: Northstar Engines and System Technical Discussion



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  1. Not happy with Federal Mogul's quality levels anymore. Specifically Fel-Pro.
  2. 1994 SLS Northstar running rich and stalling
  3. Front seal is leaking
  4. Thorttle body problem and code p2135
  5. Ignition drop-outs
  6. L37, ld8, l47 & lx5
  7. My 98 Deville with straight pipes... what do you guys think?
  8. hg repairs
  9. Wierd Temperature spikes 02 deville
  10. There was a thread or sticky that was all about engine oild and dino or conventional
  11. Oil pump prime
  12. Motor Mount project
  13. Hello Everyone, I need help with getting an engine......
  14. P0304 Misfire cylinder 4
  15. N* picky about motor oil?
  16. Timing chain seems loose on a 4.6L Deville.
  17. 99 deville fans just stop both of them
  18. Replacing a TPS in a 99 Deville?
  19. 2000 Deville Idle Relearn
  20. Polishing Cam lobes?
  21. Northstar Tuneup
  22. Felpro intake manifold gaskets
  23. PCM Codes P0171 and P0174
  24. 100 Cadillac head gasket repairs completed
  25. NorthStar Engine Block Crack Have you had one What year and how did it crack
  26. 4.6 N* Crank shaft / oil pump question
  27. hard starting 1997 sts
  28. air in coolant system?
  29. more electrical gremlins
  30. No fuel pressure
  31. Photos of the CNC turning center-
  32. 98 STS White smoke on accelation
  33. Should I have my brand new, never fired 4.0 long-block studded?
  34. Found my coolant leak
  35. Oil pump seal/oring
  36. Looking for a SPECIFIC N* Removal Guide
  37. Remote start and push button ignition
  38. Consequences of driving with failed HG
  39. How to space piston rings
  40. Cam journal caps broke
  41. Should I replace PCM? Need 2nd & 3rd opinions
  42. New owner of 1997 Eldorado, many questions
  43. N* To pull or not to pull, A/C is the question.
  44. 2002 Deville; Installing Vin Y Engine Into Vin 9 Car
  45. Northstar PCM Tuning
  46. Cross over gaskets ?
  47. Smells like exhaust in antifreeze again............... ?
  48. Disabling air injection system in 2002 engine?
  49. Couple of problems with my 94 Seville.
  50. 1994 cadillac seville Spark plug change
  51. Bad head gaskets or user error?
  52. northstar pre-trip opinion
  53. Source for engine internal parts?
  54. First post: Anyone know if the RWD and AWD wire harnesses are the same for 04-05 STS?
  55. If Engine has been Studed can you Remove the heads and put the heads back with in car
  56. So where is my oil level sensor?
  57. Curious. . .crankshaft position sensors, are they reversable?
  58. Bad mileage
  59. Taking Pre-Orders for bottom end stud kits-
  60. Any good Northstar shops near Maryland?
  61. Have code P071 & P046
  62. Cost of DIY Headgaskets/studs?
  63. Ceramic coated exhaust manifolds?
  64. What is the timeline for Head Gasket failure
  65. Where are the parts for this build?
  66. MAF Housing R&R
  67. ticking tapping noise in engine video attached
  68. Interesting find........
  69. proper torque-to-yield on 99 sts
  70. Northstar 4.6 bottom end
  71. 1996 ETC Code nightmares p13
  72. 2000 STS Half-case seal gasket P/N
  73. Looks like an early factory "new" create engine
  74. Northstar Shake
  75. 5/16 course Head Bolts?
  76. Time sert removal
  77. tcc solenoid
  78. Just got exhaust work done and now I'm getting some codes... Advice? 2002 DTS
  79. Question regarding slight motor mount/tranny thump
  80. 85 Northstar head gasket jobs completed 85 Cadillacs saved!
  81. Looking for a shop in GA that uses Studs for HG repair
  82. Help with Tune Up Northstar 4.6
  83. Disassembling my first N*
  84. bad ground the route of all evil ??
