: Northstar Engines and System Technical Discussion



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  1. Coolant Flush?
  2. Random Multiple Cylinder Misfire
  3. Idle seems rough.
  4. how to avoid cracked heads?
  5. Can you put in too much coolant?
  6. Dex-Cool
  7. Engine Coolant
  8. Weird?
  9. oil pressure loss "STOP ENGINE" warning FIX
  10. Impossible To Fix Overheating Problem
  11. Leaking coolant? Head gasket???
  12. 4t80-e transmission leakage
  13. Resonator Question..
  14. 96 Eldo Warm Eng. Miss. Acceleration Miss.
  15. How do I retrive codes
  16. Help! Service Emissions Soon and Check Engine
  17. Can you repair the fuel rail
  18. Where to get Northstar computer and harness??
  19. A Little Head
  20. 97 Eldo running weak!
  21. Ok, I've pulled the codes and decoded them...
  22. How do I pull codes off my 97 SLS?
  23. help!!...no start and no power at purple wire
  24. slow return to idle (95 sts)
  25. surging under WOT
  26. where do i get performance chips
  27. EMERGENCY----c1232 and c1255
  28. SUPERCHARGER soon
  29. Fuel Problem. TPS or a cleaning?
  30. Northstar needs engine protectors ?
  31. Spark Plug and Wire Change Summary
  32. Help! 96 STS Stalling and Barely Drives
  33. Bad oil Leak
  34. Is it possible to go from 4.1 to Northstar?
  35. need help on replacing the idle speed control motor
  36. Fuel Rail Replacement 96 sts
  37. ISO mechanic for 95 Seville in NE Illinois/SE Wisconsin
  38. N.Star Deville afermarket Tachometer ?
  39. Northstar Electromotive TEC3 .bin file needed
  40. Blown Head Gasket...Help!!
  41. STS Computer Into Deville?
  42. Frozen Spark Plugs
  43. thanks elwesso,lido
  44. Eldorado Exhaust??
  45. Frenchcad Is Asking For Help To Burn Speed Limit...
  46. car won't start!
  47. 95 STS corrosion
  48. One Dead Deville 1999
  49. 94' SLS t073 erratic idle & stalling
  50. 2000sts trouble codes
  51. check engine soon????????
  52. 99 STS Gas pedal sticking
  53. 94 Northstar question
  54. BG44k
  55. (Pressing gas) CLUNK.. What the heck?
  56. Fuel Additives
  57. Loud Pop
  58. help with some error codes 96 etc.
  59. Increasing Displacement
  60. 4T80E gearing
  61. Holy hell, i tried that Lucus oil additive....
  62. "Stop Engine Low Oil Pressure"
  63. Gas MPG low? and electrical question
  64. need help again, new code
  65. Failed Emission - high HC
  66. Stalling/Starting Problem
  67. 91 vw golf with northstar!!must see
  68. Looking for a source of Northstar Engines
  69. egr
  70. Starter Enable Relay!! Found it, Cleaned it, Fixed it.!!!
  71. Northstar head compatibility
  72. 96 Oil Leak
  73. Parts swapping
  74. Is there a GM TSB for the use of Time-Serts?
  75. 2000 Sts Exhaust
  76. 97 STS eliminate the converter?
  77. Exhaust question
  78. Limp yo-self home, N*!
  79. Trans. Problem?
  80. where is the starter relay, 1993 sts northstar
  81. Transmission flush?
  82. Forum Opinion on 2000 STS
  83. PLEASE!!! -4 and under, lights on,no power to starter!!
  84. dtc pcm 0139 now what?
  85. 1995 sts,manifold cover
  86. Check Coolant Level Message & temp. question
  87. overdrive or drive
  88. Code in history ? P039
  89. Dtc P0101
  90. How to pull engine codes and where to find?
  91. Performance mods!
  92. Diry relief valve causing loss of oil pressure?
  93. 95 STS Water Pump Question.
