Northstar Engines and System Technical Discussion


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  1. 2004 Deville Head Bolts
  2. Low oil pressure at idle unresolvable
  3. WOT procedure without tachometer?
  4. Tighten harmonic balancer
  5. Olds LX5 Shortstar head gasket issues?
  6. Secondary "marks" of repaired heads...
  7. 2005 Deville Engine Noise Grey Oil
  8. Northstar rebuild - essentials
  9. 07 DTS Mounts repalcement
  10. Cylinder diagram for 2009 STS 4.6 L motor
  11. WOT done, water pumps, engine cleaning, detailing
  12. Why are the ignition coils different colors?
  13. Will any other Model engine direct swap?
  14. What else to do while studding a 1999 Northstar V8?
  15. Is ZDDP additive supplement ok to use in a Northstar motor
  16. torque converter noise cadillac from france
  17. 1997 northstar dogbone/torque strut mount *bracket* replacement woes...
  18. 99 Deville sudden severe oil leak
  19. water pump removal
  20. 2009 STS rough start when cold
  21. 2003 STS oil level sensor
  22. Brake Cleaner and Gaskets
  23. Idle Air Control Valve and P0106 and P0506 codes
  24. STS Northstar - Street Rod
  25. slow water pump?
  26. Crankshaft Position Sensor - Install Problem
  27. Mechanic's "database" on Northstar HG failure
  28. serpentine belt differences over the years ?
  29. Head gasket in car repair 99 Deville
  30. 2001 Seville SLS - Resonator Delete
  31. Possible valve timing error after head gasket repair 99 Deviile
  32. 2004 Deville Overheat issue
  33. 2004 Deville V8 Northstar ... oil pan drain plug hole may be stripped
  34. 2005 Deville Northstar engine overheating - not head gasket related
  35. Help - stripped threads on A/C compressor bolt
  36. Engine replacement dowel points 2005 Deville?
  37. 1994 STS Won't stay running
  38. Misfire at idle speed in drive and reverse, no codes 2007
  39. Starter bolt size for 2003 Northstar
  40. Injector Circuit Open Codes P0202 - P0208, blowing the inj fuse, do I hardwire it?
  41. 95 Eldorado - rough running, backfire into intake manifold
  42. is there a need to prime fuel system?
  43. aurora N* white- smoke no coolant loss system hold pressure
  44. 650 Northstar head gasket repairs completed !!!
  45. Intake manifold clean up
  46. N* ecu tune in 2018
  47. Erratic behaviors: Can a bad body control computer cause an engine misfire?
  48. replacing camshaft actuator solenoids
  49. Hydraulic or solid motor mount
  50. Installing new cam followers - 1997 base Deville
  51. 2007 Injector Circuit Open Code Fest, P0202, P0204, P0206, P0208
  52. Dead cylinders, 2005 STS 4.6L vin A
  53. Northstar engine trouble - 1999 Eldorado
  54. Northstar 4.6 timing chain componets
  55. Northstar Performance issue?
  56. '04 Deville/ Head Gasket replacement cost?
  57. Y to 9 engine swap-'99 deville
  58. Misfiring mystery help
  59. Rear main tool confusion... again
  60. 2006 dts base C0561 P0107 P0520 P2431
  61. camcover gasket
  62. Cam retainers- which way they go?
  63. Timing Chain Tensioner
  64. Engine Rebuild Question
  65. engine swap and blletproofing 2001 aurora
  66. 1998 Deville base - O2 codes
  67. Starter motor unreliable
  68. Northstar NHP engines
  69. Northstar engine, stuck water pump
  70. Intake manifold , unbelievable or not?
  71. 2001 STS - P 0171/P 0174 lean mixture codes
  72. 2006 northstar whine/hum
  73. 2005 Deville replacement engine advice?
  74. 1999 Northstar cam gear alignment
  75. 1997 top ring gap
  76. Heavy weight engine oil?
  77. Convert 2000 VIN Y engine to VIN 9?
  78. 2005 Deville starting problem and its not the starter
  79. 2004 Seville Front Motor Mount Replacement
  80. Minor oil leak leads to $4,000.00 engine pull
  81. 1997 SLS seems to run warm
  82. Midwest Cadillac Repair completes 618 Northstar
  83. 2004 STS MAF sensor
  84. 04 northstar starting issues
  85. Wzup my fellow cadillac owners - 1999 Northstar head gaskets
  86. 2000 ESC Overheating - Any Guidance?
