: Northstar Engines and System Technical Discussion



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