  200. 96 Seville AC system
  201. air box
  202. Engine almost stalls
  203. Help needed before I break something...
  204. Lean Cruise Tune
  205. 95 seville died and wont start
  206. would bad hg's cause the lower radiator hose not to get warm??
  207. Help..Which is #2 cylinder and other question
  208. cam sensor trigger
  209. getting p0741 code please help!!
  210. need help
  211. anyone know what this writing can mean?
  212. Primary timing chain sprocket wear?
  213. Still no short run power
  214. 96 concours crank prob
  215. On Vacation, just a bit of fun street racing....
  216. What is Normal Valve Train Noise?
  217. Fpr
  218. Need urgent help with spark plug wires
  219. PCM codes P0138 and P1139
  220. could this be a hg issue?
  221. barely running Northstar
  222. slightly overheating and coolant leak
  223. Help with TCC replacement parts list
  224. radiator fans not cutting on
  225. saying goodbye
  226. Transmission problems after HG fixed!!!
  227. 1996 STS Engine seized again what could be wrong?
  228. is there supposed to be something in the bottom radiator hoes?
  229. Bad head gasket without any symptoms???
  230. Crank Pulley removal/install
  231. how to check if the headgasket is in good shape before buying?
  232. newb question about tune-ups
  233. 1999 DeVille Coolant leak
  234. Coolant C/O Question
  235. HP rating from a sticker
  236. shelby northstar
  237. Wierd shaped bolt holding in IAC
  238. Check out my Headgasket Job in the car!!!!
  239. Crossover Manifold, Pipe Gasket Part Number
  240. Intake Manifold Cracked at Bolt Heads
  241. For all of us with the fluxuating speedometer / intermittent cruise control
  242. Transmission Strengths/Weaknesses
  243. looking for head gasket repair in tx
  244. Different Headgasket Question
  245. What is the difference between VIN 9 and VIN Y 4.6L Northstars ?
  246. I need to find someone closer than Canada to do my headgaskets !!
  247. Sold one of my '97 to my best friend, now it won't start
  248. 2001 STS vac leak at intake
  249. Overheats less in 3
  250. TERRIBLE Gas mileage "help"