: Northstar Engines and System Technical Discussion



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  1. Northstar overheating
  2. Most common problems with NS motor
  3. Engine size ?????
  4. What is the deal with the Crank Position Sensor and...
  5. sneaky coolant leak, Northstar
  6. Bad plug wires get you crazy codes
  7. stupid dipstick
  8. N* Head Gasket repair part I/ Remove engine
  9. idle speed adjust?
  10. Belt Question
  11. Emissions System
  12. 99 SLS probelms
  13. help with codes?
  14. Head Work
  15. New person here - piston replacement question
  16. How to get to plugs on 00 STS?
  17. 1995 SLS Engine and Trans
  18. tps 1995 sts adjusted
  19. are the '93 and '95 northstar computers the same?
  20. Cracked Water Pump Housing Northstar
  21. Erratic fuel level gauge & a few other ???
  22. Time serts head gaskets and cadillac refunds
  23. 1990 Sedan Deville Valve Job
  24. Limited slip...sort of
  25. Octane reading
  26. Check Oilk Level wont stop
  27. Please help..engine coolant ?....
  28. Traction Control on STS ???
  29. 96 Seville, Check Engine Light, New owner?
  30. Help with cooling system
  31. ? on seville northstar motor?
  32. Help! I have a 1997 Concours(traction c) I would love to know where this wire goes??
  33. maintenence records?
  34. rear windows fog up
  35. Northstar - Golf swap
  36. PCM codes
  37. 1997 Deville problems
  38. Smelling Coolant inside - 93 STS
  39. Battery Replacement on 95 STS
  40. Service Brake Fluid Switch
  41. Transmition shifting ?'s
  42. Engine cutout 93STS north*
  43. Oil Life Message Problem
  44. Can I get some pictures (N* mounting)?
  45. OBD codes
  46. 95-sts wont start
  47. idle sts-95
  48. Anyone know where I can find cheap o2 sensors?!
  49. So....someone wanna rent me a timesert kit?
  50. Ignition module failure?
  51. Need help understanding a code
  52. Best oil for Northstar engines?
  53. Northstar questions: engine and tranny mounts
  54. Service Engine Light
  55. Idle speed
  56. Intermitant DTC P1416, where do I start looking?
  57. phenolic spacers cleaning
  58. Regular Unleaded
  59. Throttle Body
  60. 97 Concours....SOLD!
  61. Help Codes
  62. Thermostat
  63. 4.0/4.6 Combustion Chambers
  64. Intake air sensor / resistor mod
  65. valve job? something burning......
  66. Easy method of telling you need a coolant change!!!!!
  67. 97 dedan deville speedometer display out...
  68. 4.6L engine knock at idle
  69. High Performance driving
  70. Starting Issue
  71. High octane
  72. 4.6L engine knock at idle
  73. Headgaskets
  74. hard starting, won't pass smog symptoms
  75. Info on converter lock,,code PO39
  76. Northstar engine numbers
  77. Locking converter/check engine SOON
  78. How to replace front motor MOUNT
  79. can any one help
  80. Motor Rocks
  81. Torque converter lockup?
  82. Help!
  83. Regular Gas
  84. Nitrous Kit for Northstars - It exists
  85. why do people tell me northstars are junk?
  86. Coolant Loss
  87. VERY slight valve knock on '98 STS Northstar?
  88. Won't shift out of 1st gear
  89. Let's get some performance parts!
  90. Just how fragile are they?
  91. experienced mechanic in Los Angeles
  92. RWD 5-speeds
  93. Let's get an OBD Programmer...
  94. Limiters on 96 STS
  95. 1996 northstar in 95 eldorado - Strange things happening!
  96. Technical Photo Section?
  97. service engine light is on
  98. engine compatibility
  99. code help please
  100. 99' STS low-end torque is sluggish?
  101. Blessed With Head Gasket Leakage as Well...
  102. timesert kit
  103. performance pcm/ecu mods ODB II (96+ ) (i.e. 1999 sts)
  104. Can the 300 HP be swapped with 275 HP motor?
  105. North star motor swap
  106. Diagnostic codes and running rough
  107. cam timing tool
  108. Hard Shifting Transmision
  109. Squeek, scrape, whir.
  110. transmission removal in 94 eldorado???
  111. 2001 seville sparkplug location
  112. need advice-- cooling
  113. engine removal and install procedures
  114. Temperature problem???
  115. Starter replacement, what is the easiest way?
  116. Bearings?
  117. are northstars interferene engines?
  118. northstar head warpage?
  119. "LOW ENGINE COOLANT" came on...
  120. timeserts
  121. Northstar idle speed motor instsall
  122. Rss (c)1743, 1783, 1785 ??
  123. 4T80E drain plug location?
