: Northstar Engines and System Technical Discussion



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  1. What does a PCV valve do?
  2. 97 deville- Loud clunk followed by surging....
  3. Rattle in front of engine on first start up? Help!!
  4. Looking for performance items for the Northstar
  5. New revised Head Torque Procedure
  6. Torque Converter Stall for STS
  7. Carbon knock and 1 quart per 1.000 miles
  8. Stumped!! - problem setting cam timing
  9. Cleaned throttle body, lots of gunk...
  10. 94 STS Rough Idle, Jerking in overdrive with no load on moter!
  11. 96 Deville o2 Sensor question
  12. o2 sensor problems
  13. How common are the "Z" speed rated NorthStar's
  14. Diagnostic Code help
  15. Hard Shifting Problem 98 STS
  16. New 04" 4.6 vs previous 3 less MPG?
  17. Walker Quiet Flow Mufflers?
  18. Hard starting '96 Seville STS - Advice sought
  19. Oil in intake manifold (eek!?)
  20. Birds nest under my intake. 94 STS
  21. engine swapp
  22. northstar 4.6 1994 eldorado touring coupe
  23. 94 STS Where is my egr valve!
  24. Safety Recall: Aurora 4.0 - Fuel rail leaks
  25. 2000 Deville Stalls when idleing in drive
  26. 4.6 northstar engine
  27. Cases resealed and new style pistons?
  28. horrible surging
  29. AC blower keeps cutting off
  30. Supercharged, need 93-95 4.6L intake manifold top cover to modify HELP!!
  31. 97 Y NorthStar backfire
  32. abs/tcs fuse
  33. 93 STS with 4.6 sounds runs like crap, dies constantly!
  34. Dropping cradle - where's the other wiring?
  35. Trans too full!!!96 eldo
  36. Whats this all about???
  37. Is adding too much oil bad?
  38. More Power *grunt*!!!!
  39. What's wrong with my ABS
  40. fuel pump 96 eldo
  41. Aurora Recall (Fuel Rail)
  42. possibility of turbocharging a 94
  43. Whats the correct way to remove Trans ???
  44. timesert vs. helicoil
  45. 96 eldo ,problems abound
  46. Difference between 275 & 300 HP from # on Valve/cam Cover
  47. Resetting "low refridgerant" code??
  48. If you can get a filter from the dealer
  49. 2 codes
  50. What does the 97 STS Run?
  51. Need northstar balancer install tools.
  52. Long cranking, poor start
  53. 1996 Deville PCM 0717
  54. Case halves repair at 100,000 miles?
  55. Can't track down these error codes
  56. Engine Tick after oil change - very concerned
  57. F/S 2000 Northstar engine
  58. Jury rigged solution
  59. anybody watch TLC Rides yesterday?
  60. Help! Theft System Problem - Can't Start My 97 Concours
  61. A/C Question
  62. Bad Smog result
  63. 4.9 better than Northstar?
  64. Two Error Codes
  65. WTB: 4.6L Northstar intake manifold (1993 Eldorado)
  66. Northstar Intake manifold
  67. 4.0 cam swap/exhaust size
  68. DTC P1377 - IC Cam Pulse To 4X Reference Pulse
  69. Can someone tell me what GM PN's 1052080 & 12345382 are?
  70. OK Here Comes The Problems before summer.
  71. not so, everyday cadillac problems
  72. need help Removing Harmonic Balancer
  73. Very low refridgerant?? Please advise.
  74. Coolant Problem??
  75. Click noise when AC is on?
  76. how do i remove the...
  77. bottom pulley wabbles
  78. BCM causing rough idle?
  79. Water Pump Drive Pulley
  80. 98 SLS Trans/mounts Questions
  81. So how many people have had overheating/bad head gasket problems?
  82. Car Rides Horribly!
  83. PO85 Fix
  84. NEW exhaust idea...
  85. Northstar vs 4.9
  86. 4T80e questions
  87. check engine light
  88. Rough Idle
  89. More oil consumption
  90. Is it stupid to put in a new engine?????
  91. Advise on De Ville 97
  92. Oil filter
  93. Service Manuals
  94. Transmission Valve (or what the dealer told me)
  95. wierd idle
  96. Miracle fuel additive stopped noise and oil consumption
  97. 95 eldorado oil questions
  98. 95 Harness --> 93 Block/sensors?
  99. Kit Car w/Northstar, Engine VIN codes
  100. EGR Valve and Throttle Body
  101. Heater core?
  102. sticky gas pedal/rough idling/accelerating
  103. Head Bolts????
  104. OEM Liquid Sealant at Case Half Seal?
  105. Throttle Body, Rough Idle
  106. 97 air box mod?
  107. throttle body
  108. Head Gasket Repair - Clean Up of Head, Block & Combustion Chambers?
  109. How good is the 4.6L N*
  110. Seville ECM Codes
  111. Trouble Code on '96 Eldorado
  112. tranny probs need help
  113. Unidentified noise in front driver side wheel on a hard right
  114. spark plug gap?
