: Northstar Engines and System Technical Discussion



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  1. Apparent Coolant Leak Below Water Pump
  2. What makes the Headgaskets go so often on early N*s?
  3. Engine Service Soon light on but no codes??? 94 Concours
  4. Perfect exahust flow for 1999 STS?
  5. 94 N* Eldo - Thought was Head Gasket! WAS NOT! My experience!
  6. oil pressure or electrical problems?
  7. Starting Problem
  8. Coolant leak 94 Concours
  9. Bar's Leaks, block seal: Head Gasket Repair ???
  10. Starter problem with '97 STS
  11. Caddy Northstar LMP 4.0 turbo
  12. I can't drive 55 (very far)
  13. Coolant Spuing
  14. Block Drain Plug- Coolant 4.6L
  15. Vacuum Harness????
  16. Piston Slapping site
  17. Help Again Bbobynski !! - Tranny Codes
  18. ? on buying a northstar engine
  19. Improve gas mileage with water??? Stupid or Scientific?
  20. Major head gasket problem
  21. 4.6 liters 300hp... 2.0 liters 200hp
  22. OBD II computer
  23. a question
  24. Oxytane?
  25. What Engines Can I Use???
  26. Oil getting sucked in through PCV Valve: Old Mechanic's Tale?!
  27. Fuel Rail Leak
  28. Rotten Egg
  29. '95 eldo TC fuel smell in cabin & hard-start
  30. can i use marvel mystery oil?
  31. Pros/cons Of Waterwetter For Northstar
  32. Over Heat Feature
  33. Torque Convertor Viscous?
  34. Can't find IP, TC, PZ, RS code info
  35. P056 easy fix
  36. Northstar misfire and backfire
  37. Throttle body size question, and HEADERS-where can I find some?????
  38. 93-94 wrist pin problems????
  39. Brand New Northstar Engine For $2500
  40. gunning cadillacs...was it NOT worth it? :-\
  41. Intake Assembly
  42. can 94 interchange with one another.
  43. Back fire in the induction system
  44. Caddy won't go into Overdrive Any ideas?
  45. Fastchip vs Superchip ...
  46. Coolant temp 250 is this too high? No warnings and fans on low?
  47. 0-60 specs: 95' N* impressive
  48. Swaping A From Y To 9
  49. need help
  50. 2000 Dts 60k Service?!?!?
  51. Revised Emissions Woes
  52. Any GM/Cadillac certified mechanics on board? PLEASE HELP
  53. Chip for Eldo 95 LE
  54. 97 SLS Stalls Only On Hot Days
  55. Throttle body cleaning question
  56. Oil Pan Gasket Change
  57. Who agrees that the Northstar is due for an overhaul by Cadillac?
  58. High Speed fan switch not working/working well
  59. 94 concours has no warning info messages!!!!
  60. Reasons for a/c compressor inop ?
  61. Q. for anyone who knows re: FWD N* - Why Transverse?
  62. 93 seville driving on its own
  63. engine temp?
  64. Down To The Wire: last minute thoughts please
  65. where are the 25 horses
  66. North * reliability?
  67. "Induction Performance Service"?
  68. How do I know if I need the computer updated?
  69. Oil Pressure Drop
  70. ? for those with aftermarket intakes
  71. Coolant Overflow
  72. gunning cadillacs...is it worth it?
  73. 96 Eldorado heating up...
  74. 1994 Eldorado 4.6L Tapping Noise
  75. Cooling Temps.
  76. Hard shift outta 1st
  77. "Weeping" Head Gasket
  78. Obd1
  79. Help With Code 39 Tcc Off
  80. Idle Problems
  81. squeak on 97 deville
  82. crate 2000 Northstar in a 59 Chevy Suburban
  83. cold start/warm start
  84. 1994 SLS 4.6 Oil Pressure Switch Woes
  85. Colours
  86. Odd Tune Up Question
  87. P0741 TCC stuck off
  88. Pre 2000 Northstars
  89. ShadowLvr400
  90. Replace transaxle seals or not?
  91. Vacuum line routing?
  92. Bobynski!
  93. need rebuilt short block-Northstar
  94. aftermarket CPU ???
  95. 2001 deville go fast parts ???
  96. EGR Pintle Stuck????
  97. High Temps?
  98. Gear Shift Position Indicator 1994 STS
  99. Misfire/hesitation
  100. Race day mods?
  101. 97 Sedan Deville oil change
  102. motor idles eratically at start and then dies
  103. Low Oil Pressure 1994 SLS 4.6 144k
  104. Right or left, Help Please!!!
  105. Need Code Info
  106. 1996 sts need help won't start
  107. Engine crud @ head gasket repair
  108. One fan or two?
  109. Failed emissions....plugs and wires...?
  110. General Questoin
  111. Overheating --- Still!!!!!!!!
  112. What are these trouble codes? Help!
  113. AAARRRGHHH...Where's the #$@#) switch?!?!
  114. Help! Dealer wants $$ for recall fuel rail!
  115. Very Long, EBTCM
  116. Northstar Maintenance -Tune Up
  117. K&N filters
  118. Check engine soon ! Why ?
  119. Waterpump reliability
  120. No one can figure it out!!! Help!!!
  121. In need of expertise
  122. SC44 and SC55
  123. why are the northstar engines always catching on fire?
