: Northstar Engines and System Technical Discussion



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  1. P0621
  2. 96 Seville AC system
  3. air box
  4. Engine almost stalls
  5. Help needed before I break something...
  6. Lean Cruise Tune
  7. 95 seville died and wont start
  8. would bad hg's cause the lower radiator hose not to get warm??
  9. Help..Which is #2 cylinder and other question
  10. cam sensor trigger
  11. getting p0741 code please help!!
  12. need help
  13. anyone know what this writing can mean?
  14. Primary timing chain sprocket wear?
  15. Still no short run power
  16. 96 concours crank prob
  17. On Vacation, just a bit of fun street racing....
  18. What is Normal Valve Train Noise?
  19. Fpr
  20. Need urgent help with spark plug wires
  21. PCM codes P0138 and P1139
  22. could this be a hg issue?
  23. barely running Northstar
  24. slightly overheating and coolant leak
  25. Help with TCC replacement parts list
  26. radiator fans not cutting on
  27. saying goodbye
  28. Transmission problems after HG fixed!!!
  29. 1996 STS Engine seized again what could be wrong?
  30. is there supposed to be something in the bottom radiator hoes?
  31. Bad head gasket without any symptoms???
  32. Crank Pulley removal/install
  33. how to check if the headgasket is in good shape before buying?
  34. newb question about tune-ups
  35. 1999 DeVille Coolant leak
  36. Coolant C/O Question
  37. HP rating from a sticker
  38. shelby northstar
  39. Wierd shaped bolt holding in IAC
  40. Check out my Headgasket Job in the car!!!!
  41. Crossover Manifold, Pipe Gasket Part Number
  42. Intake Manifold Cracked at Bolt Heads
  43. For all of us with the fluxuating speedometer / intermittent cruise control
  44. Transmission Strengths/Weaknesses
  45. looking for head gasket repair in tx
  46. Different Headgasket Question
  47. What is the difference between VIN 9 and VIN Y 4.6L Northstars ?
  48. I need to find someone closer than Canada to do my headgaskets !!
  49. Sold one of my '97 to my best friend, now it won't start
  50. 2001 STS vac leak at intake
  51. Overheats less in 3
  52. TERRIBLE Gas mileage "help"
  53. damm am i hard headed...over heating still
  54. still overheating need help...
  55. Found Coolant in the Valley. What could it be???
  56. Difficulty level on swapping a N* 4.6?
  57. Help with engine removal for STS
  58. Can 97 N* lifters be disassembled?
  59. front motor mount
  60. A/C delete pulley
  61. coolant leak
  62. Overpressurize relief valve boot
  63. 97 deville blown head gasket question
  64. The best preventative maintenance for my 97 N*?
  65. Service Stability System
  66. duramax1980
  67. 98 NS Brackets
  68. Intake Manifold Removal, '97 SLS
  69. Northstar Bracket
  70. my 1st post transmission problems i think
  71. Priming the oil pump on a northstar engine
  72. 2000 STS, N*interchangibility?
  73. Trying to find Intake Manifold Spacer
  74. PCM wiring without a complete car harness
  75. 99 ETC Weak hot restart?
  76. deville 2000 HG ???
  77. DHS would stall upon starting... would not idle
  78. Why Check the Oil When Hot?
  79. very little coolant circulation...i hope its not a head gasket
  80. '99 STS Oil Smell?
  81. why didnt gm recall northstar engines for head gasket?
  82. Any good Northstar Mechanics in SoCal
  83. radiator drain valve
  84. New Studs to incorporate alignment pins
  85. 1997 Power Steering Pump Questions
  86. 2000 N* Head Gasket probability
  87. 00' STS N* Conversion ???
  88. 99 Deville/Headgasket Issue
  89. Misfire PC0300 Code
  90. Code P0741...Really confused.....Need help!!!
  91. Finally tore the motor apart
  92. 1997 sts stalled, Won't start
  93. HARD loud knock @ acceleration. help
  94. 93 Northstar Dies randomly. HELP!
  95. 95 SLS throttle body vacuum plug
  96. 2006 DTS engine issue
  97. 97 northstar balancer removal
  98. Advice on Northstar Transmission???
  99. oil in the antifreeze & overheating
  100. HG blown 375 days after a $3500 repair
  101. Northstar Coil Bank
  102. Engine wiring harness removal
  103. 97 seville sls coolant loss
  104. 98 deville engine question
  105. STS Blowing Out Oil But From WHERE?????
  106. '93 STS Oil cooler
  107. What kind of seal installer to use?
  108. Northstar head gasket replacement with warranty, Louisville KY - 1500 + parts
  109. how easy is changing the thermostat yourself
  110. Low speed stall
  111. Coolant Issue "00 STS"
  112. failed state inspection because of p0507
  113. Alternator questions....
  114. Bars Leaks Liquid Copper?
  115. which of these codes will cause my service engine light to be on?
  116. 97 Deville oil pan leak
  117. Please Help with long cranking time
  118. high idle
  119. Aftermarket Intake for '99 DeVille base model
  120. 02 Deville rough idle & codes
  121. 1998 Eldorado Head Gasket - 2nd time in 375-days
  122. Started to hear an intermittent grinding noise
  123. $788 To fix P0410 Code
  124. Car Stalled, won't restart
  125. Smell Coolant after Driving??
  126. 1994 STS quit in driveway, seems battery went dead.