  85. Mysterious loss of coolant / 7000 miles without a problem since new studs & gaskets..
  86. Engine swap question
  87. New Guy to Northstar and their General Maintaince
  88. Torque Converter Shaft
  89. Painting engine cover and valve cover/s
  90. 1996 Cadillac Seville SLS - Replacing water pump belt HELP!
  91. Still getting Missfire-New AC Delco Plugs and new coil packs
  92. Removing exhaust down pipe on 99 Seville
  93. 94 Cadillac Seville SLS flooding out real bad
  94. New Member engine overheating problem...
  95. Oil Pressure...
  96. Pretty sure I have a fuel leak somewhere under the hood
  97. Engine Coolant Temperature Gauges / Cooling Fans Operation Explained
  98. Oil, cams, Northstars, and ZDDP
  99. New member, 1st caddy- low coolant level warning
  100. 2000 SLS engine oddity
  101. 4.0 rebuild
  102. Northstar swap transmission please help
  103. Best method of cleaning
  104. Crank Bolt Removal and free block/tranny
  105. Time Sert Kit Needed.
  106. I’m not Convinced it the Head Gaskets again?
  107. Code question?
  108. Out the top! First time....
  109. cam swap to 4.0l
  110. Timesert Failure
  111. Looking for a GOOD shop in/near MASS for engine install.
  112. HG For Me Too!
  113. Northstar A/C
  114. ECU TROUBLE! IMPORTANT! How to fix or replace cut wires to ecu?
  115. Northstar in a 65 Corsa
  116. crank position sensor relearn
  117. I really need help OBD TROUBLE CODES 96 STS
  118. 2007 DTS Engine noise at start up help
  119. 02 Northstar in 99 sys basically complete
  120. Other Northstar Vehicles (LD8)
  121. Noticeable drop in power in warm weather
  122. norms insert alignment kit for sale
  123. 99 STS stumbles, P1370a, P1371a, P1377a codes; At wits end with this car
  124. 2000 cadillac sts completely stumped, tried everything and new to fourm.
  125. 2006 DTS Intermittent Leakage Causing Battery to go Dead Overnight
  126. new guy with 99 eldorado etc
  127. Anyone need a Stud Kit?
  128. Question about stud kit install?
  129. Timing question
  130. 94 eldo cooling problem
  131. Rear main (probable) seal leaking... talk to "Northstar performance" or no?
  132. Convert from Dex-Cool to green antifreeze
  133. Cracked Blocks. CKP swap to 00+ blocks?
  134. '96 STS starting trouble & heat only on right side
  135. how to replace a1994 sls map sensor, code p032
  136. Can anyone comment on the differences in '06 to '10 Vin Y (LD8) engines from '05
  137. 2002 Northstar security
  138. EMERGENCY! I have an interview tomorrow and my Car (2000 Eldo) is down!
  139. 2002 4t80e tranny
  140. Internal Engine Questions!
  141. Trouble communicating with Northstar Performance.
  142. It's been asked before, but more specifically.ACD 41-OEM Sparkplugs vs Denso Iridium
  143. Who has done the Most head gasket jobs on N's
  144. New supplier for a high performance exhaust crossover pipe
  145. Who has used studs from Northstar Performance ?
  146. Northstar XV12 engine
  147. Message to all stud kit customers, past, present, and future.
  148. Lower crankcase reseal questions
  149. Best Reasonably Priced Socket Tools?
  150. 2000 Eldo front cam cover gasket replacement
  151. P1599 - Engine Stall or Near Stall Detected
  152. No longer a Cadillac owner :-(
  153. PVC valve,where are you?
  154. Replaced head gaskets and northstar performance studs with egine in car
  155. Problem solved!
  156. Greetings all, Newby here. Got a '94 Eldo Northstar w/ zero problems and...
  157. new spark plugs and radio static
  158. Northstar removal guide - feedback wanted
  159. Crankcase half leak?
  160. 05 Northstar Timing Chain Failure?
  161. another shop pulling a scam?
