: Northstar Engines and System Technical Discussion



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  1. 94 Deville Concours PCM Codes P041 and P119
  2. Misfire Cylender 4 Low Compresion after flashing SES and p0300
  3. prospective owner with HG question
  4. tcc solenoid need help asap
  5. egr blockoff
  6. 01 eldorado ESC "hard" starting and once wouldn't start
  7. Shelby 1 Olds Supercharged Aurora - How About LS9 or LSA?
  8. Direct Injection - Technology Question
  9. Bought the '97 etc replacement
  10. Advice from some repair guys on cleaning processes
  11. 94 STS head gasket question
  12. Doesn't seem to be the head gasket but still overheats
  13. Looking for HG Repair Shop in Southeast US
  14. evap solonoid
  15. Ebay: Brand new Vortech Supercharged Aurora 4.0 engine
  16. 1995 elder northstar cooling
  17. how to change camshaft position sensor on 1997 sts
  18. Not happy with Federal Mogul's quality levels anymore. Specifically Fel-Pro.
  19. 1994 SLS Northstar running rich and stalling
  20. Front seal is leaking
  21. Thorttle body problem and code p2135
  22. Ignition drop-outs
  23. L37, ld8, l47 & lx5
  24. My 98 Deville with straight pipes... what do you guys think?
  25. hg repairs
  26. Wierd Temperature spikes 02 deville
  27. There was a thread or sticky that was all about engine oild and dino or conventional
  28. Oil pump prime
  29. Motor Mount project
  30. Hello Everyone, I need help with getting an engine......
  31. P0304 Misfire cylinder 4
  32. N* picky about motor oil?
  33. Timing chain seems loose on a 4.6L Deville.
  34. 99 deville fans just stop both of them
  35. Replacing a TPS in a 99 Deville?
  36. 2000 Deville Idle Relearn
  37. Polishing Cam lobes?
  38. Northstar Tuneup
  39. Felpro intake manifold gaskets
  40. PCM Codes P0171 and P0174
  41. 100 Cadillac head gasket repairs completed
  42. NorthStar Engine Block Crack Have you had one What year and how did it crack
  43. 4.6 N* Crank shaft / oil pump question
  44. hard starting 1997 sts
  45. air in coolant system?
  46. more electrical gremlins
  47. No fuel pressure
  48. Photos of the CNC turning center-
  49. 98 STS White smoke on accelation
  50. Should I have my brand new, never fired 4.0 long-block studded?
  51. Found my coolant leak
  52. Oil pump seal/oring
  53. Looking for a SPECIFIC N* Removal Guide
  54. Remote start and push button ignition
  55. Consequences of driving with failed HG
  56. How to space piston rings
  57. Cam journal caps broke
  58. Should I replace PCM? Need 2nd & 3rd opinions
  59. New owner of 1997 Eldorado, many questions
  60. N* To pull or not to pull, A/C is the question.
  61. 2002 Deville; Installing Vin Y Engine Into Vin 9 Car
  62. Northstar PCM Tuning
  63. Cross over gaskets ?
  64. Smells like exhaust in antifreeze again............... ?
  65. Disabling air injection system in 2002 engine?
  66. Couple of problems with my 94 Seville.
  67. 1994 cadillac seville Spark plug change
  68. Bad head gaskets or user error?
  69. northstar pre-trip opinion
  70. Source for engine internal parts?
  71. First post: Anyone know if the RWD and AWD wire harnesses are the same for 04-05 STS?
  72. If Engine has been Studed can you Remove the heads and put the heads back with in car
  73. So where is my oil level sensor?
  74. Curious. . .crankshaft position sensors, are they reversable?
  75. Bad mileage
  76. Taking Pre-Orders for bottom end stud kits-
  77. Any good Northstar shops near Maryland?
  78. Have code P071 & P046
  79. Cost of DIY Headgaskets/studs?
  80. Ceramic coated exhaust manifolds?
  81. What is the timeline for Head Gasket failure
  82. Where are the parts for this build?
  83. MAF Housing R&R
  84. ticking tapping noise in engine video attached
  85. Interesting find........
  86. proper torque-to-yield on 99 sts
  87. Northstar 4.6 bottom end
  88. 1996 ETC Code nightmares p13
  89. 2000 STS Half-case seal gasket P/N
  90. Looks like an early factory "new" create engine
  91. Northstar Shake
  92. 5/16 course Head Bolts?
