: Northstar Engines and System Technical Discussion



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  1. Rough Idel
  2. My 99 STS Overheated
  3. Engine Mounts
  4. oil pan gasket
  5. 94 Deville Concourse Billowing White Smoke
  6. cheap perfomance stuff...
  7. Coolant smell from heater; how screwed am I?
  8. Changing the fuel filter
  9. How to do a tuneup on a North*
  10. '96 SLS: IPC Option C problem
  11. Northstar Oil Usage
  12. Buzzing from turn signal
  13. Engine Data Analysis help
  14. 94 eldorado W/coolant in oil
  15. Growe3, Engine Removal Questions
  16. My .02 on Carbon
  17. N* plugs & wires: DIY or leave it for the pros?
  18. MAP sensor
  19. Lucus Products? Fuel Injector Cleaner
  20. Need Northstar Advic
  21. questions before installing new idle speed motor
  22. 94' Sls Pcm
  23. my first mod
  24. coolant leak - is this a bad fix?
  25. 96 Eldorado Oil leak
  26. Northstar dimensions
  27. Mechanic needs help, NS killing ICM
  28. Just told driveshaft is shot. What should I do?
  29. Timesert kit FS! $130 Shipped!
  30. Is my mechanic pulling a 'fast one'?
  31. Sluggish when driving
  32. 1998 Cai??
  33. Error Codes, Diagnostic Mode, RKE Programming, Owners Manuals, General Info
  34. Error Codes and Diagnostic Mode Explained
  35. Head bolt retorque method recommendation needed
  36. Is New Exhaust Hurting MPG?
  37. 1998 STS A/C Problems
  38. traction control sucks!
  39. tranny troubles in Montana
  40. flashing number on display
  41. Which Fuel Company
  42. Oil pressure problems
  43. No power from Northstar on '98 Deville
  44. bosch 4's????
  45. Oil Under Intake Manifold on Northstar
  46. Complicated spark problem on 94/99 Northstar engine
  47. 96 Eldo Warm Eng. Miss No Codes
  48. Every North* blows head gaskets??????
  49. 97 STS P0300 Current/P0603 History SES light
  50. Shift Solenoid "A" and "B" question
  51. whats the difference
  52. Head gaskets on 1993 Allante Northstar
  53. Got codes Help Please
  54. How do I Access OBCII 98 DeVille
  55. good buy?
  56. Fuel Pressure Loss
  57. Crank Sensor--Revisited
  58. Suddenly running rough
  59. Northstar Stalls On Restart
  60. northstar engine swap info
  61. Yep She's A Leaker
  62. Fuel economy post 60k service?
  63. Fuel rail leak--another thorn in the side
  64. anyon know where i can get a chip?
  65. 4.6 running rough at idle in gear
  66. Codes
  67. wat should i do to my car
  68. Annoying engine noise
  69. How long to check codes?
  70. 93 STS Overheated, now idles high. PLEASE HELP
  71. Engine Stalling at traffic light
  72. Coolant Supplement Tablet question
  73. Trans or can it be Electrical
  74. help wilth coede PO23
  75. my 94 SLS code problems help!!
  76. Transmission help!!
  77. Where is the EGR valve located?
  78. clearing codes
  79. How To Fix Clicking Throttle Body
  80. Where can I buy a new EGR valve at a good price?
  81. '98 STS - "Service engine soon" light was on for two days...now off...car runs great
  82. Coolant Flush?
  83. Random Multiple Cylinder Misfire
  84. Idle seems rough.
  85. how to avoid cracked heads?
  86. Can you put in too much coolant?
  87. Dex-Cool
  88. Engine Coolant
  89. Weird?
  90. oil pressure loss "STOP ENGINE" warning FIX
  91. Impossible To Fix Overheating Problem
  92. Leaking coolant? Head gasket???
  93. 4t80-e transmission leakage
  94. Resonator Question..
  95. 96 Eldo Warm Eng. Miss. Acceleration Miss.
  96. How do I retrive codes
  97. Help! Service Emissions Soon and Check Engine
  98. Can you repair the fuel rail
  99. Where to get Northstar computer and harness??
  100. A Little Head
  101. 97 Eldo running weak!
  102. Ok, I've pulled the codes and decoded them...
  103. How do I pull codes off my 97 SLS?
  104. help!!...no start and no power at purple wire
  105. slow return to idle (95 sts)
  106. surging under WOT
  107. where do i get performance chips
  108. EMERGENCY----c1232 and c1255
  109. SUPERCHARGER soon
  110. Fuel Problem. TPS or a cleaning?
  111. Northstar needs engine protectors ?
  112. Spark Plug and Wire Change Summary
  113. Help! 96 STS Stalling and Barely Drives
  114. Bad oil Leak
  115. Is it possible to go from 4.1 to Northstar?
  116. need help on replacing the idle speed control motor
  117. Fuel Rail Replacement 96 sts
  118. ISO mechanic for 95 Seville in NE Illinois/SE Wisconsin
  119. N.Star Deville afermarket Tachometer ?
  120. Northstar Electromotive TEC3 .bin file needed
  121. Blown Head Gasket...Help!!
  122. STS Computer Into Deville?
  123. Frozen Spark Plugs
  124. thanks elwesso,lido
  125. Eldorado Exhaust??
  126. Frenchcad Is Asking For Help To Burn Speed Limit...
  127. car won't start!
