: Northstar Engines and System Technical Discussion



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  1. message
  2. update on my 97 concours
  3. NA power out of a North*?
  4. 2002 what does loss of dim communication?
  5. Turbos put back?
  6. Leaking Heater Core in 1999 DeVelle
  7. Overheating: Am I screwed?
  8. Bolting filter right on the motor
  9. 94 Eldorado Oil level sensor problem
  10. o2 sensors!!!!!! argggggggg
  11. Help Codes Driving Me Insane
  12. Funny Smell
  13. 94 Seville STS History Codes???
  14. Emissions Code on 1996 STS
  15. Real unhappy with (my new) used caddy - Can't ID the DTC's
  16. Opinions on possible purchase 91 Deville
  17. Signs you need a tuneup?
  18. R/r water pump
  19. Help Me!
  20. Hard Starting STS
  21. OBD2 Reprogramming
  22. Chip or no chip?
  23. Northstar R&R Book Times
  24. Northstars & oil consumption...are there "good" & "bad" motors?
  25. 275hp to 300hp head swap question
  26. Northstar Aftermarket Support
  27. Do Northstars burn oil fast???
  28. Help!!
  29. Northstar overheating
  30. Most common problems with NS motor
  31. Engine size ?????
  32. What is the deal with the Crank Position Sensor and...
  33. sneaky coolant leak, Northstar
  34. Bad plug wires get you crazy codes
  35. stupid dipstick
  36. N* Head Gasket repair part I/ Remove engine
  37. idle speed adjust?
  38. Belt Question
  39. Emissions System
  40. 99 SLS probelms
  41. help with codes?
  42. Head Work
  43. New person here - piston replacement question
  44. How to get to plugs on 00 STS?
  45. 1995 SLS Engine and Trans
  46. tps 1995 sts adjusted
  47. are the '93 and '95 northstar computers the same?
  48. Cracked Water Pump Housing Northstar
  49. Erratic fuel level gauge & a few other ???
  50. Time serts head gaskets and cadillac refunds
  51. 1990 Sedan Deville Valve Job
  52. Limited slip...sort of
  53. Octane reading
  54. Check Oilk Level wont stop
  55. Please help..engine coolant ?....
  56. Traction Control on STS ???
  57. 96 Seville, Check Engine Light, New owner?
  58. Help with cooling system
  59. ? on seville northstar motor?
  60. Help! I have a 1997 Concours(traction c) I would love to know where this wire goes??
  61. maintenence records?
  62. rear windows fog up
  63. Northstar - Golf swap
  64. PCM codes
  65. 1997 Deville problems
  66. Smelling Coolant inside - 93 STS
  67. Battery Replacement on 95 STS
  68. Service Brake Fluid Switch
  69. Transmition shifting ?'s
  70. Engine cutout 93STS north*
  71. Oil Life Message Problem
  72. Can I get some pictures (N* mounting)?
  73. OBD codes
  74. 95-sts wont start
  75. idle sts-95
  76. Anyone know where I can find cheap o2 sensors?!
  77. So....someone wanna rent me a timesert kit?
  78. Ignition module failure?
  79. Need help understanding a code
  80. Best oil for Northstar engines?
  81. Northstar questions: engine and tranny mounts
  82. Service Engine Light
  83. Idle speed
  84. Intermitant DTC P1416, where do I start looking?
  85. phenolic spacers cleaning
  86. Regular Unleaded
  87. Throttle Body
  88. 97 Concours....SOLD!
  89. Help Codes
  90. Thermostat
  91. 4.0/4.6 Combustion Chambers
  92. Intake air sensor / resistor mod
  93. valve job? something burning......
  94. Easy method of telling you need a coolant change!!!!!
  95. 97 dedan deville speedometer display out...
  96. 4.6L engine knock at idle
  97. High Performance driving
  98. Starting Issue
  99. High octane
  100. 4.6L engine knock at idle
  101. Headgaskets
  102. hard starting, won't pass smog symptoms
  103. Info on converter lock,,code PO39
  104. Northstar engine numbers
  105. Locking converter/check engine SOON
  106. How to replace front motor MOUNT
  107. can any one help
  108. Motor Rocks
  109. Torque converter lockup?
  110. Help!
  111. Regular Gas
  112. Nitrous Kit for Northstars - It exists
  113. why do people tell me northstars are junk?
  114. Coolant Loss
  115. VERY slight valve knock on '98 STS Northstar?
  116. Won't shift out of 1st gear
  117. Let's get some performance parts!
  118. Just how fragile are they?
  119. experienced mechanic in Los Angeles
  120. RWD 5-speeds
  121. Let's get an OBD Programmer...
  122. Limiters on 96 STS
  123. 1996 northstar in 95 eldorado - Strange things happening!
