: Northstar Engines and System Technical Discussion



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  1. 1990 Sedan Deville Valve Job
  2. Limited slip...sort of
  3. Octane reading
  4. Check Oilk Level wont stop
  5. Please help..engine coolant ?....
  6. Traction Control on STS ???
  7. 96 Seville, Check Engine Light, New owner?
  8. Help with cooling system
  9. ? on seville northstar motor?
  10. Help! I have a 1997 Concours(traction c) I would love to know where this wire goes??
  11. maintenence records?
  12. rear windows fog up
  13. Northstar - Golf swap
  14. PCM codes
  15. 1997 Deville problems
  16. Smelling Coolant inside - 93 STS
  17. Battery Replacement on 95 STS
  18. Service Brake Fluid Switch
  19. Transmition shifting ?'s
  20. Engine cutout 93STS north*
  21. Oil Life Message Problem
  22. Can I get some pictures (N* mounting)?
  23. OBD codes
  24. 95-sts wont start
  25. idle sts-95
  26. Anyone know where I can find cheap o2 sensors?!
  27. So....someone wanna rent me a timesert kit?
  28. Ignition module failure?
  29. Need help understanding a code
  30. Best oil for Northstar engines?
  31. Northstar questions: engine and tranny mounts
  32. Service Engine Light
  33. Idle speed
  34. Intermitant DTC P1416, where do I start looking?
  35. phenolic spacers cleaning
  36. Regular Unleaded
  37. Throttle Body
  38. 97 Concours....SOLD!
  39. Help Codes
  40. Thermostat
  41. 4.0/4.6 Combustion Chambers
  42. Intake air sensor / resistor mod
  43. valve job? something burning......
  44. Easy method of telling you need a coolant change!!!!!
  45. 97 dedan deville speedometer display out...
  46. 4.6L engine knock at idle
  47. High Performance driving
  48. Starting Issue
  49. High octane
  50. 4.6L engine knock at idle
  51. Headgaskets
  52. hard starting, won't pass smog symptoms
  53. Info on converter lock,,code PO39
  54. Northstar engine numbers
  55. Locking converter/check engine SOON
  56. How to replace front motor MOUNT
  57. can any one help
  58. Motor Rocks
  59. Torque converter lockup?
  60. Help!
  61. Regular Gas
  62. Nitrous Kit for Northstars - It exists
  63. why do people tell me northstars are junk?
  64. Coolant Loss
  65. VERY slight valve knock on '98 STS Northstar?
  66. Won't shift out of 1st gear
  67. Let's get some performance parts!
  68. Just how fragile are they?
  69. experienced mechanic in Los Angeles
  70. RWD 5-speeds
  71. Let's get an OBD Programmer...
  72. Limiters on 96 STS
  73. 1996 northstar in 95 eldorado - Strange things happening!
  74. Technical Photo Section?
  75. service engine light is on
  76. engine compatibility
  77. code help please
  78. 99' STS low-end torque is sluggish?
  79. Blessed With Head Gasket Leakage as Well...
  80. timesert kit
  81. performance pcm/ecu mods ODB II (96+ ) (i.e. 1999 sts)
  82. Can the 300 HP be swapped with 275 HP motor?
  83. North star motor swap
  84. Diagnostic codes and running rough
  85. cam timing tool
  86. Hard Shifting Transmision
  87. Squeek, scrape, whir.
  88. transmission removal in 94 eldorado???
  89. 2001 seville sparkplug location
  90. need advice-- cooling
  91. engine removal and install procedures
  92. Temperature problem???
  93. Starter replacement, what is the easiest way?
  94. Bearings?
  95. are northstars interferene engines?
  96. northstar head warpage?
  97. "LOW ENGINE COOLANT" came on...
  98. timeserts
  99. Northstar idle speed motor instsall
  100. Rss (c)1743, 1783, 1785 ??
  101. 4T80E drain plug location?
  102. Missfire 93 sts
  103. Idle is higher than normal and fluctuates
  104. STS 13:63, you ask how?
  105. Ok I can check my codes but how do you check them individually?
  106. Cadillac Hot Rodders!
  107. Keyless Entry Programming Procedure
  108. How to change Trans. Fluid?
  109. Borla exhaust needs your help
  110. Where's the Chip?
  111. Battery No Charge light on/ Alternator?
  112. New Owner Can I work on My Seville N* myself? Is it too electronic?
  113. northstars
  114. I am New here
  115. spark plug wires
  116. Sudden Stall
  117. What would you do? (fun project)
  118. Problems that were fixed (technical question)
  119. Waterpump Replacement
  120. I broke it!!
  121. 1999 Caddy Seville Sts
  122. High Mileage Northstar Thread: Who can beat me?
  123. 120,000 Miles on a Northstar?
