: Northstar Engines and System Technical Discussion



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  1. Noticeably Better Gas Mileage..On 10 yr old+ Engine!?
  2. Gas miles -- Standard DeVille vs DTS
  3. Changing out Fuel Rail??
  4. intake manifold bolt torque?
  5. Strange Things Happing
  6. Gas pedal click
  7. Starting to get rough idle
  8. Fixin' to pull the engine
  9. Head Gasket Leak : NO OVERHEAT with coolant supplement
  10. TPS replacement problem
  11. Fuel Leak
  12. Northstar transplant and electronics
  13. Best way to prevent an oil leak on N*?
  14. 180F or 195F Thermostat for 94 N*?
  15. Misfiring and Service Engine light
  16. Coils / Intermittent "missing" on my 99 STS
  17. Hey Hotrodelectric
  18. Northstar Expectancy
  19. Code P094 Shift A Solenoid Speed Sensor Where and what is it 94 Concours?
  20. Ac
  21. Apparent Coolant Leak Below Water Pump
  22. What makes the Headgaskets go so often on early N*s?
  23. Engine Service Soon light on but no codes??? 94 Concours
  24. Perfect exahust flow for 1999 STS?
  25. 94 N* Eldo - Thought was Head Gasket! WAS NOT! My experience!
  26. oil pressure or electrical problems?
  27. Starting Problem
  28. Coolant leak 94 Concours
  29. Bar's Leaks, block seal: Head Gasket Repair ???
  30. Starter problem with '97 STS
  31. Caddy Northstar LMP 4.0 turbo
  32. I can't drive 55 (very far)
  33. Coolant Spuing
  34. Block Drain Plug- Coolant 4.6L
  35. Vacuum Harness????
  36. Piston Slapping site
  37. Help Again Bbobynski !! - Tranny Codes
  38. ? on buying a northstar engine
  39. Improve gas mileage with water??? Stupid or Scientific?
  40. Major head gasket problem
  41. 4.6 liters 300hp... 2.0 liters 200hp
  42. OBD II computer
  43. a question
  44. Oxytane?
  45. What Engines Can I Use???
  46. Oil getting sucked in through PCV Valve: Old Mechanic's Tale?!
  47. Fuel Rail Leak
  48. Rotten Egg
  49. '95 eldo TC fuel smell in cabin & hard-start
  50. can i use marvel mystery oil?
  51. Pros/cons Of Waterwetter For Northstar
  52. Over Heat Feature
  53. Torque Convertor Viscous?
  54. Can't find IP, TC, PZ, RS code info
  55. P056 easy fix
  56. Northstar misfire and backfire
  57. Throttle body size question, and HEADERS-where can I find some?????
  58. 93-94 wrist pin problems????
  59. Brand New Northstar Engine For $2500
  60. gunning cadillacs...was it NOT worth it? :-\
  61. Intake Assembly
  62. can 94 interchange with one another.
  63. Back fire in the induction system
  64. Caddy won't go into Overdrive Any ideas?
  65. Fastchip vs Superchip ...
  66. Coolant temp 250 is this too high? No warnings and fans on low?
  67. 0-60 specs: 95' N* impressive
  68. Swaping A From Y To 9
  69. need help
  70. 2000 Dts 60k Service?!?!?
  71. Revised Emissions Woes
  72. Any GM/Cadillac certified mechanics on board? PLEASE HELP
  73. Chip for Eldo 95 LE
  74. 97 SLS Stalls Only On Hot Days
  75. Throttle body cleaning question
  76. Oil Pan Gasket Change
  77. Who agrees that the Northstar is due for an overhaul by Cadillac?
  78. High Speed fan switch not working/working well
  79. 94 concours has no warning info messages!!!!
  80. Reasons for a/c compressor inop ?
  81. Q. for anyone who knows re: FWD N* - Why Transverse?
  82. 93 seville driving on its own
  83. engine temp?
  84. Down To The Wire: last minute thoughts please
  85. where are the 25 horses
  86. North * reliability?
  87. "Induction Performance Service"?
  88. How do I know if I need the computer updated?
  89. Oil Pressure Drop
  90. ? for those with aftermarket intakes
  91. Coolant Overflow
  92. gunning cadillacs...is it worth it?
  93. 96 Eldorado heating up...
  94. 1994 Eldorado 4.6L Tapping Noise
  95. Cooling Temps.
  96. Hard shift outta 1st
  97. "Weeping" Head Gasket
  98. Obd1
  99. Help With Code 39 Tcc Off
  100. Idle Problems
  101. squeak on 97 deville
  102. crate 2000 Northstar in a 59 Chevy Suburban
  103. cold start/warm start
  104. 1994 SLS 4.6 Oil Pressure Switch Woes
  105. Colours
  106. Odd Tune Up Question
  107. P0741 TCC stuck off
  108. Pre 2000 Northstars
  109. ShadowLvr400
  110. Replace transaxle seals or not?
  111. Vacuum line routing?
  112. Bobynski!
  113. need rebuilt short block-Northstar
  114. aftermarket CPU ???
  115. 2001 deville go fast parts ???