  124. where can i find a 4.6 northstar engine for a 94 eldorado touring coupe. vin 9
  125. 4.9L NorthStar Performance Upgrades???
  126. Need new/rebuilt '96 Seville engine
  127. 100K warranty
  128. Noise from PS pump.
  129. Wanted!! '00+ rear tranny mount
  130. PO 441 error
  131. Help!!
  132. Rubber gone in the top motor mounts
  133. Stop Engine Low oil pressure
  134. Help with fixing a broken shift solenoid
  135. Tranny detent cable question
  136. po29????
  137. '96 STS Engine Stalling - Possible Electrical Problem?
  138. It's time to tear into her!!
  139. Codes PC0300, PC1139, PZ2719
  140. Crack my Block!!!!!!
  141. "Y" code vs. "9" Code
  142. Northstar 97 sls was hard 2 start--now no start
  143. 1997 Seville STS - Oil Leak Problems?
  144. 130k gaskets vs. 88k transplant
  145. Unlimited funds....almost
  146. Service Emissions System
  147. air plenum and coolant...
  148. error codes p0113 &503
  149. Computer codes and more help wanted
  150. coolant and A/C fans broken blades & mounting arms
  151. 1996 Sedan Deville Knock Sensor
  152. Newbie needs help
  153. frozen serpentine belt tensioner
  154. New Northstar, Unleaded or Premium?
  155. Want to buy northstar coils...
  156. Northstar indicates overheat
  157. BBOB - North* Oil Usage Comment
  158. Bad Cylinder?? Low compression?? Need help.
  159. Steam Engine, Now What?
  160. Zero Oil Pressure!! HELP!!
  161. INtake Manifold
  162. N*, Gas drowning my cylinder, getting smoke
  163. 2 Trans oil purge questions...or more?
  164. Erratic Throttle
  165. Strange Readings 1994 Deville Concourse N*
  166. What would a gas coating on a plug mean?
  167. BBOB - thermostat?
  168. Steam from Tail Pipe?
  169. exhaust questions
  170. water pump tool
  171. Cluster Question - Low Oil Pressure
  172. Limp home mode?
  173. Flowmasters?
  174. Flexplate to Torque converter - loctite??
  175. "Check Oil Level" message question
  176. hole in aluminum Radiator - help wanted
  177. Help Eldo Completely Dead But Batt.has Voltage
  178. Rough Idle...Sluggish Acceleration....
  179. Trouble codes
  180. P0741 - TCC System Stuck Off ???
  181. Clueless N* owners with 4 codes
  182. A P059 code?
  183. Longevity of the N* timing chain nylon tensioner pads ?
  184. What type of Power Steering fluid to use in 93 N* Eldo ?
  185. Limp Home Feature?
  186. Last pressure test update - hopefully!!!
  187. How important (really) is an oil cooler?
  188. Cascading multi-module failure-BBOB?
  189. Hesitation when a/c is on?
  190. PCV valve location 2003 Deville
  191. 4T80E Trans neutraling out in Drive/OD
  192. P 028 code AND overheating?
  193. 96 Deville Waterpump belt removal
  194. Is my car misfiring?
  195. Misfire Woes
  196. Another pressure test update
  197. Can dex-cool replace green anti-f?
  198. more head gasket headaches
  199. Egr
  200. More pressure test questions
  201. Nice job on headbolt quality control
  202. 4.0 to 4.6 swap ?
  203. BBOB - did the press test/overheating/????
  204. Timesert kit needed
  205. Tapping Lifters at start
  206. Northstar Gasket Replacement $?
  207. coil packs on 93 ETC?
  208. Eating Oil.......
  209. Eror code p0153
  210. ac only blows worm air
  211. air intake pro's & cons
  212. Brand new N*...
  213. 1997 Seville - Tranny
  214. Head gasket progress/ performance?
  215. Bbob - Tranny Oil Cooler Line Quest.
  216. Eldo idle and low speed running ODD- HELP!
  217. 93 Northstar using 5w-30 ?
  218. Cleaning Engine
  219. when do the fans come on?
  220. Fun with lifters
  221. How badly stripped was your block?
  222. 96 cadillac deville troubles !!!!
  223. Starting Problems- 95 SLS
  224. Fuel Consumption-Tornado Fuel Saver
  225. my s/c 98 sts wow
  226. MSD DIS-4 and/or Interface modules??
  227. Any info on shift improvement kit for 4T80E?
  228. Need a time-sert kit!
  229. Intermittent VSS!!
  230. Lots of exhaust smoke-95 SLS
  231. Who actually designed the Northstar what's his name?
  232. Do N* heads crack EVER?
  233. New Exhaust
  234. Head Studs?
  235. Removing pully?
  236. White "burned" spark plugs?
  237. What Oil?
  238. Variable Valve Northstar question
  239. HELP!! '96 Deville Starting Problem
  240. Nitrous Wet Or Dry???
  241. Help! 94 Concors
  242. !996 Cadillac Deville Exhaust Smoke Problem
  243. RPM steadily increasing (93 N*)
  244. starter
  245. Opinions on head gaskets vs. engine swap?
  246. Water pump 'sound'?
  247. 10% alcohol fuel...bad news
  248. Needed ASAP:Fuel pump replacement for 1996 Deville
  249. Post Tune-Up questions
  250. Half case leak check