: Northstar Engines and System Technical Discussion



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  1. Code in history ? P039
  2. Dtc P0101
  3. How to pull engine codes and where to find?
  4. Performance mods!
  5. Diry relief valve causing loss of oil pressure?
  6. 95 STS Water Pump Question.
  7. NOLOGY wires for northstar motors
  8. northstar question
  9. Code SO61? PO83?
  10. Clicking noise
  11. Huge muffler comparison
  12. Fixed the egr valve myself
  13. Does Northstar turn off cylinders like 4-6-8?
  14. Fuel Additives
  15. Problems with N* arise
  16. Diagnostic Code?
  17. Went to a mechanic today on EGR
  18. Thoughts, opinions, and suggestions on carbon deposits.
  19. Year 2000 Northstar 32V engine oil consumption problem?
  20. Spark Plugs
  21. EGR Valve , need help locating it
  22. filling coolant system after flush
  23. Tornado Fuel Saver
  24. EGR valve install question
  25. Where are my O2 Sensors?
  26. PCM? What now
  27. My timesert kit on ebay, reserve at $160!
  28. No speedo!!!
  29. Carbon buildup/ fuel additives/ opinions???
  30. 95 sts starting problems
  31. Should I fix or sell?
  32. could be 1 or 2 things idler pulley or water pump plz help
  33. Northstar driven 94 Pontiac Grand Prix GTP RWD
  34. Leaking Water Pump 1998 Deville
  35. Smoking Northstar!
  36. Engine rebuilt?
  37. Northstar Squealing noise
  38. Oil change
  39. performance exhaust
  40. '94 Concours Hard To Start
  41. P0113/P1111 - then what ?
  42. whast should a 94 north start run temp wise
  43. Changing Serpentine Belt
  44. Custom Intake
  45. Maintaining Northstar Engines *A must Read*
  46. Headgasket replacement finished
  47. N* engine mount bushings...what happens if...
  48. How to remove the belt tensioner?
  49. New Cadillac owner
  50. TO 73 code??????
  51. What are my options?
  52. 2000 DeVille - Stalling
  53. Temp Sensor
  54. Misfirin' 98 DeVille. How much $ is DTC p0300,603,1381 cost?
  55. Temperature sensor - another problem...
  56. 4 Questions / 93 STS w/ 4.6
  57. Lights flicker?
  58. lights that dim when...
  59. Glitch In 97 Concours
  60. alternator replacement part deux
  61. P086 code on 94 STS keep sme from getting it smogged
  62. Calling out 156mph
  63. Cadillac dealer...
  64. ShadowLvr400......
  65. 4.6 northstar / engine, Trans swap ?
  66. TRANSMISSION/Torque convertor problems??? HELP!!!
  67. Nitrous
  68. More on coolant issues....Long post alert!
  69. '95 STS Clearing on-board diagnostic codes
  70. Quick and Simple Question
  71. 2000 STS Oil Life
  72. Calling all North* Specialist....Changing out the Alternator
  73. Service Engine Soon? What's that Noise?
  74. Dashboard mayhem
  75. weird?
  76. Need Technical Help for Engine swaping...
  77. Anyone have an opinion on electric superchargers?
  78. Will '95 coil pack, intake or exhaust fit my '93 N*?
  79. northstar performance upgrades
  80. Exhaust manifold ?
  81. Please help! Considering a '94 Deville Concours N'star
  82. New member, trying to find out if oil burning is ok!
  83. Repair Advice Needed in Orange County, CA
  84. P030 Code on '93 STS
  85. "no battery charge"
  86. "check oil level"
  87. '95 STS showing SES code: P085
  88. Which o2 sensor??
  89. Code PO24-VSS Signal To TCC-Where is It Located At?
  90. TPS - Problems
  91. thermal meltdown of n* engine ?
  92. Are Gremlins pinching my fuel line? ARGHHH!!
  93. 2002 engine into 97 Deville?
  94. Tune up?
  95. Freeze plugs ( So called )
  96. 94 Concourse Shifting Problem
  97. I smell gas in my 95 concours
  98. message
  99. update on my 97 concours
  100. NA power out of a North*?
  101. 2002 what does loss of dim communication?
  102. Turbos put back?
  103. Leaking Heater Core in 1999 DeVelle
  104. Overheating: Am I screwed?
  105. Bolting filter right on the motor
  106. 94 Eldorado Oil level sensor problem
  107. o2 sensors!!!!!! argggggggg
  108. Help Codes Driving Me Insane
  109. Funny Smell
  110. 94 Seville STS History Codes???
