: Northstar Engines and System Technical Discussion



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  1. how reliable is northstars limp mode
  2. 1999 deville almost overheating
  3. 3.71 ever better with smaller wheels?
  4. Refrigerant pressure
  5. Minor Coolant Leak
  6. 93 sts misfires, stalls, very rough idle, looking for cause
  7. Any thoughts? Code P1350 p1375
  8. Injector spec for a Y2000 N*
  9. oil cooler
  10. TPS issue: Codes P0122, P1122. Help!
  11. Need Help Installing Air Filter ?
  12. 2002 Deville coolant leak
  13. Blew the head gaskets replacing the motor
  14. 1997 deville stalling at idle
  15. bad headgasket
  16. N* running Hot, Real Hot
  17. 99 deville oil pump
  18. 2001 Northstar AIR Valve
  19. Hydraulic valve-lash adjustor evaluation?
  20. 99 deville - RFA U1000 Help
  21. 91 GMC Sierra, with a Northstar?
  22. 96 96 Northstar Noise and Oil light issue With Video
  23. Speedomoter Reads wrong
  24. 2001 Deville Falls Dead
  25. 98 sls overheating
  26. EVAP Purge Solenoid
  27. P0171, P0174 After replaced Plenum
  28. 97 deville overheating??
  29. Batteries, voltage, power, and Optima
  30. Intake Manifold Removal Snag
  31. Smoke
  32. Come for a vacation while your HG's are replaced
  33. Exhaust manifold swap?
  34. Temp Indicator Question!
  35. Does Anyone Have Any Ideas???
  36. 2001 deville misfire
  37. '98 heads and cams on a 2000 block
  38. Fuel Rail / Fuel Injector Removal
  39. No Spark
  40. Puffs of smoke while revving in park
  41. Warping the Heads???
  42. A/c Discharge Hose
  43. Northstar Valve seals?
  44. Main studs?
  45. Notice of price increase on HG replacement
  46. Mystery Vacuum Hose
  47. Bad Thermostats or blown Head Gasket??? Help
  48. timeserts
  49. Northstar Engine belt
  50. Question about Time Serts?
  51. Iridium Spar Plugs
  52. Stock crank HP?
  53. How much better are the 00+ headgaskets.
  54. 97 ELDARADO w/ blown H/G
  55. allante 9 engine swap to a y engine
  56. Weird transmission behavior - any ideas?
  57. 3" Exhaust all the way back?
  58. FWD Sump swap for RWD?
  59. Early engine number needed
  60. Low oil pressure enigine stop no start
  61. Need Motor Mount R&R procedure in Tech Tips
  62. Crankshaft Position Sensor
  63. 2002 Eldog
  64. changing starter on 1998 deville--have you done it?
  65. 01 STS - Engine cutting out on accel
  66. Ram Air set-up on a 95 STS
  67. NorthStar painting touch up?
  68. Camchain timing
  69. 03 front (left) motor mount help
  70. Oil filter IArea
  71. I may need all forum members help, especially those who have ordered the stud kits.
  72. Do NS engines have an "air regulator"?
  73. Injector Alternatives
  74. Best year for a NorthStar??
  75. How to remove oil filter adapter???
  76. 95 N* intake issue
  77. How to lock flywheel without $150 tool?
  78. 2001 Deville DTS PO300 Random Misfires
  79. Cadillac STS Coolant, service stability system...
  80. anyone ever use Engine Ice Hi-Performance Coolant
  81. 1994 cadillac sts coolant loss
  82. What size of Time-Sert I have to buy ?
  83. 96 Eldo ETC I found the ABS computer cover...how do I get in it?? Do I force it?
  84. 96 Eldo engine sputters and stalls. P0300 and P1380 Engine Misfire.
  85. 01 STS Water pump grumbling noise
  86. Replacement Engine
  87. Coolant loss?
  88. what is the difference between the concourse and regular?
  89. '97 DeVille SES but no current codes?
  90. 95 sts hard shifting/chugging trans?
  91. combustion gas test turned yellow
  92. Northstar Died? no vacuum, no compression on cyl 6.
  93. Myrtle Beach Repair Shop
  94. High oil pressure
  95. Transmission help
  96. P0621
  97. 96 Seville AC system
  98. air box
  99. Engine almost stalls
  100. Help needed before I break something...
  101. Lean Cruise Tune
  102. 95 seville died and wont start
  103. would bad hg's cause the lower radiator hose not to get warm??
  104. Help..Which is #2 cylinder and other question
  105. cam sensor trigger
  106. getting p0741 code please help!!
  107. need help
  108. anyone know what this writing can mean?
  109. Primary timing chain sprocket wear?
  110. Still no short run power
  111. 96 concours crank prob
  112. On Vacation, just a bit of fun street racing....
  113. What is Normal Valve Train Noise?
  114. Fpr
  115. Need urgent help with spark plug wires
  116. PCM codes P0138 and P1139
  117. could this be a hg issue?
  118. barely running Northstar
  119. slightly overheating and coolant leak
  120. Help with TCC replacement parts list
  121. radiator fans not cutting on
  122. saying goodbye
  123. Transmission problems after HG fixed!!!
  124. 1996 STS Engine seized again what could be wrong?
  125. is there supposed to be something in the bottom radiator hoes?
  126. Bad head gasket without any symptoms???
  127. Crank Pulley removal/install
  128. how to check if the headgasket is in good shape before buying?