  124. Missfire 93 sts
  125. Idle is higher than normal and fluctuates
  126. STS 13:63, you ask how?
  127. Ok I can check my codes but how do you check them individually?
  128. Cadillac Hot Rodders!
  129. Keyless Entry Programming Procedure
  130. How to change Trans. Fluid?
  131. Borla exhaust needs your help
  132. Where's the Chip?
  133. Battery No Charge light on/ Alternator?
  134. New Owner Can I work on My Seville N* myself? Is it too electronic?
  135. northstars
  136. I am New here
  137. spark plug wires
  138. Sudden Stall
  139. What would you do? (fun project)
  140. Problems that were fixed (technical question)
  141. Waterpump Replacement
  142. I broke it!!
  143. 1999 Caddy Seville Sts
  144. High Mileage Northstar Thread: Who can beat me?
  145. 120,000 Miles on a Northstar?
  146. Rusted Fuel Filter
  147. Need some technical help/ suggestions from guys that know!!
  148. turbo for a northstar?
  149. Difference in 275HP & 300HP Engines
  150. Heads
  151. What size rims ....... (technical info)
  152. 95 SLS how to check coolant levels?
  153. Looking for Time sert kit
  154. Mobil 1 Synthetic Oil
  155. Screen in the intake system
  156. 100,000+ questions
  157. PVC Valve and Fuel Filter
  158. how to seperate the trans form the motor etc
  159. Ways to tell if your northstar motor is blown........look
  160. General Deville Maintenance
  161. New street rodder issue has N* Part 2!
  162. Need supporting info RE: 4.6 head bolts
  163. Northstar motor blown at 80,000 help...........
  164. Throttel Body Plate Size ???
  165. Caddy transplant
  166. 00 - 03 Seville questions:
  167. Northstar oil burning - what to do?
  168. That Coolant thing...
  169. B1136
  170. Allante losing coolant via bypass
  171. 2000 Dts - Rough Idle
  172. Resetting Change Oil Message
  173. finally made a few mods to the STS
  174. Knock sensor blues!!!
  175. Emission Message
  176. New Struts? When to replace them.
  177. Oil
  178. STSi heads availability
  179. seeping head gasket
  180. Premium Fuel
  181. just wanted to say hi to everyone!!!!!
  182. NOS on northstar??
  183. engine squeeking
  184. Engine Problems?
  185. Engine/Coolant Temp?
  186. How much to rebuild a northstar?
  187. Is there a SLS/STS performance chip/programer yet?
  188. how to turn off tractin
  189. "Check Oil Level"
  190. coolant color
  191. Firing order-
  192. engine miss
  193. North* with a manual?????
  194. Gasoline question
  195. sls tranny problem
  196. Hot Rod Caddy or LS1?
  197. upper motor mount part numbers?
  198. Cooling system sealants....
  199. A word about air filters
  200. Some Interesting facts...
  201. Transmission valve box?
  202. SES light
  203. Northstar STS story
  204. Clearing codes
  205. Oil in Coolant
  206. Is it just me, or did they use a shoehorn to get the N'Star under the hood of my STS?
  207. 2K 4.6 NS- No worries or no probs mentioned YET??
  208. Intermittent Hesitation
  209. Hey guys..quick question!
  210. How Strong is the Northstar Bottom End?
  211. tranny slipage on 97 deville
  212. Northstar 4.0L seems a little hot. Removed Thermostat. Bad Idea?
  213. Operating Temp??????
  214. Maintain Cooling system?
  215. Northstar Pull Question
  216. cracked spark plug
  217. 98+ Seville Free cold air intake mod
  218. Clearing Codes
  219. Check Coolent Level Keeps showing up
  220. blown headgasket
  221. 1994 Concours Transmission Question
  222. burned exhaust valve's ?!?!
  223. The Northstar Issue
  224. Head gasket or??? HELP Plz
  225. My 1997 ETC
  226. Nitrous Systems
  227. anyone with subscription, willing to run carfax for me?
  228. fuel rail
  229. Cadillac 32v Northstar 1993
  230. 98 Concours
  231. Blown head gasket
  232. Stabilzer Links
  233. Northstar Motor Intakes
  234. Rebuilding my Northstar please help!
  235. hot weather and hot northstar..HELP!
  236. 94 SLS Radiator
  237. Unusual Howling noise.
  238. Northstar Heating Up
  239. Throttle Body Bypass
  240. Ignition coil or ignition module ?
  241. stupid POS Alternator!!!
  242. a/c compressor/ clutch removal-install
  243. Cooling Fan Relay Location
  244. Tranny code P0741 & P1860
  245. Eldorado ?
  246. water pump pulley
  247. What can I do to push my '93 Eldo to the max?
  248. Northstar rods
  249. Interesting data
  250. Pic of STS removed resonator with chrome plug