: Northstar Engines and System Technical Discussion



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  1. Lifter starting to tap and needs replacing,
  2. Reg oil or Synthetic oil
  3. Coolant Shooting Out
  4. Random light miss during constant hwy cruising
  5. Which PCM??
  6. Fuel Injector O-Rings- Where go?
  7. air in cooling system
  8. Best oil and spark plugs for the northstar 4.6L
  9. Enginge doesn't crank
  10. Help!! Engine idling with hiccups
  11. Tach
  12. the day has come: headgasket
  13. '99 Seville STS
  14. What are the differences between 99> and 00< motors?
  15. Why do these motors break rods?
  16. pretty betty deville
  17. how reliable is northstars limp mode
  18. 1999 deville almost overheating
  19. 3.71 ever better with smaller wheels?
  20. Refrigerant pressure
  21. Minor Coolant Leak
  22. 93 sts misfires, stalls, very rough idle, looking for cause
  23. Any thoughts? Code P1350 p1375
  24. Injector spec for a Y2000 N*
  25. oil cooler
  26. TPS issue: Codes P0122, P1122. Help!
  27. Need Help Installing Air Filter ?
  28. 2002 Deville coolant leak
  29. Blew the head gaskets replacing the motor
  30. 1997 deville stalling at idle
  31. bad headgasket
  32. N* running Hot, Real Hot
  33. 99 deville oil pump
  34. 2001 Northstar AIR Valve
  35. Hydraulic valve-lash adjustor evaluation?
  36. 99 deville - RFA U1000 Help
  37. 91 GMC Sierra, with a Northstar?
  38. 96 96 Northstar Noise and Oil light issue With Video
  39. Speedomoter Reads wrong
  40. 2001 Deville Falls Dead
  41. 98 sls overheating
  42. EVAP Purge Solenoid
  43. P0171, P0174 After replaced Plenum
  44. 97 deville overheating??
  45. Batteries, voltage, power, and Optima
  46. Intake Manifold Removal Snag
  47. Smoke
  48. Come for a vacation while your HG's are replaced
  49. Exhaust manifold swap?
  50. Temp Indicator Question!
  51. Does Anyone Have Any Ideas???
  52. 2001 deville misfire
  53. '98 heads and cams on a 2000 block
  54. Fuel Rail / Fuel Injector Removal
  55. No Spark
  56. Puffs of smoke while revving in park
  57. Warping the Heads???
  58. A/c Discharge Hose
  59. Northstar Valve seals?
  60. Main studs?
  61. Notice of price increase on HG replacement
  62. Mystery Vacuum Hose
  63. Bad Thermostats or blown Head Gasket??? Help
  64. timeserts
  65. Northstar Engine belt
  66. Question about Time Serts?
  67. Iridium Spar Plugs
  68. Stock crank HP?
  69. How much better are the 00+ headgaskets.
  70. 97 ELDARADO w/ blown H/G
  71. allante 9 engine swap to a y engine
  72. Weird transmission behavior - any ideas?
  73. 3" Exhaust all the way back?
  74. FWD Sump swap for RWD?
  75. Early engine number needed
  76. Low oil pressure enigine stop no start
  77. Need Motor Mount R&R procedure in Tech Tips
  78. Crankshaft Position Sensor
  79. 2002 Eldog
  80. changing starter on 1998 deville--have you done it?
  81. 01 STS - Engine cutting out on accel
  82. Ram Air set-up on a 95 STS
  83. NorthStar painting touch up?
  84. Camchain timing
  85. 03 front (left) motor mount help
  86. Oil filter IArea
  87. I may need all forum members help, especially those who have ordered the stud kits.
  88. Do NS engines have an "air regulator"?
  89. Injector Alternatives
  90. Best year for a NorthStar??
  91. How to remove oil filter adapter???
  92. 95 N* intake issue
  93. How to lock flywheel without $150 tool?
  94. 2001 Deville DTS PO300 Random Misfires
  95. Cadillac STS Coolant, service stability system...
  96. anyone ever use Engine Ice Hi-Performance Coolant
  97. 1994 cadillac sts coolant loss
  98. What size of Time-Sert I have to buy ?
  99. 96 Eldo ETC I found the ABS computer cover...how do I get in it?? Do I force it?
  100. 96 Eldo engine sputters and stalls. P0300 and P1380 Engine Misfire.
  101. 01 STS Water pump grumbling noise
  102. Replacement Engine
  103. Coolant loss?
  104. what is the difference between the concourse and regular?
  105. '97 DeVille SES but no current codes?
  106. 95 sts hard shifting/chugging trans?
  107. combustion gas test turned yellow
  108. Northstar Died? no vacuum, no compression on cyl 6.
  109. Myrtle Beach Repair Shop
  110. High oil pressure
  111. Transmission help
  112. P0621
  113. 96 Seville AC system
  114. air box
  115. Engine almost stalls
  116. Help needed before I break something...
  117. Lean Cruise Tune
  118. 95 seville died and wont start
  119. would bad hg's cause the lower radiator hose not to get warm??
  120. Help..Which is #2 cylinder and other question
  121. cam sensor trigger
  122. getting p0741 code please help!!
  123. need help
  124. anyone know what this writing can mean?
