: Northstar Engines and System Technical Discussion



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  1. thermostat starting to rise in strange way
  2. overheating , but ez fix?
  3. intermittent "hard start" when car at operating temp
  4. How to tell if block is timeserted?
  5. HELP ME!!!! What is the difference between ECON and Auto
  6. clogged cat = overheating?
  7. 2000-up coil pack crack
  8. 93 sts trans solenoids?
  9. Sealing off a blown head gasket
  10. Rear Main Seal
  11. Oil Life % vs. Reality
  12. Time out!!
  13. engines misses after teardown
  14. 93 STS Northstar won't start
  15. Motor build for sand rail
  16. What kind of gas mileage do you get with your Northstar?
  17. crank sensors
  18. 4.0 Northstar No Start PLEASE HELP!!!
  19. What Northstar do I have?
  20. 96 Eldorado ETC - Blown head gasket
  21. Radiator hoses
  22. headgasket pics
  23. Converter Size
  24. Cylinder Head Reconditioning
  25. 02 sts N* Engine knock
  26. MAF Issues
  27. Oil Pressure Issue - 2000 Cadillac DeVille
  28. Northstar mechanic in the Massachusetts??
  29. Need Help
  30. 93 sts misses and no 2-3 shift
  31. Good fresh tim-serted 94' SLS engine on ebay.
  32. Help, still overheating after headgasket job .
  33. Cooling fan motor bad?
  34. Roots style S/C for the northstar. Anytakers?
  35. front HVAC blower not working on 2000 deville
  36. 1995 STS won't start
  37. 94 4.6L SLS/STS Engine on Ebay
  38. oil level sensor
  39. Thought I had all the parts
  40. '99 Deville stalled and wont start
  41. 96 Deville stumbles on acceleration
  42. Spark Plug Gap
  43. P094 code
  44. 2001 Northstar 4.6 in 99 sts body??
  45. Short runner intake
  46. Bad Waterpump???
  47. Making a trip to fastchip
  48. Fan runs while car is shut off
  49. 94 Seville w/ 93 Engine & Trans (from Eldorado) Shift Problem
  50. Backfired while starting, now I have a miss!
  51. Octane Boosters
  52. Code Question
  53. sluggish n* in a 96 eldo
  54. 03 4.6 Loud engine knock caused by roller rockers
  55. I did the intake and exhaust and no difference
  56. looking at a scangauge 2 / question about pulling codes
  57. starter gives a single click
  58. PCM Data, PD42 Octane?
  59. Made the switch to Rotella...
  60. Crank seal replacement cost??
  61. Headlight problem!
  62. 99 STS blown head gasket. what to do??
  63. Turning off Injectors = Save fuel?
  64. A/C Question
  65. Two pricing question
  66. 1995 STS Performance ?
  67. I052 Code + Stalling + Instrument Panel Reset
  68. Oil pressure Sending Unit
  69. P/S pump leak
  70. Oil Leak
  71. "Low Refrigerant" & "A/C Compressor Off" B1348
  72. 95 Deville Concours performance
  73. '03 STS making turbine-like sound for 5-10 secs on cold start. Any ideas?
  74. new exhaust with #s
  75. Main bearing Torque Values? '94 4.6L SLS
  76. What tools needed to replace idle control motor on N*?
  77. Sooty Stalling 98 Deville
  78. New N* Owner - What to look for?
  79. Will the REAL Dexcool Please Stand Up?
  80. Rustling noise and loss of power
  81. Mass air flow sensor Help please
  82. oil cooler
  83. Engine just dies
  84. Swapping Engine To A Non-Northstar
  85. I have a little oil in the spark plug wells, anything to worry about?
  86. setting timing
  87. How about a Northstar Survival Guide
  88. what color is dexcool?
  89. Engine revving on its own
  90. Northstar remanufactured engine source
  91. "If it wasn't for bad luck....you know the rest
  92. Hitting 150k or more, is it realistic on my car?
  93. Time-Sert
  94. Bouncing Idle, new sparkplugs and oil after seafoam or TEC?
  95. front motor mount
  96. Is it Normal to Leak????
  97. Power steering leak
  98. 99 Northstar burning coolant somewhere!
  99. Data loging with performance monitoring and measuring devices
  100. Help With My 99' N* Hg Job
  101. Low oil pressure warning
  102. engine-trans bolts
  103. Valve Train Ticking
  104. What peformance chip is better for 02 dts?
  105. Wrong headbolts
  106. Changing HG, will heads be ok?
  107. N* Stock Internals
  108. Oil missing from pan
  109. 93-99 Dis ????
  110. So, i just talked to one of the engineers at GM that worked on the northstar
  111. 02 deville spark plug replacement
  112. Finding New Mechanic: Questions to Ask
  113. Myth!!!!! Octane 99 and prior VS 00+
  114. Interesting problem - highway stalling
  115. just installed alternator, NOW WHAT!
