: Northstar Engines and System Technical Discussion



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  1. Fuel pressure jumping up and down on my 1998 Eldorado
  2. Mystery klanking sound.. over 200K N*
  3. GUZZLING GAS!!! 2000 Deville...
  4. 96 Northstar Build
  5. Misfire - 2001 Deville
  6. To fix the Blown Head Gasket, how hard is it if DIY?
  7. Help-Broke Oil Pressure Switch wires while replaceing CKP's 03 Deville
  8. Piston detonation evidence - 1998 Northstar
  9. Coolant crossover
  10. Northstar V8 and 4T80E questions
  11. 2002 SLS Code P 0401
  12. DTS oil level and change oil soon messages
  13. Rough Idle After Retiming.
  14. Yet another oil question - mix SAE 30 with 10W-30 ?
  15. No acceleration... 2000 Deville
  16. Northstar Manual Transmission Possibility?
  17. Idling Trouble for 2004 Deville
  18. Timing chain issue, not lining up? stretched chain possibly?
  19. Rough idle/shuddering and misfires...2004 SRX Northstar
  20. Northstar oil flow diagram - oil in a head bolt hole
  21. Coolant Temperature Problem
  22. SES Light - codes P0171 & P0174 - 2004 Seville
  23. Oil filter
  24. Used Northstar powertrains-FS
  25. production codes
  26. radiator cooling in cold temps
  27. Can anyone identify this?
  28. 2005 Northstar Knock on Start Up
  29. Swap engine from 2006-2007 into 2000 DTS ?
  30. 1994 Concours - head gasket replacement ?
  31. p0154/0151
  32. Engine cover removal
  33. Northstar Overheating Problem- Is it possible to live with or even avoid...?
  34. oops ruined a couple studs by accident
  35. Looking for a cartridge style rear main seal installer
  36. need a new motor!
  37. cataclean info
  38. Northstar Performance SLOW!!!!!!!!!!!!!!
  39. CODES of past ,present,future?
  40. CKP & OP Sensors AND Oil Filter Adapter Sealing, Servicing - Candidate 4 Sticky
  41. 1998 Eldorado failed HG
  42. need a little advice on what im looking at
  43. 97 Concours won't start now
  44. 1997 ETC engine performance upgrades
  45. 2006-2009 DTS Common Problems
  46. Engine randomly stalls when it rains and ran into another problem
  47. Pre-'05 4T80E Torque Converter Upgrade from viscous silicone to '05-later EC3?
  48. Looking for Northstar experts in or around Atlanta, GA
  49. Northstar water pump 2006-2011
  50. STP High mileage oil additive.
  51. Re: 2000+ Northstar Plenum Replacement steps
  52. NO oil war just info on dexos,please
  53. The Stumbling, The Codes and The Solution
  54. Engine knock after rebuild 2005 northstar
  55. 01 STS - Head Gasket - Perm or Temp/Quick Fix Solution
  56. Main Cap Bolt broken in block, UGHH.
  57. location of starter
  58. 1995 STS starter questions and seeking advice
  59. dog bones life span
  60. Engine parts cleaning during overhaul
  61. 2000 STS Northstar coolant problems
  62. Transaxle leaking
  63. Northstar head gasket problem
  64. 2000 Deville Code P0741 & P1860
  65. Motor Mounts
  66. Just bought a 99 Deville - question about the oil
  67. Buyer beware
  68. HOW TO: Change surge tank (and coolant) on a 96 VIN Y DeVille
  69. tapping sound
  70. hard shifting
  71. hard start, hi reving cadillac after storage
  72. oil leak. water pump camshaft
  73. 1998 caddy STS fixed wp pulleys & belt. More issues!!!
  74. Northstar - any thoughts or advice ????
  75. More big props to joe
  76. Plenum Issue??? AIR system issue ???
  77. 1999 Deville PCM codes - can you tune it?