  124. Rusted Fuel Filter
  125. Need some technical help/ suggestions from guys that know!!
  126. turbo for a northstar?
  127. Difference in 275HP & 300HP Engines
  128. Heads
  129. What size rims ....... (technical info)
  130. 95 SLS how to check coolant levels?
  131. Looking for Time sert kit
  132. Mobil 1 Synthetic Oil
  133. Screen in the intake system
  134. 100,000+ questions
  135. PVC Valve and Fuel Filter
  136. how to seperate the trans form the motor etc
  137. Ways to tell if your northstar motor is blown........look
  138. General Deville Maintenance
  139. New street rodder issue has N* Part 2!
  140. Need supporting info RE: 4.6 head bolts
  141. Northstar motor blown at 80,000 help...........
  142. Throttel Body Plate Size ???
  143. Caddy transplant
  144. 00 - 03 Seville questions:
  145. Northstar oil burning - what to do?
  146. That Coolant thing...
  147. B1136
  148. Allante losing coolant via bypass
  149. 2000 Dts - Rough Idle
  150. Resetting Change Oil Message
  151. finally made a few mods to the STS
  152. Knock sensor blues!!!
  153. Emission Message
  154. New Struts? When to replace them.
  155. Oil
  156. STSi heads availability
  157. seeping head gasket
  158. Premium Fuel
  159. just wanted to say hi to everyone!!!!!
  160. NOS on northstar??
  161. engine squeeking
  162. Engine Problems?
  163. Engine/Coolant Temp?
  164. How much to rebuild a northstar?
  165. Is there a SLS/STS performance chip/programer yet?
  166. how to turn off tractin
  167. "Check Oil Level"
  168. coolant color
  169. Firing order-
  170. engine miss
  171. North* with a manual?????
  172. Gasoline question
  173. sls tranny problem
  174. Hot Rod Caddy or LS1?
  175. upper motor mount part numbers?
  176. Cooling system sealants....
  177. A word about air filters
  178. Some Interesting facts...
  179. Transmission valve box?
  180. SES light
  181. Northstar STS story
  182. Clearing codes
  183. Oil in Coolant
  184. Is it just me, or did they use a shoehorn to get the N'Star under the hood of my STS?
  185. 2K 4.6 NS- No worries or no probs mentioned YET??
  186. Intermittent Hesitation
  187. Hey guys..quick question!
  188. How Strong is the Northstar Bottom End?
  189. tranny slipage on 97 deville
  190. Northstar 4.0L seems a little hot. Removed Thermostat. Bad Idea?
  191. Operating Temp??????
  192. Maintain Cooling system?
  193. Northstar Pull Question
  194. cracked spark plug
  195. 98+ Seville Free cold air intake mod
  196. Clearing Codes
  197. Check Coolent Level Keeps showing up
  198. blown headgasket
  199. 1994 Concours Transmission Question
  200. burned exhaust valve's ?!?!
  201. The Northstar Issue
  202. Head gasket or??? HELP Plz
  203. My 1997 ETC
  204. Nitrous Systems
  205. anyone with subscription, willing to run carfax for me?
  206. fuel rail
  207. Cadillac 32v Northstar 1993
  208. 98 Concours
  209. Blown head gasket
  210. Stabilzer Links
  211. Northstar Motor Intakes
  212. Rebuilding my Northstar please help!
  213. hot weather and hot northstar..HELP!
  214. 94 SLS Radiator
  215. Unusual Howling noise.
  216. Northstar Heating Up
  217. Throttle Body Bypass
  218. Ignition coil or ignition module ?
  219. stupid POS Alternator!!!
  220. a/c compressor/ clutch removal-install
  221. Cooling Fan Relay Location
  222. Tranny code P0741 & P1860
  223. Eldorado ?
  224. water pump pulley
  225. What can I do to push my '93 Eldo to the max?
  226. Northstar rods
  227. Interesting data
  228. Pic of STS removed resonator with chrome plug
  229. Gold vs. Silver On Northstar? Huh?
  230. 1993 - 1995 Northstar Chip Mods
  231. motor swap
  232. limp home mode
  233. Sealant tabs
  234. go fast parts
  235. Water Leakage
  236. Increase 96-03 Cadillac performance $1200
  237. Free mods?
  238. How to Diagnose
  239. electric fan override?
  240. Northstar Intake Cover
  241. Oil Life indicator
  242. Going to the 1/4 track in June. Suggestions?
  243. 2000 Cadillac stalling
  244. Free HP
  245. Anyone know if they make a NOS system?
  246. Key programming
  247. Accessing the OBD2 in your caddi
  248. Lucky ME! A workable dealer!
  249. Overheating Northstar
  250. Changing Spark plugs and Spark plug wires (Tuneup)