: Northstar Engines and System Technical Discussion



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  1. P119 and p080
  2. Another (slightly different) Northstar oil consumption question.....
  3. holley injector harness
  4. Northstar oil pump failure
  5. 4.6 Rod Clearance
  6. Determining Headbolt Thread Pitch
  7. Thank You
  8. Scratched Wall
  9. 4T80E Electronically controlled torque converter clutch
  10. Do The 2006 and newer DTS Northstars have the same headgasket issues?
  11. Feels like a miss?
  12. Need some advice for Northstar car purchase...
  13. need help with rough running northstsar
  14. '03 DeVille - Slight shudder under initial acceleration
  15. how can i check if head gasket leaks
  16. 1994 Deville Concours Ignition Control Module Replacement
  17. Get it while you can..........
  18. Backfiring issues
  19. Rear main seal install tool confusion
  20. surges/sputters while driving, but idles perfectly fine?
  21. Code P041 and Code P025 in 1994 Deville Concours
  22. Northstar 4.6 Overheating
  23. Differences of studs vs. Timeserts
  24. 94 deville concours northstar catalytic converter redhot and stalls
  25. dipstick level, which side to believe?
  26. 2002 Eldorado coolant flush what kind?
  27. Heated Seat Issue..Please Help!
  28. Running on 4 Cylinders..not in Overheat mode
  29. 2002 Deville, White Smoke when Ideling
  30. 1999 Deville w/ Northstar coolant issue
  31. Another 2000+ head gasket failure
  32. 01 Deville DHS N* Repair in DFW Metroplex
  33. SureGrip stud kit / jig combo allignment?
  34. How hard to try to pull the head bolts on Northstar?
  35. How do I pull the airbox in my Eldo?
  36. 2000 Deville Crank Sensor Problems.. Please help if you can..
  37. ethanol or not
  38. Areas to look at while doing a HG repair
  39. PCM/EBTCM Pin Diagram, 2001 SLS
  40. Jake, wish you best of Luck !!
  41. What wire for the Speedo?
  42. Time sert kit kit # 500
  43. Torque Converter Whine
  44. PCM and engine switching
  45. 4T80E Viscous Torque Converter Internals / Clutch Failure (Lots of pictures included)