  78. Overheating Northstars and bleeder valves
  79. How do you find tdc on cylinder #1 using timing marks?
  80. Cadillac Deville 2000 plugs and boots
  81. 2000 STS code 9 swapping to 2001 Y code engine
  82. 1996 STS - P1406 DTC with bucking and hesitation
  83. Quick and Dirty 97 Deville HG Job
  84. Check engine light won't go away???
  85. How do I drain ALL the coolant?
  86. High Mileage engine oil question
  87. Northstar Head/Engine removal
  88. A question for the more experienced N* gear-heads on site. Gasket or rings?
  89. Torque Spec for ARP Studs in Northstar
  90. Unusual noises or am I crazy?
  91. Exhaust parts needed
  92. CF chips
  93. Oil percentage - OLM information
  94. False Overheating?
  95. Issues Removing Crank Pulley
  96. Having HG problems and ordered NORTHSTAR PERFORMANCE studs...
  97. help with removing engine from 97 deville
  98. Oil Drain plug seized...can you use an air impact to remove without damage?
  99. 97 Deville Won't Start
  100. 2003 STS Idle/MAF/Coolant temp issues/Driving itself
  101. smokey the bandit!
  102. Engine misfire at certain times of the day - 2003 STS
  103. Can I use regular torque numbers on my cylinder heads?
  104. Concerns with my 1997 Northstar Engine
  105. 99 Deville Concours with cracked block!
  106. heater tube connection leak
  107. How To Remove Heater Core Hoses ? - 1997 Deville
  108. Northstar rev limiter
  109. New Owner 93 Eldorado pic. ? about HG issues in the early Northstars
  110. Is this the worst rusty engine you have seen?
  111. small coolant drip where sensor mounts
  112. Best way to flush cooling system
  113. For those that wish to "plug in & play"....late 90's N* crate engine
  114. 4.0 Northstar Performance Upgrade
  115. Seeking N* help in VA.....
  116. 98 Deville D'Elegance Stays At 222 F
  117. 1998 Eldorado - DexCool mix
  118. Size of hose used to connect heater line tubing
  119. 99DeVille_NrthSt*r's Project Thread
  120. 97 Deville Concours - Rough Starting
  121. Top pullers, I need help with a bolt
  122. 99 DeVille Electrical Harness
  123. Northstar Performance - Cylinder Head Studs. Stock Issues Resolved.
  124. 96 deville crossover gasket
  125. The best sealant for the oil pan gasket
  126. Vacuum Leak after WOT (P0101) - 2003 STS
  127. Does anyone know a good Cadillac mechanic in the NYC area
  128. Great deal on Rear Main Seal installer... but better hurry!
  129. Head Gasket Kit Verification
  130. Is it worth it?
  131. Results of coolant in oil
  132. 2000 Deville shakes at Idle, No DTC's
  133. Engine block cracked - Northstar Performance, where are you ?
  134. Cradle swapping possibilities
  135. Non Production VVT Northstar
  136. Jake Northstar Performance - stud problems
  137. Update on remanufactured Northstar Performance engine. 1 year later
  138. Head Gasket Questions
  139. Another overheating northstar....
  140. Northstar interesting stuff....
  141. '00 Deville sat for year. Coolant, Battery, Misfire, Brake fluid problems HELP
  142. Northstar Water Pump Housing Replacment
  143. my 1995 Cadillac Eldorado Overheating
  144. Seafoam - do you use it?
  145. Another N* Oil Pump question
  146. 2005 DTS Head gasket still a problem?
