: Northstar Engines and System Technical Discussion



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  1. '94 SLS smoking bad
  2. Bad idle and deacceleration
  3. '94 DeVille Concours North*
  4. Factory air intake box question
  5. Stop Engine Low Oil Presssure
  6. Northstar losing oil
  7. Pcm Gone Loco?
  8. Concours '94 Problem
  9. P 025 code - 1995 STS
  10. Headgasket/temperatute swings
  11. Help with ACM codes please.
  12. Can a headgasket happen even with frequent coolant changes & if it never overheated?
  13. Exhaust manifold on N* 4.6
  14. Ect???
  15. 95 SLS Ruff Start (metal on metal)
  16. Gas Pedal Tapping When Engine Shut's Off
  17. 1995 Eldorado Northstar Engine Skips
  18. 99SLS Ruff idle when started
  19. 94 sts spark Plugs
  20. Shift Solenoid Problem help!!!!
  21. Would Magnaflows help MPG?
  22. Intake manifold gasket replacement...special tool?
  23. Factory Service Manual
  24. Oil change at 3K or when oil life=10%?
  25. blown head gasket
  26. Oil Life Monitor
  27. 95 NS chip burner
  28. If anyone needs a N* Deville & Protection
  29. Northstar overheating!
  30. 94 Seville STS service
  31. N* Headbolt Torque
  32. Quick code help please
  33. 97 n* rough idle
  34. Cylinder pressure test unsuccessful-missing something?
  35. O2 Sensors for 97 STS
  36. temp for n*
  37. Drumming up support...
  38. mechanic recommends oil additive
  39. How to turn engine to TDC w/ plugs out
  40. 1994 Concours exhaust diameter
  41. misfires @ idle & WOT, no codes
  42. Why Does My Engine Shift very Hard when hot? (No Codes)
  43. Raring to go
  44. NorthStar Oil leak
  45. How to air pressure test cylinder?
  46. 4t80e no codes, limp mode
  47. Where can i find a cheap N*
  48. Sounds that a N* engine bay should make
  49. Slight Fuel smell on startup.
  50. Need TSB 3179 and info on Service PROM
  51. intermittent chirping under the hood, at poweroff...
  52. N* Headbolt Torque Protocol
  53. life of Northstar?
  54. plug the plug or leave it open
  55. WTF Belt tensionner squeel?!?
  56. I Have a Question about my transmission fluid?
  57. Flush/Drain Coolant
  58. Cooling/overheating issue
  59. Code p1189 ????
  60. 97' DeVille Northstar overheating
  61. So, how did N* ended up in a Cadillac's engine bay?
  62. My Exhaust sound...Listen!
  63. Whos idea was it to mount the N* sideways?
  64. 97 deville trouble code help me
  65. Digital MPG read outs
  66. exhaust volume
  67. '01 STS Piston and Ring Replacement
  68. This is a long-shot, just maybe...
  69. A/C issue!!!! again
  70. Turbonator, Tornado????
  71. 96 Deville T.b. And Egr Cleaning
  72. If anyone is interested in buying an Engine
  73. Catalyst melted. Why?
  74. random spring & washer after oil change.
  75. 96 Concours Northstar W/PC0240 Code
  76. New Cluster - Help
  77. Northstar Transplant?
  78. 360 HP reman N*....BBob what's your take?
  79. Gasket blown - other work while there?
  80. Northstar threw a rod, hole in lower block. Rebuildable?
  81. Help
  82. Northstar drinking coolant - need advice
  83. Blown NorthStar
  84. Remove N* eng from top or Pwrtrn out Btm?
  85. car stalls at light ?
  86. So what's wrong with FWD?
  87. Performace Module???
  88. Thud, Clunk, Bang When shifting from Drive to Reverse or From Reverse to Drive
  89. Cam Position Sensor
  90. Dammm
  91. O2 sensor Question - bboby?
  92. 98 northstar cooling system
  93. 94 Sts A/c Problems Need Help
  94. 97 Deville. P0131 - what does this tell the computere
  95. Kicking coolant out the overflow hose on the surge tank
  96. No coolant supplement pellets available here.
  97. pan seal ??????
  98. Case 1/2 seal Question
  99. 94 Concours Need Help Big Time
  100. 97 Aurora with Northstar engine..Head gasket problem!
  101. transient powertrain "slack" when engaging??
  102. road trip spec's
  103. SELLING my Cadillac Deville DTS ------
  104. new head gasket sealant and bolt sealant
  105. CHANGE OIL message after new WATER PUMP installed
  106. would WOT's get rid of this code?
  107. Midthrottle surge...
  108. schematics 95 SLS water pump
  109. Dead Eldorado
  110. question about mixing of octane at the pump
  111. Using 20w50 oil in N* 99STS
  112. Need help quick - 2000 vs 99 injectors
  113. the STS almost doesnt start...any ideas?
  114. P0171 - P0174
  115. Doing First Tune Up
  116. Transmission service at the dealer?
  117. best choice?
  118. CAT = good and ?
  119. 4 cylinder Northstar - 97 DeVille
  120. RWD N* Project update
  121. 97 STS Cranks but doesn't start - error codes
  122. small tweaks that help or not?
