View Full Version : Northstar Performance and Technical Discussion


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  1. ISO mechanic for 95 Seville in NE Illinois/SE Wisconsin
  2. Fuel Rail Replacement 96 sts
  3. need help on replacing the idle speed control motor
  4. Is it possible to go from 4.1 to Northstar?
  5. Bad oil Leak
  6. Help! 96 STS Stalling and Barely Drives
  7. Spark Plug and Wire Change Summary
  8. Northstar needs engine protectors ?
  9. Fuel Problem. TPS or a cleaning?
  10. SUPERCHARGER soon
  11. EMERGENCY----c1232 and c1255
  12. where do i get performance chips
  13. surging under WOT
  14. slow return to idle (95 sts)
  15. help!!...no start and no power at purple wire
  16. How do I pull codes off my 97 SLS?
  17. Ok, I've pulled the codes and decoded them...
  18. 97 Eldo running weak!
  19. A Little Head
  20. Where to get Northstar computer and harness??
  21. Can you repair the fuel rail
  22. Help! Service Emissions Soon and Check Engine
  23. How do I retrive codes
  24. 96 Eldo Warm Eng. Miss. Acceleration Miss.
  25. Resonator Question..
  26. 4t80-e transmission leakage
  27. Leaking coolant? Head gasket???
  28. Impossible To Fix Overheating Problem
  29. oil pressure loss "STOP ENGINE" warning FIX
  30. Weird?
  31. Engine Coolant
  32. Dex-Cool
  33. Can you put in too much coolant?
  34. how to avoid cracked heads?
  35. Idle seems rough.
  36. Random Multiple Cylinder Misfire
  37. Coolant Flush?
  38. '98 STS - "Service engine soon" light was on for two days...now off...car runs great
  39. Where can I buy a new EGR valve at a good price?
  40. How To Fix Clicking Throttle Body
  41. clearing codes
  42. Where is the EGR valve located?
  43. Transmission help!!
  44. my 94 SLS code problems help!!
  45. help wilth coede PO23
  46. Trans or can it be Electrical
  47. Coolant Supplement Tablet question
  48. Engine Stalling at traffic light
  49. 93 STS Overheated, now idles high. PLEASE HELP
  50. How long to check codes?
  51. Annoying engine noise
  52. wat should i do to my car
  53. Codes
  54. 4.6 running rough at idle in gear
  55. anyon know where i can get a chip?
  56. Fuel rail leak--another thorn in the side
  57. Fuel economy post 60k service?
  58. Yep She's A Leaker
  59. northstar engine swap info
  60. Northstar Stalls On Restart
  61. Suddenly running rough
  62. Crank Sensor--Revisited
  63. Fuel Pressure Loss
  64. good buy?
  65. How do I Access OBCII 98 DeVille
  66. Got codes Help Please
  67. Head gaskets on 1993 Allante Northstar
  68. whats the difference
  69. Shift Solenoid "A" and "B" question
  70. 97 STS P0300 Current/P0603 History SES light
  71. Every North* blows head gaskets??????
  72. 96 Eldo Warm Eng. Miss No Codes
  73. Complicated spark problem on 94/99 Northstar engine
  74. Oil Under Intake Manifold on Northstar
  75. bosch 4's????
  76. No power from Northstar on '98 Deville
  77. Oil pressure problems
  78. Which Fuel Company
  79. flashing number on display
  80. tranny troubles in Montana
  81. traction control sucks!
  82. 1998 STS A/C Problems
  83. Is New Exhaust Hurting MPG?
  84. Head bolt retorque method recommendation needed
  85. Error Codes and Diagnostic Mode Explained
  86. Error Codes, Diagnostic Mode, RKE Programming, Owners Manuals, General Info
  87. 1998 Cai??
  88. Sluggish when driving
  89. Is my mechanic pulling a 'fast one'?
  90. Timesert kit FS! $130 Shipped!
  91. Just told driveshaft is shot. What should I do?
  92. Mechanic needs help, NS killing ICM
  93. Northstar dimensions
  94. 96 Eldorado Oil leak
  95. coolant leak - is this a bad fix?
  96. my first mod
  97. 94' Sls Pcm
  98. questions before installing new idle speed motor
  99. Need Northstar Advic
  100. Lucus Products? Fuel Injector Cleaner
  101. MAP sensor
  102. N* plugs & wires: DIY or leave it for the pros?
  103. My .02 on Carbon
  104. Growe3, Engine Removal Questions
  105. 94 eldorado W/coolant in oil
  106. Engine Data Analysis help
  107. Buzzing from turn signal
  108. Northstar Oil Usage
  109. '96 SLS: IPC Option C problem
  110. How to do a tuneup on a North*
  111. Changing the fuel filter
  112. Coolant smell from heater; how screwed am I?
  113. cheap perfomance stuff...
  114. 94 Deville Concourse Billowing White Smoke
  115. oil pan gasket
  116. Engine Mounts
  117. My 99 STS Overheated
  118. Rough Idel
  119. Where to find a Northstar engine
  120. Thottle Body
  121. computer readout !!!
