: Northstar Engines and System Technical Discussion



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  1. This Is Not a Joke
  2. My Rough Idle Story, So Far...
  3. 02 SLS running rough after pulling air box silencer
  4. 97 SLS N* Overheating quickly
  5. '95 STS Stuck in 3rd Gear
  6. 98 Deville non-functional engine cooler fan
  7. Post up your NORTHSTAR GAS MILEAGE (CTY/HWY) PLZ!
  8. 300hp N* to a Base N*
  9. Added my 99 STS to the HeadGasket poll...
  10. ATTN: All Volant owners
  11. 93 octane + WOT = rattle?
  12. Drill Guide for Head Bolt Inserts
  13. Idle issue when cold
  14. 94 el dorado starter location
  15. 1-2 At 45 Now Instead Of 40?
  16. Northstar fuel rail redesign
  17. 95 Eldorado with disturbing sound...
  18. Deville 98 coolant
  19. Is this the beginning of the end for my STS?
  20. 1994 Deville con
  21. 01 Olds Aurora Question...
  22. Coolant overflow?
  23. Switching a 1998 Northstar with a 2005 ?
  24. What to do with my 2000 DTS?
  25. Oh
  26. Headgasket info?
  27. Blown Engine???
  28. Fuel Induction System Specs
  29. Car is over heating?
  30. '02 STS Drain Plug Issue
  31. Oil guzzling 2003 Deville Northstar V8
  32. Cracked Block, exterior, 1997 Northstar
  33. Coil Bank Problems
  34. balancer bolt
  35. 2000 DeVille Overheats
  36. sounds like harmonic balancer??
  37. Over heating
  38. MSD Plug wires
  39. Delphi/Packard vs Delco Plug Wires
  40. HG Failure, Round 2
  41. new fuel injector & upper engine cleaner
  42. Tranny Question
  43. Location of ALL o2 sensors
  44. Hey Guys
  45. 93 Eldorado Sport Coupe Vs Touring Coupe
  46. ac compressor problem???
  47. Combustion Leak Detection
  48. Po41 code set
  49. Porting the throttlebody
  50. Another 97 DeVille Overheating Issue
  51. Can '03 Seville display digital coolant temp reading?
  52. BARS Head Gasket Fix and Aux Fan control
  53. Whistling pressure relief on N* Intake Manifold???
  54. Who needs a Timesert kit- I have one!!
  55. where does this thing go (headgasket job)
  56. Hard Start
  57. any tips on removing coolant crossover?
  58. 1996 Deville Intake??
  59. Performing "block" test from Napa
  60. Service A/c and A/C compressor off
  61. draining trans fluid 4T80E
  62. no start lots of codes network ?
  63. engine swap
  64. 1993 to 1999 Cam Wear Fix
  65. 94 Eldo ETC
  66. Need diagnosis - 98 STS overheating
  67. Professional Coolant Flush
  68. 4T80-E transaxle
  69. Oil Adapter housing Problems :(
  70. Head gasket, possibly cracked block...
  71. etanol blend, what does it do to the n?
  72. Loaded '03 STS 103k great shape - Dealer says it's the head gaskets.
  73. Problem with my Fast Chip
  74. Is there a Northstar FAQ section?
  75. 97 sts auto radio shut off
  76. Severe engine miss at idle-dirty gas in filter
  77. How Do I Change the ignition switch
  78. Cadillac De Ville 1999 OverHeat
  79. NO START, but the battery is good
  80. STS "Limited to 90 Miles an Hour" Message
  81. 1997 STS Ghostly Noise from Vacuum Leak?
  82. 4T80E bellhousing: starter?
  83. Blown Head Gasket On A 97 Deville
  84. North Star & Transmission Issues
  85. Head Gaskets
  86. Oil Housing
  87. North Star & Transmission Issues
  88. 4t80e problems
  89. Reverse problem someone please help me please
  90. AC & Intake
  91. '99 El Dorado Trans Question 2
  92. '99 El Dorado Tranaxle Modulator Location and Replacement
  93. Compression and oil consumption
  94. Anyone sells lower temperature thermostats?
  95. 1996 Deville Trouble Codes--Help Me!
  96. Aftermarket coils
  97. 05 STS V8 pcm reprogramming?
  98. '99 El Dorado White Smoke 70 mph and up
  99. Decel Stall
  100. no crank
  101. Who wants headers?!?!
  102. replacing oil pressure sending unit
  103. Northstar intermittent heating problem
  104. Compressed Natural Gas
  105. Proper A/C Recharge Pressure Spec?
  106. Head Bolt Torque
  107. what to do with a code
  108. Need headgaskets replaced...Twin Cities, MN area...
  109. Help finding exterior ground location IC Module
  110. Ran out of gas - Now will not start
  111. Hard Starting N* And Unknown Code
  112. Just wanted to check on some codes P0171 and P0134
  113. Ignition Miss - '98 DeVille
  114. Oil Testing, laboratories, and Additives
  115. What timesert kit is this referencing?
  116. Block Test Confirms!...or ?
  117. 2000 Deville with Denso plugs
  118. VIN or other link to body stamped on block?
  119. Prevent head gasket failure
  120. 2000 DeVille Northstar Problem
  121. Previously Timeserted block?
  122. turbo charging a Northstar
  123. p1350 & p1375 codes?
  124. bad fuel economy, rough(er) idle, need help!
