: Northstar Engines and System Technical Discussion



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  1. Oil OIl Everywhere Not a drop to spare
  2. Overheating 95 Seville Sls
  3. Rough idle at start-up
  4. Northstar low oil pressure alarm
  5. Nothstar fairytails
  6. rough idling at lights
  7. Anyone know what "P1320 - IC 4X Reference Circuit Intermittent" means?
  8. Codes p0174, b2102, u1064
  9. Prestone EG coolant "new formula"? for 95 SLS N*
  10. Elusive overheating problem solved/excess oil found
  11. NorthStar Head Bolts
  12. 4.6L Parts Supplier and Availability Question
  13. Torque Convertor removal, problem (96 4.6L)
  14. 4.6 Northstar Time-sert headbolt hole repair kit
  15. My 94 seville idles and runs terrible. I've done everything!
  16. oil consumption cured
  17. How often do I clean the throttle body?
  18. 94 A/C Problem
  19. Flushing radiator 98 deville
  20. Help with codes for an 02 Deville....
  21. 95 Eldo Idle/Acceleration????
  22. I'm sure this has been asked
  23. 1997 stalling problem
  24. 10% Ethanol comes to Northeast U.S.
  25. So I've been using 5W30...
  26. My tranny is FUBAR!
  27. Northstart - Blown Head / Headgasket?
  28. HOW TO: Test/Change TPS (99 STS)
  29. Rebuilt Northstar, No Codes, Poor MPG
  30. 4T80E Torque Converter Removal
  31. 97 ETC Complete Exhaust
  32. help with new car
  33. Fuel mileage (Holy cow!!!)
  34. Radiator Sealant
  35. 2000-2004 crank sensors
  36. Transmission squeak?
  37. Missing 9 HP
  38. How good is K&N filters... really?
  39. Leaking anti-freeze poss waterpump area
  40. Timeserts
  41. L37 gear shifts at what speeds?
  42. Rough cold idle...
  43. help in determing this motor
  44. Is there any interest in 93-95 bored throttle bodies?
  45. Temp gauge issue (Question 2)
  46. Fuel gauge issue (Question 1)
  47. Coolant boiling out of overflow
  48. upgrades...K+N =BAD???
  49. Well im alive...
  50. 1999 deville North** lost mileage
  51. Actual N* engine swaps
  52. Coolant Leak
  53. Just bought my first Cadillac-Has green coolant
  54. Any increase MPG tips?
  55. why ios engine running hotter than before
  56. where is the thermostat located in 2003 deville
  57. how to change coolant in 2003 deville
  58. Head Gasket Going
  59. difference between 275 and 300hp N*?
  60. 96-98 Intake parts
  61. Why is the Northstar "better" than the Intech?
  62. Post 2000 N*?
  63. Motor Mount Question
  64. A/C Question 1994 STS
  65. real fast idle
  66. So I Put My Sled On The Dyno Today..
  67. N* Supercharger and Turbo Systems!?!
  68. 93 N* AC bypass belt?
  69. How come N* isn't used in more vehicles?
  70. Switched to Mobil-1 and oil consumption dropped
  71. 2000 deville dts (Engine runs rough when 1st started)
  72. 2 mufflers for cosmetics or performance?
  73. Northstar upgrades?
  74. How difficult is this?
  75. It won't fire!!!!
  76. Northstar stands alone?
  77. Engine on or off during On Board Diagnostics?
  78. timing pics, homemade locating pins, please look
  79. HELP! Need part number........
  80. AC Recharging Help
  81. About those electric superchargers...
  82. Possibly the best sounding N*?
  83. $660 tune up for 95 STS??!!
  84. Engine Temp. Sensor
  85. When do I replace the AC Compressor
  86. 94 SLS 4.6l, code P071
  87. 130mph??
  88. oil filter adapter
  89. 94 to 97 Northstar interchange question
  90. Bad batch of DELCO PLATINUM 41-950 SPARK PLUGS
  91. How long should plugs/wires last?
  92. Easy question - which is right and which is left?
  93. Tell me how to do a WOT.
  94. How did this guy do burnouts?
  95. 95 Eldorado occasional starting problem.
  96. Coolant change Air purging?
  97. two torque sequences?
  98. mystery oil leak
  99. Still Can't Get The Front Valve Cover Off!!!
  100. Ignition System Problems
  101. This sounds dumb but I'm gonna ask anyway - air intake question
  102. A/C recharge
  103. API grades
  104. Engine Difference between 97' & 99' STS?
  105. part# for speedy sleeve
  106. Post Head gasket job (need Veteran rebuilders advise)
  107. 94 concours acting up..
