: Northstar Engines and System Technical Discussion



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  1. manifold blowoff
  2. sealant for blown heads?
  3. 1994 STS Overheating (I think)...
  4. Block Identification Numbers
  5. Snapping noise when coming to a stop..Answered Finally!!!
  6. Overheating Eldorado Help
  7. need some help
  8. 05' STS. Little help with P0102 please
  9. 2000 DTS P0300 code
  10. Head gasket repair
  11. P041 1994 deville concours
  12. Quick Oil Question
  13. rough idle, no codes, rough start
  14. coolant leak
  15. STS Radiator Hose Replacement
  16. 95 Eldorado ETC - Cooling system
  17. power steering line: o-ring?
  18. broken bolt in oil pan
  19. Water pump & crossover gasket - $$$$
  20. Help Me Please
  21. Rad Cap PSI was wrong
  22. Coolant Leak. Where's it coming from?
  23. Water pump Purge line?
  24. 5w30 or 0w30
  25. Destroying a N* Engine
  26. N* engine removal - newbee
  27. 02 DHS overheating
  28. TCC Stuck Off
  29. No clue what to do. Northstar blues
  30. problem with map sensors
  31. 2001 caddy sts seville tranny
  32. What is going on with the car?
  33. Spark Plug Wires
  34. "Hush" or "Gasp" Before Expected Throttle Response
  35. my 93 ETC Eldorado N* has a question for you guys
  36. Which spark plugs to buy?
  37. Thoughts on Dex-Cool and Head Gaskets
  38. 2001 cadillac deville small hesitations
  39. Normal Operating Temperature?
  40. Intermittent starting issue 97Seville SLS
  41. Trouble finding exhaust leak 99 Deville Y motor
  42. Is 235 too hot for a N*star on hilly roads?
  43. Spark Plugs ACDELCO or somthign els ?
  44. Good mechanics to fix head gasket in Oceanside, California area
  45. rough idle, only when in gear and brake on
  46. The first head gasket failure - 1 out of around 90 or so
  47. Tranny problems?
  48. how to install serpentine belt on 98 concours
  49. engine swap
  50. Why high fuel pressure?
  51. 1997 Northstar low speed hesitation and noise
  52. 2001 DeVille DHS / North Star motor losing power
  53. Air-Dam / Belly Splash Guard importance on cooling your N*
  54. Make Your Own Damn Motor Mount
  55. cooling fans inop p01660
  56. Hard shifting 1-2 Help!
  57. Fabricated Torque Strut for the 2000+ Northstar
  58. Horrible Engine Bucking 93 N* Allante
  59. 1998 Seville STS Performance Engine Build - STAGE I
  60. My pulley melted
  61. 01 Deville issues, no codes, no check engine light
  62. '96 Deville Coolant Change
  63. Overheating
  64. White smoke after changing starter (by removing intake manifold)
  65. No current codes but...
  66. N* Powered Camaro
  67. Strange coolant/heat issue 99 STS
  68. 1998 STS engine full of mystery sludge?!
  69. Rough idle-stumble on accel
  70. 95 Eldorado 4.6L Engine stalls
  71. Oil in intake manifold 4.6 1993
  72. 98 Deville Concours Preformance Exhaust???
  73. Engine year compatibility
  74. Sucessful Northstar head gasket repair in a bottle
  75. PCM 09354896 code DCHJ
  76. 1997 4.6 eldorado up hill over heats
  77. fuel injector ohms
  78. 93 sts fuel rail removal tools
  79. Air ride compressor
  80. Overheating??
  81. Codes P0122 and P1122...
  82. Motor mount replaced!! WTF!!!!!
  83. 1996 Seville STS O2 Sensor REMOVAL. CAN"T GET TO IT
  84. 96 Seville where's the 02 Oxygen Sensor Location?? PLEASE HELP WONT PASS EMISSIONS!!!
  85. Long road trips good for the Northstar?
  86. headgaskets a 2nd time?
  87. 97 eldorado w/180,000 miles, should i upgrade to a preformance coil?
  88. 94 eldorado 4.6 - no codes - stumbling/chugging - about to give up
  89. Car not turning over
  90. Codes 340 and 1016 + Fixed A.I.R. with new coil cartridge?
  91. Transmission issue
  92. spark plugs
  93. Yearly engine oil changes really necessary?
  94. Overheating problem
  95. maybe you all know more
  96. What Oil For Northstar Cams and Flat Tappets?
  97. 93 seville sts fuel rail
  98. rear main seal
  99. 93-99 Camshaft picture needed
  100. Seville 03 shaking problems after tune-up.
  101. is it the head gasket again?
  102. Problems with starting the engine
  103. Adding an Electric water Pump 95 Northstar
  104. 1995 northstar for sale *LOCKED*
  105. After WOT Car smells strong of sulfur , rotten eggs
  106. Dexool Questions
  107. 2002 caddy deville
  108. Limp. Mode help
  109. Lifter starting to tap and needs replacing,
  110. Reg oil or Synthetic oil
  111. Coolant Shooting Out
  112. Random light miss during constant hwy cruising
  113. Which PCM??
  114. Fuel Injector O-Rings- Where go?
  115. air in cooling system
  116. Best oil and spark plugs for the northstar 4.6L
  117. Enginge doesn't crank
  118. Help!! Engine idling with hiccups
  119. Tach
  120. the day has come: headgasket
  121. '99 Seville STS
  122. What are the differences between 99> and 00< motors?
  123. Why do these motors break rods?
  124. pretty betty deville
  125. how reliable is northstars limp mode
  126. 1999 deville almost overheating
  127. 3.71 ever better with smaller wheels?
