: Northstar Engines and System Technical Discussion



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