  147. Gforce performance "chip" ?
  148. SureGrip studded Eldo for sale?!!
  149. I'm relocating,,,,new complaints section....
  150. Remote key fob
  151. oil manifold question
  152. How do you clean ring grooves on pistons?
  153. Video. For those who want to see CNC machining in action.
  154. Plugs - Spark plugs for a Northstar ??
  155. Want To Buy N* stud tool kit
  156. What happened? Stored 1996 Deville engine knock
  157. Northstar head gasket repair
  158. WOT problem and P0300 - 2000 Eldorado
  159. Marks Turbocharged 99 STS
  160. water pump leak after replacing pump/seal
  161. Missing shield in cam cover?
  162. tight northstar cam chain
  163. front motor mounts
  164. northstar studs
  165. 2000 Deville - high pitched whistle
  166. 99 Deville HG job 4-2012
  167. I have a set of studs available if someone needs them thanks to my previous thread
  168. DIY Northstar Head Gasket / Crankcase Leak Repair
  169. 1997 Seville temperature problems
  170. Don't Wait More Than 120 days
  171. How to tell if head gaskets have been done before?
  172. Need top compression ring 98 N*....ugghhh
  173. 18mm Northstar Crankbolt needed
  174. 98 Eldorado replacing Engine Torque Mounts
  175. Troubleshooting help
  176. New Northstar Crate Engine
  177. Valve stem seal tool?
  178. Code P070 with stalling and surging-TPS or ISC?
  179. Huge thanks to Joe at Midwest Cadillac Repair
  180. Factory air intake question
  181. Bent pushrod - valvetrain noise ?
  182. '01 DTS Misfire.
  183. Thread size for Jake's studs?
  184. Drive Train Hum & No Overdrive
  185. Towing in third gear
  186. 2004 Deville PCM
  187. 01 Deville OverHeating Issue
  188. Please help diagnose my cooling system problem
  189. Overheating
  190. Is there an alternate way to lock the flywheel?
  191. northstar stud kit
  192. What engines are compatible with 2000 seville sts.... Coil to spark plug type.....
  193. Coolant Reservoir Overflow Line
  194. N* Upper to Lower block half sealing procedure.
  195. To re-seal or not?
  196. How do you SAFELY clean the valve covers?
  197. 98 ETC Head Gasket project started today...
  198. 2002 Eldorado ETC Head Gasket Project
  199. 97 N* Crank Pulley / Oil Pump Torque setting
  200. WP cam price
  201. 2001 Deville VIN Y - head gasket repair on Long Island ?
  202. Anyone want to compare MAF readings?
  203. Wheres Jake? We need studs and engines !!!
  204. serp belt
  205. Question about the Northstar PCM
  206. 96 Sedan De Ville V8 Northstar Over Heating
  207. po 300, po 507 need help asap!!
  208. 1997 STS N* connecting rod stamped number
  209. Is there an on-line breakdown of N* engine parts with GM part numbers?
  210. Torque specs on fasteners - torque angle?
  211. Northstar headbolt spacing/ pattern
  212. 95 eldorado 8th letter of vin is y
  213. Recently purchaced 2003 Cadillac Dev
  214. engine swap for a 2000 dts to a 2003 devell can it work i
  215. Jake, I REALLY, REALLY want to give you some money!
  216. Saga of a naive Head Gasket repair
  217. Cracked block!!!!
  218. What causes a headgasket failure?
  219. Spark advance/knock - What is tolerance?
  220. Towing with 02 Deville
  221. Northstar Temp sensor & Lock up converter ?'s
  222. P119 and p080
  223. Another (slightly different) Northstar oil consumption question.....
  224. holley injector harness
  225. Northstar oil pump failure
  226. 4.6 Rod Clearance
  227. Thank You
  228. Scratched Wall
  229. 4T80E Electronically controlled torque converter clutch
  230. Do The 2006 and newer DTS Northstars have the same headgasket issues?
  231. Feels like a miss?
  232. Need some advice for Northstar car purchase...
  233. need help with rough running northstsar
  234. '03 DeVille - Slight shudder under initial acceleration
  235. how can i check if head gasket leaks
  236. 1994 Deville Concours Ignition Control Module Replacement
  237. Get it while you can..........
  238. Backfiring issues
  239. Rear main seal install tool confusion
  240. surges/sputters while driving, but idles perfectly fine?
  241. Code P041 and Code P025 in 1994 Deville Concours
  242. Northstar 4.6 Overheating
  243. Differences of studs vs. Timeserts
  244. 94 deville concours northstar catalytic converter redhot and stalls
  245. dipstick level, which side to believe?
  246. 2002 Eldorado coolant flush what kind?
  247. Heated Seat Issue..Please Help!
  248. Running on 4 Cylinders..not in Overheat mode
  249. 2002 Deville, White Smoke when Ideling
  250. 1999 Deville w/ Northstar coolant issue