: Northstar Engines and System Technical Discussion



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