: Northstar Engines and System Technical Discussion



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  1. Cylinder pressure test unsuccessful-missing something?
  2. O2 Sensors for 97 STS
  3. temp for n*
  4. Drumming up support...
  5. mechanic recommends oil additive
  6. How to turn engine to TDC w/ plugs out
  7. 1994 Concours exhaust diameter
  8. misfires @ idle & WOT, no codes
  9. Why Does My Engine Shift very Hard when hot? (No Codes)
  10. Raring to go
  11. NorthStar Oil leak
  12. How to air pressure test cylinder?
  13. 4t80e no codes, limp mode
  14. Where can i find a cheap N*
  15. Sounds that a N* engine bay should make
  16. Slight Fuel smell on startup.
  17. Need TSB 3179 and info on Service PROM
  18. intermittent chirping under the hood, at poweroff...
  19. N* Headbolt Torque Protocol
  20. life of Northstar?
  21. plug the plug or leave it open
  22. WTF Belt tensionner squeel?!?
  23. I Have a Question about my transmission fluid?
  24. Flush/Drain Coolant
  25. Cooling/overheating issue
  26. Code p1189 ????
  27. 97' DeVille Northstar overheating
  28. So, how did N* ended up in a Cadillac's engine bay?
  29. My Exhaust sound...Listen!
  30. Whos idea was it to mount the N* sideways?
  31. 97 deville trouble code help me
  32. Digital MPG read outs
  33. exhaust volume
  34. '01 STS Piston and Ring Replacement
  35. This is a long-shot, just maybe...
  36. A/C issue!!!! again
  37. Turbonator, Tornado????
  38. 96 Deville T.b. And Egr Cleaning
  39. If anyone is interested in buying an Engine
  40. Catalyst melted. Why?
  41. random spring & washer after oil change.
  42. 96 Concours Northstar W/PC0240 Code
  43. New Cluster - Help
  44. Northstar Transplant?
  45. 360 HP reman N*....BBob what's your take?
  46. Gasket blown - other work while there?
  47. Northstar threw a rod, hole in lower block. Rebuildable?
  48. Help
  49. Northstar drinking coolant - need advice
  50. Blown NorthStar
  51. Remove N* eng from top or Pwrtrn out Btm?
  52. car stalls at light ?
  53. So what's wrong with FWD?
  54. Performace Module???
  55. Thud, Clunk, Bang When shifting from Drive to Reverse or From Reverse to Drive
  56. Cam Position Sensor
  57. Dammm
  58. O2 sensor Question - bboby?
  59. 98 northstar cooling system
  60. 94 Sts A/c Problems Need Help
  61. 97 Deville. P0131 - what does this tell the computere
  62. Kicking coolant out the overflow hose on the surge tank
  63. No coolant supplement pellets available here.
  64. pan seal ??????
  65. Case 1/2 seal Question
  66. 94 Concours Need Help Big Time
  67. 97 Aurora with Northstar engine..Head gasket problem!
  68. transient powertrain "slack" when engaging??
  69. road trip spec's
  70. SELLING my Cadillac Deville DTS ------
  71. new head gasket sealant and bolt sealant
  72. CHANGE OIL message after new WATER PUMP installed
  73. would WOT's get rid of this code?
  74. Midthrottle surge...
  75. schematics 95 SLS water pump
  76. Dead Eldorado
  77. question about mixing of octane at the pump
  78. Using 20w50 oil in N* 99STS
  79. Need help quick - 2000 vs 99 injectors
  80. the STS almost doesnt start...any ideas?
  81. P0171 - P0174
  82. Doing First Tune Up
  83. Transmission service at the dealer?
  84. best choice?
  85. CAT = good and ?
  86. 4 cylinder Northstar - 97 DeVille
  87. RWD N* Project update
  88. 97 STS Cranks but doesn't start - error codes
  89. small tweaks that help or not?
  90. Running ragged p0300....
  91. 97 Deville - Sensor trouble, Running poor
  92. bad dealer
  93. No pressure on hoses
  94. Test for cam position sensors 98+?
  95. stuck at this part
  96. 96 SLS sometimes hard to start
  97. low (or no) oil pressure
  98. 94 Seville not starting
  99. drag strip times
  100. Coil Packs
  101. Rattling catalytic converter on n*
  102. Rear Speed Sensors Disconnected... On Purpose?
  103. N* ring end gap?
  104. 97 deville p420 code
  105. GOT CODES? I DO & IT SUCKS!!
  106. 2000 dhs plugs
  107. cooling fans
  108. Plugs/Wires check! EGR check! Phenolic plates???
  109. mud like residue in surge tank....
  110. seafoam
  111. idle? and mpg?
  112. northstar turbo
  113. '99 STS Temperature Problem ?
  114. No pressure in expansion tank
  115. Spark plug torque N*
  116. what hose do you drain coolant from? top or bottom?
  117. Changing Throttle bodies on my N*? Proceedure!
  118. how much dex cool and distilled water?
  119. 05 STS V8 Oil filter
  120. Best Oil Change Chain?
  121. engine managament/swap in jeep
  122. Forged crankshaft for N*
  123. Need "New" Northstar
  124. LT5 Vs Early Northstar
  125. 96 SLS Electrical Problems?