  127. 2000 seville sts misfire
  128. Idle Air Control Valve (IAC)
  129. 94 sts intake cover gasket
  130. HG Budget for 97 STS
  131. Help.. 2000 dts tranny blown
  132. 1999 Seville SLS hard start P1350/P1375
  133. Crap!!! Coolant leak! what do I do!?!?!?
  134. 97 Northstar Oil leak
  135. 94 Eldorado Idle problem
  136. Best service manual (rebuilding)
  137. low oil pressure indictator
  138. Any idea what I should pay to get the evap solenoid replaced ?
  139. Thinking of rebuilding motor... questions..
  140. 2001 Deville getting hot
  141. Oil pressure
  142. Cooling system tablets after HG job
  143. HG Jobs for all, anywhere in Canada or USA in my new shop
  144. where to get headgasket job done?
  145. Northstar Engine Gets Gummy?
  146. STS low power
  147. Northstar engine miss
  148. 2002 Deville P3008 code
  149. Real Performance Parts for the L37
  150. HELP outta town with tranny issues
  151. Cooling fans and hard driving- temp spikes
  152. Convert 98 SLS motor into STS motor?
  153. NO Codes but stalls...
  154. Stand-alone Northstar engine/trans for swap
  155. 4T80E solenoid shift replacement
  156. N* Swap with Factory ECM and avoiding DTC's
  157. Vin lookup for engine history
  158. 1999 STS Traction Control off......Unable to turn it on.
  159. 98 deville no fan / tech 2 commanded fan on
  160. 1999 Cadillac Seville OVERHEATING :(
  161. Any differences in an Export N* Engine and a Domestic One?
  162. To much Antifreez
  163. Synthetic or Regular Oil in 08 Escalade ESV?
  164. Stalling when wet
  165. 1998 STS : Code v
  166. 02 Deville plenum question
  167. MSD Timing Controller - Question for AJ
  168. Cranshaft Main Bolts
  169. Rear Main Seal Install
  170. Where to find coolant test?
  171. Can I put a 2001 Northstar in a 1997 Eldorado?
  172. Major coolant leak
  173. I think i'm ready
  174. what to look for buying a used northstar powered car
  175. Happy ending to overheating problem
  176. 2000 sts
  177. Fully Polished Aluminum Strut Tower Brace for 98+Seville and 00+ Deville
  178. o2 sensor thread repair
  179. Bypass AC pump 94 Eldorado
  180. Northstar oil leak, main bolts
  181. 1993 Eldorado Northstar running rough
  182. Limp Mode?
  183. STS N* Rough Idle/Miss at Startup
  184. northstar aurora alternator
  185. Swap 4.9l v8 and 4.6l v8 northstar
  186. '99 STS stuck water water pump
  187. Water pump drive pulley
  188. heater on bench 1?
  189. Hello all
  190. wide engine temp swing
  191. Oil pan gasket
  192. I allmost died in my sts !!!!!, P065 drives itself
  193. 1993 seville STS
  194. cooling fan electrical diagram
  195. Fuel Injectors Revisited
  196. head gasket replacement in louisville kentucky area
  197. Cam Replacement in Car
  198. Northstar block #'s info needed on a used engine.
  199. oil filter for northstar
  200. 2000 sls overheating
  201. SLS overheating help? please?
  202. testing for bad HG
  203. 94 STS Coolant leak between block and flywheel
  204. Valve cover gaskets
  205. Hitting rev limiter in idle after startup
  206. Bad news Very Bad news
  207. EGR symptoms
  208. fuel pumps
  209. manifold pressure sensor or mat sensor
  210. Transaxle interchange
  211. TSB for Oil Consumption
  212. N*** PCM hacking Help
  213. Increasing fuel efficiency
  214. 94 Eldorado 4.6 High Idle
  215. photo shop help
  216. high engine rpm at start up
  217. Is it possible to have digital temperature display on 2002 deville ?
  218. 99 STS metallic ticking noise from valve area
  219. Bonneville GXP 1/4 mile times
  220. Time Serts, Norm's, SureGrip Stud Kit??????
  221. p080
  222. 2004 Deville 275hp... a good buy?
  223. I would like to 'update' the Performance Parts Mega-Post
  224. Questions for Ranger and Submariner409
  225. Cleaning Engine what do i cover?
  226. Any Ideas? No codes, backfire, sputter & parking brake get stuck
  227. dropping cradle: what would you replace preemptively
  228. HG and Timesert in car
  229. 1993 Cadillac Seville STS 4.6l engine bog
  230. Shoud i replace input speed sensor on 2002 deville 140k
  231. Go with studs and get warranty on a DIY HG job
  232. 2002 deville HEAD JOB and MORE --PLEASE HELP
  233. Help. 99 sts dash clicking?
  234. The ever present "miss"
  235. new engine ...?
  236. Code P0603
  237. Fire!!! Eh, not so bad..
  238. Fuel pump removal pictures
  239. No more HG jobs. I'm finished.
  240. More problems after a HG job- or are they?
  241. 02 dts high idle prob
  242. What 2 Do About GM's OHC V8 Engine.... How about the Mainstreaming of the 4.4L SC NS?
  243. 94-99 vs. 2000+ N* Oil issues
  244. RWD Northstar
  245. Running a 2005 N* on a 2006 N* PCM
  246. intake blow off flap
  247. PO155 (HO2S) Code
  248. 95 devile no heat on driver side help
  249. Clever stuff...I think?
  250. trading up