  87. Correct Air Fuel Ratio? Dreaded Codes P0171, P0174
  88. Seville 1999 spark plugs
  89. 1999 STS - flexplate removal
  90. All DIC codes say "HISTORY" on rough running '97 Northstar
  91. 2001 STS subframe bushings
  92. 4.6L northstar transmission bellhousing bolts size
  93. 2008 Northstar timing chain sprocket
  94. 2002 Deville With Blown Head Gasket
  95. 1999 Deville engine cooling problems
  96. 2005 Deville engine ECU...
  97. seized oil drain plug - 2000 Deville
  98. Proper Zinc Levels for your Flat Tappet Caddy Engine
  99. 2003 DeVille Transmission Fluid Filler Cap - Where to Buy Replacement?
  100. Oil pressure light on at idle - oil filter discussion
  101. Barely running northstar-'99 STS
  102. 99 STS - Ran Into a Few Problems
  103. What year 4.6's are known for poor head bolts?
  104. Timing marks - 2005 Deville
  105. How to identify VIN 9 engine, out of car
  106. Northstar wine
  107. NorthStar swap into Buick LaCrosse?
  108. New member - 1994 ETC Northstar
  109. Crack in oil pan. JB Weld?
  110. A quick 'thank you'
  111. How I fixed my head gasket/overheating problems on my '99 Northstar
  112. 2001 DHS overheating and Knocking?
  113. So how much longer can I drive with the blown head gaskets?
  114. 99 Eldorado/Looking for reccommendations for Las Vegas Mechanic - head bolts
  115. '04 Deville Engine Oil Leaks
  116. Seville 1999 - engine removal from top
  117. Northstar Performance on Performance TV
  118. Radiator hose temps - 2005 Deville
  119. Northstar ICM signals, not generated when cranking
  120. Northstar leaking/consuming lots of oil
  121. Looking for an engine swap advice
  122. 2002 SLS Fuel Regulator, Vacuum or what?
  123. 40 Ft Lbs, 45 Horsepower from a tune - VIN Y Northstar, 97 Deville.
  124. who sells, other than the dealer: the head locator pins? 03522352
  125. Seville 99, ignition cables routing
  126. Oil pressure sensor too close to motor mount
  127. Northstar flat tappet cam followers - which years?
  128. New member question 1997 Deville head gasket ?
  129. 2005 4.6l Y vin into a 2006 DTS
  130. 2005 sts northstar engine
  131. 4.6 Northstar - top overhaul
  132. 4T80E Question...
  133. 98 deville p0741 p0171 p0174
  134. Problem with fit of oil pickup tube into new oil distribution plate.
  135. Suggestions for piston ring de-carb while heads are off during HG replacement.
  136. Main bearing bolt torquing. dry or oiled?
  137. I Need help were these brackets go
  138. Intermittent "battery not charging" red indicator
  139. Head Deck Surface - Second Opinion Needed
  140. LH2 on LS mounts with a T56?
  141. 1995 Eldorado pops on acceleration, no idea what it is.
  142. no water moving 1999 seville
  143. Main bolt seats - necessity to re-thread
  144. Headgaskets and VCC to TCC
  145. 2002 DHS blown head gasket removal without removing engine
  146. Blown Head Gasket Parts Advice - 2001 DTS
  147. Head gasket failure - how it become
  148. 05 Deville Timing chain guide failure and gray oil
  149. 1999 Northstar head gasket sets - price on ebay
  150. 1999 Northstar head bolt thread repair questions
  151. 2004 SRX Idler pulley ripped out of block
  152. 1995 Eldorado hesitates a little on acceleration between 1500-2000 rpm
  153. Re-ring kit - what size to choose?
  154. Oil manifold plate unorthodox treatment
  155. Overhauling - bolts?
  156. Crack or casting imperfection?
  157. Timing Chain Guide\Tensioner "Toppings" - how to call and where to buy?
  158. 1999 Seville overheats when going up long grades
  159. Seville 2003, Code P0300 right after changed upper radiator hose
  160. FPR Vacuum Hose ?
  161. Coolant system message
  162. 1997 Northstar Eldorado - possible blown head gasket
  163. Northstar timing
  164. A poser - differential diagnosis: blown head gasket or bad coil pack (or injector)
  165. Doing head gaskets in frame
  166. 2002 Northstar hearse overheat?