  116. EGR Pintle Stuck????
  117. High Temps?
  118. Gear Shift Position Indicator 1994 STS
  119. Misfire/hesitation
  120. Race day mods?
  121. 97 Sedan Deville oil change
  122. motor idles eratically at start and then dies
  123. Low Oil Pressure 1994 SLS 4.6 144k
  124. Right or left, Help Please!!!
  125. Need Code Info
  126. 1996 sts need help won't start
  127. Engine crud @ head gasket repair
  128. One fan or two?
  129. Failed emissions....plugs and wires...?
  130. General Questoin
  131. Overheating --- Still!!!!!!!!
  132. What are these trouble codes? Help!
  133. AAARRRGHHH...Where's the #$@#) switch?!?!
  134. Help! Dealer wants $$ for recall fuel rail!
  135. Very Long, EBTCM
  136. Northstar Maintenance -Tune Up
  137. K&N filters
  138. Check engine soon ! Why ?
  139. Waterpump reliability
  140. No one can figure it out!!! Help!!!
  141. In need of expertise
  142. SC44 and SC55
  143. why are the northstar engines always catching on fire?
  144. where can i find a 4.6 northstar engine for a 94 eldorado touring coupe. vin 9
  145. 4.9L NorthStar Performance Upgrades???
  146. Need new/rebuilt '96 Seville engine
  147. 100K warranty
  148. Noise from PS pump.
  149. Wanted!! '00+ rear tranny mount
  150. PO 441 error
  151. Help!!
  152. Rubber gone in the top motor mounts
  153. Stop Engine Low oil pressure
  154. Help with fixing a broken shift solenoid
  155. Tranny detent cable question
  156. po29????
  157. '96 STS Engine Stalling - Possible Electrical Problem?
  158. It's time to tear into her!!
  159. Codes PC0300, PC1139, PZ2719
  160. Crack my Block!!!!!!
  161. "Y" code vs. "9" Code
  162. Northstar 97 sls was hard 2 start--now no start
  163. 1997 Seville STS - Oil Leak Problems?
  164. 130k gaskets vs. 88k transplant
  165. Unlimited funds....almost
  166. Service Emissions System
  167. air plenum and coolant...
  168. error codes p0113 &503
  169. Computer codes and more help wanted
  170. coolant and A/C fans broken blades & mounting arms
  171. 1996 Sedan Deville Knock Sensor
  172. Newbie needs help
  173. frozen serpentine belt tensioner
  174. New Northstar, Unleaded or Premium?
  175. Want to buy northstar coils...
  176. Northstar indicates overheat
  177. BBOB - North* Oil Usage Comment
  178. Bad Cylinder?? Low compression?? Need help.
  179. Steam Engine, Now What?
  180. Zero Oil Pressure!! HELP!!
  181. INtake Manifold
  182. N*, Gas drowning my cylinder, getting smoke
  183. 2 Trans oil purge questions...or more?
  184. Erratic Throttle
  185. Strange Readings 1994 Deville Concourse N*
  186. What would a gas coating on a plug mean?
  187. BBOB - thermostat?
  188. Steam from Tail Pipe?
  189. exhaust questions
  190. water pump tool
  191. Cluster Question - Low Oil Pressure
  192. Limp home mode?
  193. Flowmasters?
  194. Flexplate to Torque converter - loctite??
  195. "Check Oil Level" message question
  196. hole in aluminum Radiator - help wanted
  197. Help Eldo Completely Dead But Batt.has Voltage
  198. Rough Idle...Sluggish Acceleration....
  199. Trouble codes
  200. P0741 - TCC System Stuck Off ???
  201. Clueless N* owners with 4 codes
  202. A P059 code?
  203. Longevity of the N* timing chain nylon tensioner pads ?
  204. What type of Power Steering fluid to use in 93 N* Eldo ?
  205. Limp Home Feature?
  206. Last pressure test update - hopefully!!!
  207. How important (really) is an oil cooler?
  208. Cascading multi-module failure-BBOB?
  209. Hesitation when a/c is on?
  210. PCV valve location 2003 Deville
  211. 4T80E Trans neutraling out in Drive/OD
  212. P 028 code AND overheating?
  213. 96 Deville Waterpump belt removal
  214. Is my car misfiring?
  215. Misfire Woes
  216. Another pressure test update
  217. Can dex-cool replace green anti-f?
  218. more head gasket headaches
  219. Egr
  220. More pressure test questions
  221. Nice job on headbolt quality control
  222. 4.0 to 4.6 swap ?
  223. BBOB - did the press test/overheating/????
  224. Timesert kit needed
  225. Tapping Lifters at start
  226. Northstar Gasket Replacement $?
  227. coil packs on 93 ETC?
  228. Eating Oil.......
  229. Eror code p0153
  230. ac only blows worm air
  231. air intake pro's & cons
  232. Brand new N*...
  233. 1997 Seville - Tranny
  234. Head gasket progress/ performance?
  235. Bbob - Tranny Oil Cooler Line Quest.
  236. Eldo idle and low speed running ODD- HELP!
  237. 93 Northstar using 5w-30 ?
  238. Cleaning Engine
  239. when do the fans come on?
  240. Fun with lifters
  241. How badly stripped was your block?
  242. 96 cadillac deville troubles !!!!
  243. Starting Problems- 95 SLS
  244. Fuel Consumption-Tornado Fuel Saver
  245. my s/c 98 sts wow
  246. MSD DIS-4 and/or Interface modules??
  247. Any info on shift improvement kit for 4T80E?
  248. Need a time-sert kit!
  249. Intermittent VSS!!
  250. Lots of exhaust smoke-95 SLS