: Northstar Engines and System Technical Discussion



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  1. "Normal" Northstar Coolant Operating Temp?
  2. 1999 Deville trouble codes
  3. 97 STS Code Info U1027
  4. supercharger for the Northstar
  5. Radiator leak...how much $$$?
  6. '94 SLS Head bolt Torque value?
  7. stalling
  8. 4T80E shift algorhythm logic -- what are the facts?
  9. Oil Leak
  10. Overfill oil in northstar, keep reading bad stuff
  11. Changed starter, now very hard start, run, white smoke.
  12. '94 STS rattle
  13. '94 SLS smoking bad
  14. Bad idle and deacceleration
  15. '94 DeVille Concours North*
  16. Factory air intake box question
  17. Stop Engine Low Oil Presssure
  18. Northstar losing oil
  19. Pcm Gone Loco?
  20. Concours '94 Problem
  21. P 025 code - 1995 STS
  22. Headgasket/temperatute swings
  23. Help with ACM codes please.
  24. Can a headgasket happen even with frequent coolant changes & if it never overheated?
  25. Exhaust manifold on N* 4.6
  26. Ect???
  27. 95 SLS Ruff Start (metal on metal)
  28. Gas Pedal Tapping When Engine Shut's Off
  29. 1995 Eldorado Northstar Engine Skips
  30. 99SLS Ruff idle when started
  31. 94 sts spark Plugs
  32. Shift Solenoid Problem help!!!!
  33. Would Magnaflows help MPG?
  34. Intake manifold gasket replacement...special tool?
  35. Factory Service Manual
  36. Oil change at 3K or when oil life=10%?
  37. blown head gasket
  38. Oil Life Monitor
  39. 95 NS chip burner
  40. If anyone needs a N* Deville & Protection
  41. Northstar overheating!
  42. 94 Seville STS service
  43. N* Headbolt Torque
  44. Quick code help please
  45. 97 n* rough idle
  46. Cylinder pressure test unsuccessful-missing something?
  47. O2 Sensors for 97 STS
  48. temp for n*
  49. Drumming up support...
  50. mechanic recommends oil additive
  51. How to turn engine to TDC w/ plugs out
  52. 1994 Concours exhaust diameter
  53. misfires @ idle & WOT, no codes
  54. Why Does My Engine Shift very Hard when hot? (No Codes)
  55. Raring to go
  56. NorthStar Oil leak
  57. How to air pressure test cylinder?
  58. 4t80e no codes, limp mode
  59. Where can i find a cheap N*
  60. Sounds that a N* engine bay should make
  61. Slight Fuel smell on startup.
  62. Need TSB 3179 and info on Service PROM
  63. intermittent chirping under the hood, at poweroff...
  64. N* Headbolt Torque Protocol
  65. life of Northstar?
  66. plug the plug or leave it open
  67. WTF Belt tensionner squeel?!?
  68. I Have a Question about my transmission fluid?
  69. Flush/Drain Coolant
  70. Cooling/overheating issue
  71. Code p1189 ????
  72. 97' DeVille Northstar overheating
  73. So, how did N* ended up in a Cadillac's engine bay?
  74. My Exhaust sound...Listen!
  75. Whos idea was it to mount the N* sideways?
  76. 97 deville trouble code help me
  77. Digital MPG read outs
  78. exhaust volume
  79. '01 STS Piston and Ring Replacement
  80. This is a long-shot, just maybe...
  81. A/C issue!!!! again
  82. Turbonator, Tornado????
  83. 96 Deville T.b. And Egr Cleaning
  84. If anyone is interested in buying an Engine
  85. Catalyst melted. Why?
  86. random spring & washer after oil change.
  87. 96 Concours Northstar W/PC0240 Code
  88. New Cluster - Help
  89. Northstar Transplant?
  90. 360 HP reman N*....BBob what's your take?
  91. Gasket blown - other work while there?
  92. Northstar threw a rod, hole in lower block. Rebuildable?
  93. Help
  94. Northstar drinking coolant - need advice
  95. Blown NorthStar
  96. Remove N* eng from top or Pwrtrn out Btm?
  97. car stalls at light ?
  98. So what's wrong with FWD?
  99. Performace Module???
  100. Thud, Clunk, Bang When shifting from Drive to Reverse or From Reverse to Drive
  101. Cam Position Sensor
  102. Dammm
  103. O2 sensor Question - bboby?
  104. 98 northstar cooling system
  105. 94 Sts A/c Problems Need Help
  106. 97 Deville. P0131 - what does this tell the computere
  107. Kicking coolant out the overflow hose on the surge tank
  108. No coolant supplement pellets available here.
  109. pan seal ??????
  110. Case 1/2 seal Question
  111. 94 Concours Need Help Big Time
  112. 97 Aurora with Northstar engine..Head gasket problem!
  113. transient powertrain "slack" when engaging??
  114. road trip spec's
  115. SELLING my Cadillac Deville DTS ------
  116. new head gasket sealant and bolt sealant
  117. CHANGE OIL message after new WATER PUMP installed
  118. would WOT's get rid of this code?
