: Northstar Engines and System Technical Discussion



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