: Northstar Engines and System Technical Discussion



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  1. I got the codes, now what?
  2. Evap Soleniod
  3. 94 Concours getting 13 MPG What could be wrong?
  4. pcv valve
  5. Oil Amount Debate, Do you put in 7.5 quarts or less at oil change?
  6. What is code p1645 mean
  7. Oil change and coolant
  8. CHanging the top-speed cut-out.
  9. how much extra HP will i get
  10. Used northstar
  11. 94 STS bogging and stalling?
  12. Overheating-head gaskets-screw it!!!
  13. ETC Crossover Leak
  14. Fuel Rail Recall Update
  15. Norstar governor
  16. 2005 Bonneville gets N*
  17. Fuel Rail Recall Missinformation
  18. Scan Tool Questions
  19. CARFAX (engine / car serial Numbers)
  20. Who has done a lot of mods to NS powered cars?
  21. Oxygen sensor problems
  22. All was fine until... hard cold start prob
  23. No orange light in Park, D, 2,1 in cluster on Concours?
  24. new 99 eng for 97 how much is different?
  25. 96 deville error codes P0147 and P0146, where do I look?
  26. po741 error shifting problem
  27. Leaking coolant
  28. Cat-back systems
  29. Throttle Body Cleaning
  30. coolant temp sensor
  31. carfaxing a used northstar
  32. Exhaust crossover
  33. 1994 sts 94K miles overheating
  34. Timesert kit for sale
  35. rough idle
  36. IPC lights ....out
  37. 96 sts transmission
  38. Fuel Rail Recall, just got the letter
  39. Changing That Water Pump Belt
  40. headgasket repairs
  41. Traction Control & a code.....
  42. newb looking for part numbers
  43. Solenoid/Valve Body/Trans Pan Pics!!!!!!!!
  44. Volant Air Intake
  45. Oil pressure check
  46. replacing my 96 northstar
  47. Where is it all?
  48. Will I suck her dry if....
  49. Shift Solenoid Kit Pics of Parts!!!!
  50. About to kick my caddy
  51. 98 STS Has DIC That Still Registers 100% Trans Fluid Life
  52. Northstar missing at idle
  53. Fuel Rail Leak on 98 Deville!!!
  54. Best Bar's Leak...C16 Liquid
  55. To replace or repair the n. star
  56. 97 Deville Question
  57. northstar extended warranty
  58. Noticeably Better Gas Mileage..On 10 yr old+ Engine!?
  59. Gas miles -- Standard DeVille vs DTS
  60. Changing out Fuel Rail??
  61. intake manifold bolt torque?
  62. Strange Things Happing
  63. Gas pedal click
  64. Starting to get rough idle
  65. Fixin' to pull the engine
  66. Head Gasket Leak : NO OVERHEAT with coolant supplement
  67. TPS replacement problem
  68. Fuel Leak
  69. Northstar transplant and electronics
  70. Best way to prevent an oil leak on N*?
  71. 180F or 195F Thermostat for 94 N*?
  72. Misfiring and Service Engine light
  73. Coils / Intermittent "missing" on my 99 STS
  74. Hey Hotrodelectric
  75. Northstar Expectancy
  76. Code P094 Shift A Solenoid Speed Sensor Where and what is it 94 Concours?
  77. Ac
  78. Apparent Coolant Leak Below Water Pump
  79. What makes the Headgaskets go so often on early N*s?
  80. Engine Service Soon light on but no codes??? 94 Concours
  81. Perfect exahust flow for 1999 STS?
  82. 94 N* Eldo - Thought was Head Gasket! WAS NOT! My experience!
  83. oil pressure or electrical problems?
  84. Starting Problem
  85. Coolant leak 94 Concours
  86. Bar's Leaks, block seal: Head Gasket Repair ???
  87. Starter problem with '97 STS
  88. Caddy Northstar LMP 4.0 turbo
  89. I can't drive 55 (very far)
  90. Coolant Spuing
  91. Block Drain Plug- Coolant 4.6L
  92. Vacuum Harness????
  93. Piston Slapping site
  94. Help Again Bbobynski !! - Tranny Codes
  95. ? on buying a northstar engine
  96. Improve gas mileage with water??? Stupid or Scientific?
  97. Major head gasket problem
  98. 4.6 liters 300hp... 2.0 liters 200hp
  99. OBD II computer
  100. a question
  101. Oxytane?
  102. What Engines Can I Use???
  103. Oil getting sucked in through PCV Valve: Old Mechanic's Tale?!
  104. Fuel Rail Leak
  105. Rotten Egg
  106. '95 eldo TC fuel smell in cabin & hard-start
  107. can i use marvel mystery oil?
  108. Pros/cons Of Waterwetter For Northstar
  109. Over Heat Feature
  110. Torque Convertor Viscous?
  111. Can't find IP, TC, PZ, RS code info
  112. P056 easy fix
  113. Northstar misfire and backfire
  114. Throttle body size question, and HEADERS-where can I find some?????
  115. 93-94 wrist pin problems????
  116. Brand New Northstar Engine For $2500
  117. gunning cadillacs...was it NOT worth it? :-\
  118. Intake Assembly
  119. can 94 interchange with one another.