  124. Technical Photo Section?
  125. service engine light is on
  126. engine compatibility
  127. code help please
  128. 99' STS low-end torque is sluggish?
  129. Blessed With Head Gasket Leakage as Well...
  130. timesert kit
  131. performance pcm/ecu mods ODB II (96+ ) (i.e. 1999 sts)
  132. Can the 300 HP be swapped with 275 HP motor?
  133. North star motor swap
  134. Diagnostic codes and running rough
  135. cam timing tool
  136. Hard Shifting Transmision
  137. Squeek, scrape, whir.
  138. transmission removal in 94 eldorado???
  139. 2001 seville sparkplug location
  140. need advice-- cooling
  141. engine removal and install procedures
  142. Temperature problem???
  143. Starter replacement, what is the easiest way?
  144. Bearings?
  145. are northstars interferene engines?
  146. northstar head warpage?
  147. "LOW ENGINE COOLANT" came on...
  148. timeserts
  149. Northstar idle speed motor instsall
  150. Rss (c)1743, 1783, 1785 ??
  151. 4T80E drain plug location?
  152. Missfire 93 sts
  153. Idle is higher than normal and fluctuates
  154. STS 13:63, you ask how?
  155. Ok I can check my codes but how do you check them individually?
  156. Cadillac Hot Rodders!
  157. Keyless Entry Programming Procedure
  158. How to change Trans. Fluid?
  159. Borla exhaust needs your help
  160. Where's the Chip?
  161. Battery No Charge light on/ Alternator?
  162. New Owner Can I work on My Seville N* myself? Is it too electronic?
  163. northstars
  164. I am New here
  165. spark plug wires
  166. Sudden Stall
  167. What would you do? (fun project)
  168. Problems that were fixed (technical question)
  169. Waterpump Replacement
  170. I broke it!!
  171. 1999 Caddy Seville Sts
  172. High Mileage Northstar Thread: Who can beat me?
  173. 120,000 Miles on a Northstar?
  174. Rusted Fuel Filter
  175. Need some technical help/ suggestions from guys that know!!
  176. turbo for a northstar?
  177. Difference in 275HP & 300HP Engines
  178. Heads
  179. What size rims ....... (technical info)
  180. 95 SLS how to check coolant levels?
  181. Looking for Time sert kit
  182. Mobil 1 Synthetic Oil
  183. Screen in the intake system
  184. 100,000+ questions
  185. PVC Valve and Fuel Filter
  186. how to seperate the trans form the motor etc
  187. Ways to tell if your northstar motor is blown........look
  188. General Deville Maintenance
  189. New street rodder issue has N* Part 2!
  190. Need supporting info RE: 4.6 head bolts
  191. Northstar motor blown at 80,000 help...........
  192. Throttel Body Plate Size ???
  193. Caddy transplant
  194. 00 - 03 Seville questions:
  195. Northstar oil burning - what to do?
  196. That Coolant thing...
  197. B1136
  198. Allante losing coolant via bypass
  199. 2000 Dts - Rough Idle
  200. Resetting Change Oil Message
  201. finally made a few mods to the STS
  202. Knock sensor blues!!!
  203. Emission Message
  204. New Struts? When to replace them.
  205. Oil
  206. STSi heads availability
  207. seeping head gasket
  208. Premium Fuel
  209. just wanted to say hi to everyone!!!!!
  210. NOS on northstar??
  211. engine squeeking
  212. Engine Problems?
  213. Engine/Coolant Temp?
  214. How much to rebuild a northstar?
  215. Is there a SLS/STS performance chip/programer yet?
  216. how to turn off tractin
  217. "Check Oil Level"
  218. coolant color
  219. Firing order-
  220. engine miss
  221. North* with a manual?????
  222. Gasoline question
  223. sls tranny problem
  224. Hot Rod Caddy or LS1?
  225. upper motor mount part numbers?
  226. Cooling system sealants....
  227. A word about air filters
  228. Some Interesting facts...
  229. Transmission valve box?
  230. SES light
  231. Northstar STS story
  232. Clearing codes
  233. Oil in Coolant
  234. Is it just me, or did they use a shoehorn to get the N'Star under the hood of my STS?
  235. 2K 4.6 NS- No worries or no probs mentioned YET??
  236. Intermittent Hesitation
  237. Hey guys..quick question!
  238. How Strong is the Northstar Bottom End?
  239. tranny slipage on 97 deville
  240. Northstar 4.0L seems a little hot. Removed Thermostat. Bad Idea?
  241. Operating Temp??????
  242. Maintain Cooling system?
  243. Northstar Pull Question
  244. cracked spark plug
  245. 98+ Seville Free cold air intake mod
  246. Clearing Codes
  247. Check Coolent Level Keeps showing up
  248. blown headgasket
  249. 1994 Concours Transmission Question
  250. burned exhaust valve's ?!?!