: Northstar Engines and System Technical Discussion



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