: Northstar Engines and System Technical Discussion



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  1. headgaskets a 2nd time?
  2. 97 eldorado w/180,000 miles, should i upgrade to a preformance coil?
  3. 94 eldorado 4.6 - no codes - stumbling/chugging - about to give up
  4. Car not turning over
  5. Codes 340 and 1016 + Fixed A.I.R. with new coil cartridge?
  6. Transmission issue
  7. spark plugs
  8. Yearly engine oil changes really necessary?
  9. Overheating problem
  10. maybe you all know more
  11. What Oil For Northstar Cams and Flat Tappets?
  12. 93 seville sts fuel rail
  13. rear main seal
  14. 93-99 Camshaft picture needed
  15. Seville 03 shaking problems after tune-up.
  16. is it the head gasket again?
  17. Problems with starting the engine
  18. Adding an Electric water Pump 95 Northstar
  19. 1995 northstar for sale *LOCKED*
  20. After WOT Car smells strong of sulfur , rotten eggs
  21. Dexool Questions
  22. 2002 caddy deville
  23. Limp. Mode help
  24. Lifter starting to tap and needs replacing,
  25. Reg oil or Synthetic oil
  26. Coolant Shooting Out
  27. Random light miss during constant hwy cruising
  28. Which PCM??
  29. Fuel Injector O-Rings- Where go?
  30. air in cooling system
  31. Best oil and spark plugs for the northstar 4.6L
  32. Enginge doesn't crank
  33. Help!! Engine idling with hiccups
  34. Tach
  35. the day has come: headgasket
  36. '99 Seville STS
  37. What are the differences between 99> and 00< motors?
  38. Why do these motors break rods?
  39. pretty betty deville
  40. how reliable is northstars limp mode
  41. 1999 deville almost overheating
  42. 3.71 ever better with smaller wheels?
  43. Refrigerant pressure
  44. Minor Coolant Leak
  45. 93 sts misfires, stalls, very rough idle, looking for cause
  46. Any thoughts? Code P1350 p1375
  47. Injector spec for a Y2000 N*
  48. oil cooler
  49. TPS issue: Codes P0122, P1122. Help!
  50. Need Help Installing Air Filter ?
  51. 2002 Deville coolant leak
  52. Blew the head gaskets replacing the motor
  53. 1997 deville stalling at idle
  54. bad headgasket
  55. N* running Hot, Real Hot
  56. 99 deville oil pump
  57. 2001 Northstar AIR Valve
  58. Hydraulic valve-lash adjustor evaluation?
  59. 99 deville - RFA U1000 Help
  60. 91 GMC Sierra, with a Northstar?
  61. 96 96 Northstar Noise and Oil light issue With Video
  62. Speedomoter Reads wrong
  63. 2001 Deville Falls Dead
  64. 98 sls overheating
  65. EVAP Purge Solenoid
  66. P0171, P0174 After replaced Plenum
  67. 97 deville overheating??
  68. Batteries, voltage, power, and Optima
  69. Intake Manifold Removal Snag
  70. Smoke
  71. Come for a vacation while your HG's are replaced
  72. Exhaust manifold swap?
  73. Temp Indicator Question!
  74. Does Anyone Have Any Ideas???
  75. 2001 deville misfire
  76. '98 heads and cams on a 2000 block
  77. Fuel Rail / Fuel Injector Removal
  78. No Spark
  79. Puffs of smoke while revving in park
  80. Warping the Heads???
  81. A/c Discharge Hose
  82. Northstar Valve seals?
  83. Main studs?
  84. Notice of price increase on HG replacement
  85. Mystery Vacuum Hose
  86. Bad Thermostats or blown Head Gasket??? Help
  87. timeserts
  88. Northstar Engine belt
  89. Question about Time Serts?
  90. Iridium Spar Plugs
  91. Stock crank HP?
  92. How much better are the 00+ headgaskets.
  93. 97 ELDARADO w/ blown H/G
  94. allante 9 engine swap to a y engine
  95. Weird transmission behavior - any ideas?
  96. 3" Exhaust all the way back?
  97. FWD Sump swap for RWD?
  98. Early engine number needed
  99. Low oil pressure enigine stop no start
  100. Need Motor Mount R&R procedure in Tech Tips
  101. Crankshaft Position Sensor
  102. 2002 Eldog
  103. changing starter on 1998 deville--have you done it?
  104. 01 STS - Engine cutting out on accel
  105. Ram Air set-up on a 95 STS
  106. NorthStar painting touch up?
  107. Camchain timing
  108. 03 front (left) motor mount help
  109. Oil filter IArea
  110. I may need all forum members help, especially those who have ordered the stud kits.
  111. Do NS engines have an "air regulator"?
  112. Injector Alternatives
  113. Best year for a NorthStar??
  114. How to remove oil filter adapter???
  115. 95 N* intake issue
  116. How to lock flywheel without $150 tool?
  117. 2001 Deville DTS PO300 Random Misfires
  118. Cadillac STS Coolant, service stability system...
  119. anyone ever use Engine Ice Hi-Performance Coolant
  120. 1994 cadillac sts coolant loss
  121. What size of Time-Sert I have to buy ?
  122. 96 Eldo ETC I found the ABS computer cover...how do I get in it?? Do I force it?
  123. 96 Eldo engine sputters and stalls. P0300 and P1380 Engine Misfire.
