: Northstar Engines and System Technical Discussion



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  1. Code SO61? PO83?
  2. Clicking noise
  3. Huge muffler comparison
  4. Fixed the egr valve myself
  5. Does Northstar turn off cylinders like 4-6-8?
  6. Fuel Additives
  7. Problems with N* arise
  8. Diagnostic Code?
  9. Went to a mechanic today on EGR
  10. Thoughts, opinions, and suggestions on carbon deposits.
  11. Year 2000 Northstar 32V engine oil consumption problem?
  12. Spark Plugs
  13. EGR Valve , need help locating it
  14. filling coolant system after flush
  15. Tornado Fuel Saver
  16. EGR valve install question
  17. Where are my O2 Sensors?
  18. PCM? What now
  19. My timesert kit on ebay, reserve at $160!
  20. No speedo!!!
  21. Carbon buildup/ fuel additives/ opinions???
  22. 95 sts starting problems
  23. Should I fix or sell?
  24. could be 1 or 2 things idler pulley or water pump plz help
  25. Northstar driven 94 Pontiac Grand Prix GTP RWD
  26. Leaking Water Pump 1998 Deville
  27. Smoking Northstar!
  28. Engine rebuilt?
  29. Northstar Squealing noise
  30. Oil change
  31. performance exhaust
  32. '94 Concours Hard To Start
  33. P0113/P1111 - then what ?
  34. whast should a 94 north start run temp wise
  35. Changing Serpentine Belt
  36. Custom Intake
  37. Maintaining Northstar Engines *A must Read*
  38. Headgasket replacement finished
  39. N* engine mount bushings...what happens if...
  40. How to remove the belt tensioner?
  41. New Cadillac owner
  42. TO 73 code??????
  43. What are my options?
  44. 2000 DeVille - Stalling
  45. Temp Sensor
  46. Misfirin' 98 DeVille. How much $ is DTC p0300,603,1381 cost?
  47. Temperature sensor - another problem...
  48. 4 Questions / 93 STS w/ 4.6
  49. Lights flicker?
  50. lights that dim when...
  51. Glitch In 97 Concours
  52. alternator replacement part deux
  53. P086 code on 94 STS keep sme from getting it smogged
  54. Calling out 156mph
  55. Cadillac dealer...
  56. ShadowLvr400......
  57. 4.6 northstar / engine, Trans swap ?
  58. TRANSMISSION/Torque convertor problems??? HELP!!!
  59. Nitrous
  60. More on coolant issues....Long post alert!
  61. '95 STS Clearing on-board diagnostic codes
  62. Quick and Simple Question
  63. 2000 STS Oil Life
  64. Calling all North* Specialist....Changing out the Alternator
  65. Service Engine Soon? What's that Noise?
  66. Dashboard mayhem
  67. weird?
  68. Need Technical Help for Engine swaping...
  69. Anyone have an opinion on electric superchargers?
  70. Will '95 coil pack, intake or exhaust fit my '93 N*?
  71. northstar performance upgrades
  72. Exhaust manifold ?
  73. Please help! Considering a '94 Deville Concours N'star
  74. New member, trying to find out if oil burning is ok!
  75. Repair Advice Needed in Orange County, CA
  76. P030 Code on '93 STS
  77. "no battery charge"
  78. "check oil level"
  79. '95 STS showing SES code: P085
  80. Which o2 sensor??
  81. Code PO24-VSS Signal To TCC-Where is It Located At?
  82. TPS - Problems
  83. thermal meltdown of n* engine ?
  84. Are Gremlins pinching my fuel line? ARGHHH!!
  85. 2002 engine into 97 Deville?
  86. Tune up?
  87. Freeze plugs ( So called )
  88. 94 Concourse Shifting Problem
  89. I smell gas in my 95 concours
  90. message
  91. update on my 97 concours
  92. NA power out of a North*?
  93. 2002 what does loss of dim communication?
  94. Turbos put back?
  95. Leaking Heater Core in 1999 DeVelle
  96. Overheating: Am I screwed?
  97. Bolting filter right on the motor
  98. 94 Eldorado Oil level sensor problem
  99. o2 sensors!!!!!! argggggggg
  100. Help Codes Driving Me Insane
  101. Funny Smell
  102. 94 Seville STS History Codes???
  103. Emissions Code on 1996 STS
  104. Real unhappy with (my new) used caddy - Can't ID the DTC's
  105. Opinions on possible purchase 91 Deville
  106. Signs you need a tuneup?
  107. R/r water pump
  108. Help Me!
  109. Hard Starting STS
  110. OBD2 Reprogramming
  111. Chip or no chip?
  112. Northstar R&R Book Times
  113. Northstars & oil consumption...are there "good" & "bad" motors?
  114. 275hp to 300hp head swap question
  115. Northstar Aftermarket Support
  116. Do Northstars burn oil fast???
  117. Help!!
  118. Northstar overheating
  119. Most common problems with NS motor
  120. Engine size ?????
  121. What is the deal with the Crank Position Sensor and...
  122. sneaky coolant leak, Northstar
  123. Bad plug wires get you crazy codes
  124. stupid dipstick
  125. N* Head Gasket repair part I/ Remove engine
  126. idle speed adjust?