  126. Headgaskets?
  127. Twin Turbo or Supercharged...
  128. Mobil 5000, Conventional Oil?
  129. How to pull this out ?
  130. Oil leak!
  131. Rebuild bearings
  132. Engine Surge/Hesitate
  133. 2000 STS Spark Plug Thread Repair
  134. Hey BBOB (and others), was the LT1 ever considered
  135. oil change for 2001 cadi deville
  136. Phenolic Spacer Plates
  137. Cranks 5-10 seconds now, what's up?
  138. 96 STS N* squeaky pulley!?!?
  139. Spark Plug Question
  140. Fuel Pressure Check...
  141. Water Pump Tool?
  142. http://www.dragtimes.com/
  143. 99 STS - Blown Head Gaskets
  144. throttle body and egr tubes
  145. 99 Concourse, just going to buy then clonk
  146. Any Temp Seal For Head gaskets??
  147. Wow, this stinks
  148. Oxygen Sensor
  149. my engine on my 98....
  150. What could the problem be????
  151. OBD Codes
  152. Northstar Exhaust acoustic "tuning", Bbobinsky?
  153. '94 Deville n* h2O pipes behind engine rusted out
  154. Map sensor
  155. Help with codes for the Concourse
  156. problems with 94 deville 4.6L
  157. Which Fuel Pressure Regulator?
  158. New Application for the N*
  159. Engine miss
  160. Northstar engine miss
  161. 97 Deville Running poorly Help.
  162. EGR stuck = retarded timing?
  163. What is an MAF, and where can I find it?
  164. Spark Plugs on 94 STS.
  165. WOT, Premium Gas and Service Engine Soon Message
  166. Re: Didn't know where else to post this...
  167. Acetone and the Northstar
  168. whats with the front valve cover???
  169. Theory for Bbob: Fuel grade AGAIN ;)
  170. Need an Honest Opinion on my STS
  171. Plugs and Wires
  172. Missfire sensor
  173. Not head GASKET!
  174. 94 deville intake cover
  175. DIC controlls
  176. superchip
  177. Help my Cadillac Starts by itself
  178. Whats up with this "turbonoter"?
  179. Are there certain northstar engines to stay away from?
  180. 98 Eldo N* Cooling Issues..Now This?
  181. Bad injectors at 50K miles?
  182. Coolant supplement paradox (yeah this again :-)
  183. 95 sts mods
  184. Lifting Fuel Rail
  185. Engine miss when HOT outside.
  186. New Concours owner has PF61 question
  187. Catalytic converter
  188. Need help with O2 sensor.
  189. Just for laughs.....
  190. 94 N* motor pulled tips and ideas
  191. Hesitation
  192. too much money to replace a oil pan gasket
  193. Code PC0138 96 Deville? O2 sensor which one?
  194. Radiator hose looks warped and rubbing against engine...
  195. Transmission Fluid Under Pressure at Cap?
  196. Pcv Valve
  197. 2000 DeVille Waterpump
  198. Oil leak?..Not oil pan!
  199. Time-Serts for 96 N* Eldorado
  200. Rebuidling Heads on 96 Eldorado N* Engine
  201. Rebuilding Heads for 96 Eldorado
  202. MAP Problem?
  203. ECM/PCM Tuning
  204. New Northstar Motor Breakin ??
  205. Never fill up on gas when...
  206. Another overheat thread: '97 Deville N*
  207. Tune Up
  208. Northstar Timing Chains
  209. Do you have a Time-Sert kit, please help ?
  210. blown head or water pump
  211. 1996 Deville Won't Shift Stays in One gear Need Help Serious Techs
  212. Can a Water Pump Be Bad Without Leaking Or Making Noise?
  213. loose power steering rack
  214. Y / 9 What's the Difference?
  215. Blown head gasket repair? 96 deville
  216. 99 STS Starting hard, STALLING..Help!!
  217. Venting Cooling System?? Drill Hole??
  218. COP - Coil over Plug Question
  219. intake plenum bolt
  220. *98 Deville- Coolant in Oil?
  221. Code P076 on 94 STS and hard shifting help!
  222. 96 deville poping and rough running
  223. Tune Up on North*???
  224. Oil misinformation
  225. Just ordered used engine
  226. Honestly, how much interest in S/C or T/C the N*
  227. Cooling fan "on" temp?
  228. Nitrous?
  229. PCV Rattle
  230. Occasional tranny slippage: Shift solenoid???
  231. 93 eldorado northstar stalls out plz help!
  232. Racing Junk heads
  233. My Caddy won't start.....help!!
  234. Northstar TIME-SERT Kit for Sale.....
  235. 1st Self Work on 1994 STS
  236. How many miles can I drive my 1996? Problems will be?
  237. Engine died & no codes?
  238. Plumbing help on 99 STS
  239. WOT vs 4T80E vs. Timing Chain
  240. Exhaust Vids
  241. 99 STS Starting hard then STALLING..Help!!
  242. How did this happen?
  243. overheats sometimes
  244. Heat / AC cover ?
  245. ignition switch
  246. 94 Concours prob. after EGR cleaning P036
  247. 98 STS Motor mount busted
  248. Help with 98 STS part.
  249. Summit Turbo Mufflers?
  250. advice on correct coolant temps for 92 eldorado