: Northstar Engines and System Technical Discussion



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  1. 94 Concourse Shifting Problem
  2. I smell gas in my 95 concours
  3. message
  4. update on my 97 concours
  5. NA power out of a North*?
  6. 2002 what does loss of dim communication?
  7. Turbos put back?
  8. Leaking Heater Core in 1999 DeVelle
  9. Overheating: Am I screwed?
  10. Bolting filter right on the motor
  11. 94 Eldorado Oil level sensor problem
  12. o2 sensors!!!!!! argggggggg
  13. Help Codes Driving Me Insane
  14. Funny Smell
  15. 94 Seville STS History Codes???
  16. Emissions Code on 1996 STS
  17. Real unhappy with (my new) used caddy - Can't ID the DTC's
  18. Opinions on possible purchase 91 Deville
  19. Signs you need a tuneup?
  20. R/r water pump
  21. Help Me!
  22. Hard Starting STS
  23. OBD2 Reprogramming
  24. Chip or no chip?
  25. Northstar R&R Book Times
  26. Northstars & oil consumption...are there "good" & "bad" motors?
  27. 275hp to 300hp head swap question
  28. Northstar Aftermarket Support
  29. Do Northstars burn oil fast???
  30. Help!!
  31. Northstar overheating
  32. Most common problems with NS motor
  33. Engine size ?????
  34. What is the deal with the Crank Position Sensor and...
  35. sneaky coolant leak, Northstar
  36. Bad plug wires get you crazy codes
  37. stupid dipstick
  38. N* Head Gasket repair part I/ Remove engine
  39. idle speed adjust?
  40. Belt Question
  41. Emissions System
  42. 99 SLS probelms
  43. help with codes?
  44. Head Work
  45. New person here - piston replacement question
  46. How to get to plugs on 00 STS?
  47. 1995 SLS Engine and Trans
  48. tps 1995 sts adjusted
  49. are the '93 and '95 northstar computers the same?
  50. Cracked Water Pump Housing Northstar
  51. Erratic fuel level gauge & a few other ???
  52. Time serts head gaskets and cadillac refunds
  53. 1990 Sedan Deville Valve Job
  54. Limited slip...sort of
  55. Octane reading
  56. Check Oilk Level wont stop
  57. Please help..engine coolant ?....
  58. Traction Control on STS ???
  59. 96 Seville, Check Engine Light, New owner?
  60. Help with cooling system
  61. ? on seville northstar motor?
  62. Help! I have a 1997 Concours(traction c) I would love to know where this wire goes??
  63. maintenence records?
  64. rear windows fog up
  65. Northstar - Golf swap
  66. PCM codes
  67. 1997 Deville problems
  68. Smelling Coolant inside - 93 STS
  69. Battery Replacement on 95 STS
  70. Service Brake Fluid Switch
  71. Transmition shifting ?'s
  72. Engine cutout 93STS north*
  73. Oil Life Message Problem
  74. Can I get some pictures (N* mounting)?
  75. OBD codes
  76. 95-sts wont start
  77. idle sts-95
  78. Anyone know where I can find cheap o2 sensors?!
  79. So....someone wanna rent me a timesert kit?
  80. Ignition module failure?
  81. Need help understanding a code
  82. Best oil for Northstar engines?
  83. Northstar questions: engine and tranny mounts
  84. Service Engine Light
  85. Idle speed
  86. Intermitant DTC P1416, where do I start looking?
  87. phenolic spacers cleaning
  88. Regular Unleaded
  89. Throttle Body
  90. 97 Concours....SOLD!
  91. Help Codes
  92. Thermostat
  93. 4.0/4.6 Combustion Chambers
  94. Intake air sensor / resistor mod
  95. valve job? something burning......
  96. Easy method of telling you need a coolant change!!!!!
  97. 97 dedan deville speedometer display out...
  98. 4.6L engine knock at idle
  99. High Performance driving
  100. Starting Issue
  101. High octane
  102. 4.6L engine knock at idle
  103. Headgaskets
  104. hard starting, won't pass smog symptoms
  105. Info on converter lock,,code PO39
  106. Northstar engine numbers
  107. Locking converter/check engine SOON
  108. How to replace front motor MOUNT
  109. can any one help
  110. Motor Rocks
  111. Torque converter lockup?
  112. Help!
  113. Regular Gas
  114. Nitrous Kit for Northstars - It exists
  115. why do people tell me northstars are junk?
  116. Coolant Loss
  117. VERY slight valve knock on '98 STS Northstar?
  118. Won't shift out of 1st gear
  119. Let's get some performance parts!
  120. Just how fragile are they?
  121. experienced mechanic in Los Angeles
  122. RWD 5-speeds
  123. Let's get an OBD Programmer...
  124. Limiters on 96 STS
  125. 1996 northstar in 95 eldorado - Strange things happening!