  127. Belt Question
  128. Emissions System
  129. 99 SLS probelms
  130. help with codes?
  131. Head Work
  132. New person here - piston replacement question
  133. How to get to plugs on 00 STS?
  134. 1995 SLS Engine and Trans
  135. tps 1995 sts adjusted
  136. are the '93 and '95 northstar computers the same?
  137. Cracked Water Pump Housing Northstar
  138. Erratic fuel level gauge & a few other ???
  139. Time serts head gaskets and cadillac refunds
  140. 1990 Sedan Deville Valve Job
  141. Limited slip...sort of
  142. Octane reading
  143. Check Oilk Level wont stop
  144. Please help..engine coolant ?....
  145. Traction Control on STS ???
  146. 96 Seville, Check Engine Light, New owner?
  147. Help with cooling system
  148. ? on seville northstar motor?
  149. Help! I have a 1997 Concours(traction c) I would love to know where this wire goes??
  150. maintenence records?
  151. rear windows fog up
  152. Northstar - Golf swap
  153. PCM codes
  154. 1997 Deville problems
  155. Smelling Coolant inside - 93 STS
  156. Battery Replacement on 95 STS
  157. Service Brake Fluid Switch
  158. Transmition shifting ?'s
  159. Engine cutout 93STS north*
  160. Oil Life Message Problem
  161. Can I get some pictures (N* mounting)?
  162. OBD codes
  163. 95-sts wont start
  164. idle sts-95
  165. Anyone know where I can find cheap o2 sensors?!
  166. So....someone wanna rent me a timesert kit?
  167. Ignition module failure?
  168. Need help understanding a code
  169. Best oil for Northstar engines?
  170. Northstar questions: engine and tranny mounts
  171. Service Engine Light
  172. Idle speed
  173. Intermitant DTC P1416, where do I start looking?
  174. phenolic spacers cleaning
  175. Regular Unleaded
  176. Throttle Body
  177. 97 Concours....SOLD!
  178. Help Codes
  179. Thermostat
  180. 4.0/4.6 Combustion Chambers
  181. Intake air sensor / resistor mod
  182. valve job? something burning......
  183. Easy method of telling you need a coolant change!!!!!
  184. 97 dedan deville speedometer display out...
  185. 4.6L engine knock at idle
  186. High Performance driving
  187. Starting Issue
  188. High octane
  189. 4.6L engine knock at idle
  190. Headgaskets
  191. hard starting, won't pass smog symptoms
  192. Info on converter lock,,code PO39
  193. Northstar engine numbers
  194. Locking converter/check engine SOON
  195. How to replace front motor MOUNT
  196. can any one help
  197. Motor Rocks
  198. Torque converter lockup?
  199. Help!
  200. Regular Gas
  201. Nitrous Kit for Northstars - It exists
  202. why do people tell me northstars are junk?
  203. Coolant Loss
  204. VERY slight valve knock on '98 STS Northstar?
  205. Won't shift out of 1st gear
  206. Let's get some performance parts!
  207. Just how fragile are they?
  208. experienced mechanic in Los Angeles
  209. RWD 5-speeds
  210. Let's get an OBD Programmer...
  211. Limiters on 96 STS
  212. 1996 northstar in 95 eldorado - Strange things happening!
  213. Technical Photo Section?
  214. service engine light is on
  215. engine compatibility
  216. code help please
  217. 99' STS low-end torque is sluggish?
  218. Blessed With Head Gasket Leakage as Well...
  219. timesert kit
  220. performance pcm/ecu mods ODB II (96+ ) (i.e. 1999 sts)
  221. Can the 300 HP be swapped with 275 HP motor?
  222. North star motor swap
  223. Diagnostic codes and running rough
  224. cam timing tool
  225. Hard Shifting Transmision
  226. Squeek, scrape, whir.
  227. transmission removal in 94 eldorado???
  228. 2001 seville sparkplug location
  229. need advice-- cooling
  230. engine removal and install procedures
  231. Temperature problem???
  232. Starter replacement, what is the easiest way?
  233. Bearings?
  234. are northstars interferene engines?
  235. northstar head warpage?
  236. "LOW ENGINE COOLANT" came on...
  237. timeserts
  238. Northstar idle speed motor instsall
  239. Rss (c)1743, 1783, 1785 ??
  240. 4T80E drain plug location?
  241. Missfire 93 sts
  242. Idle is higher than normal and fluctuates
  243. STS 13:63, you ask how?
  244. Ok I can check my codes but how do you check them individually?
  245. Cadillac Hot Rodders!
  246. Keyless Entry Programming Procedure
  247. How to change Trans. Fluid?
  248. Borla exhaust needs your help
  249. Where's the Chip?
  250. Battery No Charge light on/ Alternator?