  93. Time sert removal
  94. tcc solenoid
  95. Just got exhaust work done and now I'm getting some codes... Advice? 2002 DTS
  96. Question regarding slight motor mount/tranny thump
  97. 85 Northstar head gasket jobs completed 85 Cadillacs saved!
  98. Looking for a shop in GA that uses Studs for HG repair
  99. Help with Tune Up Northstar 4.6
  100. Disassembling my first N*
  101. bad ground the route of all evil ??
  102. Mysterious loss of coolant / 7000 miles without a problem since new studs & gaskets..
  103. Engine swap question
  104. New Guy to Northstar and their General Maintaince
  105. Torque Converter Shaft
  106. Painting engine cover and valve cover/s
  107. 1996 Cadillac Seville SLS - Replacing water pump belt HELP!
  108. Still getting Missfire-New AC Delco Plugs and new coil packs
  109. Removing exhaust down pipe on 99 Seville
  110. 94 Cadillac Seville SLS flooding out real bad
  111. New Member engine overheating problem...
  112. Oil Pressure...
  113. Pretty sure I have a fuel leak somewhere under the hood
  114. Engine Coolant Temperature Gauges / Cooling Fans Operation Explained
  115. Oil, cams, Northstars, and ZDDP
  116. New member, 1st caddy- low coolant level warning
  117. 2000 SLS engine oddity
  118. 4.0 rebuild
  119. Northstar swap transmission please help
  120. Best method of cleaning
  121. Crank Bolt Removal and free block/tranny
  122. Time Sert Kit Needed.
  123. I’m not Convinced it the Head Gaskets again?
  124. Code question?
  125. Out the top! First time....
  126. cam swap to 4.0l
  127. Timesert Failure
  128. Looking for a GOOD shop in/near MASS for engine install.
  129. HG For Me Too!
  130. Northstar A/C
  131. ECU TROUBLE! IMPORTANT! How to fix or replace cut wires to ecu?
  132. Northstar in a 65 Corsa
  133. crank position sensor relearn
  134. I really need help OBD TROUBLE CODES 96 STS
  135. 2007 DTS Engine noise at start up help
  136. 02 Northstar in 99 sys basically complete
  137. Other Northstar Vehicles (LD8)
  138. Noticeable drop in power in warm weather
  139. norms insert alignment kit for sale
  140. 99 STS stumbles, P1370a, P1371a, P1377a codes; At wits end with this car
  141. 2000 cadillac sts completely stumped, tried everything and new to fourm.
