: Northstar Engines and System Technical Discussion



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  1. thermostat housing gasket? 99 sts
  2. New England area Northstar mechanics? (Head Gaskets)
  3. 6 oil leaks; gaskets replaced now intake plenum boot replaced..
  4. That's a lot of smoke! (exhaust)
  5. Mobile 1 Clean High Mileage
  6. Chocolate Milk in the oilpan
  7. Heater Core Inlet Connector O-Ring Leak
  8. Breakthrough for anyone with bad exhaust cams
  9. 96 Aurora 4.0
  10. Idle Too Low P0506 New Throttle Body?
  11. Northstar mechanic on Long Island?
  12. 4t80E shift solenoid part #
  13. B0149
  14. Code P119
  15. HeadGasket Repaired - cost $1500 - but more problems?...
  16. 95 Eldo headgaskets?
  17. Only overheats when the AC or the heat is on....
  18. 06+ STS Northstar ECM repin to 07-08, new carrer and trans install
  19. Aftermarket Temp. Gauge
  20. Coolant Supply Line
  21. Idles rough after being started in the morning
  22. Best way to clean the engine bay?
  23. 2001 Cadillac DTS Can't get up to speed, power loss, studdering, See Video
  24. Tricky Coolant Leak
  25. Coming back home
  26. 2000 DHS exhaust smoking and running poor
  27. 4 Engine Questions
  28. Is this guy being honest with me? video of a SEIZED ENGINE!!!
  29. Any thoughts on this...
  30. tap for time serts
  31. Just bought a 98 Deville, was overheating, am I paranoid?
  32. 208 at 40+ 212 at <40
  33. low oil pressure
  34. Batman's Northstar
  35. Another Wont crank issue
  36. Woohoo...Head gasket repair is done
  37. 1998 Deville acceleration slip
  38. Steering joint bolt
  39. My bone stock '98 STS pulled a 14.95 in the 1/4
  40. Weird Noise
  41. Heartland High Mileage Oil Changer Review
  42. 95 sls n* solenoid clicking
  43. Interesting find
  44. Valve cover bolts???
  45. Timing mark clarification
  46. Engine in the car repair... how many gaskets?
  47. Front hydraulic motor mount
  48. I can't get the CV joint to separate from the Trans
  49. 1993 Caddillac Eldorado - Timing Chain Issue
  50. Stud Kit Success!!
  51. Ways to increase performance?
  52. Radiator leaks and engine runs rough, no codes
  53. Ethanol Blends
  54. 98 Eldorado Starting Problems
  55. Problems removing head dowels
  56. Another visit to the track
  57. 95 vs 99 Northstar
  58. Tuning up the engine.
  59. Head Gasket Repair At Your Location!
  60. Head Gasket Paranoia
  61. catalyst converter replaced
  62. 93 STS Lots of smoke after fillup
  63. Exact oil filter wrench for 1996 Seville SLS
  64. new northstar
  65. Super Noob needs help overheating
  66. Nitrous Help: 01 DTS
  67. Head gasket removal, best practices
  68. 01 deville o2's locations?
  69. Head stud kit
  70. Documenting a swap: N* 4.6 / 97 STS
  71. 2005 DTS Twin Turbo project??
  72. No pcm data
  73. No pcm data?
  74. WIll a 98 vin 9 motor go into a 94 STS
  75. another newbie HG question
  76. NEW - 2002 Head Gasket Failure - Best Fix...
  77. Failed Smog Emissions Northstar
  78. What could it be?
  79. Exchange fluids how often?
  80. Tuning thread. Disappointed, but I understand.
  81. looking to buy a Caddy
  82. AC Delco platinum plug gap settings for N*
  83. how do i get my car to northstar preformance, uh cheaply?
  84. Engine 'misses' at stoplights
  85. where to get my head gasket repaired?
  86. Engine Shaking
  87. 4.6 Prevention and maintenance for longer life IE head gaskets.
  88. How to properly switch from red to green in a 2000 STS
  89. Water Pump Issue
  90. Lucas Oil Stabilizer
  91. Rough idle and low speed chug
  92. barS headgasket repair, has anyone tried it?
  93. Secondary Air Injection Check Valve... Bent?
  94. 2000 STS motor mount help?
  95. Oil pressure dummy light flickers...
  96. Head Bolts...
  97. Slight stumble, no codes
  98. 97 Deville wont start in the morning
  99. Stud Kit Help
  100. A kitten caused my Serpentine Belt to come off
  101. Check Coolant Level
  102. Cleaning Heads and Block
  103. Over Heating... HELP!!!
  104. 2001 deville rough idle
  105. engine grounds
  106. manifold blowoff
  107. sealant for blown heads?
  108. 1994 STS Overheating (I think)...
  109. Block Identification Numbers
  110. Snapping noise when coming to a stop..Answered Finally!!!
  111. Overheating Eldorado Help
  112. need some help
  113. 05' STS. Little help with P0102 please
  114. 2000 DTS P0300 code
  115. Head gasket repair
  116. P041 1994 deville concours
  117. Quick Oil Question
  118. rough idle, no codes, rough start
  119. coolant leak
  120. STS Radiator Hose Replacement
  121. 95 Eldorado ETC - Cooling system
  122. power steering line: o-ring?
