: Northstar Engines and System Technical Discussion



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  1. Another Successful Mod (albeit potentially destructive)
  2. Questions On Rebuilding a Northstar Engine
  3. eldorado1 (and others)...my brain is failing me...help!
  4. Kent-moore Inserts, Anyone Every Use Them?
  5. 1996 Eldorado Won't Start
  6. 93 STS Northstar wont start
  7. radiator hose sucking itself in after car cools off
  8. upper trans oil cooler hose leaking
  9. What to do with these? (headgasket help)
  10. Not Again
  11. How Much Coolant?!?!
  12. 99 STS Northstar and Trans axle Problem
  13. No access to PCM info via dashboard OBD?
  14. smoking engine after install
  15. Frenchy ask help for his cadillac sts
  16. Headgaskets And "time-serts"!?
  17. Rough runner when it rains. 93 n'star
  18. ~Cadillac Deville Concours 59,000 A DISASTER??~
  19. 93 Allante w/Northstar Tranny Issues
  20. What other engines fit a 1999 Cadillac sts?
  21. Best years for N* between 93 and 99
  22. Any possible options to fix this engine noise?
  23. P0171 to lean code?
  24. 98 Deville theft sytem problem??
  25. Leave no bolt behind - Transmission Case
  26. 2002 Deville HG Replacement
  27. 00 N* still rough idle after changing plenum, cleaning TB
  28. I broke a water pump pulley
  29. Catalytic Convertor Clogged
  30. OH no...another one!
  31. getting ready to start this hd job
  32. Looking for a 2000-2005 Deville/DHS
  33. Anyone Swapped a 4.4 SC Engine?
  34. power steering pressure hose
  35. Thinking of coming over to the N* camp....
  36. Main Bearing Cap Torque
  37. remote start diy <help please>
  38. Symptoms of broken motor mount (2000 STS) ??
  39. N* cams
  40. Check Gas Cap Code
  41. N* dress ups
  42. Fuel Cutoff For Z-rated Sts
  43. Possible Fuel issue?
  44. 2001 Deville thermostat
  45. Help!!!what Parts Do I Need For N*headgasket Replacements?
  46. Another overheater...
  47. Is it ok..........
  48. Engine oil level sensor leaking
  49. How to install Nitrous the correct way! I need input
  50. Are There any Hot Rodder's here?
  51. Lifter, Cam, Valve Issue? (Sounds like Chubby Ranger)
  52. going to attempt head gaskets
  53. 1993 Northstar Rough Idle
  54. check this out if you have had cooling system trouble ie headgaskets
  55. PCM 0101 code set on WOT
  56. 96 Cad DeVille Questions
  57. Need help on 98 cad seville sls
  58. cometic, felpro or gm oem! Head gasket survey.
  59. Thank You so much
  60. Help
  61. Look at these plugs
  62. Fi A/f Ratio
  63. N* Headgasket Replacement
  64. northstar eldorado swap
  65. new HG, coolant issues
  66. replaced hg, low oil pressure
  67. What else should I clean when replacing intake plenum?
  68. 94 STS N* Top End Oil leak
  69. 94 STS High HC at Idle
  70. Is this a cracked intake plenum? (see attached pics)
  71. spare parts after rebuild **HELP**
  72. New Bar's Leaks Product
  73. Newest Intake work...
  74. Headgaskets!
  75. Fuel pressure or pump problem? Need Help!
  76. northstar engine
  77. 2001 Seville dies out????
  78. My Head gasket job
  79. 2000 SLS uses 1qt oil every 500mi - Should I be worried???
  80. air filter
  81. Please help 1995 STS "Service Engine Soon" jumping out of gear?
  82. Northstar Rant
  83. A/C blowing warm air
  84. Sorry for the rant but early NS owners need to know
  85. sealant- case 1/2's
  86. 2000 N* Rough Idle in Seville STS
  87. 01 STS running rich
  88. Is car driveable with Blown HG?
  89. heating and a/c system please help
  90. clogged radiator?????
  91. Headgasket, or what?
  92. no spark
  93. how to replace motor mount on 97 deville northstar
  94. Which Northstar do I have?
  95. 94jN* What do I use for a sealant when I put the intake manifold back on?
  96. no spark
  97. Professionally Painted Northstar Engine Covers
  98. Reuse main bearings?
  99. Noise coming from LH head - valve?
  100. 94 N* Help white smoke out of exhaust
  101. Overheating mystery
  102. New Coolant
  103. PLEASE HELP!!! Stalling when warm and smoking alternator
  104. Car lunges forward when tapping gas
  105. 93, 94 or 95 Eldo worth buying?
  106. Does 2006 Dts Engines Have Headgasket Problems Also?
  107. misc questions
  108. northstar gone bad....AHHHHH
  109. camshaft sensor
  110. Replacing Cylinder Heads Project
  111. newest member of the headgasket club
  112. 1999 northstar warped heads
  113. Northstar engine swap
  114. p0340 camshaft position sensor
  115. northstar in a monte carlo
  116. could this be anything else?
  117. for under 8k would anybody buy a NS Caddy?
  118. No spark,Please help !!
  119. N* Water Pump...I think
  120. 4.6L Northstar CMP tests and replacement ?
