: Northstar Engines and System Technical Discussion



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  1. EGR Valve and Throttle Body
  2. Heater core?
  3. sticky gas pedal/rough idling/accelerating
  4. Head Bolts????
  5. OEM Liquid Sealant at Case Half Seal?
  6. Throttle Body, Rough Idle
  7. 97 air box mod?
  8. throttle body
  9. Head Gasket Repair - Clean Up of Head, Block & Combustion Chambers?
  10. How good is the 4.6L N*
  11. Seville ECM Codes
  12. Trouble Code on '96 Eldorado
  13. tranny probs need help
  14. Unidentified noise in front driver side wheel on a hard right
  15. spark plug gap?
  16. need timesert kit for my 94 n*
  17. 1993 Northstar engine knock
  18. Code IRC B1771
  19. Excessive Crank Time - Advice Needed
  20. Cost Efficient Mods for '98 STS?
  21. Pls help! How much $ should it cost to repair.....
  22. trouble code retrival
  23. Iridium spark plugs
  24. Sedan Deville Diag Codes: How to interpret?
  25. Boosted caddys
  26. 95 sts,pcm?
  27. Northstar Mechanic
  28. 96 ETC code problems
  29. Codes
  30. Help with Timing Chain Removal
  31. help me with my ....
  32. It just quits (dies) restarts fine.
  33. fuel economy
  34. radiator with holes
  35. supercharged caddy?
  36. A few questions 2
  37. A little more Fuel or air needed.
  38. Is there anywhere to get the specs for a 4.6L Northstar
  39. Brake Fluid Flush
  40. GM part no. for timesert inserts?
  41. God ! please help me before my caddy kills me..
  42. 2000+ NorthStar modified to fit 1994 = success
  43. Lots O'Codes HELP!!!
  44. Coolant Change
  45. cruise control not working properly!
  46. Need help with codes
  47. i smell coolant, is my water pump bad?
  48. Crank micropolishing/where to buy parts?
  49. New Lights
  50. O2 sensor
  51. 95 eldorado Northstar over heats
  52. What to do, what to do...
  53. Main Bearing Replacement?
  54. Rear Main Seal Installer
  55. Looking for a few answers
  56. Help!!!
  57. 94 Seville
  58. My 1996 Sedan Deville won't go over 40 mph?
  59. Northstar and CHRFAB article
  60. 94 eldo compression test
  61. Ignition Wires
  62. Ran my STS again
  63. how long....
  64. 1994 Deville oil pan gasket leak
  65. Leaky oil pan gasket on 94 N* eldo
  66. Service Ride Control and traction control
  67. Some initial worries for 94 eldo tc
  68. some problems
  69. computer readout !!!
  70. Thottle Body
  71. Where to find a Northstar engine
  72. Rough Idel
  73. My 99 STS Overheated
  74. Engine Mounts
  75. oil pan gasket
  76. 94 Deville Concourse Billowing White Smoke
  77. cheap perfomance stuff...
  78. Coolant smell from heater; how screwed am I?
  79. Changing the fuel filter
  80. How to do a tuneup on a North*
  81. '96 SLS: IPC Option C problem
  82. Northstar Oil Usage
  83. Buzzing from turn signal
  84. Engine Data Analysis help
  85. 94 eldorado W/coolant in oil
  86. Growe3, Engine Removal Questions
  87. My .02 on Carbon
  88. N* plugs & wires: DIY or leave it for the pros?
  89. MAP sensor
  90. Lucus Products? Fuel Injector Cleaner
  91. Need Northstar Advic
  92. questions before installing new idle speed motor
  93. 94' Sls Pcm
  94. my first mod
  95. coolant leak - is this a bad fix?
  96. 96 Eldorado Oil leak
  97. Northstar dimensions
  98. Mechanic needs help, NS killing ICM
  99. Just told driveshaft is shot. What should I do?
  100. Timesert kit FS! $130 Shipped!
  101. Is my mechanic pulling a 'fast one'?
  102. Sluggish when driving
  103. 1998 Cai??
  104. Error Codes, Diagnostic Mode, RKE Programming, Owners Manuals, General Info
  105. Error Codes and Diagnostic Mode Explained
  106. Head bolt retorque method recommendation needed
  107. Is New Exhaust Hurting MPG?
  108. 1998 STS A/C Problems
  109. traction control sucks!
  110. tranny troubles in Montana
  111. flashing number on display
  112. Which Fuel Company
  113. Oil pressure problems
  114. No power from Northstar on '98 Deville
  115. bosch 4's????
  116. Oil Under Intake Manifold on Northstar
  117. Complicated spark problem on 94/99 Northstar engine
  118. 96 Eldo Warm Eng. Miss No Codes
  119. Every North* blows head gaskets??????
  120. 97 STS P0300 Current/P0603 History SES light
  121. Shift Solenoid "A" and "B" question
  122. whats the difference
  123. Head gaskets on 1993 Allante Northstar
  124. Got codes Help Please
  125. How do I Access OBCII 98 DeVille
  126. good buy?
