: Northstar Engines and System Technical Discussion



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