: Northstar Engines and System Technical Discussion



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  1. 94 N* Eldo - Thought was Head Gasket! WAS NOT! My experience!
  2. oil pressure or electrical problems?
  3. Starting Problem
  4. Coolant leak 94 Concours
  5. Bar's Leaks, block seal: Head Gasket Repair ???
  6. Starter problem with '97 STS
  7. Caddy Northstar LMP 4.0 turbo
  8. I can't drive 55 (very far)
  9. Coolant Spuing
  10. Block Drain Plug- Coolant 4.6L
  11. Vacuum Harness????
  12. Piston Slapping site
  13. Help Again Bbobynski !! - Tranny Codes
  14. ? on buying a northstar engine
  15. Improve gas mileage with water??? Stupid or Scientific?
  16. Major head gasket problem
  17. 4.6 liters 300hp... 2.0 liters 200hp
  18. OBD II computer
  19. a question
  20. Oxytane?
  21. What Engines Can I Use???
  22. Oil getting sucked in through PCV Valve: Old Mechanic's Tale?!
  23. Fuel Rail Leak
  24. Rotten Egg
  25. '95 eldo TC fuel smell in cabin & hard-start
  26. can i use marvel mystery oil?
  27. Pros/cons Of Waterwetter For Northstar
  28. Over Heat Feature
  29. Torque Convertor Viscous?
  30. Can't find IP, TC, PZ, RS code info
  31. P056 easy fix
  32. Northstar misfire and backfire
  33. Throttle body size question, and HEADERS-where can I find some?????
  34. 93-94 wrist pin problems????
  35. Brand New Northstar Engine For $2500
  36. gunning cadillacs...was it NOT worth it? :-\
  37. Intake Assembly
  38. can 94 interchange with one another.
  39. Back fire in the induction system
  40. Caddy won't go into Overdrive Any ideas?
  41. Fastchip vs Superchip ...
  42. Coolant temp 250 is this too high? No warnings and fans on low?
  43. 0-60 specs: 95' N* impressive
  44. Swaping A From Y To 9
  45. need help
  46. 2000 Dts 60k Service?!?!?
  47. Revised Emissions Woes
  48. Any GM/Cadillac certified mechanics on board? PLEASE HELP
  49. Chip for Eldo 95 LE
  50. 97 SLS Stalls Only On Hot Days
  51. Throttle body cleaning question
  52. Oil Pan Gasket Change
  53. Who agrees that the Northstar is due for an overhaul by Cadillac?
  54. High Speed fan switch not working/working well
  55. 94 concours has no warning info messages!!!!
  56. Reasons for a/c compressor inop ?
  57. Q. for anyone who knows re: FWD N* - Why Transverse?
  58. 93 seville driving on its own
  59. engine temp?
  60. Down To The Wire: last minute thoughts please
  61. where are the 25 horses
  62. North * reliability?
  63. "Induction Performance Service"?
  64. How do I know if I need the computer updated?
  65. Oil Pressure Drop
  66. ? for those with aftermarket intakes
  67. Coolant Overflow
  68. gunning cadillacs...is it worth it?
  69. 96 Eldorado heating up...
  70. 1994 Eldorado 4.6L Tapping Noise
  71. Cooling Temps.
  72. Hard shift outta 1st
  73. "Weeping" Head Gasket
  74. Obd1
  75. Help With Code 39 Tcc Off
  76. Idle Problems
  77. squeak on 97 deville
  78. crate 2000 Northstar in a 59 Chevy Suburban
  79. cold start/warm start
  80. 1994 SLS 4.6 Oil Pressure Switch Woes
  81. Colours
  82. Odd Tune Up Question
  83. P0741 TCC stuck off
  84. Pre 2000 Northstars
  85. ShadowLvr400
  86. Replace transaxle seals or not?
  87. Vacuum line routing?
  88. Bobynski!
  89. need rebuilt short block-Northstar
  90. aftermarket CPU ???
  91. 2001 deville go fast parts ???
  92. EGR Pintle Stuck????
  93. High Temps?
  94. Gear Shift Position Indicator 1994 STS
  95. Misfire/hesitation
  96. Race day mods?
  97. 97 Sedan Deville oil change
  98. motor idles eratically at start and then dies
  99. Low Oil Pressure 1994 SLS 4.6 144k
  100. Right or left, Help Please!!!
  101. Need Code Info
  102. 1996 sts need help won't start
  103. Engine crud @ head gasket repair
  104. One fan or two?
  105. Failed emissions....plugs and wires...?
  106. General Questoin
  107. Overheating --- Still!!!!!!!!
  108. What are these trouble codes? Help!
  109. AAARRRGHHH...Where's the #$@#) switch?!?!
  110. Help! Dealer wants $$ for recall fuel rail!
  111. Very Long, EBTCM
  112. Northstar Maintenance -Tune Up
  113. K&N filters
  114. Check engine soon ! Why ?
  115. Waterpump reliability
  116. No one can figure it out!!! Help!!!
  117. In need of expertise
  118. SC44 and SC55
  119. why are the northstar engines always catching on fire?
  120. where can i find a 4.6 northstar engine for a 94 eldorado touring coupe. vin 9
  121. 4.9L NorthStar Performance Upgrades???
