: Northstar Engines and System Technical Discussion



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