  126. Technical Photo Section?
  127. service engine light is on
  128. engine compatibility
  129. code help please
  130. 99' STS low-end torque is sluggish?
  131. Blessed With Head Gasket Leakage as Well...
  132. timesert kit
  133. performance pcm/ecu mods ODB II (96+ ) (i.e. 1999 sts)
  134. Can the 300 HP be swapped with 275 HP motor?
  135. North star motor swap
  136. Diagnostic codes and running rough
  137. cam timing tool
  138. Hard Shifting Transmision
  139. Squeek, scrape, whir.
  140. transmission removal in 94 eldorado???
  141. 2001 seville sparkplug location
  142. need advice-- cooling
  143. engine removal and install procedures
  144. Temperature problem???
  145. Starter replacement, what is the easiest way?
  146. Bearings?
  147. are northstars interferene engines?
  148. northstar head warpage?
  149. "LOW ENGINE COOLANT" came on...
  150. timeserts
  151. Northstar idle speed motor instsall
  152. Rss (c)1743, 1783, 1785 ??
  153. 4T80E drain plug location?
  154. Missfire 93 sts
  155. Idle is higher than normal and fluctuates
  156. STS 13:63, you ask how?
  157. Ok I can check my codes but how do you check them individually?
  158. Cadillac Hot Rodders!
  159. Keyless Entry Programming Procedure
  160. How to change Trans. Fluid?
  161. Borla exhaust needs your help
  162. Where's the Chip?
  163. Battery No Charge light on/ Alternator?
  164. New Owner Can I work on My Seville N* myself? Is it too electronic?
  165. northstars
  166. I am New here
  167. spark plug wires
  168. Sudden Stall
  169. What would you do? (fun project)
  170. Problems that were fixed (technical question)
  171. Waterpump Replacement
  172. I broke it!!
  173. 1999 Caddy Seville Sts
  174. High Mileage Northstar Thread: Who can beat me?
  175. 120,000 Miles on a Northstar?
  176. Rusted Fuel Filter
  177. Need some technical help/ suggestions from guys that know!!
  178. turbo for a northstar?
  179. Difference in 275HP & 300HP Engines
  180. Heads
  181. What size rims ....... (technical info)
  182. 95 SLS how to check coolant levels?
  183. Looking for Time sert kit
  184. Mobil 1 Synthetic Oil
  185. Screen in the intake system
  186. 100,000+ questions
  187. PVC Valve and Fuel Filter
  188. how to seperate the trans form the motor etc
  189. Ways to tell if your northstar motor is blown........look
  190. General Deville Maintenance
  191. New street rodder issue has N* Part 2!
  192. Need supporting info RE: 4.6 head bolts
  193. Northstar motor blown at 80,000 help...........
  194. Throttel Body Plate Size ???
  195. Caddy transplant
  196. 00 - 03 Seville questions:
  197. Northstar oil burning - what to do?
  198. That Coolant thing...
  199. B1136
  200. Allante losing coolant via bypass
  201. 2000 Dts - Rough Idle
  202. Resetting Change Oil Message
  203. finally made a few mods to the STS
  204. Knock sensor blues!!!
  205. Emission Message
  206. New Struts? When to replace them.
  207. Oil
  208. STSi heads availability
  209. seeping head gasket
  210. Premium Fuel
  211. just wanted to say hi to everyone!!!!!
  212. NOS on northstar??
  213. engine squeeking
  214. Engine Problems?
  215. Engine/Coolant Temp?
  216. How much to rebuild a northstar?
  217. Is there a SLS/STS performance chip/programer yet?
  218. how to turn off tractin
  219. "Check Oil Level"
  220. coolant color
  221. Firing order-
  222. engine miss
  223. North* with a manual?????
  224. Gasoline question
  225. sls tranny problem
  226. Hot Rod Caddy or LS1?
  227. upper motor mount part numbers?
  228. Cooling system sealants....
  229. A word about air filters
  230. Some Interesting facts...
  231. Transmission valve box?
  232. SES light
  233. Northstar STS story
  234. Clearing codes
  235. Oil in Coolant
  236. Is it just me, or did they use a shoehorn to get the N'Star under the hood of my STS?
  237. 2K 4.6 NS- No worries or no probs mentioned YET??
  238. Intermittent Hesitation
  239. Hey guys..quick question!
  240. How Strong is the Northstar Bottom End?
  241. tranny slipage on 97 deville
  242. Northstar 4.0L seems a little hot. Removed Thermostat. Bad Idea?
  243. Operating Temp??????
  244. Maintain Cooling system?
  245. Northstar Pull Question
  246. cracked spark plug
  247. 98+ Seville Free cold air intake mod
  248. Clearing Codes
  249. Check Coolent Level Keeps showing up
  250. blown headgasket