: Northstar Engines and System Technical Discussion



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