: Northstar Engines and System Technical Discussion



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