: Northstar Engines and System Technical Discussion



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