: Northstar Engines and System Technical Discussion



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