: Northstar Engines and System Technical Discussion



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  1. 94 Seville w/ 93 Engine & Trans (from Eldorado) Shift Problem
  2. Backfired while starting, now I have a miss!
  3. Octane Boosters
  4. Code Question
  5. sluggish n* in a 96 eldo
  6. 03 4.6 Loud engine knock caused by roller rockers
  7. I did the intake and exhaust and no difference
  8. looking at a scangauge 2 / question about pulling codes
  9. starter gives a single click
  10. PCM Data, PD42 Octane?
  11. Made the switch to Rotella...
  12. Crank seal replacement cost??
  13. Headlight problem!
  14. 99 STS blown head gasket. what to do??
  15. Turning off Injectors = Save fuel?
  16. A/C Question
  17. Two pricing question
  18. 1995 STS Performance ?
  19. I052 Code + Stalling + Instrument Panel Reset
  20. Oil pressure Sending Unit
  21. P/S pump leak
  22. Oil Leak
  23. "Low Refrigerant" & "A/C Compressor Off" B1348
  24. 95 Deville Concours performance
  25. '03 STS making turbine-like sound for 5-10 secs on cold start. Any ideas?
  26. new exhaust with #s
  27. Main bearing Torque Values? '94 4.6L SLS
  28. What tools needed to replace idle control motor on N*?
  29. Sooty Stalling 98 Deville
  30. New N* Owner - What to look for?
  31. Will the REAL Dexcool Please Stand Up?
  32. Rustling noise and loss of power
  33. Mass air flow sensor Help please
  34. oil cooler
  35. Engine just dies
  36. Swapping Engine To A Non-Northstar
  37. I have a little oil in the spark plug wells, anything to worry about?
  38. setting timing
  39. How about a Northstar Survival Guide
  40. what color is dexcool?
  41. Engine revving on its own
  42. Northstar remanufactured engine source
  43. "If it wasn't for bad luck....you know the rest
  44. Hitting 150k or more, is it realistic on my car?
  45. Time-Sert
  46. Bouncing Idle, new sparkplugs and oil after seafoam or TEC?
  47. front motor mount
  48. Is it Normal to Leak????
  49. Power steering leak
  50. 99 Northstar burning coolant somewhere!
  51. Data loging with performance monitoring and measuring devices
  52. Help With My 99' N* Hg Job
  53. Low oil pressure warning
  54. engine-trans bolts
  55. Valve Train Ticking
  56. What peformance chip is better for 02 dts?
  57. Wrong headbolts
  58. Changing HG, will heads be ok?
  59. N* Stock Internals
  60. Oil missing from pan
  61. 93-99 Dis ????
  62. So, i just talked to one of the engineers at GM that worked on the northstar
  63. 02 deville spark plug replacement
  64. Finding New Mechanic: Questions to Ask
  65. Myth!!!!! Octane 99 and prior VS 00+
  66. Interesting problem - highway stalling
  67. just installed alternator, NOW WHAT!
  68. How much horsepower in 1997 Professional Chassis (Limo)?
  69. A\C Question!!!!!!!!!!!!!!
  70. How to get out cylinder head alignment bushings???
  71. Tim Allens 400HP naturally asp. N*
  72. cracked engine block
  73. 1997 DeVille Head Gasket Repair
  74. Solid Motor Mount?
  75. lower motor mount
  76. low oil pressure / battery no charge on DIC
  77. '98 STS Camshaft
  78. 05 DTS Northstar fuel economy
  79. Leaking Head Gaskets & Extended Warranty
  80. p1375 icm 24x reference voltage too high and p1350 ignition control system
  81. 00 deville cylinder #4
  82. Northstar overheating causes
  83. locating dowels
  84. 00 deville P0300
  85. Changing spark plugs on a Northstar
  86. can't find anyone who knows the answer
  87. 94 sts strange issue
  88. 30,000 mile service
  89. 98 sts bogging and backfiring
  90. symptoms and cuases of headgasket
  91. 2007 Northstar VIN A PCM Pinouts
  92. Interesting Observation with Volant.
  93. Suggest new catorgory"Northstar Tuning"
  94. Question about Dexcool for the Northstar 4.6
  95. 99 STS in Distress
  96. p0300 Engine Misfire
  97. Need Some Feedback
  98. P0171 and P0174 codes: Intake leak?
  99. TC0073 ???? I have searched with not a REAL answer
  100. carbon on tailpipes, and why?
  101. are time serts asbsolutely necessary
  102. Replacing various parts
  103. new radiator
  104. N* HG Repair, Drop cradle or Pull engine?
  105. Cheap Mechanic in Des Moines?
  106. Cooling Fans NEED HELP.
  107. P094 = Tranny rebuilt?
  108. Problems with N* motor
  109. Considering used Northstar- need advice
  110. More Northstar head gasket questions...
  111. Help with two noises from '97 Northstar
  112. i need help on how to change my headgasket on my 99 seville sls
  113. Back Pressure in Cooling System?
  114. what is OBDII
  115. WANTED Time Sert Kit Rental
  116. **Update** Head gasket on 99 Deville
  117. '94 N* Touring coupe with PO37 code?
  118. Check Engine Codes, vibration
  119. 94 STS Won't accelerate w/o almost stalling the engine.
  120. broken coolant reservoir in my N*
  121. Water pump replacement
  122. 2000 N* is it safe to fill it with a non sinthetic oil?
