: Northstar Engines and System Technical Discussion



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  1. 95 STS corrosion
  2. One Dead Deville 1999
  3. 94' SLS t073 erratic idle & stalling
  4. 2000sts trouble codes
  5. check engine soon????????
  6. 99 STS Gas pedal sticking
  7. 94 Northstar question
  8. BG44k
  9. (Pressing gas) CLUNK.. What the heck?
  10. Fuel Additives
  11. Loud Pop
  12. help with some error codes 96 etc.
  13. Increasing Displacement
  14. 4T80E gearing
  15. Holy hell, i tried that Lucus oil additive....
  16. "Stop Engine Low Oil Pressure"
  17. Gas MPG low? and electrical question
  18. need help again, new code
  19. Failed Emission - high HC
  20. Stalling/Starting Problem
  21. 91 vw golf with northstar!!must see
  22. Looking for a source of Northstar Engines
  23. egr
  24. Starter Enable Relay!! Found it, Cleaned it, Fixed it.!!!
  25. Northstar head compatibility
  26. 96 Oil Leak
  27. Parts swapping
  28. Is there a GM TSB for the use of Time-Serts?
  29. 2000 Sts Exhaust
  30. 97 STS eliminate the converter?
  31. Exhaust question
  32. Limp yo-self home, N*!
  33. Trans. Problem?
  34. where is the starter relay, 1993 sts northstar
  35. Transmission flush?
  36. Forum Opinion on 2000 STS
  37. PLEASE!!! -4 and under, lights on,no power to starter!!
  38. dtc pcm 0139 now what?
  39. 1995 sts,manifold cover
  40. Check Coolant Level Message & temp. question
  41. overdrive or drive
  42. Code in history ? P039
  43. Dtc P0101
  44. How to pull engine codes and where to find?
  45. Performance mods!
  46. Diry relief valve causing loss of oil pressure?
  47. 95 STS Water Pump Question.
  48. NOLOGY wires for northstar motors
  49. northstar question
  50. Code SO61? PO83?
  51. Clicking noise
  52. Huge muffler comparison
  53. Fixed the egr valve myself
  54. Does Northstar turn off cylinders like 4-6-8?
  55. Fuel Additives
  56. Problems with N* arise
  57. Diagnostic Code?
  58. Went to a mechanic today on EGR
  59. Thoughts, opinions, and suggestions on carbon deposits.
  60. Year 2000 Northstar 32V engine oil consumption problem?
  61. Spark Plugs
  62. EGR Valve , need help locating it
  63. filling coolant system after flush
  64. Tornado Fuel Saver
  65. EGR valve install question
  66. Where are my O2 Sensors?
  67. PCM? What now
  68. My timesert kit on ebay, reserve at $160!
  69. No speedo!!!
  70. Carbon buildup/ fuel additives/ opinions???
  71. 95 sts starting problems
  72. Should I fix or sell?
  73. could be 1 or 2 things idler pulley or water pump plz help
  74. Northstar driven 94 Pontiac Grand Prix GTP RWD
  75. Leaking Water Pump 1998 Deville
  76. Smoking Northstar!
  77. Engine rebuilt?
  78. Northstar Squealing noise
  79. Oil change
  80. performance exhaust
  81. '94 Concours Hard To Start
  82. P0113/P1111 - then what ?
  83. whast should a 94 north start run temp wise
  84. Changing Serpentine Belt
  85. Custom Intake
  86. Maintaining Northstar Engines *A must Read*
  87. Headgasket replacement finished
  88. N* engine mount bushings...what happens if...
  89. How to remove the belt tensioner?
  90. New Cadillac owner
  91. TO 73 code??????
  92. What are my options?
  93. 2000 DeVille - Stalling
  94. Temp Sensor
  95. Misfirin' 98 DeVille. How much $ is DTC p0300,603,1381 cost?
  96. Temperature sensor - another problem...
  97. 4 Questions / 93 STS w/ 4.6
  98. Lights flicker?
  99. lights that dim when...
  100. Glitch In 97 Concours
  101. alternator replacement part deux
  102. P086 code on 94 STS keep sme from getting it smogged
  103. Calling out 156mph
  104. Cadillac dealer...
  105. ShadowLvr400......
  106. 4.6 northstar / engine, Trans swap ?
  107. TRANSMISSION/Torque convertor problems??? HELP!!!
  108. Nitrous
  109. More on coolant issues....Long post alert!
  110. '95 STS Clearing on-board diagnostic codes
  111. Quick and Simple Question
  112. 2000 STS Oil Life
  113. Calling all North* Specialist....Changing out the Alternator
  114. Service Engine Soon? What's that Noise?
  115. Dashboard mayhem
  116. weird?