  142. 2006 DTS Intermittent Leakage Causing Battery to go Dead Overnight
  143. new guy with 99 eldorado etc
  144. Anyone need a Stud Kit?
  145. Question about stud kit install?
  146. Timing question
  147. 94 eldo cooling problem
  148. Rear main (probable) seal leaking... talk to "Northstar performance" or no?
  149. Convert from Dex-Cool to green antifreeze
  150. Cracked Blocks. CKP swap to 00+ blocks?
  151. '96 STS starting trouble & heat only on right side
  152. how to replace a1994 sls map sensor, code p032
  153. Can anyone comment on the differences in '06 to '10 Vin Y (LD8) engines from '05
  154. 2002 Northstar security
  155. EMERGENCY! I have an interview tomorrow and my Car (2000 Eldo) is down!
  156. 2002 4t80e tranny
  157. Internal Engine Questions!
  158. Trouble communicating with Northstar Performance.
  159. It's been asked before, but more specifically.ACD 41-OEM Sparkplugs vs Denso Iridium
  160. Who has done the Most head gasket jobs on N's
  161. New supplier for a high performance exhaust crossover pipe
  162. Who has used studs from Northstar Performance ?
  163. Northstar XV12 engine
  164. Message to all stud kit customers, past, present, and future.
  165. Lower crankcase reseal questions
  166. Best Reasonably Priced Socket Tools?
  167. 2000 Eldo front cam cover gasket replacement
  168. P1599 - Engine Stall or Near Stall Detected
  169. No longer a Cadillac owner :-(
  170. PVC valve,where are you?
  171. Replaced head gaskets and northstar performance studs with egine in car
  172. Problem solved!
  173. Greetings all, Newby here. Got a '94 Eldo Northstar w/ zero problems and...
  174. new spark plugs and radio static
  175. Northstar removal guide - feedback wanted
  176. Crankcase half leak?
  177. 05 Northstar Timing Chain Failure?
  178. another shop pulling a scam?
  179. MAF SENSOR ISSUE 2000 Cadillac Seville SLS
  180. spark plugs
  181. Is it just me or does it seem like there are a lot more bad head gaskets, esp 2000+
  182. ignition switch keeps blowing on 02 deville
  183. idle vibration and no other codes/symptoms
  184. fuel pump info please
  185. 95 seville smokes tons at idle after sitting for a year
  186. Tapping Noise
  187. Coolant temp sensor
  188. 2002 Deville Mechanics are stumped
  189. white/blue smoke
  190. Fel-Pro or OEM gaskets?
  191. change to synthetic to help oil consumption?
  192. Steel of a deal?
  193. 94 top intake cover bolts- which side up
  194. 2002 Deville completely died at 80 mph
  195. pulsating engine and trans kickdown too high
  196. P0101 and P0741 -2000 Deville
  197. Cam shaft code 99 deville ongoing project with hg repair
  198. Blown Head Gasket 00 Deville
  199. God Bless America - stud kits to ship from new USA location
  200. Any differences between N* in 98 Deville and 98 Seville?
  201. 98 Deville HG failure
  202. Minimum idle speed adjustment on 1996 throttle body
  203. My NorthStar Head Stud installation picture
  204. bad idle and shuts off
  205. Question on Northstar small cover bolts, what size wrench?
  206. 2002 Cadillac DeVille and engine skip
  207. dropping Northstar
  208. Scan Tools For The DIY
  209. engine form 97 into 99?
  210. 94 4.6 Water Pump Housing question
  211. Northstar Performance - 24 hour head gasket repair & bottom end re-seal
  212. 1998 Deville, Both Cooling Fans fail to turn on when commanded with TECH II
  213. 1998 Deville Waterpump housing cover gasket is it reall a dealer only item
  214. Radiator Flush 02 deville
  215. Cannot remove spark plugs
  216. Crankshaft Sensors
  217. Crankshaft sensor?
  218. Fixed - Map sensors keep failing on 94 NorthStar
  219. Which motor mount is this?
  220. Stalls when stopping/stopped
  221. Help!!
  222. ♠ The never had a headgasket problem club…
  223. Cam Cover Colors
  224. P0410 and P0418 on 2005 Bonneville GXP
  225. Spark plug replacment
  226. 94 STS Acceleration issue
  227. EGR or IAC problem on -95 Eldo
  228. Northstar Headgasket Leak/Headbolts......Northstar Performance Bolts
  229. Sticky gas pedal
  230. Cannonball Run Sept 3/2011
  231. Would my baby make it?
  232. GM's response to ZDDP reduction in oil
  233. 1998 Cadillac STS overheating
  234. steel sleeve/block
  235. water pump cover gasket
  236. p0300
  237. New owner of a 98 Eldorado and need some advice
  238. Sub: The wikipedia of Cadillacs
  239. water pump cover leak
  240. headgasket thickness?!
  241. Garage sale
  242. Jake's studs make me happy in the pants.
  243. Any Previously tuned 2000 to 2003 PCM have lifetime tune upgrade
  244. 98 deville concour... correct spark plug gap
  245. Introduction and a little desperate for a fix
  246. 1998 Northstar throttle sticking.
  247. Coolant System Questions 1996 Cadillac Deville
  248. 98 seville sts white smoke
  249. Note to all stud kit customers, effective immediately pricing and policy changes.
  250. 2000 Deville Misfire