  125. Primary timing chain sprocket wear?
  126. Still no short run power
  127. 96 concours crank prob
  128. On Vacation, just a bit of fun street racing....
  129. What is Normal Valve Train Noise?
  130. Fpr
  131. Need urgent help with spark plug wires
  132. PCM codes P0138 and P1139
  133. could this be a hg issue?
  134. barely running Northstar
  135. slightly overheating and coolant leak
  136. Help with TCC replacement parts list
  137. radiator fans not cutting on
  138. saying goodbye
  139. Transmission problems after HG fixed!!!
  140. 1996 STS Engine seized again what could be wrong?
  141. is there supposed to be something in the bottom radiator hoes?
  142. Bad head gasket without any symptoms???
  143. Crank Pulley removal/install
  144. how to check if the headgasket is in good shape before buying?
  145. newb question about tune-ups
  146. 1999 DeVille Coolant leak
  147. Coolant C/O Question
  148. HP rating from a sticker
  149. shelby northstar
  150. Wierd shaped bolt holding in IAC
  151. Check out my Headgasket Job in the car!!!!
  152. Crossover Manifold, Pipe Gasket Part Number
  153. Intake Manifold Cracked at Bolt Heads
  154. For all of us with the fluxuating speedometer / intermittent cruise control
  155. Transmission Strengths/Weaknesses
  156. looking for head gasket repair in tx
  157. Different Headgasket Question
  158. What is the difference between VIN 9 and VIN Y 4.6L Northstars ?
  159. I need to find someone closer than Canada to do my headgaskets !!
  160. Sold one of my '97 to my best friend, now it won't start
  161. 2001 STS vac leak at intake
  162. Overheats less in 3
  163. TERRIBLE Gas mileage "help"
  164. damm am i hard headed...over heating still
  165. still overheating need help...
  166. Found Coolant in the Valley. What could it be???
  167. Difficulty level on swapping a N* 4.6?
  168. Help with engine removal for STS
  169. Can 97 N* lifters be disassembled?
  170. front motor mount
  171. A/C delete pulley
  172. coolant leak
  173. Overpressurize relief valve boot
  174. 97 deville blown head gasket question
  175. The best preventative maintenance for my 97 N*?
  176. Service Stability System
  177. duramax1980
  178. 98 NS Brackets
  179. Intake Manifold Removal, '97 SLS
  180. Northstar Bracket
  181. my 1st post transmission problems i think
  182. Priming the oil pump on a northstar engine
  183. 2000 STS, N*interchangibility?
  184. Trying to find Intake Manifold Spacer
  185. PCM wiring without a complete car harness
  186. 99 ETC Weak hot restart?
  187. deville 2000 HG ???
  188. DHS would stall upon starting... would not idle
  189. Why Check the Oil When Hot?
  190. very little coolant circulation...i hope its not a head gasket
  191. '99 STS Oil Smell?
  192. Any good Northstar Mechanics in SoCal
  193. radiator drain valve
  194. New Studs to incorporate alignment pins
  195. 1997 Power Steering Pump Questions
  196. 2000 N* Head Gasket probability
  197. 00' STS N* Conversion ???
  198. 99 Deville/Headgasket Issue
  199. Misfire PC0300 Code
  200. Code P0741...Really confused.....Need help!!!
  201. Finally tore the motor apart
  202. 1997 sts stalled, Won't start
  203. HARD loud knock @ acceleration. help
  204. 93 Northstar Dies randomly. HELP!
  205. 95 SLS throttle body vacuum plug
  206. 2006 DTS engine issue
  207. 97 northstar balancer removal
  208. Advice on Northstar Transmission???
  209. oil in the antifreeze & overheating
  210. HG blown 375 days after a $3500 repair
  211. Northstar Coil Bank
  212. Engine wiring harness removal
  213. 97 seville sls coolant loss
  214. 98 deville engine question
  215. STS Blowing Out Oil But From WHERE?????
  216. '93 STS Oil cooler
  217. What kind of seal installer to use?
  218. Northstar head gasket replacement with warranty, Louisville KY - 1500 + parts
  219. how easy is changing the thermostat yourself
  220. Low speed stall
  221. Coolant Issue "00 STS"
  222. failed state inspection because of p0507
  223. Alternator questions....
  224. Bars Leaks Liquid Copper?
  225. which of these codes will cause my service engine light to be on?
  226. 97 Deville oil pan leak
  227. Please Help with long cranking time
  228. high idle
  229. Aftermarket Intake for '99 DeVille base model
  230. 02 Deville rough idle & codes
  231. 1998 Eldorado Head Gasket - 2nd time in 375-days
  232. Started to hear an intermittent grinding noise
  233. $788 To fix P0410 Code
  234. Car Stalled, won't restart
  235. Smell Coolant after Driving??
  236. 1994 STS quit in driveway, seems battery went dead.
  237. 2000 seville sts misfire
  238. Idle Air Control Valve (IAC)
  239. 94 sts intake cover gasket
  240. HG Budget for 97 STS
  241. Help.. 2000 dts tranny blown
  242. 1999 Seville SLS hard start P1350/P1375
  243. Crap!!! Coolant leak! what do I do!?!?!?
  244. 97 Northstar Oil leak
  245. 94 Eldorado Idle problem
  246. Best service manual (rebuilding)
  247. low oil pressure indictator
  248. Any idea what I should pay to get the evap solenoid replaced ?
  249. Thinking of rebuilding motor... questions..
  250. 2001 Deville getting hot