  94. NOLOGY wires for northstar motors
  95. northstar question
  96. Code SO61? PO83?
  97. Clicking noise
  98. Huge muffler comparison
  99. Fixed the egr valve myself
  100. Does Northstar turn off cylinders like 4-6-8?
  101. Fuel Additives
  102. Problems with N* arise
  103. Diagnostic Code?
  104. Went to a mechanic today on EGR
  105. Thoughts, opinions, and suggestions on carbon deposits.
  106. Year 2000 Northstar 32V engine oil consumption problem?
  107. Spark Plugs
  108. EGR Valve , need help locating it
  109. filling coolant system after flush
  110. Tornado Fuel Saver
  111. EGR valve install question
  112. Where are my O2 Sensors?
  113. PCM? What now
  114. My timesert kit on ebay, reserve at $160!
  115. No speedo!!!
  116. Carbon buildup/ fuel additives/ opinions???
  117. 95 sts starting problems
  118. Should I fix or sell?
  119. could be 1 or 2 things idler pulley or water pump plz help
  120. Northstar driven 94 Pontiac Grand Prix GTP RWD
  121. Leaking Water Pump 1998 Deville
  122. Smoking Northstar!
  123. Engine rebuilt?
  124. Northstar Squealing noise
  125. Oil change
  126. performance exhaust
  127. '94 Concours Hard To Start
  128. P0113/P1111 - then what ?
  129. whast should a 94 north start run temp wise
  130. Changing Serpentine Belt
  131. Custom Intake
  132. Maintaining Northstar Engines *A must Read*
  133. Headgasket replacement finished
  134. N* engine mount bushings...what happens if...
  135. How to remove the belt tensioner?
  136. New Cadillac owner
  137. TO 73 code??????
  138. What are my options?
  139. 2000 DeVille - Stalling
  140. Temp Sensor
  141. Misfirin' 98 DeVille. How much $ is DTC p0300,603,1381 cost?
  142. Temperature sensor - another problem...
  143. 4 Questions / 93 STS w/ 4.6
  144. Lights flicker?
  145. lights that dim when...
  146. Glitch In 97 Concours
  147. alternator replacement part deux
  148. P086 code on 94 STS keep sme from getting it smogged
  149. Calling out 156mph
  150. Cadillac dealer...
  151. ShadowLvr400......
  152. 4.6 northstar / engine, Trans swap ?
  153. TRANSMISSION/Torque convertor problems??? HELP!!!
  154. Nitrous
  155. More on coolant issues....Long post alert!
  156. '95 STS Clearing on-board diagnostic codes
  157. Quick and Simple Question
  158. 2000 STS Oil Life
  159. Calling all North* Specialist....Changing out the Alternator
  160. Service Engine Soon? What's that Noise?
  161. Dashboard mayhem
  162. weird?
  163. Need Technical Help for Engine swaping...
  164. Anyone have an opinion on electric superchargers?
  165. Will '95 coil pack, intake or exhaust fit my '93 N*?
  166. northstar performance upgrades
  167. Exhaust manifold ?
  168. Please help! Considering a '94 Deville Concours N'star
  169. New member, trying to find out if oil burning is ok!
  170. Repair Advice Needed in Orange County, CA
  171. P030 Code on '93 STS
  172. "no battery charge"
  173. "check oil level"
  174. '95 STS showing SES code: P085
  175. Which o2 sensor??
  176. Code PO24-VSS Signal To TCC-Where is It Located At?
  177. TPS - Problems
  178. thermal meltdown of n* engine ?
  179. Are Gremlins pinching my fuel line? ARGHHH!!
  180. 2002 engine into 97 Deville?
  181. Tune up?
  182. Freeze plugs ( So called )
  183. 94 Concourse Shifting Problem
  184. I smell gas in my 95 concours
  185. message
  186. update on my 97 concours
  187. NA power out of a North*?
  188. 2002 what does loss of dim communication?
  189. Turbos put back?
  190. Leaking Heater Core in 1999 DeVelle
  191. Overheating: Am I screwed?
  192. Bolting filter right on the motor
  193. 94 Eldorado Oil level sensor problem
  194. o2 sensors!!!!!! argggggggg
  195. Help Codes Driving Me Insane
  196. Funny Smell
  197. 94 Seville STS History Codes???
  198. Emissions Code on 1996 STS
  199. Real unhappy with (my new) used caddy - Can't ID the DTC's
  200. Opinions on possible purchase 91 Deville
  201. Signs you need a tuneup?
  202. R/r water pump
  203. Help Me!
  204. Hard Starting STS
  205. OBD2 Reprogramming
  206. Chip or no chip?
  207. Northstar R&R Book Times
  208. Northstars & oil consumption...are there "good" & "bad" motors?
  209. 275hp to 300hp head swap question
  210. Northstar Aftermarket Support
  211. Do Northstars burn oil fast???
  212. Help!!
  213. Northstar overheating
  214. Most common problems with NS motor
  215. Engine size ?????
  216. What is the deal with the Crank Position Sensor and...
  217. sneaky coolant leak, Northstar
  218. Bad plug wires get you crazy codes
  219. stupid dipstick
  220. N* Head Gasket repair part I/ Remove engine
  221. idle speed adjust?
  222. Belt Question
  223. Emissions System
  224. 99 SLS probelms
  225. help with codes?
  226. Head Work
  227. New person here - piston replacement question
  228. How to get to plugs on 00 STS?
  229. 1995 SLS Engine and Trans
  230. tps 1995 sts adjusted
  231. are the '93 and '95 northstar computers the same?
  232. Cracked Water Pump Housing Northstar
  233. Erratic fuel level gauge & a few other ???
  234. Time serts head gaskets and cadillac refunds
  235. 1990 Sedan Deville Valve Job
  236. Limited slip...sort of
  237. Octane reading
  238. Check Oilk Level wont stop
  239. Please help..engine coolant ?....
  240. Traction Control on STS ???
  241. 96 Seville, Check Engine Light, New owner?
  242. Help with cooling system
  243. ? on seville northstar motor?
  244. Help! I have a 1997 Concours(traction c) I would love to know where this wire goes??
  245. maintenence records?
  246. rear windows fog up
  247. Northstar - Golf swap
  248. PCM codes
  249. 1997 Deville problems
  250. Smelling Coolant inside - 93 STS