: Northstar Engines and System Technical Discussion



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  1. P0304 Misfire cylinder 4
  2. N* picky about motor oil?
  3. Timing chain seems loose on a 4.6L Deville.
  4. 99 deville fans just stop both of them
  5. Replacing a TPS in a 99 Deville?
  6. 2000 Deville Idle Relearn
  7. Polishing Cam lobes?
  8. Northstar Tuneup
  9. Felpro intake manifold gaskets
  10. PCM Codes P0171 and P0174
  11. 100 Cadillac head gasket repairs completed
  12. NorthStar Engine Block Crack Have you had one What year and how did it crack
  13. 4.6 N* Crank shaft / oil pump question
  14. hard starting 1997 sts
  15. air in coolant system?
  16. more electrical gremlins
  17. No fuel pressure
  18. Photos of the CNC turning center-
  19. 98 STS White smoke on accelation
  20. Should I have my brand new, never fired 4.0 long-block studded?
  21. Found my coolant leak
  22. Oil pump seal/oring
  23. Looking for a SPECIFIC N* Removal Guide
  24. Remote start and push button ignition
  25. Consequences of driving with failed HG
  26. How to space piston rings
  27. Cam journal caps broke
  28. Should I replace PCM? Need 2nd & 3rd opinions
  29. New owner of 1997 Eldorado, many questions
  30. N* To pull or not to pull, A/C is the question.
  31. 2002 Deville; Installing Vin Y Engine Into Vin 9 Car
  32. Northstar PCM Tuning
  33. Cross over gaskets ?
  34. Smells like exhaust in antifreeze again............... ?
  35. Disabling air injection system in 2002 engine?
  36. Couple of problems with my 94 Seville.
  37. 1994 cadillac seville Spark plug change
  38. Bad head gaskets or user error?
  39. northstar pre-trip opinion
  40. Source for engine internal parts?
  41. First post: Anyone know if the RWD and AWD wire harnesses are the same for 04-05 STS?
  42. If Engine has been Studed can you Remove the heads and put the heads back with in car
  43. So where is my oil level sensor?
  44. Curious. . .crankshaft position sensors, are they reversable?
  45. Bad mileage
  46. Taking Pre-Orders for bottom end stud kits-
  47. Any good Northstar shops near Maryland?
  48. Have code P071 & P046
  49. Cost of DIY Headgaskets/studs?
  50. Ceramic coated exhaust manifolds?
  51. What is the timeline for Head Gasket failure
  52. Where are the parts for this build?
  53. MAF Housing R&R
  54. ticking tapping noise in engine video attached
  55. Interesting find........
  56. proper torque-to-yield on 99 sts
  57. Northstar 4.6 bottom end
  58. 1996 ETC Code nightmares p13
  59. 2000 STS Half-case seal gasket P/N
  60. Looks like an early factory "new" create engine
  61. Northstar Shake
  62. 5/16 course Head Bolts?
  63. Time sert removal
  64. tcc solenoid
  65. Just got exhaust work done and now I'm getting some codes... Advice? 2002 DTS
  66. Question regarding slight motor mount/tranny thump
  67. 85 Northstar head gasket jobs completed 85 Cadillacs saved!
  68. Looking for a shop in GA that uses Studs for HG repair
  69. Help with Tune Up Northstar 4.6
  70. Disassembling my first N*
  71. bad ground the route of all evil ??
  72. Mysterious loss of coolant / 7000 miles without a problem since new studs & gaskets..
  73. Engine swap question
  74. New Guy to Northstar and their General Maintaince
  75. Torque Converter Shaft
  76. Painting engine cover and valve cover/s
  77. 1996 Cadillac Seville SLS - Replacing water pump belt HELP!
