: Northstar Engines and System Technical Discussion



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  1. 2002 Northstar hearse overheat?
  2. Losing coolant, rough running @ start-up
  3. Considering a HG fix + a possible budget rebuild
  4. Cylinder #8 Misfire, changed plugs & coil, now what?
  5. Northstar FWD or RWD owner? You NEED to study this!
  6. Preventative water pump replacement ??
  7. 2005 Deville - Remove and Install Fuel Injectors
  8. How to evaluate a northstar before buying?
  9. how do you remove steering coupling from steering gear and ABS modulator 99 Eldorado
  10. What company make a good head gasket for the northstar engine
  11. 2002 DTS - A/C compressor clutch cycle?
  12. Which HG repair is the best GM time sert,NS300L Insert or SureGrip Head Stud Kit
  13. need information how to best and easy way to remove a engine for a 99 Eldorado
  14. 1995 4t80e output shaft came out with axle shaft?
  15. 1996 El Dorado engine knocking?
  16. My 2001 Deville's Engine is Overheating
  17. Did Cadillac fix the head bolt problem in 2005 northstar ?
  18. 4.6 Swap into 68 Deville
  19. 04 Deville - 1,3,5,7 misfiring
  20. 1996 - 2003 Northstar head bolt torque specs
  21. 2000 STS head bolt torque specs question and head photos
  22. 95 STS Northstar idles up and down pretty much all the time
  23. rear ignition cassette removal-2001
  24. Aurora L47 V8
  25. 4T80E Shift Kits?
  26. Northstar pre oil change cleaners / additives
  27. 4T80E Transmission will not engage (in any gear front or back)
  28. 2000 Eldorado Engine Noise
  29. Keeping 1st gear with T/C off on the 96-99 Northstars - Tuning update
  30. water pump removal
  31. Rear main seal question...
  32. NorthStar Top End Teardown in Car - Cylinder Head Insert Repair
  33. 1997 Northstar insert and timing help
  34. Check Engine Light won't go off - 2003 DTS
  35. Cylinder Compression
  36. P0300 - Misfires on cyls 1 and 2
  37. What's this gasket?
  38. torx size for studs studs
  39. 2000 Deville Now Burning A Quart Every 300 Miles Now What? 115k
  40. Odd possible HG failure - 2003 STS
  41. Check Coolant Level
  42. 1997 Deville Possible topend, maybe full rebuild!
  43. 2001 SLS Ignition Coil Packs
  44. Possible Head Gasket 2001 Deville
  45. 01 Overheating; suspect coolant flow Please advise.
  46. 2005 Deville Head Gasket
  47. Northstar thermostat housing leaks, possible overheating
  48. 2009 DTS 100,000 miles - burning oil smell
  49. Northstar timing chain tensioners
  50. 2000 DeVille - high temps, possible head gasket leak
  51. Hello all, I have an intake question
  52. valve roller rockers-2001
  53. Northstar block question
  54. Snakes
  55. Freeze Plugs
  56. Oil filer adapter o rings and oil level tube o ring
  57. LD8 vs LH2/LC3 Exhaust Flange
  58. Another Overheating question
  59. Cleaning Carbon Deposits on pistons/rings ??????
  60. 06 Luceren Northstar V8 overheating and heater core coolant leakage?
  61. P0140 after New Sensor
  62. freeze spray for guide pin removal
  63. Swap question
  64. Swapping a Y for a 9-2001
  65. Engines - 2001 SLS with cracked block
  66. 2000 STS wont start
  67. I cant get the front valve cover off a 1999 Seville Northstar
  68. trouble code P0175
  69. 2000 deville won't start due to gears
  70. 06 SRX N* VVT Part identification
  71. Building a 1996 Northstar base Deville engine
  72. 2005 Northstar Lifters Ticking
  73. Recommended spark plug for 2001 Northstar
  74. Rad Fan Diagnosis - 1997 SLS
  75. Deville cooling fans problem
  76. Best gasket/bolt kit for 1999 Northstar head job
  77. Cadillac Deville Engine swap 95 in a 98
  78. 99 Deville 4.6 Northstar - left intake camshaft replace
  79. 2000 STS with P0300 #4 - misfire - valvetrain damage
  80. 2002 Deville - P 0741 alone, long trip ?