  167. Losing coolant, rough running @ start-up
  168. Considering a HG fix + a possible budget rebuild
  169. Cylinder #8 Misfire, changed plugs & coil, now what?
  170. Northstar FWD or RWD owner? You NEED to study this!
  171. Northstar engine and head gasket issues
  172. Preventative water pump replacement ??
  173. 2005 Deville - Remove and Install Fuel Injectors
  174. How to evaluate a northstar before buying?
  175. how do you remove steering coupling from steering gear and ABS modulator 99 Eldorado
  176. What company make a good head gasket for the northstar engine
  177. 2002 DTS - A/C compressor clutch cycle?
  178. Which HG repair is the best GM time sert,NS300L Insert or SureGrip Head Stud Kit
  179. need information how to best and easy way to remove a engine for a 99 Eldorado
  180. 1995 4t80e output shaft came out with axle shaft?
  181. 1996 El Dorado engine knocking?
  182. My 2001 Deville's Engine is Overheating
  183. Did Cadillac fix the head bolt problem in 2005 northstar ?
  184. 4.6 Swap into 68 Deville
  185. 04 Deville - 1,3,5,7 misfiring
  186. 1996 - 2003 Northstar head bolt torque specs
  187. 2000 STS head bolt torque specs question and head photos
  188. 95 STS Northstar idles up and down pretty much all the time
  189. rear ignition cassette removal-2001
  190. Aurora L47 V8
  191. 4T80E Shift Kits?
  192. Northstar pre oil change cleaners / additives
  193. 4T80E Transmission will not engage (in any gear front or back)
  194. 2000 Eldorado Engine Noise
  195. Keeping 1st gear with T/C off on the 96-99 Northstars - Tuning update
  196. water pump removal
  197. Rear main seal question...
  198. NorthStar Top End Teardown in Car - Cylinder Head Insert Repair
  199. 1997 Northstar insert and timing help
  200. Check Engine Light won't go off - 2003 DTS
  201. Cylinder Compression
  202. P0300 - Misfires on cyls 1 and 2
  203. What's this gasket?
  204. torx size for studs studs
  205. 2000 Deville Now Burning A Quart Every 300 Miles Now What? 115k
  206. Odd possible HG failure - 2003 STS
  207. Check Coolant Level
  208. 1997 Deville Possible topend, maybe full rebuild!
  209. 2001 SLS Ignition Coil Packs
  210. Possible Head Gasket 2001 Deville
  211. 01 Overheating; suspect coolant flow Please advise.
  212. 2005 Deville Head Gasket
  213. Northstar thermostat housing leaks, possible overheating
  214. 2009 DTS 100,000 miles - burning oil smell
  215. Northstar timing chain tensioners
  216. 2000 DeVille - high temps, possible head gasket leak
  217. Hello all, I have an intake question
  218. valve roller rockers-2001
  219. Northstar block question
  220. Snakes
  221. Freeze Plugs
  222. Oil filer adapter o rings and oil level tube o ring
  223. LD8 vs LH2/LC3 Exhaust Flange
  224. Another Overheating question
  225. Cleaning Carbon Deposits on pistons/rings ??????
  226. 06 Luceren Northstar V8 overheating and heater core coolant leakage?
  227. P0140 after New Sensor
  228. freeze spray for guide pin removal
  229. Swap question
  230. Swapping a Y for a 9-2001
  231. Engines - 2001 SLS with cracked block
  232. 2000 STS wont start
  233. I cant get the front valve cover off a 1999 Seville Northstar
  234. trouble code P0175
  235. 2000 deville won't start due to gears
  236. 06 SRX N* VVT Part identification
  237. Building a 1996 Northstar base Deville engine
  238. 2005 Northstar Lifters Ticking
  239. Recommended spark plug for 2001 Northstar
  240. Rad Fan Diagnosis - 1997 SLS
  241. Deville cooling fans problem
  242. Best gasket/bolt kit for 1999 Northstar head job
  243. Cadillac Deville Engine swap 95 in a 98
  244. 99 Deville 4.6 Northstar - left intake camshaft replace
  245. 2000 STS with P0300 #4 - misfire - valvetrain damage
  246. 2002 Deville - P 0741 alone, long trip ?
  247. Head Gasket dilemma -- 1999 Deville
  248. 02 deville overheated and now starts rough for about 10-20 seconds
  249. Pros and Cons Of A Northstar
  250. Chevron Techron Usage