: Northstar Engines and System Technical Discussion



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  1. P030 Code on '93 STS
  2. "no battery charge"
  3. "check oil level"
  4. '95 STS showing SES code: P085
  5. Which o2 sensor??
  6. Code PO24-VSS Signal To TCC-Where is It Located At?
  7. TPS - Problems
  8. thermal meltdown of n* engine ?
  9. Are Gremlins pinching my fuel line? ARGHHH!!
  10. 2002 engine into 97 Deville?
  11. Tune up?
  12. Freeze plugs ( So called )
  13. 94 Concourse Shifting Problem
  14. I smell gas in my 95 concours
  15. message
  16. update on my 97 concours
  17. NA power out of a North*?
  18. 2002 what does loss of dim communication?
  19. Turbos put back?
  20. Leaking Heater Core in 1999 DeVelle
  21. Overheating: Am I screwed?
  22. Bolting filter right on the motor
  23. 94 Eldorado Oil level sensor problem
  24. o2 sensors!!!!!! argggggggg
  25. Help Codes Driving Me Insane
  26. Funny Smell
  27. 94 Seville STS History Codes???
  28. Emissions Code on 1996 STS
  29. Real unhappy with (my new) used caddy - Can't ID the DTC's
  30. Opinions on possible purchase 91 Deville
  31. Signs you need a tuneup?
  32. R/r water pump
  33. Help Me!
  34. Hard Starting STS
  35. OBD2 Reprogramming
  36. Chip or no chip?
  37. Northstar R&R Book Times
  38. Northstars & oil consumption...are there "good" & "bad" motors?
  39. 275hp to 300hp head swap question
  40. Northstar Aftermarket Support
  41. Do Northstars burn oil fast???
  42. Help!!
  43. Northstar overheating
  44. Most common problems with NS motor
  45. Engine size ?????
  46. What is the deal with the Crank Position Sensor and...
  47. sneaky coolant leak, Northstar
  48. Bad plug wires get you crazy codes
  49. stupid dipstick
  50. N* Head Gasket repair part I/ Remove engine
  51. idle speed adjust?
  52. Belt Question
  53. Emissions System
  54. 99 SLS probelms
  55. help with codes?
  56. Head Work
  57. New person here - piston replacement question
  58. How to get to plugs on 00 STS?
  59. 1995 SLS Engine and Trans
  60. tps 1995 sts adjusted
  61. are the '93 and '95 northstar computers the same?
  62. Cracked Water Pump Housing Northstar
  63. Erratic fuel level gauge & a few other ???
  64. Time serts head gaskets and cadillac refunds
  65. 1990 Sedan Deville Valve Job
  66. Limited slip...sort of
  67. Octane reading
  68. Check Oilk Level wont stop
  69. Please help..engine coolant ?....
  70. Traction Control on STS ???
  71. 96 Seville, Check Engine Light, New owner?
  72. Help with cooling system
  73. ? on seville northstar motor?
  74. Help! I have a 1997 Concours(traction c) I would love to know where this wire goes??
  75. maintenence records?
  76. rear windows fog up
  77. Northstar - Golf swap
  78. PCM codes
  79. 1997 Deville problems
  80. Smelling Coolant inside - 93 STS
  81. Battery Replacement on 95 STS
  82. Service Brake Fluid Switch
  83. Transmition shifting ?'s
  84. Engine cutout 93STS north*
  85. Oil Life Message Problem
  86. Can I get some pictures (N* mounting)?
  87. OBD codes
  88. 95-sts wont start
  89. idle sts-95
  90. Anyone know where I can find cheap o2 sensors?!
  91. So....someone wanna rent me a timesert kit?
  92. Ignition module failure?
  93. Need help understanding a code
  94. Best oil for Northstar engines?
  95. Northstar questions: engine and tranny mounts
  96. Service Engine Light
  97. Idle speed
  98. Intermitant DTC P1416, where do I start looking?
  99. phenolic spacers cleaning
  100. Regular Unleaded
  101. Throttle Body
  102. 97 Concours....SOLD!
  103. Help Codes
  104. Thermostat
  105. 4.0/4.6 Combustion Chambers
  106. Intake air sensor / resistor mod
  107. valve job? something burning......
  108. Easy method of telling you need a coolant change!!!!!
  109. 97 dedan deville speedometer display out...
  110. 4.6L engine knock at idle
  111. High Performance driving
  112. Starting Issue
  113. High octane
  114. 4.6L engine knock at idle
  115. Headgaskets
  116. hard starting, won't pass smog symptoms
  117. Info on converter lock,,code PO39
  118. Northstar engine numbers
  119. Locking converter/check engine SOON
  120. How to replace front motor MOUNT
  121. can any one help
  122. Motor Rocks
  123. Torque converter lockup?
  124. Help!
  125. Regular Gas
  126. Nitrous Kit for Northstars - It exists
  127. why do people tell me northstars are junk?
