: Northstar Engines and System Technical Discussion



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  1. bad fuel economy, rough(er) idle, need help!
  2. What gets relearned after battery disconnect?
  3. idle speed control
  4. 99 Deville Hesitation during Acceleration
  5. strange noise please help
  6. What happen to my overdrive???????
  7. Northstar Overheating!!! HELP
  8. After Timesert HG Repair Service Schedule?
  9. Top engine compartment struts
  10. '01 Deville with Half case leak, any temp fixes/band-aides?
  11. crankshaft sensor location ?
  12. Anyone heard of this?
  13. Are All Xlr's The New Style Closed Deck?
  14. MAF Translator
  15. Are A & B Crankshaft Position Sensors the same sensor??
  16. How much bubbling in surge tank indicates bad head gasket?
  17. Sick Baby
  18. Jet Power Flow Mass Air Sensor
  19. Everything You ever Wanted To Know About Cooling System Sealant Tabs
  20. O2, IAT, MAF sensor reliability on 2000 N*?
  21. Another Successful Mod (albeit potentially destructive)
  22. Questions On Rebuilding a Northstar Engine
  23. eldorado1 (and others)...my brain is failing me...help!
  24. Kent-moore Inserts, Anyone Every Use Them?
  25. 1996 Eldorado Won't Start
  26. 93 STS Northstar wont start
  27. radiator hose sucking itself in after car cools off
  28. upper trans oil cooler hose leaking
  29. What to do with these? (headgasket help)
  30. Not Again
  31. How Much Coolant?!?!
  32. 99 STS Northstar and Trans axle Problem
  33. No access to PCM info via dashboard OBD?
  34. smoking engine after install
  35. Frenchy ask help for his cadillac sts
  36. Headgaskets And "time-serts"!?
  37. Rough runner when it rains. 93 n'star
  38. ~Cadillac Deville Concours 59,000 A DISASTER??~
  39. 93 Allante w/Northstar Tranny Issues
  40. What other engines fit a 1999 Cadillac sts?
  41. Best years for N* between 93 and 99
  42. Any possible options to fix this engine noise?
  43. P0171 to lean code?
  44. 98 Deville theft sytem problem??
  45. Leave no bolt behind - Transmission Case
  46. 2002 Deville HG Replacement
  47. 00 N* still rough idle after changing plenum, cleaning TB
  48. I broke a water pump pulley
  49. Catalytic Convertor Clogged
  50. OH no...another one!
  51. getting ready to start this hd job
  52. Looking for a 2000-2005 Deville/DHS
  53. Anyone Swapped a 4.4 SC Engine?
  54. power steering pressure hose
  55. Thinking of coming over to the N* camp....
  56. Main Bearing Cap Torque
  57. remote start diy <help please>
  58. Symptoms of broken motor mount (2000 STS) ??
  59. N* cams
  60. Check Gas Cap Code
  61. N* dress ups
  62. Fuel Cutoff For Z-rated Sts
  63. Possible Fuel issue?
  64. 2001 Deville thermostat
  65. Help!!!what Parts Do I Need For N*headgasket Replacements?
  66. Another overheater...
  67. Is it ok..........
  68. Engine oil level sensor leaking
  69. How to install Nitrous the correct way! I need input
  70. Are There any Hot Rodder's here?
  71. Lifter, Cam, Valve Issue? (Sounds like Chubby Ranger)
  72. going to attempt head gaskets
  73. 1993 Northstar Rough Idle
  74. check this out if you have had cooling system trouble ie headgaskets
  75. PCM 0101 code set on WOT
  76. 96 Cad DeVille Questions
  77. Need help on 98 cad seville sls
  78. cometic, felpro or gm oem! Head gasket survey.
  79. Thank You so much
  80. Help
  81. Look at these plugs
  82. Fi A/f Ratio
  83. N* Headgasket Replacement
  84. northstar eldorado swap
  85. new HG, coolant issues
  86. replaced hg, low oil pressure
  87. What else should I clean when replacing intake plenum?
  88. 94 STS N* Top End Oil leak
  89. 94 STS High HC at Idle
  90. Is this a cracked intake plenum? (see attached pics)
  91. spare parts after rebuild **HELP**
  92. New Bar's Leaks Product
  93. Newest Intake work...
  94. Headgaskets!
  95. Fuel pressure or pump problem? Need Help!
  96. northstar engine
  97. 2001 Seville dies out????
  98. My Head gasket job
  99. 2000 SLS uses 1qt oil every 500mi - Should I be worried???
  100. air filter
  101. Please help 1995 STS "Service Engine Soon" jumping out of gear?
  102. Northstar Rant
  103. A/C blowing warm air
  104. Sorry for the rant but early NS owners need to know
  105. sealant- case 1/2's
  106. 2000 N* Rough Idle in Seville STS
  107. 01 STS running rich
  108. Is car driveable with Blown HG?
  109. heating and a/c system please help
  110. clogged radiator?????
  111. Headgasket, or what?
  112. no spark
  113. how to replace motor mount on 97 deville northstar
  114. Which Northstar do I have?
  115. 94jN* What do I use for a sealant when I put the intake manifold back on?
