: Northstar Engines and System Technical Discussion



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