  117. Need Technical Help for Engine swaping...
  118. Anyone have an opinion on electric superchargers?
  119. Will '95 coil pack, intake or exhaust fit my '93 N*?
  120. northstar performance upgrades
  121. Exhaust manifold ?
  122. Please help! Considering a '94 Deville Concours N'star
  123. New member, trying to find out if oil burning is ok!
  124. Repair Advice Needed in Orange County, CA
  125. P030 Code on '93 STS
  126. "no battery charge"
  127. "check oil level"
  128. '95 STS showing SES code: P085
  129. Which o2 sensor??
  130. Code PO24-VSS Signal To TCC-Where is It Located At?
  131. TPS - Problems
  132. thermal meltdown of n* engine ?
  133. Are Gremlins pinching my fuel line? ARGHHH!!
  134. 2002 engine into 97 Deville?
  135. Tune up?
  136. Freeze plugs ( So called )
  137. 94 Concourse Shifting Problem
  138. I smell gas in my 95 concours
  139. message
  140. update on my 97 concours
  141. NA power out of a North*?
  142. 2002 what does loss of dim communication?
  143. Turbos put back?
  144. Leaking Heater Core in 1999 DeVelle
  145. Overheating: Am I screwed?
  146. Bolting filter right on the motor
  147. 94 Eldorado Oil level sensor problem
  148. o2 sensors!!!!!! argggggggg
  149. Help Codes Driving Me Insane
  150. Funny Smell
  151. 94 Seville STS History Codes???
  152. Emissions Code on 1996 STS
  153. Real unhappy with (my new) used caddy - Can't ID the DTC's
  154. Opinions on possible purchase 91 Deville
  155. Signs you need a tuneup?
  156. R/r water pump
  157. Help Me!
  158. Hard Starting STS
  159. OBD2 Reprogramming
  160. Chip or no chip?
  161. Northstar R&R Book Times
  162. Northstars & oil consumption...are there "good" & "bad" motors?
  163. 275hp to 300hp head swap question
  164. Northstar Aftermarket Support
  165. Do Northstars burn oil fast???
  166. Help!!
  167. Northstar overheating
  168. Most common problems with NS motor
  169. Engine size ?????
  170. What is the deal with the Crank Position Sensor and...
  171. sneaky coolant leak, Northstar
  172. Bad plug wires get you crazy codes
  173. stupid dipstick
  174. N* Head Gasket repair part I/ Remove engine
  175. idle speed adjust?
  176. Belt Question
  177. Emissions System
  178. 99 SLS probelms
  179. help with codes?
  180. Head Work
  181. New person here - piston replacement question
  182. How to get to plugs on 00 STS?
  183. 1995 SLS Engine and Trans
  184. tps 1995 sts adjusted
  185. are the '93 and '95 northstar computers the same?
  186. Cracked Water Pump Housing Northstar
  187. Erratic fuel level gauge & a few other ???
  188. Time serts head gaskets and cadillac refunds
  189. 1990 Sedan Deville Valve Job
  190. Limited slip...sort of
  191. Octane reading
  192. Check Oilk Level wont stop
  193. Please help..engine coolant ?....
  194. Traction Control on STS ???
  195. 96 Seville, Check Engine Light, New owner?
  196. Help with cooling system
  197. ? on seville northstar motor?
  198. Help! I have a 1997 Concours(traction c) I would love to know where this wire goes??
  199. maintenence records?
  200. rear windows fog up
  201. Northstar - Golf swap
  202. PCM codes
  203. 1997 Deville problems
  204. Smelling Coolant inside - 93 STS
  205. Battery Replacement on 95 STS
  206. Service Brake Fluid Switch
  207. Transmition shifting ?'s
  208. Engine cutout 93STS north*
  209. Oil Life Message Problem
  210. Can I get some pictures (N* mounting)?
  211. OBD codes
  212. 95-sts wont start
  213. idle sts-95
  214. Anyone know where I can find cheap o2 sensors?!
  215. So....someone wanna rent me a timesert kit?
  216. Ignition module failure?
  217. Need help understanding a code
  218. Best oil for Northstar engines?
  219. Northstar questions: engine and tranny mounts
  220. Service Engine Light
  221. Idle speed
  222. Intermitant DTC P1416, where do I start looking?
  223. phenolic spacers cleaning
  224. Regular Unleaded
  225. Throttle Body
  226. 97 Concours....SOLD!
  227. Help Codes
  228. Thermostat
  229. 4.0/4.6 Combustion Chambers
  230. Intake air sensor / resistor mod
  231. valve job? something burning......
  232. Easy method of telling you need a coolant change!!!!!
  233. 97 dedan deville speedometer display out...
  234. 4.6L engine knock at idle
  235. High Performance driving
  236. Starting Issue
  237. High octane
  238. 4.6L engine knock at idle
  239. Headgaskets
  240. hard starting, won't pass smog symptoms
  241. Info on converter lock,,code PO39
  242. Northstar engine numbers
  243. Locking converter/check engine SOON
  244. How to replace front motor MOUNT
  245. can any one help
  246. Motor Rocks
  247. Torque converter lockup?
  248. Help!
  249. Regular Gas
  250. Nitrous Kit for Northstars - It exists