  123. Running ragged p0300....
  124. 97 Deville - Sensor trouble, Running poor
  125. bad dealer
  126. No pressure on hoses
  127. Test for cam position sensors 98+?
  128. stuck at this part
  129. 96 SLS sometimes hard to start
  130. low (or no) oil pressure
  131. 94 Seville not starting
  132. drag strip times
  133. Coil Packs
  134. Rattling catalytic converter on n*
  135. Rear Speed Sensors Disconnected... On Purpose?
  136. N* ring end gap?
  137. 97 deville p420 code
  138. GOT CODES? I DO & IT SUCKS!!
  139. 2000 dhs plugs
  140. cooling fans
  141. Plugs/Wires check! EGR check! Phenolic plates???
  142. mud like residue in surge tank....
  143. seafoam
  144. idle? and mpg?
  145. northstar turbo
  146. '99 STS Temperature Problem ?
  147. No pressure in expansion tank
  148. Spark plug torque N*
  149. what hose do you drain coolant from? top or bottom?
  150. Changing Throttle bodies on my N*? Proceedure!
  151. how much dex cool and distilled water?
  152. 05 STS V8 Oil filter
  153. Best Oil Change Chain?
  154. engine managament/swap in jeep
  155. Forged crankshaft for N*
  156. Need "New" Northstar
  157. LT5 Vs Early Northstar
  158. 96 SLS Electrical Problems?
  159. Headgaskets?
  160. Twin Turbo or Supercharged...
  161. Mobil 5000, Conventional Oil?
  162. How to pull this out ?
  163. Oil leak!
  164. Rebuild bearings
  165. Engine Surge/Hesitate
  166. 2000 STS Spark Plug Thread Repair
  167. Hey BBOB (and others), was the LT1 ever considered
  168. oil change for 2001 cadi deville
  169. Phenolic Spacer Plates
  170. Cranks 5-10 seconds now, what's up?
  171. 96 STS N* squeaky pulley!?!?
  172. Spark Plug Question
  173. Fuel Pressure Check...
  174. Water Pump Tool?
  175. http://www.dragtimes.com/
  176. 99 STS - Blown Head Gaskets
  177. throttle body and egr tubes
  178. 99 Concourse, just going to buy then clonk
  179. Any Temp Seal For Head gaskets??
  180. Wow, this stinks
  181. Oxygen Sensor
  182. my engine on my 98....
  183. What could the problem be????
  184. OBD Codes
  185. Northstar Exhaust acoustic "tuning", Bbobinsky?
  186. '94 Deville n* h2O pipes behind engine rusted out
  187. Map sensor
  188. Help with codes for the Concourse
  189. problems with 94 deville 4.6L
  190. Which Fuel Pressure Regulator?
  191. New Application for the N*
  192. Engine miss
  193. Northstar engine miss
  194. 97 Deville Running poorly Help.
  195. EGR stuck = retarded timing?
  196. What is an MAF, and where can I find it?
  197. Spark Plugs on 94 STS.
  198. WOT, Premium Gas and Service Engine Soon Message
  199. Re: Didn't know where else to post this...
  200. Acetone and the Northstar
  201. whats with the front valve cover???
  202. Theory for Bbob: Fuel grade AGAIN ;)
  203. Need an Honest Opinion on my STS
  204. Plugs and Wires
  205. Missfire sensor
  206. Not head GASKET!
  207. 94 deville intake cover
  208. DIC controlls
  209. superchip
  210. Help my Cadillac Starts by itself
  211. Whats up with this "turbonoter"?
  212. Are there certain northstar engines to stay away from?
  213. 98 Eldo N* Cooling Issues..Now This?
  214. Bad injectors at 50K miles?
  215. Coolant supplement paradox (yeah this again :-)
  216. 95 sts mods
  217. Lifting Fuel Rail
  218. Engine miss when HOT outside.
  219. New Concours owner has PF61 question
  220. Catalytic converter
  221. Need help with O2 sensor.
  222. Just for laughs.....
  223. 94 N* motor pulled tips and ideas
  224. Hesitation
  225. too much money to replace a oil pan gasket
  226. Code PC0138 96 Deville? O2 sensor which one?
  227. Radiator hose looks warped and rubbing against engine...
  228. Transmission Fluid Under Pressure at Cap?
  229. Pcv Valve
  230. 2000 DeVille Waterpump
  231. Oil leak?..Not oil pan!
  232. Time-Serts for 96 N* Eldorado
  233. Rebuidling Heads on 96 Eldorado N* Engine
  234. Rebuilding Heads for 96 Eldorado
  235. MAP Problem?
  236. ECM/PCM Tuning
  237. New Northstar Motor Breakin ??
  238. Never fill up on gas when...
  239. Another overheat thread: '97 Deville N*
  240. Tune Up
  241. Northstar Timing Chains
  242. Do you have a Time-Sert kit, please help ?
  243. blown head or water pump
  244. 1996 Deville Won't Shift Stays in One gear Need Help Serious Techs
  245. Can a Water Pump Be Bad Without Leaking Or Making Noise?
  246. loose power steering rack
  247. Y / 9 What's the Difference?
  248. Blown head gasket repair? 96 deville
  249. 99 STS Starting hard, STALLING..Help!!
  250. Venting Cooling System?? Drill Hole??