  46. timeserts
  47. Northstar removal
  48. Blocks, cracks and heat
  49. Please help: 1996 deville hard starting ?
  50. 2000 Deville using oil
  51. 2003 Deville engine start problem
  52. What exactly is a "base model" Deville ?
  53. need to replace flywheel
  54. Service engine light
  55. Possible to run northstar on an engine stand or outside of the car?
  56. Oil leak 2004 DHS could switching to Syn oil at 60k cause a leak or make one worse
  57. A few codes to clear up (02 Deville)
  58. Northstar Camshaft Wear - Common? Cause?
  59. My 98 Deville N* HG repair adventure !!
  60. northstar engine several issues--need major help
  61. Water pump removal
  62. Northstar coolant leak
  63. More Northstar repair services......ENJOY
  64. Shell Rimula R6 ME 5W30
  65. Camshaft pulley removal
  66. P0300 Code goes off at high rpm.
  67. Turbo'ed 98-04 STS N*
  68. 99' cadillac head gasket problems
  69. Fuel Injector resistance 1994 Northstar motor
  70. Northstar Main Studs-
  71. $575 99 Seville project Car overheating
  72. My Little Northstar engine Project
  73. Trans question p0748 after trans repaired by rebuilder
  74. 1994 Deville Concours PCM Replacement
  75. 94 Deville Concours PCM Codes P041 and P119
  76. Misfire Cylender 4 Low Compresion after flashing SES and p0300
  77. prospective owner with HG question
  78. tcc solenoid need help asap
  79. egr blockoff
  80. 01 eldorado ESC "hard" starting and once wouldn't start
  81. Shelby 1 Olds Supercharged Aurora - How About LS9 or LSA?
  82. Direct Injection - Technology Question
  83. Bought the '97 etc replacement
  84. Advice from some repair guys on cleaning processes
  85. 94 STS head gasket question
  86. Doesn't seem to be the head gasket but still overheats
  87. Looking for HG Repair Shop in Southeast US
  88. evap solonoid
  89. Ebay: Brand new Vortech Supercharged Aurora 4.0 engine
  90. 1995 elder northstar cooling
  91. how to change camshaft position sensor on 1997 sts
  92. Not happy with Federal Mogul's quality levels anymore. Specifically Fel-Pro.
  93. 1994 SLS Northstar running rich and stalling
  94. Front seal is leaking
  95. Thorttle body problem and code p2135
  96. Ignition drop-outs
  97. L37, ld8, l47 & lx5
  98. My 98 Deville with straight pipes... what do you guys think?
  99. hg repairs
  100. Wierd Temperature spikes 02 deville
  101. There was a thread or sticky that was all about engine oild and dino or conventional
  102. Oil pump prime
  103. Motor Mount project
  104. Hello Everyone, I need help with getting an engine......
  105. P0304 Misfire cylinder 4
  106. N* picky about motor oil?
  107. Timing chain seems loose on a 4.6L Deville.
  108. 99 deville fans just stop both of them
  109. Replacing a TPS in a 99 Deville?
  110. 2000 Deville Idle Relearn
  111. Polishing Cam lobes?
  112. Northstar Tuneup
  113. Felpro intake manifold gaskets
  114. PCM Codes P0171 and P0174
  115. 100 Cadillac head gasket repairs completed
  116. NorthStar Engine Block Crack Have you had one What year and how did it crack
  117. 4.6 N* Crank shaft / oil pump question
  118. hard starting 1997 sts
  119. air in coolant system?
  120. more electrical gremlins
  121. No fuel pressure
  122. Photos of the CNC turning center-
  123. 98 STS White smoke on accelation
  124. Should I have my brand new, never fired 4.0 long-block studded?
  125. Found my coolant leak
  126. Oil pump seal/oring
  127. Looking for a SPECIFIC N* Removal Guide
  128. Remote start and push button ignition
  129. Consequences of driving with failed HG
  130. How to space piston rings
  131. Cam journal caps broke
  132. Should I replace PCM? Need 2nd & 3rd opinions
  133. New owner of 1997 Eldorado, many questions
  134. N* To pull or not to pull, A/C is the question.
  135. 2002 Deville; Installing Vin Y Engine Into Vin 9 Car
  136. Northstar PCM Tuning
  137. Cross over gaskets ?
  138. Smells like exhaust in antifreeze again............... ?
  139. Disabling air injection system in 2002 engine?
  140. Couple of problems with my 94 Seville.
  141. 1994 cadillac seville Spark plug change
  142. Bad head gaskets or user error?
  143. northstar pre-trip opinion
  144. Source for engine internal parts?
  145. First post: Anyone know if the RWD and AWD wire harnesses are the same for 04-05 STS?
  146. If Engine has been Studed can you Remove the heads and put the heads back with in car
  147. So where is my oil level sensor?
  148. Curious. . .crankshaft position sensors, are they reversable?
  149. Bad mileage
  150. Taking Pre-Orders for bottom end stud kits-
  151. Any good Northstar shops near Maryland?
  152. Have code P071 & P046
  153. Cost of DIY Headgaskets/studs?
  154. Ceramic coated exhaust manifolds?
  155. What is the timeline for Head Gasket failure
  156. Where are the parts for this build?
  157. MAF Housing R&R
  158. ticking tapping noise in engine video attached
  159. Interesting find........
  160. proper torque-to-yield on 99 sts
  161. Northstar 4.6 bottom end
  162. 1996 ETC Code nightmares p13
  163. 2000 STS Half-case seal gasket P/N
  164. Looks like an early factory "new" create engine
  165. Northstar Shake
  166. 5/16 course Head Bolts?
  167. Time sert removal
  168. tcc solenoid
  169. Just got exhaust work done and now I'm getting some codes... Advice? 2002 DTS
  170. Question regarding slight motor mount/tranny thump
  171. 85 Northstar head gasket jobs completed 85 Cadillacs saved!
