: Northstar Engines and System Technical Discussion



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  1. N2O in my '98 STS
  2. head gasket and maintainence
  3. 1996 Cadillac Seville running hot? (or not) help needed
  4. help! 2500 rpm idle
  5. I got the codes, now what?
  6. Evap Soleniod
  7. 94 Concours getting 13 MPG What could be wrong?
  8. pcv valve
  9. Oil Amount Debate, Do you put in 7.5 quarts or less at oil change?
  10. What is code p1645 mean
  11. Oil change and coolant
  12. CHanging the top-speed cut-out.
  13. how much extra HP will i get
  14. Used northstar
  15. 94 STS bogging and stalling?
  16. Overheating-head gaskets-screw it!!!
  17. ETC Crossover Leak
  18. Fuel Rail Recall Update
  19. Norstar governor
  20. 2005 Bonneville gets N*
  21. Fuel Rail Recall Missinformation
  22. Scan Tool Questions
  23. CARFAX (engine / car serial Numbers)
  24. Who has done a lot of mods to NS powered cars?
  25. Oxygen sensor problems
  26. All was fine until... hard cold start prob
  27. No orange light in Park, D, 2,1 in cluster on Concours?
  28. new 99 eng for 97 how much is different?
  29. 96 deville error codes P0147 and P0146, where do I look?
  30. po741 error shifting problem
  31. Leaking coolant
  32. Cat-back systems
  33. Throttle Body Cleaning
  34. coolant temp sensor
  35. carfaxing a used northstar
  36. Exhaust crossover
  37. 1994 sts 94K miles overheating
  38. Timesert kit for sale
  39. rough idle
  40. IPC lights ....out
  41. 96 sts transmission
  42. Fuel Rail Recall, just got the letter
  43. Changing That Water Pump Belt
  44. headgasket repairs
  45. Traction Control & a code.....
  46. newb looking for part numbers
  47. Solenoid/Valve Body/Trans Pan Pics!!!!!!!!
  48. Volant Air Intake
  49. Oil pressure check
  50. replacing my 96 northstar
  51. Where is it all?
  52. Will I suck her dry if....
  53. Shift Solenoid Kit Pics of Parts!!!!
  54. About to kick my caddy
  55. 98 STS Has DIC That Still Registers 100% Trans Fluid Life
  56. Northstar missing at idle
  57. Fuel Rail Leak on 98 Deville!!!
  58. Best Bar's Leak...C16 Liquid
  59. To replace or repair the n. star
  60. 97 Deville Question
  61. northstar extended warranty
  62. Noticeably Better Gas Mileage..On 10 yr old+ Engine!?
  63. Gas miles -- Standard DeVille vs DTS
  64. Changing out Fuel Rail??
  65. intake manifold bolt torque?
  66. Strange Things Happing
  67. Gas pedal click
  68. Starting to get rough idle
  69. Fixin' to pull the engine
  70. Head Gasket Leak : NO OVERHEAT with coolant supplement
  71. TPS replacement problem
  72. Fuel Leak
  73. Northstar transplant and electronics
  74. Best way to prevent an oil leak on N*?
  75. 180F or 195F Thermostat for 94 N*?
  76. Misfiring and Service Engine light
  77. Coils / Intermittent "missing" on my 99 STS
  78. Hey Hotrodelectric
  79. Northstar Expectancy
  80. Code P094 Shift A Solenoid Speed Sensor Where and what is it 94 Concours?
  81. Ac
  82. Apparent Coolant Leak Below Water Pump
  83. What makes the Headgaskets go so often on early N*s?
  84. Engine Service Soon light on but no codes??? 94 Concours
  85. Perfect exahust flow for 1999 STS?
  86. 94 N* Eldo - Thought was Head Gasket! WAS NOT! My experience!
  87. oil pressure or electrical problems?
  88. Starting Problem
  89. Coolant leak 94 Concours
  90. Bar's Leaks, block seal: Head Gasket Repair ???
  91. Starter problem with '97 STS
  92. Caddy Northstar LMP 4.0 turbo
  93. I can't drive 55 (very far)
  94. Coolant Spuing
  95. Block Drain Plug- Coolant 4.6L
  96. Vacuum Harness????
  97. Piston Slapping site
  98. Help Again Bbobynski !! - Tranny Codes
  99. ? on buying a northstar engine
  100. Improve gas mileage with water??? Stupid or Scientific?
  101. Major head gasket problem
  102. 4.6 liters 300hp... 2.0 liters 200hp
  103. OBD II computer
  104. a question
  105. Oxytane?
  106. What Engines Can I Use???
  107. Oil getting sucked in through PCV Valve: Old Mechanic's Tale?!
  108. Fuel Rail Leak
  109. Rotten Egg
  110. '95 eldo TC fuel smell in cabin & hard-start
  111. can i use marvel mystery oil?
  112. Pros/cons Of Waterwetter For Northstar
  113. Over Heat Feature
  114. Torque Convertor Viscous?
  115. Can't find IP, TC, PZ, RS code info
  116. P056 easy fix
  117. Northstar misfire and backfire
  118. Throttle body size question, and HEADERS-where can I find some?????
  119. 93-94 wrist pin problems????
  120. Brand New Northstar Engine For $2500
  121. gunning cadillacs...was it NOT worth it? :-\
  122. Intake Assembly
  123. can 94 interchange with one another.