  115. need timesert kit for my 94 n*
  116. 1993 Northstar engine knock
  117. Code IRC B1771
  118. Excessive Crank Time - Advice Needed
  119. Cost Efficient Mods for '98 STS?
  120. Pls help! How much $ should it cost to repair.....
  121. trouble code retrival
  122. Iridium spark plugs
  123. Sedan Deville Diag Codes: How to interpret?
  124. Boosted caddys
  125. 95 sts,pcm?
  126. Northstar Mechanic
  127. 96 ETC code problems
  128. Codes
  129. Help with Timing Chain Removal
  130. help me with my ....
  131. It just quits (dies) restarts fine.
  132. fuel economy
  133. radiator with holes
  134. supercharged caddy?
  135. A few questions 2
  136. A little more Fuel or air needed.
  137. Is there anywhere to get the specs for a 4.6L Northstar
  138. Brake Fluid Flush
  139. GM part no. for timesert inserts?
  140. God ! please help me before my caddy kills me..
  141. 2000+ NorthStar modified to fit 1994 = success
  142. Lots O'Codes HELP!!!
  143. Coolant Change
  144. cruise control not working properly!
  145. Need help with codes
  146. i smell coolant, is my water pump bad?
  147. Crank micropolishing/where to buy parts?
  148. New Lights
  149. O2 sensor
  150. 95 eldorado Northstar over heats
  151. What to do, what to do...
  152. Main Bearing Replacement?
  153. Rear Main Seal Installer
  154. Looking for a few answers
  155. Help!!!
  156. 94 Seville
  157. My 1996 Sedan Deville won't go over 40 mph?
  158. Northstar and CHRFAB article
  159. 94 eldo compression test
  160. Ignition Wires
  161. Ran my STS again
  162. how long....
  163. 1994 Deville oil pan gasket leak
  164. Leaky oil pan gasket on 94 N* eldo
  165. Service Ride Control and traction control
  166. Some initial worries for 94 eldo tc
  167. some problems
  168. computer readout !!!
  169. Thottle Body
  170. Where to find a Northstar engine
  171. Rough Idel
  172. My 99 STS Overheated
  173. Engine Mounts
  174. oil pan gasket
  175. 94 Deville Concourse Billowing White Smoke
  176. cheap perfomance stuff...
  177. Coolant smell from heater; how screwed am I?
  178. Changing the fuel filter
  179. How to do a tuneup on a North*
  180. '96 SLS: IPC Option C problem
  181. Northstar Oil Usage
  182. Buzzing from turn signal
  183. Engine Data Analysis help
  184. 94 eldorado W/coolant in oil
  185. Growe3, Engine Removal Questions
  186. My .02 on Carbon
  187. N* plugs & wires: DIY or leave it for the pros?
  188. MAP sensor
  189. Lucus Products? Fuel Injector Cleaner
  190. Need Northstar Advic
  191. questions before installing new idle speed motor
  192. 94' Sls Pcm
  193. my first mod
  194. coolant leak - is this a bad fix?
  195. 96 Eldorado Oil leak
  196. Northstar dimensions
  197. Mechanic needs help, NS killing ICM
  198. Just told driveshaft is shot. What should I do?
  199. Timesert kit FS! $130 Shipped!
  200. Is my mechanic pulling a 'fast one'?
  201. Sluggish when driving
  202. 1998 Cai??
  203. Error Codes, Diagnostic Mode, RKE Programming, Owners Manuals, General Info
  204. Error Codes and Diagnostic Mode Explained
  205. Head bolt retorque method recommendation needed
  206. Is New Exhaust Hurting MPG?
  207. 1998 STS A/C Problems
  208. traction control sucks!
  209. tranny troubles in Montana
  210. flashing number on display
  211. Which Fuel Company
  212. Oil pressure problems
  213. No power from Northstar on '98 Deville
  214. bosch 4's????
  215. Oil Under Intake Manifold on Northstar
  216. Complicated spark problem on 94/99 Northstar engine
  217. 96 Eldo Warm Eng. Miss No Codes
  218. Every North* blows head gaskets??????
  219. 97 STS P0300 Current/P0603 History SES light
  220. Shift Solenoid "A" and "B" question
  221. whats the difference
  222. Head gaskets on 1993 Allante Northstar
  223. Got codes Help Please
  224. How do I Access OBCII 98 DeVille
  225. good buy?
  226. Fuel Pressure Loss
  227. Crank Sensor--Revisited
  228. Suddenly running rough
  229. Northstar Stalls On Restart
  230. northstar engine swap info
  231. Yep She's A Leaker
  232. Fuel economy post 60k service?
  233. Fuel rail leak--another thorn in the side
  234. anyon know where i can get a chip?
  235. 4.6 running rough at idle in gear
  236. Codes
  237. wat should i do to my car
  238. Annoying engine noise
  239. How long to check codes?
  240. 93 STS Overheated, now idles high. PLEASE HELP
  241. Engine Stalling at traffic light
  242. Coolant Supplement Tablet question
  243. Trans or can it be Electrical
  244. help wilth coede PO23
  245. my 94 SLS code problems help!!
  246. Transmission help!!
  247. Where is the EGR valve located?
  248. clearing codes
  249. How To Fix Clicking Throttle Body
  250. Where can I buy a new EGR valve at a good price?