  81. Head Gasket dilemma -- 1999 Deville
  82. 02 deville overheated and now starts rough for about 10-20 seconds
  83. Pros and Cons Of A Northstar
  84. Chevron Techron Usage
  85. 2002 STS Head Gasket repair... and more?
  86. 2000 Deville - Coolant leak from overflow tube
  87. Cassette Bolts
  88. Help, car won't start!
  89. 4T80E Fluid level
  90. Just curious ...
  91. 95 Vin9 transmission
  92. This sounds BAD... 2004 Deville Northstar with ticks and rattles
  93. 1998 STS some oil use, drips of oil every couple days & suspect head gasket
  94. Fuse issues - 1996 SLS injector circuits
  95. Oil leak at head.
  96. 94 Concours with First Generation Northstar
  97. Motor Rebuild Problem
  98. power steering
  99. 1999 Deville - P 0404 but I do not think its the EGR Valve
  100. New to me 08' DTS service question.
  101. 2011 Northstar HG
  102. Need a recommended Northstar rebuilder for purchase of new engine for my 01 deville.
  103. Details regarding the P0741 fix and engine reseal, Seville -99
  104. Guys:How many miles does your N* Motor have, WITHOUT ever doing a HeadGasket repair??
  105. 1996 Engine Swap
  106. 2004 DHS - plugs, coils changed - severe miss is back
  107. drill plate for studs
  108. Putting a NorthStar together in a 96 Deville. Need couple a bolts and some pictures.
  109. priming the oil system
  110. 1996 Deville - coolant leak
  111. Can you identify this bellhousing?
  112. code Y or 9-how do you tell on an '01?
  113. What brand of starter?
  114. Can plug wires deteriorate just from age?
  115. 300,000 mile Northstar
  116. Northstar 4.6 in a 2008 Cheverlot Silverado 1500 LS?
  117. Help Identifying This Throttle Body
  118. prefered oxygen sensor
  119. Antifreeze northstar motor
  120. easy test for blown head gasket
  121. Bank 1 Sensor 1; 96 Deville
  122. Anti-seize on spark plugs?
  123. 2003 STS intermittant P0101
  124. Lower crankcase seal job...
  125. Northstar Mechanics Near Venice, FL
  126. Northstar years - good and bad ?
  127. Is this the original engine in my car
  128. 2000 Deville - possible overheating ??
  129. 1999 deville - new water pump leak
  130. Northstar engine in 2006 Buick Lucerne Issues
  131. Great site for northstars
  132. To dex or not to dex, that is the question
  133. 2001 Deville overheating
  134. HB inserts-2001
  135. Purpose of Valve Reliefs in 1st Gen Motors
  136. Is there a way to look at a N*in a used car & see if the HG bolts have been changed?
  137. Any writeups on 03 DTS 4.6L timing chain replacement?
  138. 1996 Northstar - extended cold cranking periods
  139. 1996 Northstar - CMP location ?
  140. '97 Seville overheating after 2 Miles and after Thermaseal treatment
  141. Northstar lower crankcase torque?
  142. ECM disconnected
  143. 2001 Eldorado - Fix Headgasket or Engine Swap?