  119. Midthrottle surge...
  120. schematics 95 SLS water pump
  121. Dead Eldorado
  122. question about mixing of octane at the pump
  123. Using 20w50 oil in N* 99STS
  124. Need help quick - 2000 vs 99 injectors
  125. the STS almost doesnt start...any ideas?
  126. P0171 - P0174
  127. Doing First Tune Up
  128. Transmission service at the dealer?
  129. best choice?
  130. CAT = good and ?
  131. 4 cylinder Northstar - 97 DeVille
  132. RWD N* Project update
  133. 97 STS Cranks but doesn't start - error codes
  134. small tweaks that help or not?
  135. Running ragged p0300....
  136. 97 Deville - Sensor trouble, Running poor
  137. bad dealer
  138. No pressure on hoses
  139. Test for cam position sensors 98+?
  140. stuck at this part
  141. 96 SLS sometimes hard to start
  142. low (or no) oil pressure
  143. 94 Seville not starting
  144. drag strip times
  145. Coil Packs
  146. Rattling catalytic converter on n*
  147. Rear Speed Sensors Disconnected... On Purpose?
  148. N* ring end gap?
  149. 97 deville p420 code
  150. GOT CODES? I DO & IT SUCKS!!
  151. 2000 dhs plugs
  152. cooling fans
  153. Plugs/Wires check! EGR check! Phenolic plates???
  154. mud like residue in surge tank....
  155. seafoam
  156. idle? and mpg?
  157. northstar turbo
  158. '99 STS Temperature Problem ?
  159. No pressure in expansion tank
  160. Spark plug torque N*
  161. what hose do you drain coolant from? top or bottom?
  162. Changing Throttle bodies on my N*? Proceedure!
  163. how much dex cool and distilled water?
  164. 05 STS V8 Oil filter
  165. Best Oil Change Chain?
  166. engine managament/swap in jeep
  167. Forged crankshaft for N*
  168. Need "New" Northstar
  169. LT5 Vs Early Northstar
  170. 96 SLS Electrical Problems?
  171. Headgaskets?
  172. Twin Turbo or Supercharged...
  173. Mobil 5000, Conventional Oil?
  174. How to pull this out ?
  175. Oil leak!
  176. Rebuild bearings
  177. Engine Surge/Hesitate
  178. 2000 STS Spark Plug Thread Repair
  179. Hey BBOB (and others), was the LT1 ever considered
  180. oil change for 2001 cadi deville
  181. Phenolic Spacer Plates
  182. Cranks 5-10 seconds now, what's up?
  183. 96 STS N* squeaky pulley!?!?
  184. Spark Plug Question
  185. Fuel Pressure Check...
  186. Water Pump Tool?
  187. http://www.dragtimes.com/
  188. 99 STS - Blown Head Gaskets
  189. throttle body and egr tubes
  190. 99 Concourse, just going to buy then clonk
  191. Any Temp Seal For Head gaskets??
  192. Wow, this stinks
  193. Oxygen Sensor
  194. my engine on my 98....
  195. What could the problem be????
  196. OBD Codes
  197. Northstar Exhaust acoustic "tuning", Bbobinsky?
  198. '94 Deville n* h2O pipes behind engine rusted out
  199. Map sensor
  200. Help with codes for the Concourse
  201. problems with 94 deville 4.6L
  202. Which Fuel Pressure Regulator?
  203. New Application for the N*
  204. Engine miss
  205. Northstar engine miss
  206. 97 Deville Running poorly Help.
  207. EGR stuck = retarded timing?
  208. What is an MAF, and where can I find it?
  209. Spark Plugs on 94 STS.
  210. WOT, Premium Gas and Service Engine Soon Message
  211. Re: Didn't know where else to post this...
  212. Acetone and the Northstar
  213. whats with the front valve cover???
  214. Theory for Bbob: Fuel grade AGAIN ;)
  215. Need an Honest Opinion on my STS
  216. Plugs and Wires
  217. Missfire sensor
  218. Not head GASKET!
  219. 94 deville intake cover
  220. DIC controlls
  221. superchip
  222. Help my Cadillac Starts by itself
  223. Whats up with this "turbonoter"?
  224. Are there certain northstar engines to stay away from?
  225. 98 Eldo N* Cooling Issues..Now This?
  226. Bad injectors at 50K miles?
  227. Coolant supplement paradox (yeah this again :-)
  228. 95 sts mods
  229. Lifting Fuel Rail
  230. Engine miss when HOT outside.
  231. New Concours owner has PF61 question
  232. Catalytic converter
  233. Need help with O2 sensor.
  234. Just for laughs.....
  235. 94 N* motor pulled tips and ideas
  236. Hesitation
  237. too much money to replace a oil pan gasket
  238. Code PC0138 96 Deville? O2 sensor which one?
  239. Radiator hose looks warped and rubbing against engine...
  240. Transmission Fluid Under Pressure at Cap?
  241. Pcv Valve
  242. 2000 DeVille Waterpump
  243. Oil leak?..Not oil pan!
  244. Time-Serts for 96 N* Eldorado
  245. Rebuidling Heads on 96 Eldorado N* Engine
  246. Rebuilding Heads for 96 Eldorado
  247. MAP Problem?
  248. ECM/PCM Tuning
  249. New Northstar Motor Breakin ??
  250. Never fill up on gas when...