: Northstar Engines and System Technical Discussion



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  1. 1998 Cai??
  2. Error Codes, Diagnostic Mode, RKE Programming, Owners Manuals, General Info
  3. Error Codes and Diagnostic Mode Explained
  4. Head bolt retorque method recommendation needed
  5. Is New Exhaust Hurting MPG?
  6. 1998 STS A/C Problems
  7. traction control sucks!
  8. tranny troubles in Montana
  9. flashing number on display
  10. Which Fuel Company
  11. Oil pressure problems
  12. No power from Northstar on '98 Deville
  13. bosch 4's????
  14. Oil Under Intake Manifold on Northstar
  15. Complicated spark problem on 94/99 Northstar engine
  16. 96 Eldo Warm Eng. Miss No Codes
  17. Every North* blows head gaskets??????
  18. 97 STS P0300 Current/P0603 History SES light
  19. Shift Solenoid "A" and "B" question
  20. whats the difference
  21. Head gaskets on 1993 Allante Northstar
  22. Got codes Help Please
  23. How do I Access OBCII 98 DeVille
  24. good buy?
  25. Fuel Pressure Loss
  26. Crank Sensor--Revisited
  27. Suddenly running rough
  28. Northstar Stalls On Restart
  29. northstar engine swap info
  30. Yep She's A Leaker
  31. Fuel economy post 60k service?
  32. Fuel rail leak--another thorn in the side
  33. anyon know where i can get a chip?
  34. 4.6 running rough at idle in gear
  35. Codes
  36. wat should i do to my car
  37. Annoying engine noise
  38. How long to check codes?
  39. 93 STS Overheated, now idles high. PLEASE HELP
  40. Engine Stalling at traffic light
  41. Coolant Supplement Tablet question
  42. Trans or can it be Electrical
  43. help wilth coede PO23
  44. my 94 SLS code problems help!!
  45. Transmission help!!
  46. Where is the EGR valve located?
  47. clearing codes
  48. How To Fix Clicking Throttle Body
  49. Where can I buy a new EGR valve at a good price?
  50. '98 STS - "Service engine soon" light was on for two days...now off...car runs great
  51. Coolant Flush?
  52. Random Multiple Cylinder Misfire
  53. Idle seems rough.
  54. how to avoid cracked heads?
  55. Can you put in too much coolant?
  56. Dex-Cool
  57. Engine Coolant
  58. Weird?
  59. oil pressure loss "STOP ENGINE" warning FIX
  60. Impossible To Fix Overheating Problem
  61. Leaking coolant? Head gasket???
  62. 4t80-e transmission leakage
  63. Resonator Question..
  64. 96 Eldo Warm Eng. Miss. Acceleration Miss.
  65. How do I retrive codes
  66. Help! Service Emissions Soon and Check Engine
  67. Can you repair the fuel rail
  68. Where to get Northstar computer and harness??
  69. A Little Head
  70. 97 Eldo running weak!
  71. Ok, I've pulled the codes and decoded them...
  72. How do I pull codes off my 97 SLS?
  73. help!!...no start and no power at purple wire
  74. slow return to idle (95 sts)
  75. surging under WOT
  76. where do i get performance chips
  77. EMERGENCY----c1232 and c1255
  78. SUPERCHARGER soon
  79. Fuel Problem. TPS or a cleaning?
  80. Northstar needs engine protectors ?
  81. Spark Plug and Wire Change Summary
  82. Help! 96 STS Stalling and Barely Drives
  83. Bad oil Leak
  84. Is it possible to go from 4.1 to Northstar?
  85. need help on replacing the idle speed control motor
  86. Fuel Rail Replacement 96 sts
  87. ISO mechanic for 95 Seville in NE Illinois/SE Wisconsin
  88. N.Star Deville afermarket Tachometer ?
  89. Northstar Electromotive TEC3 .bin file needed
  90. Blown Head Gasket...Help!!
  91. STS Computer Into Deville?
  92. Frozen Spark Plugs
  93. thanks elwesso,lido
  94. Eldorado Exhaust??
  95. Frenchcad Is Asking For Help To Burn Speed Limit...
  96. car won't start!
  97. 95 STS corrosion
  98. One Dead Deville 1999
  99. 94' SLS t073 erratic idle & stalling
  100. 2000sts trouble codes
  101. check engine soon????????
  102. 99 STS Gas pedal sticking
  103. 94 Northstar question
  104. BG44k
  105. (Pressing gas) CLUNK.. What the heck?
  106. Fuel Additives
  107. Loud Pop
  108. help with some error codes 96 etc.
  109. Increasing Displacement
  110. 4T80E gearing
  111. Holy hell, i tried that Lucus oil additive....
  112. "Stop Engine Low Oil Pressure"
  113. Gas MPG low? and electrical question
  114. need help again, new code
  115. Failed Emission - high HC
  116. Stalling/Starting Problem
  117. 91 vw golf with northstar!!must see
  118. Looking for a source of Northstar Engines
  119. egr
  120. Starter Enable Relay!! Found it, Cleaned it, Fixed it.!!!
  121. Northstar head compatibility
  122. 96 Oil Leak
  123. Parts swapping
  124. Is there a GM TSB for the use of Time-Serts?
  125. 2000 Sts Exhaust
  126. 97 STS eliminate the converter?