  128. Refrigerant pressure
  129. Minor Coolant Leak
  130. 93 sts misfires, stalls, very rough idle, looking for cause
  131. Any thoughts? Code P1350 p1375
  132. Injector spec for a Y2000 N*
  133. oil cooler
  134. TPS issue: Codes P0122, P1122. Help!
  135. Need Help Installing Air Filter ?
  136. 2002 Deville coolant leak
  137. Blew the head gaskets replacing the motor
  138. 1997 deville stalling at idle
  139. bad headgasket
  140. N* running Hot, Real Hot
  141. 99 deville oil pump
  142. 2001 Northstar AIR Valve
  143. Hydraulic valve-lash adjustor evaluation?
  144. 99 deville - RFA U1000 Help
  145. 91 GMC Sierra, with a Northstar?
  146. 96 96 Northstar Noise and Oil light issue With Video
  147. Speedomoter Reads wrong
  148. 2001 Deville Falls Dead
  149. 98 sls overheating
  150. EVAP Purge Solenoid
  151. P0171, P0174 After replaced Plenum
  152. 97 deville overheating??
  153. Batteries, voltage, power, and Optima
  154. Intake Manifold Removal Snag
  155. Smoke
  156. Come for a vacation while your HG's are replaced
  157. Exhaust manifold swap?
  158. Temp Indicator Question!
  159. Does Anyone Have Any Ideas???
  160. 2001 deville misfire
  161. '98 heads and cams on a 2000 block
  162. Fuel Rail / Fuel Injector Removal
  163. No Spark
  164. Puffs of smoke while revving in park
  165. Warping the Heads???
  166. A/c Discharge Hose
  167. Northstar Valve seals?
  168. Main studs?
  169. Notice of price increase on HG replacement
  170. Mystery Vacuum Hose
  171. Bad Thermostats or blown Head Gasket??? Help
  172. timeserts
  173. Northstar Engine belt
  174. Question about Time Serts?
  175. Iridium Spar Plugs
  176. Stock crank HP?
  177. How much better are the 00+ headgaskets.
  178. 97 ELDARADO w/ blown H/G
  179. allante 9 engine swap to a y engine
  180. Weird transmission behavior - any ideas?
  181. 3" Exhaust all the way back?
  182. FWD Sump swap for RWD?
  183. Early engine number needed
  184. Low oil pressure enigine stop no start
  185. Need Motor Mount R&R procedure in Tech Tips
  186. Crankshaft Position Sensor
  187. 2002 Eldog
  188. changing starter on 1998 deville--have you done it?
  189. 01 STS - Engine cutting out on accel
  190. Ram Air set-up on a 95 STS
  191. NorthStar painting touch up?
  192. Camchain timing
  193. 03 front (left) motor mount help
  194. Oil filter IArea
  195. I may need all forum members help, especially those who have ordered the stud kits.
  196. Do NS engines have an "air regulator"?
  197. Injector Alternatives
  198. Best year for a NorthStar??
  199. How to remove oil filter adapter???
  200. 95 N* intake issue
  201. How to lock flywheel without $150 tool?
  202. 2001 Deville DTS PO300 Random Misfires
  203. Cadillac STS Coolant, service stability system...
  204. anyone ever use Engine Ice Hi-Performance Coolant
  205. 1994 cadillac sts coolant loss
  206. What size of Time-Sert I have to buy ?
  207. 96 Eldo ETC I found the ABS computer cover...how do I get in it?? Do I force it?
  208. 96 Eldo engine sputters and stalls. P0300 and P1380 Engine Misfire.
  209. 01 STS Water pump grumbling noise
  210. Replacement Engine
  211. Coolant loss?
  212. what is the difference between the concourse and regular?
  213. '97 DeVille SES but no current codes?
  214. 95 sts hard shifting/chugging trans?
  215. combustion gas test turned yellow
  216. Northstar Died? no vacuum, no compression on cyl 6.
  217. Myrtle Beach Repair Shop
  218. High oil pressure
  219. Transmission help
  220. P0621
  221. 96 Seville AC system
  222. air box
  223. Engine almost stalls
  224. Help needed before I break something...
  225. Lean Cruise Tune
  226. 95 seville died and wont start
  227. would bad hg's cause the lower radiator hose not to get warm??
  228. Help..Which is #2 cylinder and other question
  229. cam sensor trigger
  230. getting p0741 code please help!!
  231. need help
  232. anyone know what this writing can mean?
  233. Primary timing chain sprocket wear?
  234. Still no short run power
  235. 96 concours crank prob
  236. On Vacation, just a bit of fun street racing....
  237. What is Normal Valve Train Noise?
  238. Fpr
  239. Need urgent help with spark plug wires
  240. PCM codes P0138 and P1139
  241. could this be a hg issue?
  242. barely running Northstar
  243. slightly overheating and coolant leak
  244. Help with TCC replacement parts list
  245. radiator fans not cutting on
  246. saying goodbye
  247. Transmission problems after HG fixed!!!
  248. 1996 STS Engine seized again what could be wrong?
  249. is there supposed to be something in the bottom radiator hoes?
  250. Bad head gasket without any symptoms???