: Northstar Engines and System Technical Discussion



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