  111. Emissions Code on 1996 STS
  112. Real unhappy with (my new) used caddy - Can't ID the DTC's
  113. Opinions on possible purchase 91 Deville
  114. Signs you need a tuneup?
  115. R/r water pump
  116. Help Me!
  117. Hard Starting STS
  118. OBD2 Reprogramming
  119. Chip or no chip?
  120. Northstar R&R Book Times
  121. Northstars & oil consumption...are there "good" & "bad" motors?
  122. 275hp to 300hp head swap question
  123. Northstar Aftermarket Support
  124. Do Northstars burn oil fast???
  125. Help!!
  126. Northstar overheating
  127. Most common problems with NS motor
  128. Engine size ?????
  129. What is the deal with the Crank Position Sensor and...
  130. sneaky coolant leak, Northstar
  131. Bad plug wires get you crazy codes
  132. stupid dipstick
  133. N* Head Gasket repair part I/ Remove engine
  134. idle speed adjust?
  135. Belt Question
  136. Emissions System
  137. 99 SLS probelms
  138. help with codes?
  139. Head Work
  140. New person here - piston replacement question
  141. How to get to plugs on 00 STS?
  142. 1995 SLS Engine and Trans
  143. tps 1995 sts adjusted
  144. are the '93 and '95 northstar computers the same?
  145. Cracked Water Pump Housing Northstar
  146. Erratic fuel level gauge & a few other ???
  147. Time serts head gaskets and cadillac refunds
  148. 1990 Sedan Deville Valve Job
  149. Limited slip...sort of
  150. Octane reading
  151. Check Oilk Level wont stop
  152. Please help..engine coolant ?....
  153. Traction Control on STS ???
  154. 96 Seville, Check Engine Light, New owner?
  155. Help with cooling system
  156. ? on seville northstar motor?
  157. Help! I have a 1997 Concours(traction c) I would love to know where this wire goes??
  158. maintenence records?
  159. rear windows fog up
  160. Northstar - Golf swap
  161. PCM codes
  162. 1997 Deville problems
  163. Smelling Coolant inside - 93 STS
  164. Battery Replacement on 95 STS
  165. Service Brake Fluid Switch
  166. Transmition shifting ?'s
  167. Engine cutout 93STS north*
  168. Oil Life Message Problem
  169. Can I get some pictures (N* mounting)?
  170. OBD codes
  171. 95-sts wont start
  172. idle sts-95
  173. Anyone know where I can find cheap o2 sensors?!
  174. So....someone wanna rent me a timesert kit?
  175. Ignition module failure?
  176. Need help understanding a code
  177. Best oil for Northstar engines?
  178. Northstar questions: engine and tranny mounts
  179. Service Engine Light
  180. Idle speed
  181. Intermitant DTC P1416, where do I start looking?
  182. phenolic spacers cleaning
  183. Regular Unleaded
  184. Throttle Body
  185. 97 Concours....SOLD!
  186. Help Codes
  187. Thermostat
  188. 4.0/4.6 Combustion Chambers
  189. Intake air sensor / resistor mod
  190. valve job? something burning......
  191. Easy method of telling you need a coolant change!!!!!
  192. 97 dedan deville speedometer display out...
  193. 4.6L engine knock at idle
  194. High Performance driving
  195. Starting Issue
  196. High octane
  197. 4.6L engine knock at idle
  198. Headgaskets
  199. hard starting, won't pass smog symptoms
  200. Info on converter lock,,code PO39
  201. Northstar engine numbers
  202. Locking converter/check engine SOON
  203. How to replace front motor MOUNT
  204. can any one help
  205. Motor Rocks
  206. Torque converter lockup?
  207. Help!
  208. Regular Gas
  209. Nitrous Kit for Northstars - It exists
  210. why do people tell me northstars are junk?
  211. Coolant Loss
  212. VERY slight valve knock on '98 STS Northstar?
  213. Won't shift out of 1st gear
  214. Let's get some performance parts!
  215. Just how fragile are they?
  216. experienced mechanic in Los Angeles
  217. RWD 5-speeds
  218. Let's get an OBD Programmer...
  219. Limiters on 96 STS
  220. 1996 northstar in 95 eldorado - Strange things happening!
  221. Technical Photo Section?
  222. service engine light is on
  223. engine compatibility
  224. code help please
  225. 99' STS low-end torque is sluggish?
  226. Blessed With Head Gasket Leakage as Well...
  227. timesert kit
  228. performance pcm/ecu mods ODB II (96+ ) (i.e. 1999 sts)
  229. Can the 300 HP be swapped with 275 HP motor?
  230. North star motor swap
  231. Diagnostic codes and running rough
  232. cam timing tool
  233. Hard Shifting Transmision
  234. Squeek, scrape, whir.
  235. transmission removal in 94 eldorado???
  236. 2001 seville sparkplug location
  237. need advice-- cooling
  238. engine removal and install procedures
  239. Temperature problem???
  240. Starter replacement, what is the easiest way?
  241. Bearings?
  242. are northstars interferene engines?
  243. northstar head warpage?
  244. "LOW ENGINE COOLANT" came on...
  245. timeserts
  246. Northstar idle speed motor instsall
  247. Rss (c)1743, 1783, 1785 ??
  248. 4T80E drain plug location?
  249. Missfire 93 sts
  250. Idle is higher than normal and fluctuates