  127. Fuel Pressure Loss
  128. Crank Sensor--Revisited
  129. Suddenly running rough
  130. Northstar Stalls On Restart
  131. northstar engine swap info
  132. Yep She's A Leaker
  133. Fuel economy post 60k service?
  134. Fuel rail leak--another thorn in the side
  135. anyon know where i can get a chip?
  136. 4.6 running rough at idle in gear
  137. Codes
  138. wat should i do to my car
  139. Annoying engine noise
  140. How long to check codes?
  141. 93 STS Overheated, now idles high. PLEASE HELP
  142. Engine Stalling at traffic light
  143. Coolant Supplement Tablet question
  144. Trans or can it be Electrical
  145. help wilth coede PO23
  146. my 94 SLS code problems help!!
  147. Transmission help!!
  148. Where is the EGR valve located?
  149. clearing codes
  150. How To Fix Clicking Throttle Body
  151. Where can I buy a new EGR valve at a good price?
  152. '98 STS - "Service engine soon" light was on for two days...now off...car runs great
  153. Coolant Flush?
  154. Random Multiple Cylinder Misfire
  155. Idle seems rough.
  156. how to avoid cracked heads?
  157. Can you put in too much coolant?
  158. Dex-Cool
  159. Engine Coolant
  160. Weird?
  161. oil pressure loss "STOP ENGINE" warning FIX
  162. Impossible To Fix Overheating Problem
  163. Leaking coolant? Head gasket???
  164. 4t80-e transmission leakage
  165. Resonator Question..
  166. 96 Eldo Warm Eng. Miss. Acceleration Miss.
  167. How do I retrive codes
  168. Help! Service Emissions Soon and Check Engine
  169. Can you repair the fuel rail
  170. Where to get Northstar computer and harness??
  171. A Little Head
  172. 97 Eldo running weak!
  173. Ok, I've pulled the codes and decoded them...
  174. How do I pull codes off my 97 SLS?
  175. help!!...no start and no power at purple wire
  176. slow return to idle (95 sts)
  177. surging under WOT
  178. where do i get performance chips
  179. EMERGENCY----c1232 and c1255
  180. SUPERCHARGER soon
  181. Fuel Problem. TPS or a cleaning?
  182. Northstar needs engine protectors ?
  183. Spark Plug and Wire Change Summary
  184. Help! 96 STS Stalling and Barely Drives
  185. Bad oil Leak
  186. Is it possible to go from 4.1 to Northstar?
  187. need help on replacing the idle speed control motor
  188. Fuel Rail Replacement 96 sts
  189. ISO mechanic for 95 Seville in NE Illinois/SE Wisconsin
  190. N.Star Deville afermarket Tachometer ?
  191. Northstar Electromotive TEC3 .bin file needed
  192. Blown Head Gasket...Help!!
  193. STS Computer Into Deville?
  194. Frozen Spark Plugs
  195. thanks elwesso,lido
  196. Eldorado Exhaust??
  197. Frenchcad Is Asking For Help To Burn Speed Limit...
  198. car won't start!
  199. 95 STS corrosion
  200. One Dead Deville 1999
  201. 94' SLS t073 erratic idle & stalling
  202. 2000sts trouble codes
  203. check engine soon????????
  204. 99 STS Gas pedal sticking
  205. 94 Northstar question
  206. BG44k
  207. (Pressing gas) CLUNK.. What the heck?
  208. Fuel Additives
  209. Loud Pop
  210. help with some error codes 96 etc.
  211. Increasing Displacement
  212. 4T80E gearing
  213. Holy hell, i tried that Lucus oil additive....
  214. "Stop Engine Low Oil Pressure"
  215. Gas MPG low? and electrical question
  216. need help again, new code
  217. Failed Emission - high HC
  218. Stalling/Starting Problem
  219. 91 vw golf with northstar!!must see
  220. Looking for a source of Northstar Engines
  221. egr
  222. Starter Enable Relay!! Found it, Cleaned it, Fixed it.!!!
  223. Northstar head compatibility
  224. 96 Oil Leak
  225. Parts swapping
  226. Is there a GM TSB for the use of Time-Serts?
  227. 2000 Sts Exhaust
  228. 97 STS eliminate the converter?
  229. Exhaust question
  230. Limp yo-self home, N*!
  231. Trans. Problem?
  232. where is the starter relay, 1993 sts northstar
  233. Transmission flush?
  234. Forum Opinion on 2000 STS
  235. PLEASE!!! -4 and under, lights on,no power to starter!!
  236. dtc pcm 0139 now what?
  237. 1995 sts,manifold cover
  238. Check Coolant Level Message & temp. question
  239. overdrive or drive
  240. Code in history ? P039
  241. Dtc P0101
  242. How to pull engine codes and where to find?
  243. Performance mods!
  244. Diry relief valve causing loss of oil pressure?
  245. 95 STS Water Pump Question.
  246. NOLOGY wires for northstar motors
  247. northstar question
  248. Code SO61? PO83?
  249. Clicking noise
  250. Huge muffler comparison