  123. Sudden drop in fuel economy with AC on
  124. Lambo V12 similiar to N*?
  125. Timing chain tensioner tool
  126. Could a bad catalytic converter also decrease my gas mileage?
  127. Is DEX save for engines?
  128. still overheating
  129. Replaced your Power Steering Pump? Come on IN!!!
  130. 01Deville MISFIRE
  131. 99 N* Issue
  132. bad cylinder
  133. Think Northstar headgaskets are expensive??
  134. Coolant Smell after Shut Down?
  135. 00 DeVille check coolant level
  136. dyno #s
  137. Aurora N* questions
  138. Cheapest way to do HG's?????
  139. I found my leak, now i need help
  140. Is the N* overrated?
  141. Northstar crate or rebuild??
  142. Timesert pulled when torquing headbolts-What Now??
  143. I Need Cheap 97 insert kit
  144. 99 Deville over heating NOT HG I think
  145. 02/03 Alternator regulator
  146. 98 deville fluttering sound
  147. A/C Recharging Help
  148. 99 ELDO coolant level Question.
  149. Sign of upcoming headgasket problem?
  150. head bolts
  151. tachometer like a rollercoaster...
  152. overheating problem
  153. Northstar owner loosing faith
  154. Fuel Injector Problem I Think
  155. Transmission Fluid
  156. Alternator
  157. Coolant Loss and Overheating
  158. Harmonic Balancer. Dangerous?
  159. Someone please help, i need to know whats this part.
  160. Suspension compressor lube and NRV - help!
  161. Superchargers are here!
  162. 93 to 99 O/H assembly
  163. 93 to 99 Northstar dis-assembly and inspection
  164. RWD Northstar information
  165. 2000 to 2004 or 5 Northstar information
  166. 4.4L information
  167. Northstar "check coolant level" -- trying to understand basics
  168. Northstar head gaskets replaced -- a good thing?
  169. Head Bolt Torque Value?
  170. Biggest Question To All..
  171. Re-mounting PCM - Idea?
  172. Coolant use
  173. How to clean Piston Rings my way
  174. 4T80E 3.11 to 3.71 swap
  175. Differences in Northstars - '93-'97, also cheap head gasket fix...
  176. What weight and type oil to use?
  177. Rochester QJ and N* Throttlebodies
  178. Another coolant/radiator/headgasket question
  179. northstar shuts down
  180. Head Gasket or Something Else (Steamy Exhaust)
  181. Help with codes from DIC
  182. need N* casting/part#s for ID
  183. How do you pull injectors????
  184. Crank sensor and PCM History
  185. For you guys who have done a headgasket job on the 4.6
  186. Camshaft Pulley will not come off!!
  187. Volant - The long awaited very custom install (pics)
  188. Older (95) Northstar Re-Torque?
  189. Need Help DIC Warning Messages (w/Codes!)
  190. pricing Time Serts
  191. Second Head Gasket problem, 93 Eldorado
  192. '05 DeVille, Two Black Cam Covers?
  193. fuel system tune up?
  194. changing N* oil w/o lift
  195. N* teardown for successful timing on assembly
  196. Factory strut tower brace and "dogbones" - can i do better?
  197. 00 to 05 T-body Dimensions
  198. How bad am I getting screwed?
  199. 97' deville---new radiator but now losing engine oil
  200. In Need of Timersert
  201. I think it's the Tensioner
  202. Induction system and adhesives
  203. top speed
  204. 1997 cadillac devill d,elegance
  205. '95 SLS Rough Idle
  206. HELP! Code P1646.. Evaporative emission (EVAP) vent Solenoid Control Circuit
  207. NS300L Insert System, Anyone have these kind?
  208. Nitrous is Here!!
  209. Presidential Limo Breaks Down
  210. Surge Tank
  211. Need Help Guys 00 Northstar Coil Problem
  212. CHRFAB Intake Manifold
  213. Looked up codes but still confused
  214. Head gasket problem in '97 STS, looking for a new engine
  215. TCC codes P0741 & P1860 questions
  216. Transmission Swap
  217. 1997 STS problems
  218. O2 repair-Domino Effect-Need Help
  219. 2004 Northstar - Tapping Noise, Lifter Or Timing Chain?
  220. 98 STS engine swap -need a bit of help
  221. performance options
  222. separating motor and transaxle??
  223. cant fix hard hot start for the life of me
  224. Water Pump Replaced (99 Deville)
  225. 95 SLS n* timesert completed-special tool made!
  226. my magnaflow exhaus vid yes another
  227. Translate 96 Codes
  228. What percentage of Northstar engines have headgasket problems?
  229. Coolant
  230. Leaking Transmission Fluid
  231. intermittent random oil pressure light?
  232. Northstar average engine temp ?
  233. A Little "smoke" From The Back Of A 1993 N* Sts
  234. 99 Deville Check Engine Light
  235. N* Injectors?
  236. My 2001 STS' Repair History
  237. Magnaflow exhaust
  238. timings off
  239. High Idle + no Brake
  240. 2000 ElDorado Coach Builders LTD Hard Boot
  241. Serpentine Belt Shredded/radiator Has Leak Now
  242. Temp rise after giving it gas
  243. Timeserts good for the WOT tune-up?
  244. Prestone Extended Life Coolant - All Makes and Models
  245. any tips for inserting fuel injector back into fuel rail?
  246. Timsert Kit for sale unused, 1999/earlier N*
  247. Videoclip of new Exhaust (for those who missed my other thread)
  248. ok kinda noobish but give me a quick reply
  249. Mystery Grind in Transmission, Engine, Where?
  250. how long does it take to replace and install fuel injectors