  78. Still getting Missfire-New AC Delco Plugs and new coil packs
  79. Removing exhaust down pipe on 99 Seville
  80. 94 Cadillac Seville SLS flooding out real bad
  81. New Member engine overheating problem...
  82. Oil Pressure...
  83. Pretty sure I have a fuel leak somewhere under the hood
  84. Engine Coolant Temperature Gauges / Cooling Fans Operation Explained
  85. Oil, cams, Northstars, and ZDDP
  86. New member, 1st caddy- low coolant level warning
  87. 2000 SLS engine oddity
  88. 4.0 rebuild
  89. Northstar swap transmission please help
  90. Best method of cleaning
  91. Crank Bolt Removal and free block/tranny
  92. Time Sert Kit Needed.
  93. I’m not Convinced it the Head Gaskets again?
  94. Code question?
  95. Out the top! First time....
  96. cam swap to 4.0l
  97. Timesert Failure
  98. Looking for a GOOD shop in/near MASS for engine install.
  99. HG For Me Too!
  100. Northstar A/C
  101. ECU TROUBLE! IMPORTANT! How to fix or replace cut wires to ecu?
  102. Northstar in a 65 Corsa
  103. crank position sensor relearn
  104. I really need help OBD TROUBLE CODES 96 STS
  105. 2007 DTS Engine noise at start up help
  106. 02 Northstar in 99 sys basically complete
  107. Other Northstar Vehicles (LD8)
  108. Noticeable drop in power in warm weather
  109. norms insert alignment kit for sale
  110. 99 STS stumbles, P1370a, P1371a, P1377a codes; At wits end with this car
  111. 2000 cadillac sts completely stumped, tried everything and new to fourm.
  112. 2006 DTS Intermittent Leakage Causing Battery to go Dead Overnight
  113. new guy with 99 eldorado etc
  114. Anyone need a Stud Kit?
  115. Question about stud kit install?
  116. Timing question
  117. 94 eldo cooling problem
  118. Rear main (probable) seal leaking... talk to "Northstar performance" or no?
  119. Convert from Dex-Cool to green antifreeze
  120. Cracked Blocks. CKP swap to 00+ blocks?
  121. '96 STS starting trouble & heat only on right side
  122. how to replace a1994 sls map sensor, code p032
  123. Can anyone comment on the differences in '06 to '10 Vin Y (LD8) engines from '05
  124. 2002 Northstar security
  125. EMERGENCY! I have an interview tomorrow and my Car (2000 Eldo) is down!
  126. 2002 4t80e tranny
  127. Internal Engine Questions!
  128. Trouble communicating with Northstar Performance.
  129. It's been asked before, but more specifically.ACD 41-OEM Sparkplugs vs Denso Iridium
  130. Who has done the Most head gasket jobs on N's
  131. New supplier for a high performance exhaust crossover pipe
  132. Who has used studs from Northstar Performance ?
  133. Northstar XV12 engine
  134. Message to all stud kit customers, past, present, and future.
  135. Lower crankcase reseal questions
  136. Best Reasonably Priced Socket Tools?
  137. 2000 Eldo front cam cover gasket replacement
  138. P1599 - Engine Stall or Near Stall Detected
  139. No longer a Cadillac owner :-(
  140. PVC valve,where are you?
  141. Replaced head gaskets and northstar performance studs with egine in car
  142. Problem solved!
  143. Greetings all, Newby here. Got a '94 Eldo Northstar w/ zero problems and...
  144. new spark plugs and radio static
  145. Northstar removal guide - feedback wanted
  146. Crankcase half leak?
  147. 05 Northstar Timing Chain Failure?
  148. another shop pulling a scam?
  149. MAF SENSOR ISSUE 2000 Cadillac Seville SLS
  150. spark plugs
  151. Is it just me or does it seem like there are a lot more bad head gaskets, esp 2000+
  152. ignition switch keeps blowing on 02 deville
  153. idle vibration and no other codes/symptoms
  154. fuel pump info please
  155. 95 seville smokes tons at idle after sitting for a year
  156. Tapping Noise
  157. Coolant temp sensor
  158. 2002 Deville Mechanics are stumped
  159. white/blue smoke
  160. Fel-Pro or OEM gaskets?
  161. change to synthetic to help oil consumption?