  108. Trans Question 01 DTS
  109. Engine Error Codes...Please Help
  110. 4.6 L NorthStar Engine Design Questions
  111. multi miss fire multi codes 1996 dev
  112. Have a big ?
  113. What does it all mean?
  114. Metal flakes in engine oil
  115. latest lower end seal job procedure
  116. OBDII Tuner software for Northstar.
  117. Poor gas mileage in aurora 4.0
  118. Northstar Head Gasket, which side, which jug is more common
  119. Code P1415 help?
  120. need new O2s
  121. 2002 Deville transmission
  122. Wanted:1999 4.6 NorthStar leak-down values
  123. MAP Sensor relocation
  124. Can someone explain HOW my injectors went bad?
  125. Bad Mileage Not Fpr
  126. 1999 Cadillac STS Exhaust Mufflers
  127. 4t80e production changes 95-9
  128. Manifolds are melting my car
  129. Check Atf
  130. Putting Northstar on an Engine Stand
  131. Headgasket job +++?
  132. northstar swap into another car, a few questions
  133. 2002 Seville STS Cataylst Issues
  134. Engine Temperatures
  135. Can a 1999 4.6L Northstar "Y" be replaced/exchanged with a "9" of the same year
  136. Amsoil nano-filters (air & oil)
  137. DELCO PLATINUM #41-950 SPARK PLUGS from eBay
  138. 93 Water Pump Confusion
  139. How to check for bad ignition coil?
  140. 94 Eldorado surge in engine and 4 codes
  141. Questions On Crank Shafts
  142. weird start problem that occured
  143. northstar head switching
  144. Northstar 4.6 Interchange and Swapping
  145. Car Farts After WOT
  146. 1999 Northstar engine 85K Miles, How can one tell if is good
  147. 03 Seville Steering Adjustments? ? ?
  148. On My 3 Rear Main Seal
  149. 96 sts crankshaft position sensors
  150. any tranny experts out there?
  151. Fpr For $141.08
  152. Water pump
  153. Rwd N*
  154. Coolant Drain
  155. Coolant Leak 98 Deville
  156. so any chance of an AFC
  157. AC Compressor bypass
  158. 3.5L Shortstar Ignition
  159. Sound
  160. Northstar reliability...
  161. Name That Part
  162. Post headgasket job, one loose end left.
  163. Need re-assembly advise!
  164. Minor starting problem
  165. does it work? (hyper lube)
  166. 96 cadillac deville code after code?!?
  167. Transmission Durability?
  168. Shaky Tachometer at High RPM
  169. 1996 Seville STS Crank Sensors
  170. What other cars use the same style injectors?
  171. Adding Freon
  172. Lost power steering fluid rapidly. Is there a hose?
  173. Northstar engine rebuilders or performance builders in SoCal?
  174. 95 Northstar Coolant leak
  175. EXP ID Codes
  176. Looking for N*mech in northern RI
  177. 93 Eldorado T.C ignition issues
  178. voltage drops when car in drive
  179. after a&b solenoid
  180. Experts please help
  181. 1994 Cadillac Sevile STS thumping into fourth/overdrive
  182. know it all mechanic
  183. Well fellas, I think its really time....
  184. Northstar Head Gasket Issue
  185. timesert kit - for sale on ebay
  186. Strange rattling
  187. Northstar performance parts
  188. Procedure for Coolant flush
  189. Dynomax - Long life?
  190. Running Functional Test on my 94 Deville Concours.
  191. 94 northstar swap
  192. Airbox Computer?
  193. ICM Replacement
  194. Cranks, but won't start
  195. 96 deville antifreeze coming out exhaust
  196. Its Getting Hot Inside
  197. STS fuel Injection problem NEED HELP
  198. I think I'm missing a few ponies!
  199. 99 Deville Hesitating???
  200. Eliminating the exhaust crossover??
  201. Po138???
  202. Front Valve Cover Removal
  203. You guys read this stuff????
  204. camshaft swap "9" motor to "Y" motor
  205. What is TSB 99-06-04-053?
  206. 94 cadillac concours
  207. Can anyone tell me what these compression numbers mean?
  208. H Gasket Job Ballpark Price Needed for Parts
  209. Heater core replacement, help!
  210. Ah, darn... My 94 Eldorado Is having problems.
  211. Anyone know a reputable transmission shop in Orlando?
  212. Lifter?valve noise
  213. 93 Northstar dies out at idle
  214. Time Sert Kit Needed
  215. Engine Replacement
  216. Broken Head Bolt (small type)
  217. P0741 - TCC System Stuck Off...Now What??
  218. homemade locating dowels - a possibility?
  219. Rear Valve Cover Leak!!
  220. Going from a 4.0 to a 4.6
  221. how many miles on your N*?
  222. Crank Position Sensor Replace Quick Question...
  223. 98 STS code P0404 (and P0300)
  224. Not Nearly As Hard As I Thought
  225. what to do about SO codes...
  226. overfilled tranny....
  227. OBD1 chip reprogramming?
  228. Hey Check Out What Im Doing....
  229. 95-6 transmission harness
  230. new headbolts
  231. Torque Converter Clutch Stuck...How to Fix??
  232. BS? "aftermarket Mass Air Sensor = improved hp, torque and mileage from your car"
  233. pulling engine, top or bottom???
  234. RANGER: Can't Identify Codes...
  235. 1996 1/8th mile times!
  236. '96 SDV Update...2 Codes...Help??
  237. Need a new alternator......
  238. Cranking but not starting.. fuel pump relay?
  239. EXP ID 83, 84, 140, 25 ??? Any Help?
  240. timesert kit for sale
  241. Factory Specs for Compression??
  242. torque wrench advice
  243. Stripped Oil Pan Bolt Hole
  244. Would you like some cheese and crackers with that Whine?
  245. Ready to rebuild-best source for tserts and bearings
  246. Stability Reduced? wut?
  247. Compression numbers for the North*
  248. Options to repair ONE engine block thread
  249. What ever happened to the supercarger for N*?
  250. Torquing of Rocker????