: Northstar Engines and System Technical Discussion



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