  128. 95 STS corrosion
  129. One Dead Deville 1999
  130. 94' SLS t073 erratic idle & stalling
  131. 2000sts trouble codes
  132. check engine soon????????
  133. 99 STS Gas pedal sticking
  134. 94 Northstar question
  135. BG44k
  136. (Pressing gas) CLUNK.. What the heck?
  137. Fuel Additives
  138. Loud Pop
  139. help with some error codes 96 etc.
  140. Increasing Displacement
  141. 4T80E gearing
  142. Holy hell, i tried that Lucus oil additive....
  143. "Stop Engine Low Oil Pressure"
  144. Gas MPG low? and electrical question
  145. need help again, new code
  146. Failed Emission - high HC
  147. Stalling/Starting Problem
  148. 91 vw golf with northstar!!must see
  149. Looking for a source of Northstar Engines
  150. egr
  151. Starter Enable Relay!! Found it, Cleaned it, Fixed it.!!!
  152. Northstar head compatibility
  153. 96 Oil Leak
  154. Parts swapping
  155. Is there a GM TSB for the use of Time-Serts?
  156. 2000 Sts Exhaust
  157. 97 STS eliminate the converter?
  158. Exhaust question
  159. Limp yo-self home, N*!
  160. Trans. Problem?
  161. where is the starter relay, 1993 sts northstar
  162. Transmission flush?
  163. Forum Opinion on 2000 STS
  164. PLEASE!!! -4 and under, lights on,no power to starter!!
  165. dtc pcm 0139 now what?
  166. 1995 sts,manifold cover
  167. Check Coolant Level Message & temp. question
  168. overdrive or drive
  169. Code in history ? P039
  170. Dtc P0101
  171. How to pull engine codes and where to find?
  172. Performance mods!
  173. Diry relief valve causing loss of oil pressure?
  174. 95 STS Water Pump Question.
  175. NOLOGY wires for northstar motors
  176. northstar question
  177. Code SO61? PO83?
  178. Clicking noise
  179. Huge muffler comparison
  180. Fixed the egr valve myself
  181. Does Northstar turn off cylinders like 4-6-8?
  182. Fuel Additives
  183. Problems with N* arise
  184. Diagnostic Code?
  185. Went to a mechanic today on EGR
  186. Thoughts, opinions, and suggestions on carbon deposits.
  187. Year 2000 Northstar 32V engine oil consumption problem?
  188. Spark Plugs
  189. EGR Valve , need help locating it
  190. filling coolant system after flush
  191. Tornado Fuel Saver
  192. EGR valve install question
  193. Where are my O2 Sensors?
  194. PCM? What now
  195. My timesert kit on ebay, reserve at $160!
  196. No speedo!!!
  197. Carbon buildup/ fuel additives/ opinions???
  198. 95 sts starting problems
  199. Should I fix or sell?
  200. could be 1 or 2 things idler pulley or water pump plz help
  201. Northstar driven 94 Pontiac Grand Prix GTP RWD
  202. Leaking Water Pump 1998 Deville
  203. Smoking Northstar!
  204. Engine rebuilt?
  205. Northstar Squealing noise
  206. Oil change
  207. performance exhaust
  208. '94 Concours Hard To Start
  209. P0113/P1111 - then what ?
  210. whast should a 94 north start run temp wise
  211. Changing Serpentine Belt
  212. Custom Intake
  213. Maintaining Northstar Engines *A must Read*
  214. Headgasket replacement finished
  215. N* engine mount bushings...what happens if...
  216. How to remove the belt tensioner?
  217. New Cadillac owner
  218. TO 73 code??????
  219. What are my options?
  220. 2000 DeVille - Stalling
  221. Temp Sensor
  222. Misfirin' 98 DeVille. How much $ is DTC p0300,603,1381 cost?
  223. Temperature sensor - another problem...
  224. 4 Questions / 93 STS w/ 4.6
  225. Lights flicker?
  226. lights that dim when...
  227. Glitch In 97 Concours
  228. alternator replacement part deux
  229. P086 code on 94 STS keep sme from getting it smogged
  230. Calling out 156mph
  231. Cadillac dealer...
  232. ShadowLvr400......
  233. 4.6 northstar / engine, Trans swap ?
  234. TRANSMISSION/Torque convertor problems??? HELP!!!
  235. Nitrous
  236. More on coolant issues....Long post alert!
  237. '95 STS Clearing on-board diagnostic codes
  238. Quick and Simple Question
  239. 2000 STS Oil Life
  240. Calling all North* Specialist....Changing out the Alternator
  241. Service Engine Soon? What's that Noise?
  242. Dashboard mayhem
  243. weird?
  244. Need Technical Help for Engine swaping...
  245. Anyone have an opinion on electric superchargers?
  246. Will '95 coil pack, intake or exhaust fit my '93 N*?
  247. northstar performance upgrades
  248. Exhaust manifold ?
  249. Please help! Considering a '94 Deville Concours N'star
  250. New member, trying to find out if oil burning is ok!