  124. Back fire in the induction system
  125. Caddy won't go into Overdrive Any ideas?
  126. Fastchip vs Superchip ...
  127. Coolant temp 250 is this too high? No warnings and fans on low?
  128. 0-60 specs: 95' N* impressive
  129. Swaping A From Y To 9
  130. need help
  131. 2000 Dts 60k Service?!?!?
  132. Revised Emissions Woes
  133. Any GM/Cadillac certified mechanics on board? PLEASE HELP
  134. Chip for Eldo 95 LE
  135. 97 SLS Stalls Only On Hot Days
  136. Throttle body cleaning question
  137. Oil Pan Gasket Change
  138. Who agrees that the Northstar is due for an overhaul by Cadillac?
  139. High Speed fan switch not working/working well
  140. 94 concours has no warning info messages!!!!
  141. Reasons for a/c compressor inop ?
  142. Q. for anyone who knows re: FWD N* - Why Transverse?
  143. 93 seville driving on its own
  144. engine temp?
  145. Down To The Wire: last minute thoughts please
  146. where are the 25 horses
  147. North * reliability?
  148. "Induction Performance Service"?
  149. How do I know if I need the computer updated?
  150. Oil Pressure Drop
  151. ? for those with aftermarket intakes
  152. Coolant Overflow
  153. gunning cadillacs...is it worth it?
  154. 96 Eldorado heating up...
  155. 1994 Eldorado 4.6L Tapping Noise
  156. Cooling Temps.
  157. Hard shift outta 1st
  158. "Weeping" Head Gasket
  159. Obd1
  160. Help With Code 39 Tcc Off
  161. Idle Problems
  162. squeak on 97 deville
  163. crate 2000 Northstar in a 59 Chevy Suburban
  164. cold start/warm start
  165. 1994 SLS 4.6 Oil Pressure Switch Woes
  166. Colours
  167. Odd Tune Up Question
  168. P0741 TCC stuck off
  169. Pre 2000 Northstars
  170. ShadowLvr400
  171. Replace transaxle seals or not?
  172. Vacuum line routing?
  173. Bobynski!
  174. need rebuilt short block-Northstar
  175. aftermarket CPU ???
  176. 2001 deville go fast parts ???
  177. EGR Pintle Stuck????
  178. High Temps?
  179. Gear Shift Position Indicator 1994 STS
  180. Misfire/hesitation
  181. Race day mods?
  182. 97 Sedan Deville oil change
  183. motor idles eratically at start and then dies
  184. Low Oil Pressure 1994 SLS 4.6 144k
  185. Right or left, Help Please!!!
  186. Need Code Info
  187. 1996 sts need help won't start
  188. Engine crud @ head gasket repair
  189. One fan or two?
  190. Failed emissions....plugs and wires...?
  191. General Questoin
  192. Overheating --- Still!!!!!!!!
  193. What are these trouble codes? Help!
  194. AAARRRGHHH...Where's the #$@#) switch?!?!
  195. Help! Dealer wants $$ for recall fuel rail!
  196. Very Long, EBTCM
  197. Northstar Maintenance -Tune Up
  198. K&N filters
  199. Check engine soon ! Why ?
  200. Waterpump reliability
  201. No one can figure it out!!! Help!!!
  202. In need of expertise
  203. SC44 and SC55
  204. why are the northstar engines always catching on fire?
  205. where can i find a 4.6 northstar engine for a 94 eldorado touring coupe. vin 9
  206. 4.9L NorthStar Performance Upgrades???
  207. Need new/rebuilt '96 Seville engine
  208. 100K warranty
  209. Noise from PS pump.
  210. Wanted!! '00+ rear tranny mount
  211. PO 441 error
  212. Help!!
  213. Rubber gone in the top motor mounts
  214. Stop Engine Low oil pressure
  215. Help with fixing a broken shift solenoid
  216. Tranny detent cable question
  217. po29????
  218. '96 STS Engine Stalling - Possible Electrical Problem?
  219. It's time to tear into her!!
  220. Codes PC0300, PC1139, PZ2719
  221. Crack my Block!!!!!!
  222. "Y" code vs. "9" Code
  223. Northstar 97 sls was hard 2 start--now no start
  224. 1997 Seville STS - Oil Leak Problems?
  225. 130k gaskets vs. 88k transplant
  226. Unlimited funds....almost
  227. Service Emissions System
  228. air plenum and coolant...
  229. error codes p0113 &503
  230. Computer codes and more help wanted
  231. coolant and A/C fans broken blades & mounting arms
  232. 1996 Sedan Deville Knock Sensor
  233. Newbie needs help
  234. frozen serpentine belt tensioner
  235. New Northstar, Unleaded or Premium?
  236. Want to buy northstar coils...
  237. Northstar indicates overheat
  238. BBOB - North* Oil Usage Comment
  239. Bad Cylinder?? Low compression?? Need help.
  240. Steam Engine, Now What?
  241. Zero Oil Pressure!! HELP!!
  242. INtake Manifold
  243. N*, Gas drowning my cylinder, getting smoke
  244. 2 Trans oil purge questions...or more?
  245. Erratic Throttle
  246. Strange Readings 1994 Deville Concourse N*
  247. What would a gas coating on a plug mean?
  248. BBOB - thermostat?
  249. Steam from Tail Pipe?
  250. exhaust questions