: Northstar Engines and System Technical Discussion



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