: Northstar Engines and System Technical Discussion



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  1. Head Gasket?
  2. Investors needed. Big time.
  3. thermostat housing gasket? 99 sts
  4. New England area Northstar mechanics? (Head Gaskets)
  5. 6 oil leaks; gaskets replaced now intake plenum boot replaced..
  6. That's a lot of smoke! (exhaust)
  7. Mobile 1 Clean High Mileage
  8. Chocolate Milk in the oilpan
  9. Heater Core Inlet Connector O-Ring Leak
  10. Breakthrough for anyone with bad exhaust cams
  11. 96 Aurora 4.0
  12. Idle Too Low P0506 New Throttle Body?
  13. Northstar mechanic on Long Island?
  14. 4t80E shift solenoid part #
  15. B0149
  16. Code P119
  17. HeadGasket Repaired - cost $1500 - but more problems?...
  18. 95 Eldo headgaskets?
  19. Only overheats when the AC or the heat is on....
  20. 06+ STS Northstar ECM repin to 07-08, new carrer and trans install
  21. Aftermarket Temp. Gauge
  22. Coolant Supply Line
  23. Idles rough after being started in the morning
  24. Best way to clean the engine bay?
  25. 2001 Cadillac DTS Can't get up to speed, power loss, studdering, See Video
  26. Tricky Coolant Leak
  27. Coming back home
  28. 2000 DHS exhaust smoking and running poor
  29. 4 Engine Questions
  30. Is this guy being honest with me? video of a SEIZED ENGINE!!!
  31. Any thoughts on this...
  32. tap for time serts
  33. Just bought a 98 Deville, was overheating, am I paranoid?
  34. 208 at 40+ 212 at <40
  35. low oil pressure
  36. Batman's Northstar
  37. Another Wont crank issue
  38. Woohoo...Head gasket repair is done
  39. 1998 Deville acceleration slip
  40. Steering joint bolt
  41. My bone stock '98 STS pulled a 14.95 in the 1/4
  42. Weird Noise
  43. Heartland High Mileage Oil Changer Review
  44. 95 sls n* solenoid clicking
  45. Interesting find
  46. Valve cover bolts???
  47. Timing mark clarification
  48. Engine in the car repair... how many gaskets?
  49. Front hydraulic motor mount
  50. I can't get the CV joint to separate from the Trans
  51. 1993 Caddillac Eldorado - Timing Chain Issue
  52. Stud Kit Success!!
  53. Ways to increase performance?
  54. Radiator leaks and engine runs rough, no codes
  55. Ethanol Blends
  56. 98 Eldorado Starting Problems
  57. Problems removing head dowels
  58. Another visit to the track
  59. 95 vs 99 Northstar
  60. Tuning up the engine.
  61. Head Gasket Repair At Your Location!
  62. Head Gasket Paranoia
  63. catalyst converter replaced
  64. 93 STS Lots of smoke after fillup
  65. Exact oil filter wrench for 1996 Seville SLS
  66. new northstar
  67. Super Noob needs help overheating
  68. Nitrous Help: 01 DTS
  69. Head gasket removal, best practices
  70. 01 deville o2's locations?
  71. Head stud kit
  72. Documenting a swap: N* 4.6 / 97 STS
  73. 2005 DTS Twin Turbo project??
  74. No pcm data
  75. No pcm data?
  76. WIll a 98 vin 9 motor go into a 94 STS
  77. another newbie HG question
  78. NEW - 2002 Head Gasket Failure - Best Fix...
  79. Failed Smog Emissions Northstar
  80. What could it be?
  81. Exchange fluids how often?
  82. Tuning thread. Disappointed, but I understand.
  83. looking to buy a Caddy
  84. AC Delco platinum plug gap settings for N*
  85. how do i get my car to northstar preformance, uh cheaply?
  86. Engine 'misses' at stoplights
  87. where to get my head gasket repaired?
  88. Engine Shaking
  89. 4.6 Prevention and maintenance for longer life IE head gaskets.
  90. How to properly switch from red to green in a 2000 STS
  91. Water Pump Issue
  92. Lucas Oil Stabilizer
  93. Rough idle and low speed chug
  94. barS headgasket repair, has anyone tried it?
  95. Secondary Air Injection Check Valve... Bent?
  96. 2000 STS motor mount help?
  97. Oil pressure dummy light flickers...
  98. Head Bolts...
  99. Slight stumble, no codes
  100. 97 Deville wont start in the morning
  101. Stud Kit Help
  102. A kitten caused my Serpentine Belt to come off
  103. Check Coolant Level
  104. Cleaning Heads and Block
  105. Over Heating... HELP!!!
  106. 2001 deville rough idle
  107. engine grounds
  108. manifold blowoff
  109. sealant for blown heads?
  110. 1994 STS Overheating (I think)...
  111. Block Identification Numbers
  112. Snapping noise when coming to a stop..Answered Finally!!!
  113. Overheating Eldorado Help
  114. need some help
  115. 05' STS. Little help with P0102 please
  116. 2000 DTS P0300 code
  117. Head gasket repair
  118. P041 1994 deville concours
  119. Quick Oil Question
  120. rough idle, no codes, rough start
  121. coolant leak
  122. STS Radiator Hose Replacement
  123. 95 Eldorado ETC - Cooling system
  124. power steering line: o-ring?