  127. Exhaust question
  128. Limp yo-self home, N*!
  129. Trans. Problem?
  130. where is the starter relay, 1993 sts northstar
  131. Transmission flush?
  132. Forum Opinion on 2000 STS
  133. PLEASE!!! -4 and under, lights on,no power to starter!!
  134. dtc pcm 0139 now what?
  135. 1995 sts,manifold cover
  136. Check Coolant Level Message & temp. question
  137. overdrive or drive
  138. Code in history ? P039
  139. Dtc P0101
  140. How to pull engine codes and where to find?
  141. Performance mods!
  142. Diry relief valve causing loss of oil pressure?
  143. 95 STS Water Pump Question.
  144. NOLOGY wires for northstar motors
  145. northstar question
  146. Code SO61? PO83?
  147. Clicking noise
  148. Huge muffler comparison
  149. Fixed the egr valve myself
  150. Does Northstar turn off cylinders like 4-6-8?
  151. Fuel Additives
  152. Problems with N* arise
  153. Diagnostic Code?
  154. Went to a mechanic today on EGR
  155. Thoughts, opinions, and suggestions on carbon deposits.
  156. Year 2000 Northstar 32V engine oil consumption problem?
  157. Spark Plugs
  158. EGR Valve , need help locating it
  159. filling coolant system after flush
  160. Tornado Fuel Saver
  161. EGR valve install question
  162. Where are my O2 Sensors?
  163. PCM? What now
  164. My timesert kit on ebay, reserve at $160!
  165. No speedo!!!
  166. Carbon buildup/ fuel additives/ opinions???
  167. 95 sts starting problems
  168. Should I fix or sell?
  169. could be 1 or 2 things idler pulley or water pump plz help
  170. Northstar driven 94 Pontiac Grand Prix GTP RWD
  171. Leaking Water Pump 1998 Deville
  172. Smoking Northstar!
  173. Engine rebuilt?
  174. Northstar Squealing noise
  175. Oil change
  176. performance exhaust
  177. '94 Concours Hard To Start
  178. P0113/P1111 - then what ?
  179. whast should a 94 north start run temp wise
  180. Changing Serpentine Belt
  181. Custom Intake
  182. Maintaining Northstar Engines *A must Read*
  183. Headgasket replacement finished
  184. N* engine mount bushings...what happens if...
  185. How to remove the belt tensioner?
  186. New Cadillac owner
  187. TO 73 code??????
  188. What are my options?
  189. 2000 DeVille - Stalling
  190. Temp Sensor
  191. Misfirin' 98 DeVille. How much $ is DTC p0300,603,1381 cost?
  192. Temperature sensor - another problem...
  193. 4 Questions / 93 STS w/ 4.6
  194. Lights flicker?
  195. lights that dim when...
  196. Glitch In 97 Concours
  197. alternator replacement part deux
  198. P086 code on 94 STS keep sme from getting it smogged
  199. Calling out 156mph
  200. Cadillac dealer...
  201. ShadowLvr400......
  202. 4.6 northstar / engine, Trans swap ?
  203. TRANSMISSION/Torque convertor problems??? HELP!!!
  204. Nitrous
  205. More on coolant issues....Long post alert!
  206. '95 STS Clearing on-board diagnostic codes
  207. Quick and Simple Question
  208. 2000 STS Oil Life
  209. Calling all North* Specialist....Changing out the Alternator
  210. Service Engine Soon? What's that Noise?
  211. Dashboard mayhem
  212. weird?
  213. Need Technical Help for Engine swaping...
  214. Anyone have an opinion on electric superchargers?
  215. Will '95 coil pack, intake or exhaust fit my '93 N*?
  216. northstar performance upgrades
  217. Exhaust manifold ?
  218. Please help! Considering a '94 Deville Concours N'star
  219. New member, trying to find out if oil burning is ok!
  220. Repair Advice Needed in Orange County, CA
  221. P030 Code on '93 STS
  222. "no battery charge"
  223. "check oil level"
  224. '95 STS showing SES code: P085
  225. Which o2 sensor??
  226. Code PO24-VSS Signal To TCC-Where is It Located At?
  227. TPS - Problems
  228. thermal meltdown of n* engine ?
  229. Are Gremlins pinching my fuel line? ARGHHH!!
  230. 2002 engine into 97 Deville?
  231. Tune up?
  232. Freeze plugs ( So called )
  233. 94 Concourse Shifting Problem
  234. I smell gas in my 95 concours
  235. message
  236. update on my 97 concours
  237. NA power out of a North*?
  238. 2002 what does loss of dim communication?
  239. Turbos put back?
  240. Leaking Heater Core in 1999 DeVelle
  241. Overheating: Am I screwed?
  242. Bolting filter right on the motor
  243. 94 Eldorado Oil level sensor problem
  244. o2 sensors!!!!!! argggggggg
  245. Help Codes Driving Me Insane
  246. Funny Smell
  247. 94 Seville STS History Codes???
  248. Emissions Code on 1996 STS
  249. Real unhappy with (my new) used caddy - Can't ID the DTC's
  250. Opinions on possible purchase 91 Deville