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View Full Version : Northstar Performance and Technical Discussion

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