  120. Back fire in the induction system
  121. Caddy won't go into Overdrive Any ideas?
  122. Fastchip vs Superchip ...
  123. Coolant temp 250 is this too high? No warnings and fans on low?
  124. 0-60 specs: 95' N* impressive
  125. Swaping A From Y To 9
  126. need help
  127. 2000 Dts 60k Service?!?!?
  128. Revised Emissions Woes
  129. Any GM/Cadillac certified mechanics on board? PLEASE HELP
  130. Chip for Eldo 95 LE
  131. 97 SLS Stalls Only On Hot Days
  132. Throttle body cleaning question
  133. Oil Pan Gasket Change
  134. Who agrees that the Northstar is due for an overhaul by Cadillac?
  135. High Speed fan switch not working/working well
  136. 94 concours has no warning info messages!!!!
  137. Reasons for a/c compressor inop ?
  138. Q. for anyone who knows re: FWD N* - Why Transverse?
  139. 93 seville driving on its own
  140. engine temp?
  141. Down To The Wire: last minute thoughts please
  142. where are the 25 horses
  143. North * reliability?
  144. "Induction Performance Service"?
  145. How do I know if I need the computer updated?
  146. Oil Pressure Drop
  147. ? for those with aftermarket intakes
  148. Coolant Overflow
  149. gunning cadillacs...is it worth it?
  150. 96 Eldorado heating up...
  151. 1994 Eldorado 4.6L Tapping Noise
  152. Cooling Temps.
  153. Hard shift outta 1st
  154. "Weeping" Head Gasket
  155. Obd1
  156. Help With Code 39 Tcc Off
  157. Idle Problems
  158. squeak on 97 deville
  159. crate 2000 Northstar in a 59 Chevy Suburban
  160. cold start/warm start
  161. 1994 SLS 4.6 Oil Pressure Switch Woes
  162. Colours
  163. Odd Tune Up Question
  164. P0741 TCC stuck off
  165. Pre 2000 Northstars
  166. ShadowLvr400
  167. Replace transaxle seals or not?
  168. Vacuum line routing?
  169. Bobynski!
  170. need rebuilt short block-Northstar
  171. aftermarket CPU ???
  172. 2001 deville go fast parts ???
  173. EGR Pintle Stuck????
  174. High Temps?
  175. Gear Shift Position Indicator 1994 STS
  176. Misfire/hesitation
  177. Race day mods?
  178. 97 Sedan Deville oil change
  179. motor idles eratically at start and then dies
  180. Low Oil Pressure 1994 SLS 4.6 144k
  181. Right or left, Help Please!!!
  182. Need Code Info
  183. 1996 sts need help won't start
  184. Engine crud @ head gasket repair
  185. One fan or two?
  186. Failed emissions....plugs and wires...?
  187. General Questoin
  188. Overheating --- Still!!!!!!!!
  189. What are these trouble codes? Help!
  190. AAARRRGHHH...Where's the #$@#) switch?!?!
  191. Help! Dealer wants $$ for recall fuel rail!
  192. Very Long, EBTCM
  193. Northstar Maintenance -Tune Up
  194. K&N filters
  195. Check engine soon ! Why ?
  196. Waterpump reliability
  197. No one can figure it out!!! Help!!!
  198. In need of expertise
  199. SC44 and SC55
  200. why are the northstar engines always catching on fire?
  201. where can i find a 4.6 northstar engine for a 94 eldorado touring coupe. vin 9
  202. 4.9L NorthStar Performance Upgrades???
  203. Need new/rebuilt '96 Seville engine
  204. 100K warranty
  205. Noise from PS pump.
  206. Wanted!! '00+ rear tranny mount
  207. PO 441 error
  208. Help!!
  209. Rubber gone in the top motor mounts
  210. Stop Engine Low oil pressure
  211. Help with fixing a broken shift solenoid
  212. Tranny detent cable question
  213. po29????
  214. '96 STS Engine Stalling - Possible Electrical Problem?
  215. It's time to tear into her!!
  216. Codes PC0300, PC1139, PZ2719
  217. Crack my Block!!!!!!
  218. "Y" code vs. "9" Code
  219. Northstar 97 sls was hard 2 start--now no start
  220. 1997 Seville STS - Oil Leak Problems?
  221. 130k gaskets vs. 88k transplant
  222. Unlimited funds....almost
  223. Service Emissions System
  224. air plenum and coolant...
  225. error codes p0113 &503
  226. Computer codes and more help wanted
  227. coolant and A/C fans broken blades & mounting arms
  228. 1996 Sedan Deville Knock Sensor
  229. Newbie needs help
  230. frozen serpentine belt tensioner
  231. New Northstar, Unleaded or Premium?
  232. Want to buy northstar coils...
  233. Northstar indicates overheat
  234. BBOB - North* Oil Usage Comment
  235. Bad Cylinder?? Low compression?? Need help.
  236. Steam Engine, Now What?
  237. Zero Oil Pressure!! HELP!!
  238. INtake Manifold
  239. N*, Gas drowning my cylinder, getting smoke
  240. 2 Trans oil purge questions...or more?
  241. Erratic Throttle
  242. Strange Readings 1994 Deville Concourse N*
  243. What would a gas coating on a plug mean?
  244. BBOB - thermostat?
  245. Steam from Tail Pipe?
  246. exhaust questions
  247. water pump tool
  248. Cluster Question - Low Oil Pressure
  249. Limp home mode?
  250. Flowmasters?