  124. 01 STS Water pump grumbling noise
  125. Replacement Engine
  126. Coolant loss?
  127. what is the difference between the concourse and regular?
  128. '97 DeVille SES but no current codes?
  129. 95 sts hard shifting/chugging trans?
  130. combustion gas test turned yellow
  131. Northstar Died? no vacuum, no compression on cyl 6.
  132. Myrtle Beach Repair Shop
  133. High oil pressure
  134. Transmission help
  135. P0621
  136. 96 Seville AC system
  137. air box
  138. Engine almost stalls
  139. Help needed before I break something...
  140. Lean Cruise Tune
  141. 95 seville died and wont start
  142. would bad hg's cause the lower radiator hose not to get warm??
  143. Help..Which is #2 cylinder and other question
  144. cam sensor trigger
  145. getting p0741 code please help!!
  146. need help
  147. anyone know what this writing can mean?
  148. Primary timing chain sprocket wear?
  149. Still no short run power
  150. 96 concours crank prob
  151. On Vacation, just a bit of fun street racing....
  152. What is Normal Valve Train Noise?
  153. Fpr
  154. Need urgent help with spark plug wires
  155. PCM codes P0138 and P1139
  156. could this be a hg issue?
  157. barely running Northstar
  158. slightly overheating and coolant leak
  159. Help with TCC replacement parts list
  160. radiator fans not cutting on
  161. saying goodbye
  162. Transmission problems after HG fixed!!!
  163. 1996 STS Engine seized again what could be wrong?
  164. is there supposed to be something in the bottom radiator hoes?
  165. Bad head gasket without any symptoms???
  166. Crank Pulley removal/install
  167. how to check if the headgasket is in good shape before buying?
  168. newb question about tune-ups
  169. 1999 DeVille Coolant leak
  170. Coolant C/O Question
  171. HP rating from a sticker
  172. shelby northstar
  173. Wierd shaped bolt holding in IAC
  174. Check out my Headgasket Job in the car!!!!
  175. Crossover Manifold, Pipe Gasket Part Number
  176. Intake Manifold Cracked at Bolt Heads
  177. For all of us with the fluxuating speedometer / intermittent cruise control
  178. Transmission Strengths/Weaknesses
  179. looking for head gasket repair in tx
  180. Different Headgasket Question
  181. What is the difference between VIN 9 and VIN Y 4.6L Northstars ?
  182. I need to find someone closer than Canada to do my headgaskets !!
  183. Sold one of my '97 to my best friend, now it won't start
  184. 2001 STS vac leak at intake
  185. Overheats less in 3
  186. TERRIBLE Gas mileage "help"
  187. damm am i hard headed...over heating still
  188. still overheating need help...
  189. Found Coolant in the Valley. What could it be???
  190. Difficulty level on swapping a N* 4.6?
  191. Help with engine removal for STS
  192. Can 97 N* lifters be disassembled?
  193. front motor mount
  194. A/C delete pulley
  195. coolant leak
  196. Overpressurize relief valve boot
  197. 97 deville blown head gasket question
  198. The best preventative maintenance for my 97 N*?
  199. Service Stability System
  200. duramax1980
  201. 98 NS Brackets
  202. Intake Manifold Removal, '97 SLS
  203. Northstar Bracket
  204. my 1st post transmission problems i think
  205. Priming the oil pump on a northstar engine
  206. 2000 STS, N*interchangibility?
  207. Trying to find Intake Manifold Spacer
  208. PCM wiring without a complete car harness
  209. 99 ETC Weak hot restart?
  210. deville 2000 HG ???
  211. DHS would stall upon starting... would not idle
  212. Why Check the Oil When Hot?
  213. very little coolant circulation...i hope its not a head gasket
  214. '99 STS Oil Smell?
  215. Any good Northstar Mechanics in SoCal
  216. radiator drain valve
  217. New Studs to incorporate alignment pins
  218. 1997 Power Steering Pump Questions
  219. 2000 N* Head Gasket probability
  220. 00' STS N* Conversion ???
  221. 99 Deville/Headgasket Issue
  222. Misfire PC0300 Code
  223. Code P0741...Really confused.....Need help!!!
  224. Finally tore the motor apart
  225. 1997 sts stalled, Won't start
  226. HARD loud knock @ acceleration. help
  227. 93 Northstar Dies randomly. HELP!
  228. 95 SLS throttle body vacuum plug
  229. 2006 DTS engine issue
  230. 97 northstar balancer removal
  231. Advice on Northstar Transmission???
  232. oil in the antifreeze & overheating
  233. HG blown 375 days after a $3500 repair
  234. Northstar Coil Bank
  235. Engine wiring harness removal
  236. 97 seville sls coolant loss
  237. 98 deville engine question
  238. STS Blowing Out Oil But From WHERE?????
  239. '93 STS Oil cooler
  240. What kind of seal installer to use?
  241. Northstar head gasket replacement with warranty, Louisville KY - 1500 + parts
  242. how easy is changing the thermostat yourself
  243. Low speed stall
  244. Coolant Issue "00 STS"
  245. failed state inspection because of p0507
  246. Alternator questions....
  247. Bars Leaks Liquid Copper?
  248. which of these codes will cause my service engine light to be on?
  249. 97 Deville oil pan leak
  250. Please Help with long cranking time