  121. 4t80-e
  122. Random Misfire P0300 code
  123. Head Gasket Failure Signs
  124. Which Head Gasket to use?
  125. Swap LD8 in for a L37
  126. Demise of the Northstar
  127. head gasket
  128. GM service manual dvd
  129. The Ultimate FWD Cadillac Northstar Build
  130. No pulses on the injector wires?
  131. Need a connecting rod nut
  132. are coils interchangible from front to rear?
  133. 99" Sts, Rough Idle When Cold. Help!!!
  134. Overheating after new headgasket
  135. Engine running at higher then normal RPM`s
  136. Replacing starter-port intake?
  137. is this normal?
  138. How soon do you replace oil pan gasket?
  139. Torque Multiplier Upgrade ??????? hmmm
  140. mpg and oil consumption 00 dts
  141. 2000 N* Cracked Block & Questions
  142. Tranny Bolts
  143. ICM location anyone- need help!
  144. P0107 then P0201 thru P0208 runs fine
  145. 586Hp Northstar, in a grand prix
  146. Looking for head gasket repair in Northwest, Indiana
  147. Brands Of Oil ?
  148. is it the head or intake manifold gasket?
  149. drive by wire nitrous kit ???
  150. 98 STS Engine Removal
  151. About Gas
  152. Shocks
  153. do you need premium gas in a 4.6 nothstar
  154. New Mods on Customers cars
  155. The smell of coolant~
  156. Setting Camshaft timing HELP!!!
  157. Northstar Over Heating After Waterpump Replacement
  158. how to clean out intake??
  159. emissions light comes on
  160. random miss at idle
  161. spark plugs and wires
  162. Idle
  163. Looking for some more power!
  164. What coolant do i use
  165. 97 Seville Overheat Try This One
  166. northstar smoking engine
  167. Performance Programing 01 DTS
  168. misfire
  169. 2006 Dts Rough Idle On Morning Start Up?
  170. What Causes Heagaskets To Blow?
  171. Blown Engine
  172. Air ram cones
  173. northstar engine knock help!
  174. Help identify foreign object jamming intake valve open
  175. 01 Dts Rough Idle
  176. dangrieco
  177. Spark plugs ?
  178. changing the governor
  179. Delaney Power Extractor Engine
  180. 94 cadillac sts ECM install
  181. Anyone here in Michigan
  182. Where to find new camshafts?
  183. Please don't flame the noob...codes and problem
  184. Real octane booster?
  185. Motor for 96 STS????
  186. What do you think of this? ECU Modifier
  187. Root Cause of Head gasket Failure and a Fix?
  188. Wont start when its cold
  189. Cadillac sts '94 problem
  190. 1995 STS sudden problem
  191. Oil burning TSB.. I know this has been talked about before
  192. Oil Under The Beauty Cover
  193. 97 STS Starting after dead battery
  194. Can you run your car with water?
  195. New to the site, wondering about repairs
  196. Recommndations for N* Tech in Boston/RI Area?
  197. Oil pressure light
  198. Plz Listen 2 My story Need Help ASAP
  199. Timing and Octane....I searched.
  200. Head Gasket replacement 97STS
  201. is it worth it?.
  202. Head Gaskets Failure 97 STS
  203. White smoke in the exhaust which clears after idling 5 minutes
  204. 2002 DTS trouble
  205. Heater Fan
  206. northstar poor mileage
  207. 2001 STS engine knock
  208. N* Camshaft Removal: Special Tools Required?
  209. Block Sealer??
  210. After Market Code Scanner
  211. 2005 STS 3.6L Engine Oil Sensors
  212. Ok Someone Please Help My 97 Deville Not Running.............
  213. best Seville STS to buy ???
  214. Strange Call
  215. Transmission Force Motor 1994 Eodorado - Can it be done without pulling the trans?
  216. No 24x Refrence Signal
  217. OBD II Manual
  218. 2002 sts engine codes
  219. Noise on Startup when Cold
  220. question about trans gasket
  221. 98 Eldo Rebuilt Motor
  222. Pulling camshaft cover - can it be done w/out dropping engine?
  223. Thermostat
  224. 97 Deville w/ N* Battery(?) problems
  225. head gasket blown replacing motor
  226. AGAP Northstar reman engine NIGHTMARE
  227. Oil leak 2000 Deville
  228. 96 Eldorado ABS and Traction Control TRBL
  229. intermittent Bubbling noise in dashboard.. Any ideas?
  230. gasket questions on the northstar
  231. engine swap
  232. LD8 Engine issue (2005 Bonneville GXP)
  233. Custom made 8.5mm MSD spark plug wires
  234. oilpan/trans pan gasket...
  235. water pump tension pulley
  236. possible 1/2 case oil leak.....
  237. Northstar Oil Pan Help Needed
  238. Removing the N* from an el do?
  239. Problems with 02 DHS, need more opinions
  240. Can you name this Car?
  241. Two 4.6 Northstar Motors What are they Worth?
  242. How hot can you go?
  243. Throttle Position Sensor 94 N* - how to replace?
  244. Questions about low-mile oft-stored '02 Eldorado
  245. P0741 & P1860
  246. 96 deville egr valve cleaning
  247. Hey, all you guys, check radiator hoses
  248. Anyone who can read motor serials get in here (calling AJ)
  249. Pinging above 3000RPM with 93 octane
  250. Northstar mechanic