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View Full Version : Northstar Engines and System Technical Discussion



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  1. PCV Rattle
  2. Nitrous?
  3. Cooling fan "on" temp?
  4. Honestly, how much interest in S/C or T/C the N*
  5. Just ordered used engine
  6. Oil misinformation
  7. Tune Up on North*???
  8. 96 deville poping and rough running
  9. Code P076 on 94 STS and hard shifting help!
  10. *98 Deville- Coolant in Oil?
  11. intake plenum bolt
  12. COP - Coil over Plug Question
  13. Venting Cooling System?? Drill Hole??
  14. 99 STS Starting hard, STALLING..Help!!
  15. Blown head gasket repair? 96 deville
  16. Y / 9 What's the Difference?
  17. loose power steering rack
  18. Can a Water Pump Be Bad Without Leaking Or Making Noise?
  19. 1996 Deville Won't Shift Stays in One gear Need Help Serious Techs
  20. blown head or water pump
  21. Do you have a Time-Sert kit, please help ?
  22. Northstar Timing Chains
  23. Tune Up
  24. Another overheat thread: '97 Deville N*
  25. Never fill up on gas when...
  26. New Northstar Motor Breakin ??
  27. ECM/PCM Tuning
  28. MAP Problem?
  29. Rebuilding Heads for 96 Eldorado
  30. Rebuidling Heads on 96 Eldorado N* Engine
  31. Time-Serts for 96 N* Eldorado
  32. Oil leak?..Not oil pan!
  33. 2000 DeVille Waterpump
  34. Pcv Valve
  35. Transmission Fluid Under Pressure at Cap?
  36. Radiator hose looks warped and rubbing against engine...
  37. Code PC0138 96 Deville? O2 sensor which one?
  38. too much money to replace a oil pan gasket
  39. Hesitation
  40. 94 N* motor pulled tips and ideas
  41. Just for laughs.....
  42. Need help with O2 sensor.
  43. Catalytic converter
  44. New Concours owner has PF61 question
  45. Engine miss when HOT outside.
  46. Lifting Fuel Rail
  47. 95 sts mods
  48. Coolant supplement paradox (yeah this again :-)
  49. Bad injectors at 50K miles?
  50. 98 Eldo N* Cooling Issues..Now This?
  51. Are there certain northstar engines to stay away from?
  52. Whats up with this "turbonoter"?
  53. Help my Cadillac Starts by itself
  54. superchip
  55. DIC controlls
  56. 94 deville intake cover
  57. Not head GASKET!
  58. Missfire sensor
  59. Plugs and Wires
  60. Need an Honest Opinion on my STS
  61. Theory for Bbob: Fuel grade AGAIN ;)
  62. whats with the front valve cover???
  63. Acetone and the Northstar
  64. Re: Didn't know where else to post this...
  65. WOT, Premium Gas and Service Engine Soon Message
  66. Spark Plugs on 94 STS.
  67. What is an MAF, and where can I find it?
  68. EGR stuck = retarded timing?
  69. 97 Deville Running poorly Help.
  70. Northstar engine miss
  71. Engine miss
  72. New Application for the N*
  73. Which Fuel Pressure Regulator?
  74. problems with 94 deville 4.6L
  75. Help with codes for the Concourse
  76. Map sensor
  77. '94 Deville n* h2O pipes behind engine rusted out
  78. Northstar Exhaust acoustic "tuning", Bbobinsky?
  79. OBD Codes
  80. What could the problem be????
  81. my engine on my 98....
  82. Oxygen Sensor
  83. Wow, this stinks
  84. Any Temp Seal For Head gaskets??
  85. 99 Concourse, just going to buy then clonk
  86. throttle body and egr tubes
  87. 99 STS - Blown Head Gaskets
  88. http://www.dragtimes.com/
  89. Water Pump Tool?
  90. Fuel Pressure Check...
  91. Spark Plug Question
  92. 96 STS N* squeaky pulley!?!?
  93. Cranks 5-10 seconds now, what's up?
  94. Phenolic Spacer Plates
  95. oil change for 2001 cadi deville
  96. Hey BBOB (and others), was the LT1 ever considered
  97. 2000 STS Spark Plug Thread Repair
  98. Engine Surge/Hesitate
  99. Rebuild bearings
  100. Oil leak!
  101. How to pull this out ?
  102. Mobil 5000, Conventional Oil?
  103. Twin Turbo or Supercharged...
  104. Headgaskets?
  105. 96 SLS Electrical Problems?
  106. LT5 Vs Early Northstar
  107. Need "New" Northstar
  108. Forged crankshaft for N*
  109. engine managament/swap in jeep
  110. Best Oil Change Chain?
  111. 05 STS V8 Oil filter
  112. how much dex cool and distilled water?
  113. Changing Throttle bodies on my N*? Proceedure!
  114. what hose do you drain coolant from? top or bottom?
  115. Spark plug torque N*
  116. No pressure in expansion tank
  117. '99 STS Temperature Problem ?
  118. northstar turbo
  119. idle? and mpg?
  120. seafoam
  121. mud like residue in surge tank....
