: Northstar Engines and System Technical Discussion



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  1. Northstar pre oil change cleaners / additives
  2. 4T80E Transmission will not engage (in any gear front or back)
  3. 2000 Eldorado Engine Noise
  4. Keeping 1st gear with T/C off on the 96-99 Northstars - Tuning update
  5. water pump removal
  6. Rear main seal question...
  7. NorthStar Top End Teardown in Car - Cylinder Head Insert Repair
  8. 1997 Northstar insert and timing help
  9. Check Engine Light won't go off - 2003 DTS
  10. Cylinder Compression
  11. P0300 - Misfires on cyls 1 and 2
  12. What's this gasket?
  13. torx size for studs studs
  14. 2000 Deville Now Burning A Quart Every 300 Miles Now What? 115k
  15. Odd possible HG failure - 2003 STS
  16. Check Coolant Level
  17. 1997 Deville Possible topend, maybe full rebuild!
  18. 2001 SLS Ignition Coil Packs
  19. Possible Head Gasket 2001 Deville
  20. 01 Overheating; suspect coolant flow Please advise.
  21. 2005 Deville Head Gasket
  22. Northstar thermostat housing leaks, possible overheating
  23. 2009 DTS 100,000 miles - burning oil smell
  24. Northstar timing chain tensioners
  25. 2000 DeVille - high temps, possible head gasket leak
  26. Hello all, I have an intake question
  27. valve roller rockers-2001
  28. Northstar block question
  29. Snakes
  30. Freeze Plugs
  31. Oil filer adapter o rings and oil level tube o ring
  32. LD8 vs LH2/LC3 Exhaust Flange
  33. Another Overheating question
  34. Cleaning Carbon Deposits on pistons/rings ??????
  35. 06 Luceren Northstar V8 overheating and heater core coolant leakage?
  36. P0140 after New Sensor
  37. freeze spray for guide pin removal
  38. Swap question
  39. Swapping a Y for a 9-2001
  40. Engines - 2001 SLS with cracked block
  41. 2000 STS wont start
  42. I cant get the front valve cover off a 1999 Seville Northstar
  43. trouble code P0175
  44. 2000 deville won't start due to gears
  45. 06 SRX N* VVT Part identification
  46. Building a 1996 Northstar base Deville engine
  47. 2005 Northstar Lifters Ticking
  48. Recommended spark plug for 2001 Northstar
  49. Rad Fan Diagnosis - 1997 SLS
  50. Deville cooling fans problem
  51. Best gasket/bolt kit for 1999 Northstar head job
  52. Cadillac Deville Engine swap 95 in a 98
  53. 99 Deville 4.6 Northstar - left intake camshaft replace
  54. 2000 STS with P0300 #4 - misfire - valvetrain damage
  55. 2002 Deville - P 0741 alone, long trip ?
  56. Head Gasket dilemma -- 1999 Deville
  57. 02 deville overheated and now starts rough for about 10-20 seconds
  58. Pros and Cons Of A Northstar
  59. Chevron Techron Usage
  60. 2002 STS Head Gasket repair... and more?
  61. 2000 Deville - Coolant leak from overflow tube
  62. Cassette Bolts
  63. Help, car won't start!
  64. 4T80E Fluid level
  65. Just curious ...
  66. 95 Vin9 transmission
  67. This sounds BAD... 2004 Deville Northstar with ticks and rattles
  68. 1998 STS some oil use, drips of oil every couple days & suspect head gasket
  69. Fuse issues - 1996 SLS injector circuits
  70. Oil leak at head.
  71. 94 Concours with First Generation Northstar
  72. Motor Rebuild Problem
  73. power steering
  74. 1999 Deville - P 0404 but I do not think its the EGR Valve
  75. New to me 08' DTS service question.
  76. 2011 Northstar HG
  77. Need a recommended Northstar rebuilder for purchase of new engine for my 01 deville.
  78. Details regarding the P0741 fix and engine reseal, Seville -99
  79. Guys:How many miles does your N* Motor have, WITHOUT ever doing a HeadGasket repair??
  80. 1996 Engine Swap
  81. 2004 DHS - plugs, coils changed - severe miss is back
  82. drill plate for studs
  83. Putting a NorthStar together in a 96 Deville. Need couple a bolts and some pictures.
  84. priming the oil system
  85. 1996 Deville - coolant leak
  86. Can you identify this bellhousing?
  87. code Y or 9-how do you tell on an '01?
