: Northstar Engines and System Technical Discussion



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