: Northstar Engines and System Technical Discussion



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  1. 2000 Deville - Coolant leak from overflow tube
  2. Cassette Bolts
  3. Help, car won't start!
  4. 4T80E Fluid level
  5. Just curious ...
  6. 95 Vin9 transmission
  7. This sounds BAD... 2004 Deville Northstar with ticks and rattles
  8. 1998 STS some oil use, drips of oil every couple days & suspect head gasket
  9. Fuse issues - 1996 SLS injector circuits
  10. Oil leak at head.
  11. 94 Concours with First Generation Northstar
  12. Motor Rebuild Problem
  13. power steering
  14. 1999 Deville - P 0404 but I do not think its the EGR Valve
  15. New to me 08' DTS service question.
  16. 2011 Northstar HG
  17. Need a recommended Northstar rebuilder for purchase of new engine for my 01 deville.
  18. Details regarding the P0741 fix and engine reseal, Seville -99
  19. Guys:How many miles does your N* Motor have, WITHOUT ever doing a HeadGasket repair??
  20. 1996 Engine Swap
  21. 2004 DHS - plugs, coils changed - severe miss is back
  22. drill plate for studs
  23. Putting a NorthStar together in a 96 Deville. Need couple a bolts and some pictures.
  24. priming the oil system
  25. 1996 Deville - coolant leak
  26. Can you identify this bellhousing?
  27. code Y or 9-how do you tell on an '01?
  28. What brand of starter?
  29. Can plug wires deteriorate just from age?
  30. 300,000 mile Northstar
  31. Northstar 4.6 in a 2008 Cheverlot Silverado 1500 LS?
  32. Help Identifying This Throttle Body
  33. prefered oxygen sensor
  34. Antifreeze northstar motor
  35. easy test for blown head gasket
  36. Bank 1 Sensor 1; 96 Deville
  37. Anti-seize on spark plugs?
  38. 2003 STS intermittant P0101
  39. Lower crankcase seal job...
  40. Northstar Mechanics Near Venice, FL
  41. Northstar years - good and bad ?
  42. Is this the original engine in my car
  43. 2000 Deville - possible overheating ??
  44. 1999 deville - new water pump leak
  45. Northstar engine in 2006 Buick Lucerne Issues
  46. Great site for northstars
  47. To dex or not to dex, that is the question
  48. 2001 Deville overheating
  49. HB inserts-2001
  50. Purpose of Valve Reliefs in 1st Gen Motors
  51. Is there a way to look at a N*in a used car & see if the HG bolts have been changed?
  52. Any writeups on 03 DTS 4.6L timing chain replacement?
  53. 1996 Northstar - extended cold cranking periods
  54. 1996 Northstar - CMP location ?