  129. newb question about tune-ups
  130. 1999 DeVille Coolant leak
  131. Coolant C/O Question
  132. HP rating from a sticker
  133. shelby northstar
  134. Wierd shaped bolt holding in IAC
  135. Check out my Headgasket Job in the car!!!!
  136. Crossover Manifold, Pipe Gasket Part Number
  137. Intake Manifold Cracked at Bolt Heads
  138. For all of us with the fluxuating speedometer / intermittent cruise control
  139. Transmission Strengths/Weaknesses
  140. looking for head gasket repair in tx
  141. Different Headgasket Question
  142. What is the difference between VIN 9 and VIN Y 4.6L Northstars ?
  143. I need to find someone closer than Canada to do my headgaskets !!
  144. Sold one of my '97 to my best friend, now it won't start
  145. 2001 STS vac leak at intake
  146. Overheats less in 3
  147. TERRIBLE Gas mileage "help"
  148. damm am i hard headed...over heating still
  149. still overheating need help...
  150. Found Coolant in the Valley. What could it be???
  151. Difficulty level on swapping a N* 4.6?
  152. Help with engine removal for STS
  153. Can 97 N* lifters be disassembled?
  154. front motor mount
  155. A/C delete pulley
  156. coolant leak
  157. Overpressurize relief valve boot
  158. 97 deville blown head gasket question
  159. The best preventative maintenance for my 97 N*?
  160. Service Stability System
  161. duramax1980
  162. 98 NS Brackets
  163. Intake Manifold Removal, '97 SLS
  164. Northstar Bracket
  165. my 1st post transmission problems i think
  166. Priming the oil pump on a northstar engine
  167. 2000 STS, N*interchangibility?
  168. Trying to find Intake Manifold Spacer
  169. PCM wiring without a complete car harness
  170. 99 ETC Weak hot restart?
  171. deville 2000 HG ???
  172. DHS would stall upon starting... would not idle
  173. Why Check the Oil When Hot?
  174. very little coolant circulation...i hope its not a head gasket
  175. '99 STS Oil Smell?
  176. Any good Northstar Mechanics in SoCal
  177. radiator drain valve
  178. New Studs to incorporate alignment pins
  179. 1997 Power Steering Pump Questions
  180. 2000 N* Head Gasket probability
  181. 00' STS N* Conversion ???
  182. 99 Deville/Headgasket Issue
  183. Misfire PC0300 Code
  184. Code P0741...Really confused.....Need help!!!
  185. Finally tore the motor apart
  186. 1997 sts stalled, Won't start
  187. HARD loud knock @ acceleration. help
  188. 93 Northstar Dies randomly. HELP!
  189. 95 SLS throttle body vacuum plug
  190. 2006 DTS engine issue
  191. 97 northstar balancer removal
  192. Advice on Northstar Transmission???
  193. oil in the antifreeze & overheating
  194. HG blown 375 days after a $3500 repair
  195. Northstar Coil Bank
  196. Engine wiring harness removal
  197. 97 seville sls coolant loss
  198. 98 deville engine question
  199. STS Blowing Out Oil But From WHERE?????
  200. '93 STS Oil cooler
  201. What kind of seal installer to use?
  202. Northstar head gasket replacement with warranty, Louisville KY - 1500 + parts
  203. how easy is changing the thermostat yourself
  204. Low speed stall
  205. Coolant Issue "00 STS"
  206. failed state inspection because of p0507
  207. Alternator questions....
  208. Bars Leaks Liquid Copper?
  209. which of these codes will cause my service engine light to be on?
  210. 97 Deville oil pan leak
  211. Please Help with long cranking time
  212. high idle
  213. Aftermarket Intake for '99 DeVille base model
  214. 02 Deville rough idle & codes
  215. 1998 Eldorado Head Gasket - 2nd time in 375-days
  216. Started to hear an intermittent grinding noise
  217. $788 To fix P0410 Code
  218. Car Stalled, won't restart
  219. Smell Coolant after Driving??
  220. 1994 STS quit in driveway, seems battery went dead.
  221. 2000 seville sts misfire
  222. Idle Air Control Valve (IAC)
  223. 94 sts intake cover gasket
  224. HG Budget for 97 STS
  225. Help.. 2000 dts tranny blown
  226. 1999 Seville SLS hard start P1350/P1375
  227. Crap!!! Coolant leak! what do I do!?!?!?
  228. 97 Northstar Oil leak
  229. 94 Eldorado Idle problem
  230. Best service manual (rebuilding)
  231. low oil pressure indictator
  232. Any idea what I should pay to get the evap solenoid replaced ?
  233. Thinking of rebuilding motor... questions..
  234. 2001 Deville getting hot
  235. Oil pressure
  236. Cooling system tablets after HG job
  237. HG Jobs for all, anywhere in Canada or USA in my new shop
  238. where to get headgasket job done?
  239. Northstar Engine Gets Gummy?
  240. STS low power
  241. Northstar engine miss
  242. 2002 Deville P3008 code
  243. Real Performance Parts for the L37
  244. HELP outta town with tranny issues
  245. Cooling fans and hard driving- temp spikes
  246. Convert 98 SLS motor into STS motor?
  247. NO Codes but stalls...
  248. Stand-alone Northstar engine/trans for swap
  249. 4T80E solenoid shift replacement
  250. N* Swap with Factory ECM and avoiding DTC's