: Northstar Engines and System Technical Discussion



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