  122. Need new/rebuilt '96 Seville engine
  123. 100K warranty
  124. Noise from PS pump.
  125. Wanted!! '00+ rear tranny mount
  126. PO 441 error
  127. Help!!
  128. Rubber gone in the top motor mounts
  129. Stop Engine Low oil pressure
  130. Help with fixing a broken shift solenoid
  131. Tranny detent cable question
  132. po29????
  133. '96 STS Engine Stalling - Possible Electrical Problem?
  134. It's time to tear into her!!
  135. Codes PC0300, PC1139, PZ2719
  136. Crack my Block!!!!!!
  137. "Y" code vs. "9" Code
  138. Northstar 97 sls was hard 2 start--now no start
  139. 1997 Seville STS - Oil Leak Problems?
  140. 130k gaskets vs. 88k transplant
  141. Unlimited funds....almost
  142. Service Emissions System
  143. air plenum and coolant...
  144. error codes p0113 &503
  145. Computer codes and more help wanted
  146. coolant and A/C fans broken blades & mounting arms
  147. 1996 Sedan Deville Knock Sensor
  148. Newbie needs help
  149. frozen serpentine belt tensioner
  150. New Northstar, Unleaded or Premium?
  151. Want to buy northstar coils...
  152. Northstar indicates overheat
  153. BBOB - North* Oil Usage Comment
  154. Bad Cylinder?? Low compression?? Need help.
  155. Steam Engine, Now What?
  156. Zero Oil Pressure!! HELP!!
  157. INtake Manifold
  158. N*, Gas drowning my cylinder, getting smoke
  159. 2 Trans oil purge questions...or more?
  160. Erratic Throttle
  161. Strange Readings 1994 Deville Concourse N*
  162. What would a gas coating on a plug mean?
  163. BBOB - thermostat?
  164. Steam from Tail Pipe?
  165. exhaust questions
  166. water pump tool
  167. Cluster Question - Low Oil Pressure
  168. Limp home mode?
  169. Flowmasters?
  170. Flexplate to Torque converter - loctite??
  171. "Check Oil Level" message question
  172. hole in aluminum Radiator - help wanted
  173. Help Eldo Completely Dead But Batt.has Voltage
  174. Rough Idle...Sluggish Acceleration....
  175. Trouble codes
  176. P0741 - TCC System Stuck Off ???
  177. Clueless N* owners with 4 codes
  178. A P059 code?
  179. Longevity of the N* timing chain nylon tensioner pads ?
  180. What type of Power Steering fluid to use in 93 N* Eldo ?
  181. Limp Home Feature?
  182. Last pressure test update - hopefully!!!
  183. How important (really) is an oil cooler?
  184. Cascading multi-module failure-BBOB?
  185. Hesitation when a/c is on?
  186. PCV valve location 2003 Deville
  187. 4T80E Trans neutraling out in Drive/OD
  188. P 028 code AND overheating?
  189. 96 Deville Waterpump belt removal
  190. Is my car misfiring?
  191. Misfire Woes
  192. Another pressure test update
  193. Can dex-cool replace green anti-f?
  194. more head gasket headaches
  195. Egr
  196. More pressure test questions
  197. Nice job on headbolt quality control
  198. 4.0 to 4.6 swap ?
  199. BBOB - did the press test/overheating/????
  200. Timesert kit needed
  201. Tapping Lifters at start
  202. Northstar Gasket Replacement $?
  203. coil packs on 93 ETC?
  204. Eating Oil.......
  205. Eror code p0153
  206. ac only blows worm air
  207. air intake pro's & cons
  208. Brand new N*...
  209. 1997 Seville - Tranny
  210. Head gasket progress/ performance?
  211. Bbob - Tranny Oil Cooler Line Quest.
  212. Eldo idle and low speed running ODD- HELP!
  213. 93 Northstar using 5w-30 ?
  214. Cleaning Engine
  215. when do the fans come on?
  216. Fun with lifters
  217. How badly stripped was your block?
  218. 96 cadillac deville troubles !!!!
  219. Starting Problems- 95 SLS
  220. Fuel Consumption-Tornado Fuel Saver
  221. my s/c 98 sts wow
  222. MSD DIS-4 and/or Interface modules??
  223. Any info on shift improvement kit for 4T80E?
  224. Need a time-sert kit!
  225. Intermittent VSS!!
  226. Lots of exhaust smoke-95 SLS
  227. Who actually designed the Northstar what's his name?
  228. Do N* heads crack EVER?
  229. New Exhaust
  230. Head Studs?
  231. Removing pully?
  232. White "burned" spark plugs?
  233. What Oil?
  234. Variable Valve Northstar question
  235. HELP!! '96 Deville Starting Problem
  236. Nitrous Wet Or Dry???
  237. Help! 94 Concors
  238. !996 Cadillac Deville Exhaust Smoke Problem
  239. RPM steadily increasing (93 N*)
  240. starter
  241. Opinions on head gaskets vs. engine swap?
  242. Water pump 'sound'?
  243. 10% alcohol fuel...bad news
  244. Needed ASAP:Fuel pump replacement for 1996 Deville
  245. Post Tune-Up questions
  246. Half case leak check
  247. o2 Sensor Help
  248. Throttle Body?- 95 SLS
  249. HELP! 5-6 sec. Cold Starts
  250. My car is about to get sold.