: Northstar Engines and System Technical Discussion



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