  122. some problems
  123. Some initial worries for 94 eldo tc
  124. Service Ride Control and traction control
  125. Leaky oil pan gasket on 94 N* eldo
  126. 1994 Deville oil pan gasket leak
  127. how long....
  128. Ran my STS again
  129. Ignition Wires
  130. 94 eldo compression test
  131. Northstar and CHRFAB article
  132. My 1996 Sedan Deville won't go over 40 mph?
  133. 94 Seville
  134. Help!!!
  135. Looking for a few answers
  136. Rear Main Seal Installer
  137. Main Bearing Replacement?
  138. What to do, what to do...
  139. 95 eldorado Northstar over heats
  140. O2 sensor
  141. New Lights
  142. Crank micropolishing/where to buy parts?
  143. i smell coolant, is my water pump bad?
  144. Need help with codes
  145. cruise control not working properly!
  146. Coolant Change
  147. Lots O'Codes HELP!!!
  148. 2000+ NorthStar modified to fit 1994 = success
  149. God ! please help me before my caddy kills me..
  150. GM part no. for timesert inserts?
  151. Brake Fluid Flush
  152. Is there anywhere to get the specs for a 4.6L Northstar
  153. A little more Fuel or air needed.
  154. A few questions 2
  155. supercharged caddy?
  156. radiator with holes
  157. fuel economy
  158. It just quits (dies) restarts fine.
  159. help me with my ....
  160. Help with Timing Chain Removal
  161. Codes
  162. 96 ETC code problems
  163. Northstar Mechanic
  164. 95 sts,pcm?
  165. Boosted caddys
  166. Sedan Deville Diag Codes: How to interpret?
  167. Iridium spark plugs
  168. trouble code retrival
  169. Pls help! How much $ should it cost to repair.....
  170. Cost Efficient Mods for '98 STS?
  171. Excessive Crank Time - Advice Needed
  172. Code IRC B1771
  173. 1993 Northstar engine knock
  174. need timesert kit for my 94 n*
  175. spark plug gap?
  176. Unidentified noise in front driver side wheel on a hard right
  177. tranny probs need help
  178. Trouble Code on '96 Eldorado
  179. Seville ECM Codes
  180. How good is the 4.6L N*
  181. Head Gasket Repair - Clean Up of Head, Block & Combustion Chambers?
  182. throttle body
  183. 97 air box mod?
  184. Throttle Body, Rough Idle
  185. OEM Liquid Sealant at Case Half Seal?
  186. Head Bolts????
  187. sticky gas pedal/rough idling/accelerating
  188. Heater core?
  189. EGR Valve and Throttle Body
  190. Kit Car w/Northstar, Engine VIN codes
  191. 95 Harness --> 93 Block/sensors?
  192. 95 eldorado oil questions
  193. Miracle fuel additive stopped noise and oil consumption
  194. wierd idle
  195. Transmission Valve (or what the dealer told me)
  196. Service Manuals
  197. Oil filter
  198. Advise on De Ville 97
  199. Is it stupid to put in a new engine?????
  200. More oil consumption
  201. Rough Idle
  202. check engine light
  203. 4T80e questions
  204. Northstar vs 4.9
  205. NEW exhaust idea...
  206. PO85 Fix
  207. Car Rides Horribly!
  208. So how many people have had overheating/bad head gasket problems?
  209. 98 SLS Trans/mounts Questions
  210. Water Pump Drive Pulley
  211. BCM causing rough idle?
  212. bottom pulley wabbles
  213. how do i remove the...
  214. Click noise when AC is on?
  215. Coolant Problem??
  216. Very low refridgerant?? Please advise.
  217. need help Removing Harmonic Balancer
  218. not so, everyday cadillac problems
  219. OK Here Comes The Problems before summer.
  220. Can someone tell me what GM PN's 1052080 & 12345382 are?
  221. DTC P1377 - IC Cam Pulse To 4X Reference Pulse
  222. 4.0 cam swap/exhaust size
  223. Northstar Intake manifold
  224. WTB: 4.6L Northstar intake manifold (1993 Eldorado)
  225. Two Error Codes
  226. 4.9 better than Northstar?
  227. Bad Smog result
  228. A/C Question
  229. Help! Theft System Problem - Can't Start My 97 Concours
  230. anybody watch TLC Rides yesterday?
  231. Jury rigged solution
  232. F/S 2000 Northstar engine
  233. Engine Tick after oil change - very concerned
  234. Can't track down these error codes
  235. Case halves repair at 100,000 miles?
  236. 1996 Deville PCM 0717
  237. Long cranking, poor start
  238. Need northstar balancer install tools.
  239. What does the 97 STS Run?
  240. 2 codes
  241. If you can get a filter from the dealer
  242. Resetting "low refridgerant" code??
  243. Difference between 275 & 300 HP from # on Valve/cam Cover
  244. 96 eldo ,problems abound
  245. timesert vs. helicoil
  246. Whats the correct way to remove Trans ???
  247. possibility of turbocharging a 94
  248. Aurora Recall (Fuel Rail)
  249. fuel pump 96 eldo
  250. What's wrong with my ABS