  122. Plugs/Wires check! EGR check! Phenolic plates???
  123. cooling fans
  124. 2000 dhs plugs
  125. GOT CODES? I DO & IT SUCKS!!
  126. 97 deville p420 code
  127. N* ring end gap?
  128. Rear Speed Sensors Disconnected... On Purpose?
  129. Rattling catalytic converter on n*
  130. Coil Packs
  131. drag strip times
  132. 94 Seville not starting
  133. low (or no) oil pressure
  134. 96 SLS sometimes hard to start
  135. stuck at this part
  136. Test for cam position sensors 98+?
  137. No pressure on hoses
  138. bad dealer
  139. 97 Deville - Sensor trouble, Running poor
  140. Running ragged p0300....
  141. small tweaks that help or not?
  142. 97 STS Cranks but doesn't start - error codes
  143. RWD N* Project update
  144. 4 cylinder Northstar - 97 DeVille
  145. CAT = good and ?
  146. best choice?
  147. Transmission service at the dealer?
  148. Doing First Tune Up
  149. P0171 - P0174
  150. the STS almost doesnt start...any ideas?
  151. Need help quick - 2000 vs 99 injectors
  152. Using 20w50 oil in N* 99STS
  153. question about mixing of octane at the pump
  154. Dead Eldorado
  155. schematics 95 SLS water pump
  156. Midthrottle surge...
  157. would WOT's get rid of this code?
  158. CHANGE OIL message after new WATER PUMP installed
  159. new head gasket sealant and bolt sealant
  160. SELLING my Cadillac Deville DTS ------
  161. road trip spec's
  162. transient powertrain "slack" when engaging??
  163. 97 Aurora with Northstar engine..Head gasket problem!
  164. 94 Concours Need Help Big Time
  165. Case 1/2 seal Question
  166. pan seal ??????
  167. No coolant supplement pellets available here.
  168. Kicking coolant out the overflow hose on the surge tank
  169. 97 Deville. P0131 - what does this tell the computere
  170. 94 Sts A/c Problems Need Help
  171. 98 northstar cooling system
  172. O2 sensor Question - bboby?
  173. Dammm
  174. Cam Position Sensor
  175. Thud, Clunk, Bang When shifting from Drive to Reverse or From Reverse to Drive
  176. Performace Module???
  177. So what's wrong with FWD?
  178. car stalls at light ?
  179. Remove N* eng from top or Pwrtrn out Btm?
  180. Blown NorthStar
  181. Northstar drinking coolant - need advice
  182. Help
  183. Northstar threw a rod, hole in lower block. Rebuildable?
  184. Gasket blown - other work while there?
  185. 360 HP reman N*....BBob what's your take?
  186. Northstar Transplant?
  187. New Cluster - Help
  188. 96 Concours Northstar W/PC0240 Code
  189. random spring & washer after oil change.
  190. Catalyst melted. Why?
  191. If anyone is interested in buying an Engine
  192. 96 Deville T.b. And Egr Cleaning
  193. Turbonator, Tornado????
  194. A/C issue!!!! again
  195. This is a long-shot, just maybe...
  196. '01 STS Piston and Ring Replacement
  197. exhaust volume
  198. Digital MPG read outs
  199. 97 deville trouble code help me
  200. Whos idea was it to mount the N* sideways?
  201. My Exhaust sound...Listen!
  202. So, how did N* ended up in a Cadillac's engine bay?
  203. 97' DeVille Northstar overheating
  204. Code p1189 ????
  205. Cooling/overheating issue
  206. Flush/Drain Coolant
  207. I Have a Question about my transmission fluid?
  208. WTF Belt tensionner squeel?!?
  209. plug the plug or leave it open
  210. life of Northstar?
  211. N* Headbolt Torque Protocol
  212. intermittent chirping under the hood, at poweroff...
  213. Need TSB 3179 and info on Service PROM
  214. Slight Fuel smell on startup.
  215. Sounds that a N* engine bay should make
  216. Where can i find a cheap N*
  217. 4t80e no codes, limp mode
  218. How to air pressure test cylinder?
  219. NorthStar Oil leak
  220. Raring to go
  221. Why Does My Engine Shift very Hard when hot? (No Codes)
  222. misfires @ idle & WOT, no codes
  223. 1994 Concours exhaust diameter
  224. How to turn engine to TDC w/ plugs out
  225. mechanic recommends oil additive
  226. Drumming up support...
  227. temp for n*
  228. O2 Sensors for 97 STS
  229. Cylinder pressure test unsuccessful-missing something?
  230. 97 n* rough idle
  231. Quick code help please
  232. N* Headbolt Torque
  233. 94 Seville STS service
  234. Northstar overheating!
  235. If anyone needs a N* Deville & Protection
  236. 95 NS chip burner
  237. Oil Life Monitor
  238. blown head gasket
  239. Oil change at 3K or when oil life=10%?
  240. Factory Service Manual
  241. Intake manifold gasket replacement...special tool?
  242. Would Magnaflows help MPG?
  243. Shift Solenoid Problem help!!!!
  244. 94 sts spark Plugs
  245. 99SLS Ruff idle when started
  246. 1995 Eldorado Northstar Engine Skips
  247. Gas Pedal Tapping When Engine Shut's Off
  248. 95 SLS Ruff Start (metal on metal)
  249. Ect???
  250. Exhaust manifold on N* 4.6