  172. Looking for a shop in GA that uses Studs for HG repair
  173. Help with Tune Up Northstar 4.6
  174. Disassembling my first N*
  175. bad ground the route of all evil ??
  176. Mysterious loss of coolant / 7000 miles without a problem since new studs & gaskets..
  177. Engine swap question
  178. New Guy to Northstar and their General Maintaince
  179. Torque Converter Shaft
  180. Painting engine cover and valve cover/s
  181. 1996 Cadillac Seville SLS - Replacing water pump belt HELP!
  182. Still getting Missfire-New AC Delco Plugs and new coil packs
  183. Removing exhaust down pipe on 99 Seville
  184. 94 Cadillac Seville SLS flooding out real bad
  185. New Member engine overheating problem...
  186. Oil Pressure...
  187. Pretty sure I have a fuel leak somewhere under the hood
  188. Engine Coolant Temperature Gauges / Cooling Fans Operation Explained
  189. Oil, cams, Northstars, and ZDDP
  190. New member, 1st caddy- low coolant level warning
  191. 2000 SLS engine oddity
  192. 4.0 rebuild
  193. Northstar swap transmission please help
  194. Best method of cleaning
  195. Crank Bolt Removal and free block/tranny
  196. Time Sert Kit Needed.
  197. Iím not Convinced it the Head Gaskets again?
  198. Code question?
  199. Out the top! First time....
  200. cam swap to 4.0l
  201. Timesert Failure
  202. Looking for a GOOD shop in/near MASS for engine install.
  203. HG For Me Too!
  204. Northstar A/C
  205. ECU TROUBLE! IMPORTANT! How to fix or replace cut wires to ecu?
  206. Northstar in a 65 Corsa
  207. crank position sensor relearn
  208. I really need help OBD TROUBLE CODES 96 STS
  209. 2007 DTS Engine noise at start up help
  210. 02 Northstar in 99 sys basically complete
  211. Other Northstar Vehicles (LD8)
  212. Noticeable drop in power in warm weather
  213. norms insert alignment kit for sale
  214. 99 STS stumbles, P1370a, P1371a, P1377a codes; At wits end with this car
  215. 2000 cadillac sts completely stumped, tried everything and new to fourm.
  216. 2006 DTS Intermittent Leakage Causing Battery to go Dead Overnight
  217. new guy with 99 eldorado etc
  218. Anyone need a Stud Kit?
  219. Question about stud kit install?
  220. Timing question
  221. 94 eldo cooling problem
  222. Rear main (probable) seal leaking... talk to "Northstar performance" or no?
  223. Convert from Dex-Cool to green antifreeze
  224. Cracked Blocks. CKP swap to 00+ blocks?
  225. '96 STS starting trouble & heat only on right side
  226. how to replace a1994 sls map sensor, code p032
  227. Can anyone comment on the differences in '06 to '10 Vin Y (LD8) engines from '05
  228. 2002 Northstar security
  229. EMERGENCY! I have an interview tomorrow and my Car (2000 Eldo) is down!
  230. 2002 4t80e tranny
  231. Internal Engine Questions!
  232. Trouble communicating with Northstar Performance.
  233. It's been asked before, but more specifically.ACD 41-OEM Sparkplugs vs Denso Iridium
  234. Who has done the Most head gasket jobs on N's
  235. New supplier for a high performance exhaust crossover pipe
  236. Who has used studs from Northstar Performance ?
  237. Northstar XV12 engine
  238. Message to all stud kit customers, past, present, and future.
  239. Lower crankcase reseal questions
  240. Best Reasonably Priced Socket Tools?
  241. 2000 Eldo front cam cover gasket replacement
  242. P1599 - Engine Stall or Near Stall Detected
  243. No longer a Cadillac owner :-(
  244. PVC valve,where are you?
  245. Replaced head gaskets and northstar performance studs with egine in car
  246. Problem solved!
  247. Greetings all, Newby here. Got a '94 Eldo Northstar w/ zero problems and...
  248. new spark plugs and radio static
  249. Northstar removal guide - feedback wanted
  250. Crankcase half leak?