: Northstar Engines and System Technical Discussion



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