: Northstar Engines and System Technical Discussion



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  1. filling coolant system after flush
  2. Tornado Fuel Saver
  3. EGR valve install question
  4. Where are my O2 Sensors?
  5. PCM? What now
  6. My timesert kit on ebay, reserve at $160!
  7. No speedo!!!
  8. Carbon buildup/ fuel additives/ opinions???
  9. 95 sts starting problems
  10. Should I fix or sell?
  11. could be 1 or 2 things idler pulley or water pump plz help
  12. Northstar driven 94 Pontiac Grand Prix GTP RWD
  13. Leaking Water Pump 1998 Deville
  14. Smoking Northstar!
  15. Engine rebuilt?
  16. Northstar Squealing noise
  17. Oil change
  18. performance exhaust
  19. '94 Concours Hard To Start
  20. P0113/P1111 - then what ?
  21. whast should a 94 north start run temp wise
  22. Changing Serpentine Belt
  23. Custom Intake
  24. Maintaining Northstar Engines *A must Read*
  25. Headgasket replacement finished
  26. N* engine mount bushings...what happens if...
  27. How to remove the belt tensioner?
  28. New Cadillac owner
  29. TO 73 code??????
  30. What are my options?
  31. 2000 DeVille - Stalling
  32. Temp Sensor
  33. Misfirin' 98 DeVille. How much $ is DTC p0300,603,1381 cost?
  34. Temperature sensor - another problem...
  35. 4 Questions / 93 STS w/ 4.6
  36. Lights flicker?
  37. lights that dim when...
  38. Glitch In 97 Concours
  39. alternator replacement part deux
  40. P086 code on 94 STS keep sme from getting it smogged
  41. Calling out 156mph
  42. Cadillac dealer...
  43. ShadowLvr400......
  44. 4.6 northstar / engine, Trans swap ?
  45. TRANSMISSION/Torque convertor problems??? HELP!!!
  46. Nitrous
  47. More on coolant issues....Long post alert!
  48. '95 STS Clearing on-board diagnostic codes
  49. Quick and Simple Question
  50. 2000 STS Oil Life
  51. Calling all North* Specialist....Changing out the Alternator
  52. Service Engine Soon? What's that Noise?
  53. Dashboard mayhem
  54. weird?
  55. Need Technical Help for Engine swaping...
  56. Anyone have an opinion on electric superchargers?
  57. Will '95 coil pack, intake or exhaust fit my '93 N*?
  58. northstar performance upgrades
  59. Exhaust manifold ?
  60. Please help! Considering a '94 Deville Concours N'star
  61. New member, trying to find out if oil burning is ok!
  62. Repair Advice Needed in Orange County, CA
  63. P030 Code on '93 STS
  64. "no battery charge"
  65. "check oil level"
  66. '95 STS showing SES code: P085
  67. Which o2 sensor??
  68. Code PO24-VSS Signal To TCC-Where is It Located At?
  69. TPS - Problems
  70. thermal meltdown of n* engine ?
  71. Are Gremlins pinching my fuel line? ARGHHH!!
  72. 2002 engine into 97 Deville?
  73. Tune up?
  74. Freeze plugs ( So called )
  75. 94 Concourse Shifting Problem
  76. I smell gas in my 95 concours
  77. message
  78. update on my 97 concours
  79. NA power out of a North*?
  80. 2002 what does loss of dim communication?
  81. Turbos put back?
  82. Leaking Heater Core in 1999 DeVelle
  83. Overheating: Am I screwed?
  84. Bolting filter right on the motor
  85. 94 Eldorado Oil level sensor problem
  86. o2 sensors!!!!!! argggggggg
  87. Help Codes Driving Me Insane
  88. Funny Smell
  89. 94 Seville STS History Codes???
  90. Emissions Code on 1996 STS
  91. Real unhappy with (my new) used caddy - Can't ID the DTC's
  92. Opinions on possible purchase 91 Deville
  93. Signs you need a tuneup?
  94. R/r water pump
  95. Help Me!
  96. Hard Starting STS
  97. OBD2 Reprogramming
  98. Chip or no chip?
  99. Northstar R&R Book Times
  100. Northstars & oil consumption...are there "good" & "bad" motors?
  101. 275hp to 300hp head swap question
  102. Northstar Aftermarket Support
  103. Do Northstars burn oil fast???
  104. Help!!
  105. Northstar overheating
  106. Most common problems with NS motor
  107. Engine size ?????
  108. What is the deal with the Crank Position Sensor and...
  109. sneaky coolant leak, Northstar
  110. Bad plug wires get you crazy codes
  111. stupid dipstick
  112. N* Head Gasket repair part I/ Remove engine
  113. idle speed adjust?
  114. Belt Question
  115. Emissions System
  116. 99 SLS probelms
  117. help with codes?
  118. Head Work
  119. New person here - piston replacement question
  120. How to get to plugs on 00 STS?
  121. 1995 SLS Engine and Trans
  122. tps 1995 sts adjusted
  123. are the '93 and '95 northstar computers the same?