  55. '97 Seville overheating after 2 Miles and after Thermaseal treatment
  56. Northstar lower crankcase torque?
  57. ECM disconnected
  58. Camshaft Position Sensor Replacement
  59. 1993 Allante - engine stalls and bogs. CMP OK
  60. Dune Cruiser...
  61. 1993 Northstar parts needed
  62. E10 and/or Premium fuel
  63. northstar crankshaft main journal size
  64. 1999 DeVille Head Stud, Gasket Repair
  65. Northstar Oil Pump
  66. 1998 Eldorado Knocking when warm
  67. 160000mls service - now engine missfires
  68. Failed Emissions NEED ADVICE!
  69. Headgasket how to prevent that ?
  70. Power steering issue after engine work - 2002 DHS
  71. Classic overheating (99 eldo) pressure relief valve clogged?
  72. timing chain tensioner question
  73. Could this be a busted roller cam follower ?
  74. Dexcool or the green coolant?
  75. 4.6 northstar timing
  76. OIL, 5W30 vs 5W40
  77. Nitrous supporting mods
  78. Transmissions to head brace.
  79. Cylinder Head Dowel Pins???
  80. 2000 DTS used bad Intake manifold
  81. Evap purge valve
  82. 2000 DTS started puilling down engine today
  83. So she put the wrong spark plugs into a 2001 DHS . . .
  84. North Star coolant
  85. NorthStar Performance
  86. 2002 Northstar engine repair
  87. NorthStar Performance - rebuilt rngine info
  88. Northstar transmission interchangeability
  89. What's still good and what's not...
  90. Trying to losing crank pulley bolt and it jumped time cant get the bolt to loosen!!
  91. L37 and LD8 engine interchange question
  92. Guess how many 1993-2003 N* are still on the road, without Head Gasket Failure?
  93. NORTHSTAR Head CASTING #12585774 - engine fit ??
  94. 2001 STS Alternator Not Charging
  95. 2002 STS Cooling Fan Operation
  96. Snapped bolt - serpentine idler, 1994 N*
  97. 1998 Northstar FWD torque converter options
  98. 02 DHS Head gasket job question...
  99. Oil Pan Compatibility
  100. What Should I replace While the engine is out?
  101. Upgraded 1998 DeVille Fuel Injectors
  102. 96 SLS Head Bolts
  103. Motor mounts
  104. complete swap
  105. Motor drags... won't start
  106. Stop engine low oil pressure
  107. Northstar water pump replacement
  108. Right side exhaust manifold removal on 1995 Seville STS
  109. Problem with headbolts on HG repair
  110. 2001 STS Hooked up jumper cables wrong now car wont charge
  111. NP rebuilt engine
  112. 99 STS collapsed lifter?
  113. 2002 Deville remove bumper to remove engine cradle
  114. Northstar Performance - Jake's Studs
  115. Truth about Northstar Engine Failure?
  116. Bank 1, Bank 2 which is which
  117. Changed crankshaft position sensors, have oil leak.
  118. Can STS 2001 Northstar be converted to E85
  119. Setting timing on 96 STS
  120. Northstar headgasket repair parts
  121. Replacing Driver's Side Radiator Fan 1998 DeVille
  122. 2003 SLS -High idle and temperature after cleaning throttle body
  123. New Owner--1999 Deville - P0741
  124. 1997 Eldorado surge tank nipple cracked.
  125. New TPS now Code P085
  126. Vacuum leak
  127. Still Holding On to Bernadette... And don't Want to let go
  128. Oh so soft aluminum
  129. 98 DeVille Overheating, Coolant Leak
  130. 2000 ESC overheating
  131. Head Gasket Blown?
  132. LH2 heads on LD8 ?
  133. RE: Where is Coolant Purge Line?
  134. Engine cover gasket.
  135. 2000 northstar timing
  136. head gasket with engine in car still 99 sts
  137. Question about Northstar engines
  138. 2003 SLS Headgasket?
  139. Damaged block. Am I screwed?
  140. Blown Head Gasket ? - 1998 Northstar
  141. ECM Protocol for 2005 SRX with 4.6L LH2
  142. Can I drill the head studs holes deeper?
  143. HG in Fredericksburg, Virginia
  144. High Mile N* motors somehow cause catalytic converter failures? Need real experience
  145. 1998 DeVille/Northstar engine problems and head gasket fix
  146. P0300 code - Idle is perfectly smooth until engine warms up to 170 degrees
  147. Steel Seal? Yes or No
  148. 2003 Deville Headgasket & Cyl head time?
  149. Weird clicking noise on passenger side of motor by belt.
  150. Is it always the threads?
  151. 1998 Deville overheat ?
  152. '99 Plastic Fuel Rail
  153. Spark Plug & Wire Install - 1998 Deville misfires
  154. Performance camshafts for 2009 "STS" ?
  155. How To: 1998 DeVille Accessory Belt Tensioner Interference!
  156. 95 eldorado engine interchangeability
  157. transmission side pan removal
  158. 1998 DeVille: Reset Codes from Digital Panel
  159. 2004 Deville - ignition coil checks
  160. Overheating Issues 1997 STS
  161. Can a Bad Catalytic Converter Cause Overheating Problems?
  162. I'm back, after CCC studs installed two years ago a blown HG and loose stud WTH?
  163. Headgasket Repair Shops - Maryland
  164. 00+ Northstar Intake manifold...why so filthy inside?
  165. Super Star Studs...Anyone Ever Use Them?
  166. 1998 Deville Northstar head bolt hole repair ?
