: Northstar Engines and System Technical Discussion



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  1. 99 deville/Northstar
  2. Opinions Needed
  3. Coolant supplement tabs not added at coolant change. Now what???
  4. 55.6 mpg
  5. 89in-lb? Seriously?
  6. transmission oil loss
  7. lean fuel mixture
  8. Has anybody bothered to check their Calculated Octane Rating on their OBDI Northstar?
  9. 98 STS airbox mod?
  10. cable acting up, white smoke 94 sls
  11. Trans Fluid Change Question
  12. Can anyone tell me if I have a bad head gasket
  13. Regular vs Premium Gas
  14. Po39
  15. My cheap-ass tune up
  16. head gasket and engine in-vehicle possible?
  17. 95 seville starter help!! plz look
  18. Possible Idling Problem?
  19. lifting out the '94 northstar.. please take a look
  20. My Nitrous project is under way...
  21. trans. leak
  22. c
  23. Coolant leak 98 DeVille and desparate
  24. Coolant leak and desparate
  25. Spark Plugs
  26. How about Eldo Performance Mods?
  27. new radiator, now engine overheats
  28. new radiator, now engine overheats
  29. Parts lookup by GM part #?? is it possible?
  30. Flushing 4T80E....how many quarts of fluid?
  31. changing PCValve on 94 eldorado
  32. Error code P035
  33. pull engine from the top in sections ?
  34. Sharp right turn=Puff of blue smoke!
  35. inside radiator leak/transmission leak?
  36. 93 Eldorado 4.6 Northstar "chuggle"
  37. high trans line pressure
  38. Firing order
  39. Northstar question!
  40. Can we get a moment of silence...
  41. air filter in a 1999 Deville
  42. So far I'm not thrilled
  43. Misfire and coils
  44. OBD2 Code RSM0038???
  45. Missfire - NEED HELP
  46. P036 & P056?
  47. Service Engine Soon? No apparent problems
  48. Replaced plug wires and plugs still misfire code
  49. I want more power out of my Northstar
  50. Is there any update on a head gasket sealer that works?
  51. What happened?
  52. Infinitely better than the 'turbonoter'!
  53. Headgasket change ????
  54. Motor Noise
  55. best oil for the 96 northstar 133000 miles
  56. northstar oil leak issues
  57. Where can I cash in a blown PCM core?
  58. hole in the block!!!!!!!!!!
  59. Intake Manifold removal
  60. 96 Edlo Cranks will not start
  61. Lower temp stat & fan sensor?
  62. 93 Allante Northstar oil leak
  63. Guide to replace water pump...
  64. Surge tank
  65. Dex Cool
  66. My crank pulley is wobbling...
  67. Throttle Body Question...
  68. oil pressure light
  69. General Northstar info needed
  70. overheating
  71. bad smell and smoke
  72. How do i clean the heads on my aluminum block?
  73. Dex-cool controversy
  74. what year engine is this!
  75. gasket
  76. NEW (used) Cadillac Owner Deville Northstar 32V
  77. Overheating '99 D'Elegance, need to sell....
  78. headgasket blown?
  79. 1996 cadillac deville for sale
  80. Shift solonoid ?, not like in thread below
  81. 97 eldorado etc with a stumble
  82. do I need two sets of timeserts?
  83. Trouble starting once engine is warm
  84. coolant level
  85. Ok computer genius!! I need you help please
  86. removing northstar engine AC COMPRESSOR question
  87. Intermittant detonation
  88. n*Headgasket Diag. the Hardway
  89. Using 1st, 2nd, 3rd gears in 99' STS
  90. Northstar 1993 Explosion - Urgent Need
  91. having a starting problem on my 94 sls
  92. '95 Northstar into a '94?
  93. NorthStar reliability?
  94. Leaking Coolant, where is it coming from?
  95. Removing the front valve cover on 98 N*???
  96. Low battery voltage causing hard starts ?
  97. new server with past informative posts
  98. Oil Leak Question
  99. service.gm.com username/password
  100. Slipping out of overdrive and P094 code
  101. will 99 n* spark plug wires fit 97 n* ???
  102. Update on my 99' Eldo issues.. and thanks
  103. 97 DeVille Concours low oil pressure stop engine???
  104. sensor names?!?!?!
  105. Cost of rebuilding transmission?
  106. 99 STS Engine Temp Sensor problem
  107. New Owner, 97 Eldo, A Few Thoughts And Questions
  108. what is the conditioner called to add to the radiator coolant??
  109. Toyota MR2 powered by...Northstar
  110. Northstar Twin Turbo...
  111. A helicopter powered by...Northstar engine
  112. A guy with TWO N* engines in his Caddy...The TwinStar
  113. A guy with a turbocharged Northstar powered Fiero...
  114. Found: Northstar Engine Info:
  115. Hi, new here with q on a 99 Eld.
  116. Running Rich?????
  117. Spark Plug Replacement
  118. Cooling System Hoses
  119. 95 STS Crank sensor,location ??? help
  120. engine braking a la overrun clutch
  121. Best Price/ Dealer for Time-serts?
  122. Looking for Northstar Parts!
  123. accuracy of temp sensor???? please help
  124. Oil Seal Tool ?
  125. Help need info.
  126. 94 Caddy Concours Tranny/Linkage?