  116. no spark
  117. Professionally Painted Northstar Engine Covers
  118. Reuse main bearings?
  119. Noise coming from LH head - valve?
  120. 94 N* Help white smoke out of exhaust
  121. Overheating mystery
  122. New Coolant
  123. PLEASE HELP!!! Stalling when warm and smoking alternator
  124. Car lunges forward when tapping gas
  125. 93, 94 or 95 Eldo worth buying?
  126. Does 2006 Dts Engines Have Headgasket Problems Also?
  127. misc questions
  128. northstar gone bad....AHHHHH
  129. camshaft sensor
  130. Replacing Cylinder Heads Project
  131. newest member of the headgasket club
  132. 1999 northstar warped heads
  133. Northstar engine swap
  134. p0340 camshaft position sensor
  135. northstar in a monte carlo
  136. could this be anything else?
  137. for under 8k would anybody buy a NS Caddy?
  138. No spark,Please help !!
  139. N* Water Pump...I think
  140. 4.6L Northstar CMP tests and replacement ?
  141. 4t80-e
  142. Random Misfire P0300 code
  143. Head Gasket Failure Signs
  144. Which Head Gasket to use?
  145. Swap LD8 in for a L37
  146. Demise of the Northstar
  147. head gasket
  148. GM service manual dvd
  149. The Ultimate FWD Cadillac Northstar Build
  150. No pulses on the injector wires?
  151. Need a connecting rod nut
  152. are coils interchangible from front to rear?
  153. 99" Sts, Rough Idle When Cold. Help!!!
  154. Overheating after new headgasket
  155. Engine running at higher then normal RPM`s
  156. Replacing starter-port intake?
  157. is this normal?
  158. How soon do you replace oil pan gasket?
  159. Torque Multiplier Upgrade ??????? hmmm
  160. mpg and oil consumption 00 dts
  161. 2000 N* Cracked Block & Questions
  162. Tranny Bolts
  163. ICM location anyone- need help!
  164. P0107 then P0201 thru P0208 runs fine
  165. 586Hp Northstar, in a grand prix
  166. Looking for head gasket repair in Northwest, Indiana
  167. Brands Of Oil ?
  168. is it the head or intake manifold gasket?
  169. drive by wire nitrous kit ???
  170. 98 STS Engine Removal
  171. About Gas
  172. Shocks
  173. do you need premium gas in a 4.6 nothstar
  174. New Mods on Customers cars
  175. The smell of coolant~
  176. Setting Camshaft timing HELP!!!
  177. Northstar Over Heating After Waterpump Replacement
  178. how to clean out intake??
  179. emissions light comes on
  180. random miss at idle
  181. spark plugs and wires
  182. Idle
  183. Looking for some more power!
  184. What coolant do i use
  185. 97 Seville Overheat Try This One
  186. northstar smoking engine
  187. Performance Programing 01 DTS
  188. misfire
  189. 2006 Dts Rough Idle On Morning Start Up?
  190. What Causes Heagaskets To Blow?
  191. Blown Engine
  192. Air ram cones
  193. northstar engine knock help!
  194. Help identify foreign object jamming intake valve open
  195. 01 Dts Rough Idle
  196. dangrieco
  197. Spark plugs ?
  198. changing the governor
  199. Delaney Power Extractor Engine
  200. 94 cadillac sts ECM install
  201. Anyone here in Michigan
  202. Where to find new camshafts?
  203. Please don't flame the noob...codes and problem
  204. Real octane booster?
  205. Motor for 96 STS????
  206. What do you think of this? ECU Modifier
  207. Root Cause of Head gasket Failure and a Fix?
  208. Wont start when its cold
  209. Cadillac sts '94 problem
  210. 1995 STS sudden problem
  211. Oil burning TSB.. I know this has been talked about before
  212. Oil Under The Beauty Cover
  213. 97 STS Starting after dead battery
  214. Can you run your car with water?
  215. New to the site, wondering about repairs
  216. Recommndations for N* Tech in Boston/RI Area?
  217. Oil pressure light
  218. Plz Listen 2 My story Need Help ASAP
  219. Timing and Octane....I searched.
  220. Head Gasket replacement 97STS
  221. is it worth it?.
  222. Head Gaskets Failure 97 STS
  223. White smoke in the exhaust which clears after idling 5 minutes
  224. 2002 DTS trouble
  225. Heater Fan
  226. northstar poor mileage
  227. 2001 STS engine knock
  228. N* Camshaft Removal: Special Tools Required?
  229. Block Sealer??
  230. After Market Code Scanner
  231. 2005 STS 3.6L Engine Oil Sensors
  232. Ok Someone Please Help My 97 Deville Not Running.............
  233. best Seville STS to buy ???
  234. Strange Call
  235. Transmission Force Motor 1994 Eodorado - Can it be done without pulling the trans?
  236. No 24x Refrence Signal
  237. OBD II Manual
  238. 2002 sts engine codes
  239. Noise on Startup when Cold
  240. question about trans gasket
  241. 98 Eldo Rebuilt Motor
  242. Pulling camshaft cover - can it be done w/out dropping engine?
  243. Thermostat
  244. 97 Deville w/ N* Battery(?) problems
  245. head gasket blown replacing motor
  246. AGAP Northstar reman engine NIGHTMARE
  247. Oil leak 2000 Deville
  248. 96 Eldorado ABS and Traction Control TRBL
  249. intermittent Bubbling noise in dashboard.. Any ideas?
  250. gasket questions on the northstar