  125. broken bolt in oil pan
  126. Water pump & crossover gasket - $$$$
  127. Help Me Please
  128. Rad Cap PSI was wrong
  129. Coolant Leak. Where's it coming from?
  130. Water pump Purge line?
  131. 5w30 or 0w30
  132. Destroying a N* Engine
  133. N* engine removal - newbee
  134. 02 DHS overheating
  135. TCC Stuck Off
  136. No clue what to do. Northstar blues
  137. problem with map sensors
  138. 2001 caddy sts seville tranny
  139. What is going on with the car?
  140. Spark Plug Wires
  141. "Hush" or "Gasp" Before Expected Throttle Response
  142. my 93 ETC Eldorado N* has a question for you guys
  143. Which spark plugs to buy?
  144. Thoughts on Dex-Cool and Head Gaskets
  145. 2001 cadillac deville small hesitations
  146. Normal Operating Temperature?
  147. Intermittent starting issue 97Seville SLS
  148. Trouble finding exhaust leak 99 Deville Y motor
  149. Is 235 too hot for a N*star on hilly roads?
  150. Spark Plugs ACDELCO or somthign els ?
  151. Good mechanics to fix head gasket in Oceanside, California area
  152. rough idle, only when in gear and brake on
  153. The first head gasket failure - 1 out of around 90 or so
  154. Tranny problems?
  155. how to install serpentine belt on 98 concours
  156. engine swap
  157. Why high fuel pressure?
  158. 1997 Northstar low speed hesitation and noise
  159. 2001 DeVille DHS / North Star motor losing power
  160. Air-Dam / Belly Splash Guard importance on cooling your N*
  161. Make Your Own Damn Motor Mount
  162. cooling fans inop p01660
  163. Hard shifting 1-2 Help!
  164. Fabricated Torque Strut for the 2000+ Northstar
  165. Horrible Engine Bucking 93 N* Allante
  166. 1998 Seville STS Performance Engine Build - STAGE I
  167. My pulley melted
  168. 01 Deville issues, no codes, no check engine light
  169. '96 Deville Coolant Change
  170. Overheating
  171. White smoke after changing starter (by removing intake manifold)
  172. No current codes but...
  173. N* Powered Camaro
  174. Strange coolant/heat issue 99 STS
  175. 1998 STS engine full of mystery sludge?!
  176. Rough idle-stumble on accel
  177. 95 Eldorado 4.6L Engine stalls
  178. Oil in intake manifold 4.6 1993
  179. 98 Deville Concours Preformance Exhaust???
  180. Engine year compatibility
  181. Sucessful Northstar head gasket repair in a bottle
  182. PCM 09354896 code DCHJ
  183. 1997 4.6 eldorado up hill over heats
  184. fuel injector ohms
  185. 93 sts fuel rail removal tools
  186. Air ride compressor
  187. Overheating??
  188. Codes P0122 and P1122...
  189. Motor mount replaced!! WTF!!!!!
  190. 1996 Seville STS O2 Sensor REMOVAL. CAN"T GET TO IT
  191. 96 Seville where's the 02 Oxygen Sensor Location?? PLEASE HELP WONT PASS EMISSIONS!!!
  192. Long road trips good for the Northstar?
  193. headgaskets a 2nd time?
  194. 97 eldorado w/180,000 miles, should i upgrade to a preformance coil?
  195. 94 eldorado 4.6 - no codes - stumbling/chugging - about to give up
  196. Car not turning over
  197. Codes 340 and 1016 + Fixed A.I.R. with new coil cartridge?
  198. Transmission issue
  199. spark plugs
  200. Yearly engine oil changes really necessary?
  201. Overheating problem
  202. maybe you all know more
  203. What Oil For Northstar Cams and Flat Tappets?
  204. 93 seville sts fuel rail
  205. rear main seal
  206. 93-99 Camshaft picture needed
  207. Seville 03 shaking problems after tune-up.
  208. is it the head gasket again?
  209. Problems with starting the engine
  210. Adding an Electric water Pump 95 Northstar
  211. 1995 northstar for sale *LOCKED*
  212. After WOT Car smells strong of sulfur , rotten eggs
  213. Dexool Questions
  214. 2002 caddy deville
  215. Limp. Mode help
  216. Lifter starting to tap and needs replacing,
  217. Reg oil or Synthetic oil
  218. Coolant Shooting Out
  219. Random light miss during constant hwy cruising
  220. Which PCM??
  221. Fuel Injector O-Rings- Where go?
  222. air in cooling system
  223. Best oil and spark plugs for the northstar 4.6L
  224. Enginge doesn't crank
  225. Help!! Engine idling with hiccups
  226. Tach
  227. the day has come: headgasket
  228. '99 Seville STS
  229. What are the differences between 99> and 00< motors?
  230. Why do these motors break rods?
  231. pretty betty deville
  232. how reliable is northstars limp mode
  233. 1999 deville almost overheating
  234. 3.71 ever better with smaller wheels?
  235. Refrigerant pressure
  236. Minor Coolant Leak
  237. 93 sts misfires, stalls, very rough idle, looking for cause
  238. Any thoughts? Code P1350 p1375
  239. Injector spec for a Y2000 N*
  240. oil cooler
  241. TPS issue: Codes P0122, P1122. Help!
  242. Need Help Installing Air Filter ?
  243. 2002 Deville coolant leak
  244. Blew the head gaskets replacing the motor
  245. 1997 deville stalling at idle
  246. bad headgasket
  247. N* running Hot, Real Hot
  248. 99 deville oil pump
  249. 2001 Northstar AIR Valve
  250. Hydraulic valve-lash adjustor evaluation?