  162. MAF SENSOR ISSUE 2000 Cadillac Seville SLS
  163. spark plugs
  164. Is it just me or does it seem like there are a lot more bad head gaskets, esp 2000+
  165. ignition switch keeps blowing on 02 deville
  166. idle vibration and no other codes/symptoms
  167. fuel pump info please
  168. 95 seville smokes tons at idle after sitting for a year
  169. Tapping Noise
  170. Coolant temp sensor
  171. 2002 Deville Mechanics are stumped
  172. white/blue smoke
  173. Fel-Pro or OEM gaskets?
  174. change to synthetic to help oil consumption?
  175. Steel of a deal?
  176. 94 top intake cover bolts- which side up
  177. 2002 Deville completely died at 80 mph
  178. pulsating engine and trans kickdown too high
  179. P0101 and P0741 -2000 Deville
  180. Cam shaft code 99 deville ongoing project with hg repair
  181. Blown Head Gasket 00 Deville
  182. God Bless America - stud kits to ship from new USA location
  183. Any differences between N* in 98 Deville and 98 Seville?
  184. 98 Deville HG failure
  185. Minimum idle speed adjustment on 1996 throttle body
  186. My NorthStar Head Stud installation picture
  187. bad idle and shuts off
  188. Question on Northstar small cover bolts, what size wrench?
  189. 2002 Cadillac DeVille and engine skip
  190. dropping Northstar
  191. Scan Tools For The DIY
  192. engine form 97 into 99?
  193. 94 4.6 Water Pump Housing question
  194. Northstar Performance - 24 hour head gasket repair & bottom end re-seal
  195. 1998 Deville, Both Cooling Fans fail to turn on when commanded with TECH II
  196. 1998 Deville Waterpump housing cover gasket is it reall a dealer only item
  197. Radiator Flush 02 deville
  198. Cannot remove spark plugs
  199. Crankshaft Sensors
  200. Crankshaft sensor?
  201. Fixed - Map sensors keep failing on 94 NorthStar
  202. Which motor mount is this?
  203. Stalls when stopping/stopped
  204. Help!!
  205. ♠ The never had a headgasket problem club…
  206. Cam Cover Colors
  207. P0410 and P0418 on 2005 Bonneville GXP
  208. Spark plug replacment
  209. 94 STS Acceleration issue
  210. EGR or IAC problem on -95 Eldo
  211. Northstar Headgasket Leak/Headbolts......Northstar Performance Bolts
  212. Sticky gas pedal
  213. Cannonball Run Sept 3/2011
  214. Would my baby make it?
  215. GM's response to ZDDP reduction in oil
  216. 1998 Cadillac STS overheating
  217. steel sleeve/block
  218. water pump cover gasket
  219. p0300
  220. New owner of a 98 Eldorado and need some advice
  221. Sub: The wikipedia of Cadillacs
  222. water pump cover leak
  223. headgasket thickness?!
  224. Garage sale
  225. Jake's studs make me happy in the pants.
  226. Any Previously tuned 2000 to 2003 PCM have lifetime tune upgrade
  227. 98 deville concour... correct spark plug gap
  228. Introduction and a little desperate for a fix
  229. 1998 Northstar throttle sticking.
  230. Coolant System Questions 1996 Cadillac Deville
  231. 98 seville sts white smoke
  232. Note to all stud kit customers, effective immediately pricing and policy changes.
  233. 2000 Deville Misfire
  234. Frequency of HG Failure by Age & Miles
  235. why is over filling bad ?
  236. Removing front valve covers from 99 STS engine in car.
  237. Catalytic Converter operating temp specs
  238. For those of you who've successfully rebuilt a northstar engine. . .
  239. cold carbon rap
  240. Note from grampa
  241. Jake i hope you are still here and have not left Thank you Jake for all you do
  242. when i get the heater core replaced to i stay Dex or go green
  243. Swapping PCM
  244. 99 STS running cold (yes cold!!)
  245. Denso Products
  246. '98 DeVille Northstar dies while coasting.
  247. 2000 seville SLS engine removal
  248. 94 Northstar Ecm options
  249. 381 Cadillac head gasket jobs completed
  250. 4.6 northstar injector information