  88. What brand of starter?
  89. Can plug wires deteriorate just from age?
  90. 300,000 mile Northstar
  91. Northstar 4.6 in a 2008 Cheverlot Silverado 1500 LS?
  92. Help Identifying This Throttle Body
  93. prefered oxygen sensor
  94. Antifreeze northstar motor
  95. easy test for blown head gasket
  96. Bank 1 Sensor 1; 96 Deville
  97. Anti-seize on spark plugs?
  98. 2003 STS intermittant P0101
  99. Lower crankcase seal job...
  100. Northstar Mechanics Near Venice, FL
  101. Northstar years - good and bad ?
  102. Is this the original engine in my car
  103. 2000 Deville - possible overheating ??
  104. 1999 deville - new water pump leak
  105. Northstar engine in 2006 Buick Lucerne Issues
  106. Great site for northstars
  107. To dex or not to dex, that is the question
  108. 2001 Deville overheating
  109. HB inserts-2001
  110. Purpose of Valve Reliefs in 1st Gen Motors
  111. Is there a way to look at a N*in a used car & see if the HG bolts have been changed?
  112. Any writeups on 03 DTS 4.6L timing chain replacement?
  113. 1996 Northstar - extended cold cranking periods
  114. 1996 Northstar - CMP location ?
  115. '97 Seville overheating after 2 Miles and after Thermaseal treatment
  116. Northstar lower crankcase torque?
  117. ECM disconnected
  118. 2001 Eldorado - Fix Headgasket or Engine Swap?
  119. Camshaft Position Sensor Replacement
  120. 1993 Allante - engine stalls and bogs. CMP OK
  121. Dune Cruiser...
  122. 1993 Northstar parts needed
  123. E10 and/or Premium fuel
  124. northstar crankshaft main journal size
  125. 1999 DeVille Head Stud, Gasket Repair
  126. Northstar Oil Pump
  127. 1998 Eldorado Knocking when warm
  128. 160000mls service - now engine missfires
  129. Failed Emissions NEED ADVICE!
  130. Headgasket how to prevent that ?
  131. Power steering issue after engine work - 2002 DHS
  132. Classic overheating (99 eldo) pressure relief valve clogged?
  133. timing chain tensioner question
  134. Could this be a busted roller cam follower ?
  135. Dexcool or the green coolant?
  136. 4.6 northstar timing
  137. OIL, 5W30 vs 5W40
  138. Nitrous supporting mods
  139. Transmissions to head brace.
  140. Cylinder Head Dowel Pins???
  141. 2000 DTS used bad Intake manifold
  142. Evap purge valve
  143. 2000 DTS started puilling down engine today
  144. So she put the wrong spark plugs into a 2001 DHS . . .
  145. North Star coolant
  146. NorthStar Performance
  147. 2002 Northstar engine repair
  148. NorthStar Performance - rebuilt rngine info
  149. Northstar transmission interchangeability
  150. What's still good and what's not...
  151. Trying to losing crank pulley bolt and it jumped time cant get the bolt to loosen!!
  152. L37 and LD8 engine interchange question
  153. Guess how many 1993-2003 N* are still on the road, without Head Gasket Failure?
  154. NORTHSTAR Head CASTING #12585774 - engine fit ??
  155. 2001 STS Alternator Not Charging
  156. 2002 STS Cooling Fan Operation
  157. Snapped bolt - serpentine idler, 1994 N*
  158. 1998 Northstar FWD torque converter options
  159. 02 DHS Head gasket job question...
  160. Oil Pan Compatibility
  161. What Should I replace While the engine is out?
  162. Upgraded 1998 DeVille Fuel Injectors
  163. 96 SLS Head Bolts
  164. Motor mounts
  165. complete swap
  166. Motor drags... won't start
  167. Stop engine low oil pressure
  168. Northstar water pump replacement
  169. Right side exhaust manifold removal on 1995 Seville STS
  170. Problem with headbolts on HG repair
  171. 2001 STS Hooked up jumper cables wrong now car wont charge
  172. NP rebuilt engine
  173. 99 STS collapsed lifter?