  167. Need info - Northstar engine rebuild/replace ?
  168. Head Gaskets?
  169. 1997 SLS Head Gasket Repair
  170. 2000 Deville Overheating
  171. Overheating problem - 1999 Deville
  172. 4T80E Transmission swapability
  173. 2002 Deville 220,000 miles. Want to change fuel pump.
  174. Eldorado strip times - Tuning thread
  175. 2001 DTS low oil pressure.
  176. 2003 DeVille oil pan gasket
  177. Longblock swap 2004 to 1995 4.6 FWD possible with 95 electronics?
  178. 94 Deville Concours - engine oil leak
  179. Sounds like a bearing loose - 1997 Deville
  180. Repair estimate quite high. 2000 Deville engine work
  181. Paging JoeTahoe
  182. What studs to get?
  183. Northstar in a Fiero?
  184. Overheating problem - Deville
  185. 1995 Deville ignition Coil Replacement
  186. 99 STS Head Gaskets going... Again
  187. 2000 ETC oil leak
  188. Low Oil Pressure and Coolant Temperature Messages On
  189. What kind of code reader?
  190. 99- and 00+ Interchangeability
  191. Strange banging noise - 2002 STS with Japanese-speaking DIC
  192. Tuneup - 1998 Northstar
  193. 03 Deville Motor mount R/I Hrs?
  194. 2004 Deville plenum replacement ?
  195. 1997 STS - Starting Issues and Rough Idle
  196. any help would be great tranny will not shift
  197. serpentine belt replacement
  198. Another overheating thread
  199. 2004 DHS - hard start, engine run problems
  200. Jake - Northstar Performance - your in-box is FULL -
  201. Arizona Northstar repair shop ?
  202. 98 Eldorado water cooled alternator doesn't charge when cold
  203. 1994 Eldorado - coolant leaks
  204. Coppery substance in coolant?
  205. problem with torque converter bolts
  206. 1999 Deville 4.6 Base misfire code
  207. Pre 2000 Northstar Crankshaft Position Sensors
  208. Replacing Coolant Crossover
  209. cooling system seal tablet
  210. 2002 STS Coolant Crossover Gaskets
  211. head gasket
  212. Suprise... Headgaskets
  213. Cost to replace oil pan gasket?
  214. Need help - considering a Northstar build for an ElCamino
  215. Dipstick reading
  216. North Star head bolt problem
  217. Spark plugs - 1997 Y Northstar
  218. first Cadillac questons about Northstar
  219. Head Bolt/stud question
  220. Just bought a 1995 Eldorado..was wondering what I should be looking at for maintenane
  221. 1999 SLS - apparent overheating ?
  222. Engine tap
  223. Compression And Leak Down Results.....Cam/Valve Timing Observation Discussion
  224. Why at the beginning of fuel rail and not end?
  225. 1999 DeVille coolant leak
  226. '97-won't start (fire)
  227. My Grandmothers Friend's 2000 STS has Misfire. She has a question
  228. P0507 Idle speed high after engine removal
  229. Engine block identification
  230. Cylinder Head Problems - 2005 DTS
  231. '99 Northstar head bolt torque values
  232. 1996 Deville - no fuel at the rail
  233. 2003 Deville idle air control valve
  234. 2000 Deville - dead batteries, no crank
  235. Engine cradle pulling down...
  236. 1996 Concours Oxygen Sensors
  237. 2000 - 2004 PCV piping question
  238. Help with a possible head gasket issue...2002 SLS
  239. Northstar 2001 Head Gasket Repair - Charlotte, North Carolina
  240. Northstar Engine Problems, were they ever corrected in production by GM??
  241. Anyone Ever Use A Company In Jersey Called Top Line Auto Care
  242. surge tank cap pressure
  243. Heater Pipe Adapter Part #?
  244. What Is This Gasket
  245. Northstar fuel fouling on Bank 2 good on Bank 1
  246. Thought I'd never buy another Northstar but...
  247. 2002 DTS transmission codes P 1860, P 0741
  248. Head gasket replacement
  249. Introduction - 1997 SLS with problems
  250. engine swap 2004 to a 1997 deville