: Northstar Engines and System Technical Discussion



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