  174. 2002 Deville remove bumper to remove engine cradle
  175. Northstar Performance - Jake's Studs
  176. Truth about Northstar Engine Failure?
  177. Bank 1, Bank 2 which is which
  178. Changed crankshaft position sensors, have oil leak.
  179. Can STS 2001 Northstar be converted to E85
  180. Setting timing on 96 STS
  181. Northstar headgasket repair parts
  182. Replacing Driver's Side Radiator Fan 1998 DeVille
  183. 2003 SLS -High idle and temperature after cleaning throttle body
  184. New Owner--1999 Deville - P0741
  185. 1997 Eldorado surge tank nipple cracked.
  186. New TPS now Code P085
  187. Vacuum leak
  188. Still Holding On to Bernadette... And don't Want to let go
  189. Oh so soft aluminum
  190. 98 DeVille Overheating, Coolant Leak
  191. 2000 ESC overheating
  192. Head Gasket Blown?
  193. LH2 heads on LD8 ?
  194. RE: Where is Coolant Purge Line?
  195. Engine cover gasket.
  196. 2000 northstar timing
  197. head gasket with engine in car still 99 sts
  198. Question about Northstar engines
  199. 2003 SLS Headgasket?
  200. Damaged block. Am I screwed?
  201. Blown Head Gasket ? - 1998 Northstar
  202. ECM Protocol for 2005 SRX with 4.6L LH2
  203. Can I drill the head studs holes deeper?
  204. HG in Fredericksburg, Virginia
  205. High Mile N* motors somehow cause catalytic converter failures? Need real experience
  206. 1998 DeVille/Northstar engine problems and head gasket fix
  207. P0300 code - Idle is perfectly smooth until engine warms up to 170 degrees
  208. Steel Seal? Yes or No
  209. 2003 Deville Headgasket & Cyl head time?
  210. Weird clicking noise on passenger side of motor by belt.
  211. Is it always the threads?
  212. 1998 Deville overheat ?
  213. '99 Plastic Fuel Rail
  214. Spark Plug & Wire Install - 1998 Deville misfires
  215. Performance camshafts for 2009 "STS" ?
  216. How To: 1998 DeVille Accessory Belt Tensioner Interference!
  217. 95 eldorado engine interchangeability
  218. transmission side pan removal
  219. 1998 DeVille: Reset Codes from Digital Panel
  220. 2004 Deville - ignition coil checks
  221. Overheating Issues 1997 STS
  222. Can a Bad Catalytic Converter Cause Overheating Problems?
  223. I'm back, after CCC studs installed two years ago a blown HG and loose stud WTH?
  224. Headgasket Repair Shops - Maryland
  225. 00+ Northstar Intake manifold...why so filthy inside?
  226. Super Star Studs...Anyone Ever Use Them?
  227. 1998 Deville Northstar head bolt hole repair ?
  228. Need info - Northstar engine rebuild/replace ?
  229. Head Gaskets?
  230. 1997 SLS Head Gasket Repair
  231. 2000 Deville Overheating
  232. Overheating problem - 1999 Deville
  233. 4T80E Transmission swapability
  234. 2002 Deville 220,000 miles. Want to change fuel pump.
  235. Eldorado strip times - Tuning thread
  236. 2001 DTS low oil pressure.
  237. 2003 DeVille oil pan gasket
  238. Longblock swap 2004 to 1995 4.6 FWD possible with 95 electronics?
  239. 94 Deville Concours - engine oil leak
  240. Sounds like a bearing loose - 1997 Deville
  241. Repair estimate quite high. 2000 Deville engine work
  242. Paging JoeTahoe
  243. What studs to get?
  244. Northstar in a Fiero?
  245. Overheating problem - Deville
  246. 1995 Deville ignition Coil Replacement
  247. 99 STS Head Gaskets going... Again
  248. 2000 ETC oil leak
  249. Low Oil Pressure and Coolant Temperature Messages On
  250. What kind of code reader?