  162. Steel of a deal?
  163. 94 top intake cover bolts- which side up
  164. 2002 Deville completely died at 80 mph
  165. pulsating engine and trans kickdown too high
  166. P0101 and P0741 -2000 Deville
  167. Cam shaft code 99 deville ongoing project with hg repair
  168. Blown Head Gasket 00 Deville
  169. God Bless America - stud kits to ship from new USA location
  170. Any differences between N* in 98 Deville and 98 Seville?
  171. 98 Deville HG failure
  172. Minimum idle speed adjustment on 1996 throttle body
  173. My NorthStar Head Stud installation picture
  174. bad idle and shuts off
  175. Question on Northstar small cover bolts, what size wrench?
  176. 2002 Cadillac DeVille and engine skip
  177. dropping Northstar
  178. Scan Tools For The DIY
  179. engine form 97 into 99?
  180. 94 4.6 Water Pump Housing question
  181. Northstar Performance - 24 hour head gasket repair & bottom end re-seal
  182. 1998 Deville, Both Cooling Fans fail to turn on when commanded with TECH II
  183. 1998 Deville Waterpump housing cover gasket is it reall a dealer only item
  184. Radiator Flush 02 deville
  185. Cannot remove spark plugs
  186. Crankshaft Sensors
  187. Crankshaft sensor?
  188. Fixed - Map sensors keep failing on 94 NorthStar
  189. Which motor mount is this?
  190. Stalls when stopping/stopped
  191. Help!!
  192. ♠ The never had a headgasket problem club…
  193. Cam Cover Colors
  194. P0410 and P0418 on 2005 Bonneville GXP
  195. Spark plug replacment
  196. 94 STS Acceleration issue
  197. EGR or IAC problem on -95 Eldo
  198. Northstar Headgasket Leak/Headbolts......Northstar Performance Bolts
  199. Sticky gas pedal
  200. Cannonball Run Sept 3/2011
  201. Would my baby make it?
  202. GM's response to ZDDP reduction in oil
  203. 1998 Cadillac STS overheating
  204. steel sleeve/block
  205. water pump cover gasket
  206. p0300
  207. New owner of a 98 Eldorado and need some advice
  208. Sub: The wikipedia of Cadillacs
  209. water pump cover leak
  210. headgasket thickness?!
  211. Garage sale
  212. Jake's studs make me happy in the pants.
  213. Any Previously tuned 2000 to 2003 PCM have lifetime tune upgrade
  214. 98 deville concour... correct spark plug gap
  215. Introduction and a little desperate for a fix
  216. 1998 Northstar throttle sticking.
  217. Coolant System Questions 1996 Cadillac Deville
  218. 98 seville sts white smoke
  219. Note to all stud kit customers, effective immediately pricing and policy changes.
  220. 2000 Deville Misfire
  221. Frequency of HG Failure by Age & Miles
  222. why is over filling bad ?
  223. Removing front valve covers from 99 STS engine in car.
  224. Catalytic Converter operating temp specs
  225. For those of you who've successfully rebuilt a northstar engine. . .
  226. cold carbon rap
  227. Note from grampa
  228. Jake i hope you are still here and have not left Thank you Jake for all you do
  229. when i get the heater core replaced to i stay Dex or go green
  230. Swapping PCM
  231. 99 STS running cold (yes cold!!)
  232. Denso Products
  233. '98 DeVille Northstar dies while coasting.
  234. 2000 seville SLS engine removal
  235. 94 Northstar Ecm options
  236. 350 Cadillac head gasket jobs completed
  237. 4.6 northstar injector information
  238. '99 STS with 16k miles, go for it or no?
  239. Bad MPG is freezing weather
  240. The dreaded weekly P0741 engine code & a fix
  241. Northstar Making a Loud Noise - Need Help!
  242. 99 STS Project
  243. Dead starter?
  244. looking for mechanic who does Time sert
  245. Northstar Engine Swap
  246. codes
  247. 2001 Northstar - Head Gaskets blown or not?? I'm stumped!!
  248. About to pull engine for head gaskets, mods and other repairs while engine is out
  249. Sea foaming l37
  250. Olds Aurora Hesitating