: Northstar Engines and System Technical Discussion



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