  124. Cracked Water Pump Housing Northstar
  125. Erratic fuel level gauge & a few other ???
  126. Time serts head gaskets and cadillac refunds
  127. 1990 Sedan Deville Valve Job
  128. Limited slip...sort of
  129. Octane reading
  130. Check Oilk Level wont stop
  131. Please help..engine coolant ?....
  132. Traction Control on STS ???
  133. 96 Seville, Check Engine Light, New owner?
  134. Help with cooling system
  135. ? on seville northstar motor?
  136. Help! I have a 1997 Concours(traction c) I would love to know where this wire goes??
  137. maintenence records?
  138. rear windows fog up
  139. Northstar - Golf swap
  140. PCM codes
  141. 1997 Deville problems
  142. Smelling Coolant inside - 93 STS
  143. Battery Replacement on 95 STS
  144. Service Brake Fluid Switch
  145. Transmition shifting ?'s
  146. Engine cutout 93STS north*
  147. Oil Life Message Problem
  148. Can I get some pictures (N* mounting)?
  149. OBD codes
  150. 95-sts wont start
  151. idle sts-95
  152. Anyone know where I can find cheap o2 sensors?!
  153. So....someone wanna rent me a timesert kit?
  154. Ignition module failure?
  155. Need help understanding a code
  156. Best oil for Northstar engines?
  157. Northstar questions: engine and tranny mounts
  158. Service Engine Light
  159. Idle speed
  160. Intermitant DTC P1416, where do I start looking?
  161. phenolic spacers cleaning
  162. Regular Unleaded
  163. Throttle Body
  164. 97 Concours....SOLD!
  165. Help Codes
  166. Thermostat
  167. 4.0/4.6 Combustion Chambers
  168. Intake air sensor / resistor mod
  169. valve job? something burning......
  170. Easy method of telling you need a coolant change!!!!!
  171. 97 dedan deville speedometer display out...
  172. 4.6L engine knock at idle
  173. High Performance driving
  174. Starting Issue
  175. High octane
  176. 4.6L engine knock at idle
  177. Headgaskets
  178. hard starting, won't pass smog symptoms
  179. Info on converter lock,,code PO39
  180. Northstar engine numbers
  181. Locking converter/check engine SOON
  182. How to replace front motor MOUNT
  183. can any one help
  184. Motor Rocks
  185. Torque converter lockup?
  186. Help!
  187. Regular Gas
  188. Nitrous Kit for Northstars - It exists
  189. why do people tell me northstars are junk?
  190. Coolant Loss
  191. VERY slight valve knock on '98 STS Northstar?
  192. Won't shift out of 1st gear
  193. Let's get some performance parts!
  194. Just how fragile are they?
  195. experienced mechanic in Los Angeles
  196. RWD 5-speeds
  197. Let's get an OBD Programmer...
  198. Limiters on 96 STS
  199. 1996 northstar in 95 eldorado - Strange things happening!
  200. Technical Photo Section?
  201. service engine light is on
  202. engine compatibility
  203. code help please
  204. 99' STS low-end torque is sluggish?
  205. Blessed With Head Gasket Leakage as Well...
  206. timesert kit
  207. performance pcm/ecu mods ODB II (96+ ) (i.e. 1999 sts)
  208. Can the 300 HP be swapped with 275 HP motor?
  209. North star motor swap
  210. Diagnostic codes and running rough
  211. cam timing tool
  212. Hard Shifting Transmision
  213. Squeek, scrape, whir.
  214. transmission removal in 94 eldorado???
  215. 2001 seville sparkplug location
  216. need advice-- cooling
  217. engine removal and install procedures
  218. Temperature problem???
  219. Starter replacement, what is the easiest way?
  220. Bearings?
  221. are northstars interferene engines?
  222. northstar head warpage?
  223. "LOW ENGINE COOLANT" came on...
  224. timeserts
  225. Northstar idle speed motor instsall
  226. Rss (c)1743, 1783, 1785 ??
  227. 4T80E drain plug location?
  228. Missfire 93 sts
  229. Idle is higher than normal and fluctuates
  230. STS 13:63, you ask how?
  231. Ok I can check my codes but how do you check them individually?
  232. Cadillac Hot Rodders!
  233. Keyless Entry Programming Procedure
  234. How to change Trans. Fluid?
  235. Borla exhaust needs your help
  236. Where's the Chip?
  237. Battery No Charge light on/ Alternator?
  238. New Owner Can I work on My Seville N* myself? Is it too electronic?
  239. northstars
  240. I am New here
  241. spark plug wires
  242. Sudden Stall
  243. What would you do? (fun project)
  244. Problems that were fixed (technical question)
  245. Waterpump Replacement
  246. I broke it!!
  247. 1999 Caddy Seville Sts
  248. High Mileage Northstar Thread: Who can beat me?
  249. 120,000 Miles on a Northstar?
  250. Rusted Fuel Filter