  127. Need help with '94 STS codes
  128. P022 code TPS open
  129. where can i buy rear control arm bushings?
  130. Replacing Timeserts in 96 Eldorado
  131. N* hp over the years...
  132. Installing Oil Pressure Gauge???
  133. 97 Deville ran 278 Degrees..any chance i did not blow the heads?"
  134. 97 DeVille Concours still runnin hot
  135. HELP! Need serpentine belt diagram
  136. Vacuum pressure
  137. old engine, bad engine?
  138. 95 Cadillac Seville Northstar 4.6 V8 Swap...
  139. P0609 - help
  140. Shift Solenoids A & B, Need some Help!
  141. What do these codes mean in plain english ?
  142. N* performance help
  143. Northstar stud problem
  144. Noisy Northstar
  145. northstar swap?
  146. Transmission NIGHTMARE
  147. '94 SLS, 4.6L, how do you set the cam alignment?
  148. 1993 Eldo...ALL THE OIL CAME OUT
  149. what engine years will fit my 94 sls?
  150. A question on diagnostic codes
  151. tires for 99 STS??
  152. taking off oil pan?
  153. Update on PCM gone Loco
  154. Overheating: correct diagnostics
  155. N* Power Steering Pump Pressurizing
  156. 95 Northstart Leaking Coolant
  157. What next? PCM shot or something I'm missing? Please help.
  158. Oil Pressure Drop on V8 NS
  159. looking for some new ideas and help with northstar motor
  160. Backfire and smoke under the Hood
  161. Northstar/HotRod/Blower
  162. 1996 ESC 40K, Does Trans-fluid need changing?
  163. Help Needed - 95 SLS Stalls then won't idle or Revs Like Crazy! Lots of codes!
  164. Code Question for a 2000 deville north*.
  165. Can I swap an 02 N*into my 98 STS?
  166. Sorry Caddy Dudes!
  167. 97 N* low oil pressure light flickering
  168. 1996 Northstar Excess Fuel Consumption
  169. 94 SLS questions
  170. Northstar Swap question
  171. Can someone tell me what these codes mean?
  172. p076 presure solenoid problem
  173. northstar oil consumtion
  174. Compass reads incorrect sometimes?
  175. "Normal" Northstar Coolant Operating Temp?
  176. 1999 Deville trouble codes
  177. 97 STS Code Info U1027
  178. supercharger for the Northstar
  179. Radiator leak...how much $$$?
  180. '94 SLS Head bolt Torque value?
  181. stalling
  182. 4T80E shift algorhythm logic -- what are the facts?
  183. Oil Leak
  184. Overfill oil in northstar, keep reading bad stuff
  185. Changed starter, now very hard start, run, white smoke.
  186. '94 STS rattle
  187. '94 SLS smoking bad
  188. Bad idle and deacceleration
  189. '94 DeVille Concours North*
  190. Factory air intake box question
  191. Stop Engine Low Oil Presssure
  192. Northstar losing oil
  193. Pcm Gone Loco?
  194. Concours '94 Problem
  195. P 025 code - 1995 STS
  196. Headgasket/temperatute swings
  197. Help with ACM codes please.
  198. Can a headgasket happen even with frequent coolant changes & if it never overheated?
  199. Exhaust manifold on N* 4.6
  200. Ect???
  201. 95 SLS Ruff Start (metal on metal)
  202. Gas Pedal Tapping When Engine Shut's Off
  203. 1995 Eldorado Northstar Engine Skips
  204. 99SLS Ruff idle when started
  205. 94 sts spark Plugs
  206. Shift Solenoid Problem help!!!!
  207. Would Magnaflows help MPG?
  208. Intake manifold gasket replacement...special tool?
  209. Factory Service Manual
  210. Oil change at 3K or when oil life=10%?
  211. blown head gasket
  212. Oil Life Monitor
  213. 95 NS chip burner
  214. If anyone needs a N* Deville & Protection
  215. Northstar overheating!
  216. 94 Seville STS service
  217. N* Headbolt Torque
  218. Quick code help please
  219. 97 n* rough idle
  220. Cylinder pressure test unsuccessful-missing something?
  221. O2 Sensors for 97 STS
  222. temp for n*
  223. Drumming up support...
  224. mechanic recommends oil additive
  225. How to turn engine to TDC w/ plugs out
  226. 1994 Concours exhaust diameter
  227. misfires @ idle & WOT, no codes
  228. Why Does My Engine Shift very Hard when hot? (No Codes)
  229. Raring to go
  230. NorthStar Oil leak
  231. How to air pressure test cylinder?
  232. 4t80e no codes, limp mode
  233. Where can i find a cheap N*
  234. Sounds that a N* engine bay should make
  235. Slight Fuel smell on startup.
  236. Need TSB 3179 and info on Service PROM
  237. intermittent chirping under the hood, at poweroff...
  238. N* Headbolt Torque Protocol
  239. life of Northstar?
  240. plug the plug or leave it open
  241. WTF Belt tensionner squeel?!?
  242. I Have a Question about my transmission fluid?
  243. Flush/Drain Coolant
  244. Cooling/overheating issue
  245. Code p1189 ????
  246. 97' DeVille Northstar overheating
  247. So, how did N* ended up in a Cadillac's engine bay?
  248. My Exhaust sound...Listen!
  249. Whos idea was it to mount the N* sideways?
  250. 97 deville trouble code help me