  144. Camshaft Position Sensor Replacement
  145. 1993 Allante - engine stalls and bogs. CMP OK
  146. Dune Cruiser...
  147. 1993 Northstar parts needed
  148. E10 and/or Premium fuel
  149. northstar crankshaft main journal size
  150. 1999 DeVille Head Stud, Gasket Repair
  151. Northstar Oil Pump
  152. 1998 Eldorado Knocking when warm
  153. 160000mls service - now engine missfires
  154. Failed Emissions NEED ADVICE!
  155. Headgasket how to prevent that ?
  156. Power steering issue after engine work - 2002 DHS
  157. Classic overheating (99 eldo) pressure relief valve clogged?
  158. timing chain tensioner question
  159. Could this be a busted roller cam follower ?
  160. Dexcool or the green coolant?
  161. 4.6 northstar timing
  162. OIL, 5W30 vs 5W40
  163. Nitrous supporting mods
  164. Transmissions to head brace.
  165. Cylinder Head Dowel Pins???
  166. 2000 DTS used bad Intake manifold
  167. Evap purge valve
  168. 2000 DTS started puilling down engine today
  169. So she put the wrong spark plugs into a 2001 DHS . . .
  170. North Star coolant
  171. NorthStar Performance
  172. 2002 Northstar engine repair
  173. NorthStar Performance - rebuilt rngine info
  174. Northstar transmission interchangeability
  175. What's still good and what's not...
  176. Trying to losing crank pulley bolt and it jumped time cant get the bolt to loosen!!
  177. L37 and LD8 engine interchange question
  178. Guess how many 1993-2003 N* are still on the road, without Head Gasket Failure?
  179. NORTHSTAR Head CASTING #12585774 - engine fit ??
  180. 2001 STS Alternator Not Charging
  181. 2002 STS Cooling Fan Operation
  182. Snapped bolt - serpentine idler, 1994 N*
  183. 1998 Northstar FWD torque converter options
  184. 02 DHS Head gasket job question...
  185. Oil Pan Compatibility
  186. What Should I replace While the engine is out?
  187. Upgraded 1998 DeVille Fuel Injectors
  188. 96 SLS Head Bolts
  189. Motor mounts
  190. complete swap
  191. Motor drags... won't start
  192. Stop engine low oil pressure
  193. Northstar water pump replacement
  194. Right side exhaust manifold removal on 1995 Seville STS
  195. Problem with headbolts on HG repair
  196. 2001 STS Hooked up jumper cables wrong now car wont charge
  197. NP rebuilt engine
  198. 99 STS collapsed lifter?
  199. 2002 Deville remove bumper to remove engine cradle
  200. Northstar Performance - Jake's Studs
  201. Truth about Northstar Engine Failure?
  202. Bank 1, Bank 2 which is which
  203. Changed crankshaft position sensors, have oil leak.
  204. Can STS 2001 Northstar be converted to E85
  205. Setting timing on 96 STS
  206. Northstar headgasket repair parts
  207. Replacing Driver's Side Radiator Fan 1998 DeVille
  208. 2003 SLS -High idle and temperature after cleaning throttle body
  209. New Owner--1999 Deville - P0741
  210. 1997 Eldorado surge tank nipple cracked.
  211. New TPS now Code P085
  212. Vacuum leak
  213. Still Holding On to Bernadette... And don't Want to let go
  214. Oh so soft aluminum
  215. 98 DeVille Overheating, Coolant Leak
  216. 2000 ESC overheating
  217. Head Gasket Blown?
  218. LH2 heads on LD8 ?
  219. RE: Where is Coolant Purge Line?
  220. Engine cover gasket.
  221. 2000 northstar timing
  222. head gasket with engine in car still 99 sts
  223. Question about Northstar engines
  224. 2003 SLS Headgasket?
  225. Damaged block. Am I screwed?
  226. Blown Head Gasket ? - 1998 Northstar
  227. ECM Protocol for 2005 SRX with 4.6L LH2
  228. Can I drill the head studs holes deeper?
  229. HG in Fredericksburg, Virginia
  230. High Mile N* motors somehow cause catalytic converter failures? Need real experience
  231. 1998 DeVille/Northstar engine problems and head gasket fix
  232. P0300 code - Idle is perfectly smooth until engine warms up to 170 degrees
  233. Steel Seal? Yes or No
  234. 2003 Deville Headgasket & Cyl head time?
  235. Weird clicking noise on passenger side of motor by belt.
  236. Is it always the threads?
  237. 1998 Deville overheat ?
  238. '99 Plastic Fuel Rail
  239. Spark Plug & Wire Install - 1998 Deville misfires
  240. Performance camshafts for 2009 "STS" ?
  241. How To: 1998 DeVille Accessory Belt Tensioner Interference!
  242. 95 eldorado engine interchangeability
  243. transmission side pan removal
  244. 1998 DeVille: Reset Codes from Digital Panel
  245. 2004 Deville - ignition coil checks
  246. Overheating Issues 1997 STS
  247. Can a Bad Catalytic Converter Cause Overheating Problems?
  248. I'm back, after CCC studs installed two years ago a blown HG and loose stud WTH?
  249. Headgasket Repair Shops - Maryland
  250. 00+ Northstar Intake manifold...why so filthy inside?