: Northstar Engines and System Technical Discussion



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