  125. What gets relearned after battery disconnect?
  126. idle speed control
  127. 99 Deville Hesitation during Acceleration
  128. strange noise please help
  129. What happen to my overdrive???????
  130. Northstar Overheating!!! HELP
  131. After Timesert HG Repair Service Schedule?
  132. Top engine compartment struts
  133. '01 Deville with Half case leak, any temp fixes/band-aides?
  134. crankshaft sensor location ?
  135. Anyone heard of this?
  136. Are All Xlr's The New Style Closed Deck?
  137. MAF Translator
  138. Are A & B Crankshaft Position Sensors the same sensor??
  139. How much bubbling in surge tank indicates bad head gasket?
  140. Sick Baby
  141. Jet Power Flow Mass Air Sensor
  142. Everything You ever Wanted To Know About Cooling System Sealant Tabs
  143. O2, IAT, MAF sensor reliability on 2000 N*?
  144. Another Successful Mod (albeit potentially destructive)
  145. Questions On Rebuilding a Northstar Engine
  146. eldorado1 (and others)...my brain is failing me...help!
  147. Kent-moore Inserts, Anyone Every Use Them?
  148. 1996 Eldorado Won't Start
  149. 93 STS Northstar wont start
  150. radiator hose sucking itself in after car cools off
  151. upper trans oil cooler hose leaking
  152. What to do with these? (headgasket help)
  153. Not Again
  154. How Much Coolant?!?!
  155. 99 STS Northstar and Trans axle Problem
  156. No access to PCM info via dashboard OBD?
  157. smoking engine after install
  158. Frenchy ask help for his cadillac sts
  159. Headgaskets And "time-serts"!?
  160. Rough runner when it rains. 93 n'star
  161. ~Cadillac Deville Concours 59,000 A DISASTER??~
  162. 93 Allante w/Northstar Tranny Issues
  163. What other engines fit a 1999 Cadillac sts?
  164. Best years for N* between 93 and 99
  165. Any possible options to fix this engine noise?
  166. P0171 to lean code?
  167. 98 Deville theft sytem problem??
  168. Leave no bolt behind - Transmission Case
  169. 2002 Deville HG Replacement
  170. 00 N* still rough idle after changing plenum, cleaning TB
  171. I broke a water pump pulley
  172. Catalytic Convertor Clogged
  173. OH no...another one!
  174. getting ready to start this hd job
  175. Looking for a 2000-2005 Deville/DHS
  176. Anyone Swapped a 4.4 SC Engine?
  177. power steering pressure hose
  178. Thinking of coming over to the N* camp....
  179. Main Bearing Cap Torque
  180. remote start diy <help please>
  181. Symptoms of broken motor mount (2000 STS) ??
  182. N* cams
  183. Check Gas Cap Code
  184. N* dress ups
  185. Fuel Cutoff For Z-rated Sts
  186. Possible Fuel issue?
  187. 2001 Deville thermostat
  188. Help!!!what Parts Do I Need For N*headgasket Replacements?
  189. Another overheater...
  190. Is it ok..........
  191. Engine oil level sensor leaking
  192. How to install Nitrous the correct way! I need input
  193. Are There any Hot Rodder's here?
  194. Lifter, Cam, Valve Issue? (Sounds like Chubby Ranger)
  195. going to attempt head gaskets
  196. 1993 Northstar Rough Idle
  197. check this out if you have had cooling system trouble ie headgaskets
  198. PCM 0101 code set on WOT
  199. 96 Cad DeVille Questions
  200. Need help on 98 cad seville sls
  201. cometic, felpro or gm oem! Head gasket survey.
  202. Thank You so much
  203. Help
  204. Look at these plugs
  205. Fi A/f Ratio
  206. N* Headgasket Replacement
  207. northstar eldorado swap
  208. new HG, coolant issues
  209. replaced hg, low oil pressure
  210. What else should I clean when replacing intake plenum?
  211. 94 STS N* Top End Oil leak
  212. 94 STS High HC at Idle
  213. Is this a cracked intake plenum? (see attached pics)
  214. spare parts after rebuild **HELP**
  215. New Bar's Leaks Product
  216. Newest Intake work...
  217. Headgaskets!
  218. Fuel pressure or pump problem? Need Help!
  219. northstar engine
  220. 2001 Seville dies out????
  221. My Head gasket job
  222. 2000 SLS uses 1qt oil every 500mi - Should I be worried???
  223. air filter
  224. Please help 1995 STS "Service Engine Soon" jumping out of gear?
  225. Northstar Rant
  226. A/C blowing warm air
  227. Sorry for the rant but early NS owners need to know
  228. sealant- case 1/2's
  229. 2000 N* Rough Idle in Seville STS
  230. 01 STS running rich
  231. Is car driveable with Blown HG?
  232. heating and a/c system please help
  233. clogged radiator?????
  234. Headgasket, or what?
  235. no spark
  236. how to replace motor mount on 97 deville northstar
  237. Which Northstar do I have?
  238. 94jN* What do I use for a sealant when I put the intake manifold back on?
  239. no spark
  240. Professionally Painted Northstar Engine Covers
  241. Reuse main bearings?
  242. Noise coming from LH head - valve?
  243. 94 N* Help white smoke out of exhaust
  244. Overheating mystery
  245. New Coolant
  246. PLEASE HELP!!! Stalling when warm and smoking alternator
  247. Car lunges forward when tapping gas
  248. 93, 94 or 95 Eldo worth buying?
  249. Does 2006 Dts Engines Have Headgasket Problems Also?
  250. misc questions