  123. broken bolt in oil pan
  124. Water pump & crossover gasket - $$$$
  125. Help Me Please
  126. Rad Cap PSI was wrong
  127. Coolant Leak. Where's it coming from?
  128. Water pump Purge line?
  129. 5w30 or 0w30
  130. Destroying a N* Engine
  131. N* engine removal - newbee
  132. 02 DHS overheating
  133. TCC Stuck Off
  134. No clue what to do. Northstar blues
  135. problem with map sensors
  136. 2001 caddy sts seville tranny
  137. What is going on with the car?
  138. Spark Plug Wires
  139. "Hush" or "Gasp" Before Expected Throttle Response
  140. my 93 ETC Eldorado N* has a question for you guys
  141. Which spark plugs to buy?
  142. Thoughts on Dex-Cool and Head Gaskets
  143. 2001 cadillac deville small hesitations
  144. Normal Operating Temperature?
  145. Intermittent starting issue 97Seville SLS
  146. Trouble finding exhaust leak 99 Deville Y motor
  147. Is 235 too hot for a N*star on hilly roads?
  148. Spark Plugs ACDELCO or somthign els ?
  149. Good mechanics to fix head gasket in Oceanside, California area
  150. rough idle, only when in gear and brake on
  151. The first head gasket failure - 1 out of around 90 or so
  152. Tranny problems?
  153. how to install serpentine belt on 98 concours
  154. engine swap
  155. Why high fuel pressure?
  156. 1997 Northstar low speed hesitation and noise
  157. 2001 DeVille DHS / North Star motor losing power
  158. Air-Dam / Belly Splash Guard importance on cooling your N*
  159. Make Your Own Damn Motor Mount
  160. cooling fans inop p01660
  161. Hard shifting 1-2 Help!
  162. Fabricated Torque Strut for the 2000+ Northstar
  163. Horrible Engine Bucking 93 N* Allante
  164. 1998 Seville STS Performance Engine Build - STAGE I
  165. My pulley melted
  166. 01 Deville issues, no codes, no check engine light
  167. '96 Deville Coolant Change
  168. Overheating
  169. White smoke after changing starter (by removing intake manifold)
  170. No current codes but...
  171. N* Powered Camaro
  172. Strange coolant/heat issue 99 STS
  173. 1998 STS engine full of mystery sludge?!
  174. Rough idle-stumble on accel
  175. 95 Eldorado 4.6L Engine stalls
  176. Oil in intake manifold 4.6 1993
  177. 98 Deville Concours Preformance Exhaust???
  178. Engine year compatibility
  179. Sucessful Northstar head gasket repair in a bottle
  180. PCM 09354896 code DCHJ
  181. 1997 4.6 eldorado up hill over heats
  182. fuel injector ohms
  183. 93 sts fuel rail removal tools
  184. Air ride compressor
  185. Overheating??
  186. Codes P0122 and P1122...
  187. Motor mount replaced!! WTF!!!!!
  188. 1996 Seville STS O2 Sensor REMOVAL. CAN"T GET TO IT
  189. 96 Seville where's the 02 Oxygen Sensor Location?? PLEASE HELP WONT PASS EMISSIONS!!!
  190. Long road trips good for the Northstar?
  191. headgaskets a 2nd time?
  192. 97 eldorado w/180,000 miles, should i upgrade to a preformance coil?
  193. 94 eldorado 4.6 - no codes - stumbling/chugging - about to give up
  194. Car not turning over
  195. Codes 340 and 1016 + Fixed A.I.R. with new coil cartridge?
  196. Transmission issue
  197. spark plugs
  198. Yearly engine oil changes really necessary?
  199. Overheating problem
  200. maybe you all know more
  201. What Oil For Northstar Cams and Flat Tappets?
  202. 93 seville sts fuel rail
  203. rear main seal
  204. 93-99 Camshaft picture needed
  205. Seville 03 shaking problems after tune-up.
  206. is it the head gasket again?
  207. Problems with starting the engine
  208. Adding an Electric water Pump 95 Northstar
  209. 1995 northstar for sale *LOCKED*
  210. After WOT Car smells strong of sulfur , rotten eggs
  211. Dexool Questions
  212. 2002 caddy deville
  213. Limp. Mode help
  214. Lifter starting to tap and needs replacing,
  215. Reg oil or Synthetic oil
  216. Coolant Shooting Out
  217. Random light miss during constant hwy cruising
  218. Which PCM??
  219. Fuel Injector O-Rings- Where go?
  220. air in cooling system
  221. Best oil and spark plugs for the northstar 4.6L
  222. Enginge doesn't crank
  223. Help!! Engine idling with hiccups
  224. Tach
  225. the day has come: headgasket
  226. '99 Seville STS
  227. What are the differences between 99> and 00< motors?
  228. Why do these motors break rods?
  229. pretty betty deville
  230. how reliable is northstars limp mode
  231. 1999 deville almost overheating
  232. 3.71 ever better with smaller wheels?
  233. Refrigerant pressure
  234. Minor Coolant Leak
  235. 93 sts misfires, stalls, very rough idle, looking for cause
  236. Any thoughts? Code P1350 p1375
  237. Injector spec for a Y2000 N*
  238. oil cooler
  239. TPS issue: Codes P0122, P1122. Help!
  240. Need Help Installing Air Filter ?
  241. 2002 Deville coolant leak
  242. Blew the head gaskets replacing the motor
  243. 1997 deville stalling at idle
  244. bad headgasket
  245. N* running Hot, Real Hot
  246. 99 deville oil pump
  247. 2001 Northstar AIR Valve
  248. Hydraulic valve-lash adjustor evaluation?
  249. 99 deville - RFA U1000 Help
  250. 91 GMC Sierra, with a Northstar?