  116. How much horsepower in 1997 Professional Chassis (Limo)?
  117. A\C Question!!!!!!!!!!!!!!
  118. How to get out cylinder head alignment bushings???
  119. Tim Allens 400HP naturally asp. N*
  120. cracked engine block
  121. 1997 DeVille Head Gasket Repair
  122. Solid Motor Mount?
  123. lower motor mount
  124. low oil pressure / battery no charge on DIC
  125. '98 STS Camshaft
  126. 05 DTS Northstar fuel economy
  127. Leaking Head Gaskets & Extended Warranty
  128. p1375 icm 24x reference voltage too high and p1350 ignition control system
  129. 00 deville cylinder #4
  130. Northstar overheating causes
  131. locating dowels
  132. 00 deville P0300
  133. Changing spark plugs on a Northstar
  134. can't find anyone who knows the answer
  135. 94 sts strange issue
  136. 30,000 mile service
  137. 98 sts bogging and backfiring
  138. symptoms and cuases of headgasket
  139. 2007 Northstar VIN A PCM Pinouts
  140. Interesting Observation with Volant.
  141. Suggest new catorgory"Northstar Tuning"
  142. Question about Dexcool for the Northstar 4.6
  143. 99 STS in Distress
  144. p0300 Engine Misfire
  145. Need Some Feedback
  146. P0171 and P0174 codes: Intake leak?
  147. TC0073 ???? I have searched with not a REAL answer
  148. carbon on tailpipes, and why?
  149. are time serts asbsolutely necessary
  150. Replacing various parts
  151. new radiator
  152. N* HG Repair, Drop cradle or Pull engine?
  153. Cheap Mechanic in Des Moines?
  154. Cooling Fans NEED HELP.
  155. P094 = Tranny rebuilt?
  156. Problems with N* motor
  157. Considering used Northstar- need advice
  158. More Northstar head gasket questions...
  159. Help with two noises from '97 Northstar
  160. i need help on how to change my headgasket on my 99 seville sls
  161. Back Pressure in Cooling System?
  162. what is OBDII
  163. WANTED Time Sert Kit Rental
  164. **Update** Head gasket on 99 Deville
  165. '94 N* Touring coupe with PO37 code?
  166. Check Engine Codes, vibration
  167. 94 STS Won't accelerate w/o almost stalling the engine.
  168. broken coolant reservoir in my N*
  169. Water pump replacement
  170. 2000 N* is it safe to fill it with a non sinthetic oil?
  171. Sudden drop in fuel economy with AC on
  172. Lambo V12 similiar to N*?
  173. Timing chain tensioner tool
  174. Could a bad catalytic converter also decrease my gas mileage?
  175. Is DEX save for engines?
  176. still overheating
  177. Replaced your Power Steering Pump? Come on IN!!!
  178. 01Deville MISFIRE
  179. 99 N* Issue
  180. bad cylinder
  181. Think Northstar headgaskets are expensive??
  182. Coolant Smell after Shut Down?
  183. 00 DeVille check coolant level
  184. dyno #s
  185. Aurora N* questions
  186. Cheapest way to do HG's?????
  187. I found my leak, now i need help
  188. Is the N* overrated?
  189. Northstar crate or rebuild??
  190. Timesert pulled when torquing headbolts-What Now??
  191. I Need Cheap 97 insert kit
  192. 99 Deville over heating NOT HG I think
  193. 02/03 Alternator regulator
  194. 98 deville fluttering sound
  195. A/C Recharging Help
  196. 99 ELDO coolant level Question.
  197. Sign of upcoming headgasket problem?
  198. head bolts
  199. tachometer like a rollercoaster...
  200. overheating problem
  201. Northstar owner loosing faith
  202. Fuel Injector Problem I Think
  203. Transmission Fluid
  204. Alternator
  205. Coolant Loss and Overheating
  206. Harmonic Balancer. Dangerous?
  207. Someone please help, i need to know whats this part.
  208. Suspension compressor lube and NRV - help!
  209. Superchargers are here!
  210. 93 to 99 O/H assembly
  211. 93 to 99 Northstar dis-assembly and inspection
  212. RWD Northstar information
  213. 2000 to 2004 or 5 Northstar information
  214. 4.4L information
  215. Northstar "check coolant level" -- trying to understand basics
  216. Northstar head gaskets replaced -- a good thing?
  217. Head Bolt Torque Value?
  218. Biggest Question To All..
  219. Re-mounting PCM - Idea?
  220. Coolant use
  221. How to clean Piston Rings my way
  222. 4T80E 3.11 to 3.71 swap
  223. Differences in Northstars - '93-'97, also cheap head gasket fix...
  224. What weight and type oil to use?
  225. Rochester QJ and N* Throttlebodies
  226. Another coolant/radiator/headgasket question
  227. northstar shuts down
  228. Head Gasket or Something Else (Steamy Exhaust)
  229. Help with codes from DIC
  230. need N* casting/part#s for ID
  231. How do you pull injectors????
  232. Crank sensor and PCM History
  233. For you guys who have done a headgasket job on the 4.6
  234. Camshaft Pulley will not come off!!
  235. Volant - The long awaited very custom install (pics)
  236. Older (95) Northstar Re-Torque?
  237. Need Help DIC Warning Messages (w/Codes!)
  238. pricing Time Serts
  239. Second Head Gasket problem, 93 Eldorado
  240. '05 DeVille, Two Black Cam Covers?
  241. fuel system tune up?
  242. changing N* oil w/o lift
  243. N* teardown for successful timing on assembly
  244. Factory strut tower brace and "dogbones" - can i do better?
  245. 00 to 05 T-body Dimensions
  246. How bad am I getting screwed?
  247. 97' deville---new radiator but now losing engine oil
  248. In Need of Timersert
  249. I think it's the Tensioner
  250. Induction system and adhesives