  128. Coolant Loss
  129. VERY slight valve knock on '98 STS Northstar?
  130. Won't shift out of 1st gear
  131. Let's get some performance parts!
  132. Just how fragile are they?
  133. experienced mechanic in Los Angeles
  134. RWD 5-speeds
  135. Let's get an OBD Programmer...
  136. Limiters on 96 STS
  137. 1996 northstar in 95 eldorado - Strange things happening!
  138. Technical Photo Section?
  139. service engine light is on
  140. engine compatibility
  141. code help please
  142. 99' STS low-end torque is sluggish?
  143. Blessed With Head Gasket Leakage as Well...
  144. timesert kit
  145. performance pcm/ecu mods ODB II (96+ ) (i.e. 1999 sts)
  146. Can the 300 HP be swapped with 275 HP motor?
  147. North star motor swap
  148. Diagnostic codes and running rough
  149. cam timing tool
  150. Hard Shifting Transmision
  151. Squeek, scrape, whir.
  152. transmission removal in 94 eldorado???
  153. 2001 seville sparkplug location
  154. need advice-- cooling
  155. engine removal and install procedures
  156. Temperature problem???
  157. Starter replacement, what is the easiest way?
  158. Bearings?
  159. are northstars interferene engines?
  160. northstar head warpage?
  161. "LOW ENGINE COOLANT" came on...
  162. timeserts
  163. Northstar idle speed motor instsall
  164. Rss (c)1743, 1783, 1785 ??
  165. 4T80E drain plug location?
  166. Missfire 93 sts
  167. Idle is higher than normal and fluctuates
  168. STS 13:63, you ask how?
  169. Ok I can check my codes but how do you check them individually?
  170. Cadillac Hot Rodders!
  171. Keyless Entry Programming Procedure
  172. How to change Trans. Fluid?
  173. Borla exhaust needs your help
  174. Where's the Chip?
  175. Battery No Charge light on/ Alternator?
  176. New Owner Can I work on My Seville N* myself? Is it too electronic?
  177. northstars
  178. I am New here
  179. spark plug wires
  180. Sudden Stall
  181. What would you do? (fun project)
  182. Problems that were fixed (technical question)
  183. Waterpump Replacement
  184. I broke it!!
  185. 1999 Caddy Seville Sts
  186. High Mileage Northstar Thread: Who can beat me?
  187. 120,000 Miles on a Northstar?
  188. Rusted Fuel Filter
  189. Need some technical help/ suggestions from guys that know!!
  190. turbo for a northstar?
  191. Difference in 275HP & 300HP Engines
  192. Heads
  193. What size rims ....... (technical info)
  194. 95 SLS how to check coolant levels?
  195. Looking for Time sert kit
  196. Mobil 1 Synthetic Oil
  197. Screen in the intake system
  198. 100,000+ questions
  199. PVC Valve and Fuel Filter
  200. how to seperate the trans form the motor etc
  201. Ways to tell if your northstar motor is blown........look
  202. General Deville Maintenance
  203. New street rodder issue has N* Part 2!
  204. Need supporting info RE: 4.6 head bolts
  205. Northstar motor blown at 80,000 help...........
  206. Throttel Body Plate Size ???
  207. Caddy transplant
  208. 00 - 03 Seville questions:
  209. Northstar oil burning - what to do?
  210. That Coolant thing...
  211. B1136
  212. Allante losing coolant via bypass
  213. 2000 Dts - Rough Idle
  214. Resetting Change Oil Message
  215. finally made a few mods to the STS
  216. Knock sensor blues!!!
  217. Emission Message
  218. New Struts? When to replace them.
  219. Oil
  220. STSi heads availability
  221. seeping head gasket
  222. Premium Fuel
  223. just wanted to say hi to everyone!!!!!
  224. NOS on northstar??
  225. engine squeeking
  226. Engine Problems?
  227. Engine/Coolant Temp?
  228. How much to rebuild a northstar?
  229. Is there a SLS/STS performance chip/programer yet?
  230. how to turn off tractin
  231. "Check Oil Level"
  232. coolant color
  233. Firing order-
  234. engine miss
  235. North* with a manual?????
  236. Gasoline question
  237. sls tranny problem
  238. Hot Rod Caddy or LS1?
  239. upper motor mount part numbers?
  240. Cooling system sealants....
  241. A word about air filters
  242. Some Interesting facts...
  243. Transmission valve box?
  244. SES light
  245. Northstar STS story
  246. Clearing codes
  247. Oil in Coolant
  248. Is it just me, or did they use a shoehorn to get the N'Star under the hood of my STS?
  249. 2K 4.6 NS- No worries or no probs mentioned YET??
  250. Intermittent Hesitation